 LITOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD FOR THE PRODUCTION OF LITOGRAPHIC PRINTING PLATE
专利摘要:
a precursor of lithographic printing plate that includes an image recording layer on a hydrophilic support, wherein the image recording layer includes a polymerization initiator, an infrared absorber, a polymerizable compound and an acid staining former and the Infrared absorber includes a compound represented by formula 1, as well as a method of preparing a lithographic printing plate using the lithographic printing plate precursor. in formula 1, at least one of ar1 or ar2 has a group represented by formula 2 below. -x formula 2 x represents a halogen atom, -c (= o) -x2-r11, -c (= o) -nr12r13, -oc (= o) -r14, -cn, -so2nr15r16 or a perfluoroalkyl group, x2 represents a single bond or an oxygen atom, r11 and r14 each independently represents an alkyl group or an aryl group and r12, r13, r15 and r16 each independently represents a hydrogen atom, an alkyl group or an aryl group. formula 1 公开号:BR112019022492A2 申请号:R112019022492-0 申请日:2018-07-11 公开日:2020-05-12 发明作者:Ishiji Yohei；Nogoshi Keisuke；Inasaki Takeshi 申请人:Fujifilm Corporation； IPC主号:
专利说明:
“LITOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD FOR THE PRODUCTION OF LITOGRAPHIC PRINTING PLATE” BACKGROUND OF THE INVENTION Technical Field [001] The present disclosure relates to a precursor to a lithographic printing plate and a method of preparing a lithographic printing plate. Background of the Technique [002] In general, lithographic printing plates include areas of lipophilic images for receiving ink and hydrophilic areas without image for receiving wetting water during printing. Lithographic printing means methods that include allowing lithographic printing plates to have areas of lipophilic images that serve as ink receiving areas and hydrophilic areas with no image that serve as areas that receive wetting water (areas that do not receive ink) by through the repulsion property of each one between water and oil-based ink, to result in the difference in ink adhesion on the surface of the lithographic printing plates, applying ink only on the image areas and after that transferring the ink to printing sheets, such as paper, for printing. [003] Precursor lithographic printing plate (PS plates) obtained by providing layers of lipophilic photosensitive resin (image recording layers) on hydrophilic supports have been conventionally widely used to prepare these lithographic printing plates. Such lithographic printing plates are generally obtained by exposing the lithographic printing plate precursors to original drawings such as lithographic films, allowing thereafter that portions that serve as image areas of the image recording layers to remain and the removal of other layers no image recording required with dissolving in alkaline developers Petition 870190108854, of 10/25/2019, p. 11/118 2/101 or organic solvents, thus exposing the surface of hydrophilic supports to form non-image areas. [004] Environmental challenges in relation to waste liquids associated with wet treatments such as developing treatments have been shown with an increased interest in the global environment. [005] In response to environmental challenges, it has been demanded to simplify or eliminate the development and / or production of plaques. A simple preparation method that is carried out is a so-called "press development" method. That is, this method corresponds to a method in which the precursor of the lithographic printing plate is exposed and then mounted on a printer without any conventional development, thus allowing an unnecessary portion of an image recording layer to be removed in the initial state of a usual printing step. [006] Examples of a conventional lithographic printing plate precursor include a lithographic printing plate precursor described in U.S. Patent No. 2009/0047599 or in U.S. Patent No. 2013/0052582. SUMMARY OF THE INVENTION Technical problem [007] A lithographic printing plate that is demanded is an excellent lithographic printing plate in terms of the number of sheets on which printing can be done by the plate (later here, also referred to here as "printing durability".). [008] The present inventors carried out intensive studies and as a result, found that the precursor of lithographic printing plate described in US Patent No. 2009/0047599 or in US Patent No. 2013/0052582 has the problems of being insufficient in relation to printing durability of a lithographic printing plate that will be obtained and also be insufficient in relation to the Petition 870190108854, of 10/25/2019, p. 11/12 3/101 color development on an exposed portion. [009] An objective that should be accomplished by a modality of the present invention is to provide a precursor of lithographic printing plate that allows an excellent lithographic printing plate in relation to printing durability to be obtained and that is excellent in the ability to form. color. [010] An objective that should be accomplished by another embodiment of the invention is to provide a method of preparing a lithographic printing plate using the lithographic printing plate precursor. Solution to the Problem [011] The solutions to solve the problems mentioned above cover the following aspects. <1> A lithographic printing plate precursor that includes an image recording layer on a hydrophilic support, where the image recording layer includes a polymerization initiator, an infrared absorber, a polymerizable compound and a coloring former acid and the infrared absorber include a compound represented by Formula 1 below. Formula 1 Formula 1 Ri and R2 each independently represent a hydrogen atom or an alkyl group, Ri and R2 are optionally linked mutually to form a ring, R3 to Re each independently represents a hydrogen atom or an alkyl group, R7 and Rs each independently represents an alkyl group or an aryl group, Y1 and Y2 each independently represents an oxygen atom, a sulfur atom, -NRo- or a dialkylmethylene group, An and Ar2 each Petition 870190108854, of 10/25/2019, p. 11/13 4/101 one independently represents a group that forms a benzene ring or a naphthalene ring optionally having -X described below, Ai represents -NR9R10, -X1-L1 or -X described below, R9 and R10 each independently represents a alkyl group, an aryl group, an alkoxycarbonyl group or an arylsulfonyl group, X1 represents an oxygen atom or a sulfur atom, L1 represents a hydrocarbon group, a heteroaryl group or a group in which an X1 bond should be cleaved by exposure in heat or infrared, Za represents an indicator ion that neutralizes the charge and at least one of An or Ar2 has a group represented by Formula 2 below. -XFormula 2 X represents a halogen atom, -C (= O) -X2-Rn, -C (= O) -NRi2Ri3, -OC (= O) -Ru, -CN, -SO2NR15R16 or a perfluoroalkyl group, X2 represents a bond single or an oxygen atom, Rn and Ru each independently represents an alkyl group or an aryl group and R12, R13, R15 and R16 each independently represents a hydrogen atom, an alkyl group or an aryl group. <2> The lithographic printing plate precursor according to <1>, where only one of An or Ar2 in Formula 1 has the group represented by Formula 2. <3> The lithographic printing plate precursor according to <1> or <2>, where X in Formula 2 represents a fluorine atom, a chlorine atom or -C (= O) ORi7, provided that R17 represents an alkyl group or an aryl group. <4> The lithographic printing plate precursor according to <2> or <3>, where A1 in Formula 1 represents -NR18R19 or -S-R20, provided that Ris and R19 each independently represent an aryl group and R20 represents a hydrocarbon group or a heteroaryl group. <5> The precursor of lithographic printing plate according to any Petition 870190108854, of 10/25/2019, p. 11/148 5/101 one from <1> to <4>, wherein the difference between the HOMO of the compound represented by Formula 1 and the HOMO of at least one polymerization initiator compound is 0.60 eV or less. <6> The lithographic printing plate precursor according to any of <1> to <5>, wherein the polymerization initiator is a borate compound. <7> The lithographic printing plate precursor according to <6>, wherein the borate compound is a tetraarylborate compound or a monoalkyltriarylborate compound. <8> The lithographic printing plate precursor according to any one of <1> to <7>, wherein the polymerization initiator includes an electron donating polymerization initiator and an electron receiving polymerization initiator. <9> The lithographic printing plate precursor according to any one of <1> to <8>, wherein the acid stain former is at least one compound selected from the group consisting of a spiropyran compound, a compound of spirooxazine, a spirolactum compound and a spirolactam compound. <10> The lithographic printing plate precursor according to any of <1> to <9>, where Za represents an organic anion that contains a carbon atom. <11> The lithographic printing plate precursor according to any of <1> to <10>, where Za represents a sulfonimide anion. <12> A method of preparing a lithographic printing plate, which comprises a step of exposing the lithographic printing plate precursor to the image according to any one of <1> to <11>, thus forming an exposed portion and an unexposed portion and a step of feeding at least one of printing ink or moistening water, thereby removing the unexposed portion. Petition 870190108854, of 10/25/2019, p. 11/15 6/101 Advantageous Effects of the Invention [012] One embodiment of the invention can provide a lithographic printing plate precursor that allows a lithographic printing plate to be obtained which is excellent in terms of printing durability and which is excellent in color forming capacity. [013] Another embodiment of the invention can provide a method of preparing a lithographic printing plate by using the lithographic printing plate precursor. DESCRIPTION OF MODALITIES [014] Subsequently here, the content of the disclosure will be described in detail. The description of the constituent elements presented below can be made based on the representative modalities of the disclosure, but the disclosure is not limited to those modalities. [015] Here, "(from) ... a ..." representing any numerical range is used to mean that the numerical range includes the numeric values described before and after "a" as the lower limit and the upper limit , respectively. [016] In a case where a group (atomic group) is mentioned here without any substitution or non-substitution being mentioned, its concept covers a group that has no substituent and a group that has a substituent. For example, the term "alkyl group" includes not only an alkyl group (unsubstituted alkyl group) that has no substituent, but also an alkyl group (substituted alkyl group) that has a substituent. [017] Here, the concept of "(meth) acryl" encompasses both acryl and methacryl and the concept of "(meth) acrylyl" encompasses both acryl and methacryl. [018] Here, the term “stage” includes not only an independent stage, but also a stage that can achieve a predetermined goal even if it is not clearly distinguished from other stages. Petition 870190108854, of 10/25/2019, p. 11/168 7/101 [019] In disclosure, "mass%" has the same definition as "% by weight" and "mass part (s)" has the same definition as "part (s) by weight". [020] In disclosure, a combination of two or more preferred aspects is a more preferred aspect. [021] Each of the average weight molecular weight (Mw) and the number average molecular weight (Mn) in the disclosure means a molecular weight in the conversion of polystyrene used as a standard substance, which is determined with detection through a differential refractometer in a solvent THF (tetrahydrofuran) using a gel permeation chromatography analyzer (GPC) in which the TSKgel GMHxL, TSKgel G4000HxL and TSKgel G2000HxL columns are used (all are trade names, produced by Tosoh Corporation), unless that is particularly quoted. [022] The term “lithographic printing plate precursor” here encompasses not only a lithographic printing plate precursor, but also an original plate that serves as a main plate. The term "lithographic printing plate" encompasses not only a lithographic printing plate produced, if necessary, subjecting a precursor to a lithographic printing plate to operations such as exposure and development, but also a main plate. Such operations as exposure and development are not necessarily necessary in the case of an original board that serves as a main board. The main plate here means, for example, a precursor to a lithographic printing plate that will be mounted on a plate cylinder that is not used in the color printing of the newspaper which should be partially printed in a single color or two colors. Later here, the disclosure will be described in detail. (Precursor to Lithographic Printing Plate) [023] The lithographic printing plate precursor according to the disclosure includes an image recording layer on a hydrophilic support, Petition 870190108854, of 10/25/2019, p. 11/178 8/101 in which the image recording layer includes a polymerization initiator, an infrared absorber, a polymerizable compound and an acid-staining former and the infrared absorber includes a compound represented by Formula 1 below. [024] The lithographic printing plate precursor according to the disclosure can be properly used as a lithographic printing plate precursor for development in the press. Formula 1 Formula 1 Ri and R2 each independently represent a hydrogen atom or an alkyl group, Ri and R2 are optionally linked mutually to form a ring, R3 to Re each independently represents a hydrogen atom or an alkyl group, R7 and Rs each independently represents an alkyl group or an aryl group, Y1 and Y2 each independently represents an oxygen atom, a sulfur atom, -NRo- or a dialkylmethylene group, An and Ar2 each independently represents a group that forms a benzene ring or a naphthalene ring optionally having -X described below, A1 represents -NR9R10, -X1-L1 or -X described below, R9 and R10 each independently represents an alkyl group, an aryl group, an alkoxycarbonyl group or an arylsulfonyl group, X1 represents an oxygen atom or a sulfur atom, L1 represents a hydrocarbon group, a heteroaryl group or a group in which a bond with X1 must be cleaved by exposure to heat or infrared Za represents an indicator ion that neutralizes charge and at least one of An or Ar2 has a group Petition 870190108854, of 10/25/2019, p. 11/188 9/101 represented by Formula 2 below. -XFormula 2 X represents a halogen atom, -C (= O) -X2-Rn, -C (= O) -NRi2Ri3, -OC (= O) -Ru, -CN, -SO2NR15R16 or a perfluoroalkyl group, X2 represents a bond single or an oxygen atom, Rn and Ru each independently represents an alkyl group or an aryl group, R12, R13, R15 and R16 each independently represents a hydrogen atom, an alkyl group or an aryl group. [025] As described above, the inventors have found that a conventional lithographic printing plate precursor has the problems of being insufficient in terms of the printing durability of a lithographic printing plate to be obtained and also of being insufficient in relation to the development of color over an exposed portion. [026] The inventors also found that the use of an infrared absorber that has an acidic group, to promote the decomposition of an acid-colored former, results not only in the inferior printing durability, but also in the decomposition of a portion of the former acidic coloring even over an unexposed portion, thus causing color development to occur partially before exposure, resulting in a small difference in color after exposure and a lower color-forming ability. [027] The inventors have carried out intensive studies and as a result, the above configuration can be adopted to thus provide a precursor of lithographic printing plate that allows to obtain a lithographic printing plate that is excellent in relation to printing durability and that it excels in color-forming ability. [028] The details of the mechanism through which the effect is obtained are not clear, but are estimated as follows. Petition 870190108854, of 10/25/2019, p. 11/198 10/101 [029] It is estimated that since the compound represented by Formula 1 has a -X group that removes specific electrons that is not an acidic group, in a specified position, the HOMO (highest molecular orbital occupied) of the compound represented by Formula 1 is reduced when compared to a compound that does not have -X at a specified position, resulting in a reduced difference between the HOMO of the compound represented by Formula 1 and the HOMO of at least one polymerization initiator compound. [030] It is estimated that the use of the compound represented by Formula 1 that has a -X group that removes specific electrons at a specified position in combination with the polymerization initiator allows the transfer of electrons from the polymerization initiator to the compound represented by Formula 1 occurs on exposure and the decomposition of the polymerization initiator allows an acid or the like to be generated, thus resulting in an increased rate of decomposition in the exposure of the acid stain former and excellent color forming ability. It is also estimated that the polymerization initiator includes an electron donating polymerization initiator and an electron receiving polymerization initiator and the compound represented by Formula 1, a polymerizable compound and an acid staining former are contained, thus resulting in a greater increase in print durability. cImage Recording Layer » [031] The lithographic printing plate precursor according to the disclosure includes an image recording layer that contains a polymerization initiator, an infrared absorber, a polymerizable compound and an acid staining former, in which the infrared absorber includes a compound represented by Formula 1 below. [032] The image recording layer for use in disclosure is preferably a negative image recording layer, more Petition 870190108854, of 10/25/2019, p. 11/20 11/101 preferably an image recording layer of the water-soluble or water-dispersible negative type. [033] It is preferable from the point of view of the developing capacity in the press that the unexposed portion of the image recording layer is removed by at least any of the wetting water or printing ink in the precursor of a lithographic printing plate. according to the disclosure. [034] Later on, the details of each component included in the image recording layer will be described. -Composition Represented by Formula 1 [035] The image recording layer on the precursor of the lithographic printing plate according to the disclosure includes an infrared absorber and the infrared absorber includes the compound represented by Formula 1. [036] The infrared absorber has a function of converting absorbed infrared rays to heat and a function of being excited by infrared rays to thereby perform at least any electron transfer or energy transfer to a polymerization initiator described below . The infrared absorber for use in the disclosure is preferably a dye that has a maximum absorption wavelength of 750 nm to 1,400 nm. [037] An and Ar 2 each independently represent a group that forms a benzene ring or a naphthalene ring. The benzene ring and the naphthalene ring can have any substituent other than -X. Examples of the substituent include an alkyl group, an alkoxy group, an aryloxy group, an amino group, an alkylthio group, an arylthio group, a carboxy group, a carboxylate group, a sulfo group, a sulfonate group and a group as a combination and an alkyl group is preferable. [038] In Formula 1, at least one of An or Ar 2 has the group represented Petition 870190108854, of 10/25/2019, p. 11/21 12/101 by Formula 2 and only one of An or Ar2 preferably has the group represented by Formula 2 starting from the point of view of printing durability, color formation capacity and stability during storage (aging stability) in the aging of a solution coating for use in forming the image recording layer. [039] In Formula 2, X represents a halogen atom, -C (= O) -X2-Rn, -C (= O) -NRi 2 Ri3, -OC (= O) -Ru, -CN, -SO2NR15R16 or a perfluoroalkyl group and preferably represents a halogen atom, -C (= O) -X2-Rn, -C (= O) -NRi 2 Ri3, -OC (= O) -Ru, CN or -SO2NR15R16, preferably represents a halogen atom, -C (= O) -O-Rn, -C (= O) -NRi2Ri3 or -OC (= O) -Ru, still more preferably represents a halogen atom, -C (= O) - O-Rn or -OC (= O) -Ri4, particularly preferably represents a fluorine atom, a chlorine atom or -C (= O) ORi7 starting from the point of view of printing durability, color forming capacity and stability in aging. X2 represents a single bond or an oxygen atom, preferably represents an oxygen atom. R11 and R14 preferably each independently represent an alkyl group or an aryl group, preferably represent an alkyl group that has 1 to 12 carbon atoms or an aryl group that has 6 to 12 carbon atoms, more preferably an alkyl group that has 1 to 12 carbon atoms. R12, R13, R15 and R16 each independently represents a hydrogen atom, an alkyl group or an aryl group, preferably a hydrogen atom, an alkyl group that has 1 to 12 carbon atoms or an aryl group that has 6 to 12 carbon atoms, more preferably a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, even more preferably an alkyl group having 1 to 12 carbon atoms. R17 represents an alkyl group or an aryl group, preferably an Petition 870190108854, of 10/25/2019, p. 11/22 13/101 alkyl group having 1 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, more preferably an alkyl group having 1 to 12 carbon atoms. Ai represents -NR9R10, -X1-L1 or -X, preferably represents -NR9R10 or -X1-L1, more preferably -NR18R19, -S-R20 from the point of view of print durability, color forming ability and stability in the aging. R9 and R10 each independently represent an alkyl group, an aryl group, an alkoxycarbonyl group or an arylsulfonyl group, preferably an alkyl group that has 1 to 12 carbon atoms or an aryl group that has 6 to 12 carbon atoms, more preferably an alkyl group that has 1 to 12 carbon atoms. Xi represents an oxygen atom or a sulfur atom and X1 preferably represents a sulfur atom in a case where L1 represents a hydrocarbon group or a heteroaryl group. L1 preferably represents a group in which a bond with X1 should be cleaved by exposure to heat or infrared. L1 represents a hydrocarbon group, a heteroaryl group or a group in which a bond with X1 should be cleaved by exposure to heat or infrared and preferably represents a hydrocarbon group or a heteroaryl group, more preferably an aryl group or a heteroaryl group, even more more preferably a heteroaryl group starting from the point of view of printing durability. L1 preferably represents a group in which a bond with X1 should be cleaved by exposure to heat or infrared starting from the point of view of the capacity of color formation and capacity of suppression in aging. Petition 870190108854, of 10/25/2019, p. 11/23 10/141 [040] The group in which a bond with Xi is to be cleaved by exposure to heat or infrared is described below. Ris and R19 each independently preferably represents an aryl group, an aryl group that has 6 to 20 carbon atoms, more preferably a phenyl group. R20 represents a hydrocarbon group or a heteroaryl group, preferably an aryl group or a heteroaryl group, more preferably a heteroaryl group. [041] Examples of each heteroaryl group in Li and R20 preferably include the following. [042] Each alkyl group in R1 to R10 and Ro is preferably an alkyl group that has 1 to 30 carbon atoms, more preferably an alkyl group that has 1 to 15 carbon atoms, even more preferably an alkyl group that has 1 to 10 carbon atoms. The alkyl group can be linear or branched or it can have a ring structure. [043] Specific examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group , a dodecyl group, a tridecyl group, a hexadecyl group, an octadecyl group, an eicosyl group, an isopropyl group, an isobutyl group, an s-butyl group, a t-butyl group, an isopentyl group, a neopentyl group, a neopentyl group group 1-methylbutyl, an isohexyl group, a 2-ethylhexyl group, a 2-methylhexyl group, a cyclohexyl group, a group Petition 870190108854, of 10/25/2019, p. 11/24 15/101 cyclopentyl and a 2-norbornyl group. [044] Among such alkyl groups, a methyl group, an ethyl group, a propyl group or a butyl group is particularly preferable. [045] The alkyl group may have a substituent. Examples of the substituent include an alkoxy group, an aryloxy group, an amino group, an alkylthio group, an arylthio group, a halogen atom, a carboxy group, a carboxylate group, a sulfo group, a sulfonate group, an alkyloxycarbonyl group, an aryloxycarbonyl group and a group as a combination thereof. [046] Each aryl group in R9, R10, Ris, R19 and Ro is preferably an aryl group that has 6 to 30 carbon atoms, more preferably an aryl group that has 6 to 20 carbon atoms, even more preferably an aryl group which has 6 to 12 carbon atoms. [047] The aryl group may have a substituent. Examples of the substituent include an alkyl group, an alkoxy group, an aryloxy group, an amino group, an alkylthio group, an arylthio group, a halogen atom, a carboxy group, a carboxylate group, a sulfo group, a sulfonate group, an alkyloxycarbonyl group, an aryloxycarbonyl group and a group as a combination thereof. [048] Specific examples of the aryl group include a phenyl group, a naphthyl group, a p-tolyl group, a p-chlorophenyl group, a p-fluorophenyl group, a p-methoxyphenyl group, a p-dimethylaminophenyl group, a group p-methylthiophenyl and a p-phenylthiophenyl group. [049] Among such aryl groups, a phenyl group, a p-methoxyphenyl group, a p-dimethylaminophenyl group or a naphthyl group is preferable. R1 and R2 are preferably linked to form a ring. [050] In a case where R1 and R2 are linked to form a ring, the number of ring members is preferably 5 or 6, more preferably 6. The ring obtained by linking R1 and R2 is preferably a hydrocarbon ring Petition 870190108854, of 10/25/2019, p. 11/25 16/101 that optionally has an ethylenically unsaturated bond. Yi and Y2 each independently represent an oxygen atom, a sulfur atom, -NRo- or a dialkylmethylene group, preferably -NRo- or a dialkylmethylene group, more preferably a dialkylmethylene group. Ro represents a hydrogen atom, an alkyl group or an aryl group, preferably an alkyl group. R7 and Rs preferably represent the same group. R7 and Rs each independently preferably represents a linear alkyl group or an alkyl group that has a sulfonate group at a terminal, more preferably a methyl group, an ethyl group or a butyl group that has a sulfonate group at a terminal. [051] The indicator cation of the sulfonate group can be a cation on a nitrogen atom in Formula 1 or it can be an alkali metal cation or an alkaline earth metal cation. R7 and Rs each independently preferably represents an alkyl group that has an anion structure, more preferably an alkyl group that has a carboxylate group or a sulfonate group, even more preferably an alkyl group that has a sulfonate group at a terminal starting from the point of view of water solubility of the compound represented by Formula 1. R7 and Rs each independently preferably represents an alkyl group having an aromatic ring, more preferably an alkyl group having an aromatic ring at one end, particularly preferably a 2-phenylethyl group, a 2-naphthalenylethyl group or a group 2- (9 -anthracenyl) ethyl starting from the point of view of an increase in the maximum absorption wavelength of the compound represented by Formula 1 and also color-forming capacity and printing durability of the lithographic printing plate. R3 to Re each independently represents a hydrogen atom or Petition 870190108854, of 10/25/2019, p. 11/26 17/101 an alkyl group, preferably a hydrogen atom. [052] Za represents a charge-neutralizing indicator ion and in a case where Za represents anionic species, examples include a sulfonate ion, a carboxylate ion, a tetrafluoroborate ion, a hexafluorophosphate ion, a perchlorate ion, a sulfonamide anion and a sulfonimide anion. In a case where Za represents cationic species, Za preferably represents an alkali metal ion, an alkaline earth metal ion, an ammonium ion, a pyridinium ion or a sulfonium ion, more preferably a sodium ion, an ion potassium ion, an ammonium ion, a pyridinium ion or a sulfonium ion, even more preferably a sodium ion, a potassium ion or an ammonium ion, particularly preferably a sodium ion, a potassium ion or an ion trialkylammonium. [053] In particular, Za preferably represents an organic anion containing carbon atom, more preferably a sulfonate ion, a carboxylate ion, a sulfonamide anion or a sulfonimide anion, even more preferably a sulfonamide anion or a sulfonimide anion, particularly preferably an sulfonimide anion from the point of view of printing durability and color formation capacity. Ri at Rs, Ro, Ai, An, Ar2, Yi and Y2 can have an anion structure or a cation structure. In a case where all of R1 to Rs, Ro, A1, An, Ar2, Y1 and Y2 represent an electrically neutral group, Za represents a monovalent indicator anion and, for example, in a case where two or more of R1 to Rs, Ro, A1, An, Ar2, Yi and Y2 have an anion structure, Za can also represent an indicator cation. [054] In a case where any group other than Za in Formula 1 is electrically neutral, Za need not be present. [055] The sulfonamide anion is preferably an arylsulfonamide anion. [056] The sulfonimide anion is preferably a bisaryl sulfonimide anion. Petition 870190108854, of 10/25/2019, p. 11/278 10/181 [057] Specific examples of the sulfonamide anion or the sulfonimide anion are shown below, but are not limited to them in disclosure. In the specific examples below, Ph represents a phenyl group, Me represents a methyl group and Et represents an ethyl group, respectively. [058] The group into which a link with Xi is to be cleaved by exposure Petition 870190108854, of 10/25/2019, p. 11/28 19/101 to heat or infrared is preferably a group represented by any of Formula 1-1 to Formula 1-7 below, more preferably a group represented by any of Formula 1 -1 to Formula 1 -3 below departing from the point of view of color forming ability. [059] In Formula 1-1 Formula 1-7, · represents an Xi-binding site in Formula 1, each R 10 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, -OR 14 , -NR 15 R 16 or -SR 17 , each R 11 independently represents a hydrogen atom, an alkyl group or an aryl group, R 12 represents an aryl group, -OR 14 , -NR 15 R 16 , -SR 17 , -C (= O) R 18 , -OC (= O) R 18 or a halogen atom, R 13 represents an aryl group, an alkenyl group, an alkoxy group or an onium group, R 14 to R 17 each independently represents a hydrogen atom, an alkyl group or an aryl group, each R 18 independently represents an alkyl group, an aryl group, -OR 14 , -NR 15 R 16 or -SR 17 and Z 1 represents an indicator ion that neutralizes charge. [060] A preferable aspect in which R 10 , R 11 and R 14 to R 18 represent an alkyl group is the same as a preferable aspect of each alkyl group in R 2 to R 9 and R °. [061] Each alkenyl group in R 10 and R 13 preferably has 1 to 30 carbon atoms, more preferably 1 to 15 carbon atoms, still Petition 870190108854, of 10/25/2019, p. 11/29 20/101 more preferably from 1 to 10 carbon atoms. [062] A preferable aspect in which R 10 to R 18 represent an aryl group is the same as a preferable aspect of an aryl group in R °. [063] R 1 ° in Formula 1-1 preferably represents an alkyl group, an alkenyl group, an aryl group, -OR 14 , -NR 15 R 16 or -SR 17 , more preferably an alkyl group, -OR 14 , - NR 15 R 16 or -SR 17 , even more preferably an alkyl group or -OR 14 , particularly preferably -OR 14 from the point of view of color-forming ability. [064] In a case where R 10 in Formula 1-1 represents an alkyl group, the alkyl group is preferably an alkyl group that has an arylthio group or an alkyloxycarbonyl group in an a position. [065] In a case where R 10 in Formula 1-1 represents -OR 14 , R 14 preferably represents an alkyl group, more preferably an alkyl group having 1 to 8 carbon atoms, even more preferably an isopropyl group or an t-butyl group, particularly preferably a t-butyl group. [066] R 11 in Formula 1-2 preferably represents a hydrogen atom starting from the point of view of color formation capacity. [067] R 12 in Formula 1-2 represents preferably -C (= O) OR 14 , -OC (= O) OR 14 or a halogen atom, more preferably -C (= O) OR 14 or -OC (= O) OR 14 from the point of view of color formation capacity. In a case where R 12 in Formula 1-2 represents -C (= O) OR 14 or -OC (= O) OR 14 , R 14 preferably represents an alkyl group. [068] Each R 11 in Formula 1-3 independently preferably represents a hydrogen atom or an alkyl group and at least one R 11 in Formula 1-3 more preferably represents an alkyl group from the point of view of color-forming ability . [069] The alkyl group in R 11 preferably represents an alkyl group Petition 870190108854, of 10/25/2019, p. 11/30 21/101 having 1 to 10 carbon atoms, more preferably an alkyl group having 3 to 10 carbon atoms. [070] The alkyl group in R 11 preferably represents a branched alkyl group or a cycloalkyl group, more preferably a secondary or tertiary alkyl group or a cycloalkyl group, even more preferably an isopropyl group, a cyclopentyl group, a cyclohexyl group or a group t-butyl. [071] R 13 in Formula 1-3 preferably represents an aryl group, an alkoxy group or an onium group, more preferably a p-dimethylaminophenyl group or a pyridinium group, even more preferably a pyridinium group from the point of view of the ability to color formation. [072] Examples of an onium group in R 13 include a pyridinium group, an ammonium group and a sulfonium group. The onio group may have a substituent. Examples of the substituent include an alkyl group, an alkoxy group, an aryloxy group, an amino group, an alkylthio group, an arylthio group, a halogen atom, a carboxy group, a sulfo group, an alkyloxycarbonyl group, an aryloxycarbonyl group and a group as a combination thereof and an alkyl group, an aryl group and a group as a combination thereof are preferable. [073] In particular, a pyridinium group is preferable, an N-alkyl-3-pyridinium group, an N-benzyl-3-pyridinium group, an N- (alkoxypolyalkyleneoxyalkyl) -3-pyridinium group, an N-alkoxycarbonylmethyl- 3-pyridinium, an N-alkyl-4-pyridinium group, an N-benzyl-4-pyridinium group, an N- (alkoxypolyalkyloxyalkyl) -4-pyridinium group, an N-alkoxycarbonylmethyl-4-pyridinium group or an N- alkyl-3,5-dimethyl-4-pyridinium is more preferable, an N-alkyl-3-pyridinium group or an N-alkyl-4-pyridinium group is even more preferable, an N-methyl-3-pyridinium group, a an N-octyl-3-pyridinium group, an N-methyl-4-pyridinium group or an N-octyl-4-pyridinium group is particularly preferable, an N-octyl-3-pyridinium group or an N-octyl-4- group pyridinium is more preferable. Petition 870190108854, of 10/25/2019, p. 11/318 10/22 [074] In a case where R 13 represents a pyridinium group, examples of the indicator anion include a sulfonate ion, a carboxylate ion, a tetrafluoroborate ion, a hexafluorophosphate ion, a p-toluenesulfonate ion and a perchlorate ion and a p ion -toluenesulfonate or a hexafluorophosphate ion is preferable. [075] Each R 10 in Formula 1-4 preferably represents an alkyl group or an aryl group and more preferably, one of two R 10 's represents an alkyl group and the other represents an aryl group from the point of view of the ability to color formation. [076] R 1 ° in Formula 1-5 preferably represents an alkyl group or an aryl group, more preferably an aryl group, even more preferably a p-methylphenyl group from the point of view of color-forming ability. [077] Each R 10 in Formula 1-6 independently preferably represents an alkyl group or an aryl group, more preferably a methyl group or a phenyl group starting from the point of view of color-forming ability. [078] Z 1 in Formula 1-7 may represent a charge-neutralizing ion ion or may be contained in Za in terms of the entire compound from the point of view of color-forming ability. [079] Z 1 preferably represents a sulfonate ion, a carboxylate ion, a tetrafluoroborate ion, a hexafluorophosphate ion, a p-toluenesulfonate ion or a perchlorate ion, more preferably a p-toluenesulfonate ion or a hexafluorophosphate ion. [080] The group in which a bond with Xi is to be cleaved by exposure to heat or infrared is particularly preferably a group represented by Formula 1-8. Petition 870190108854, of 10/25/2019, p. 11/28 10/23 [081] In Formula 1-8, · represents an Xi-binding site in Formula 1, R 19 and R 20 each independently represents an alkyl group and Za 'represents a charge-neutralizing ion ion. [082] The bonding position between a pyridinium ring in Formula 1-8 and a hydrocarbon group containing R 20 is preferably a 3 or 4 position on the pyridinium ring, more preferably a 4 position on the pyridinium ring. [083] Each alkyl group at R 19 and R 20 can be linear or branched or can have a ring structure. [084] The alkyl group may have a substituent and examples of the substituent preferably include an alkoxy group and an alkoxy terminated polyalkyleneoxy group. [085] R 19 preferably represents an alkyl group having 1 to 12 carbon atoms, more preferably a linear alkyl group having 1 to 12 carbon atoms, even more preferably a linear alkyl group having 1 to 8 carbon atoms, particularly preferably a methyl group or a non-octyl group. [086] R 2 ° preferably represents an alkyl group having 1 to 8 carbon atoms, more preferably a branched alkyl group having 3 to 8 carbon atoms, even more preferably an isopropyl group or a t-butyl group, particularly preferably an isopropyl group. [087] Za 'may represent an indicator ion that neutralizes charge or it may be contained in Za in terms of the entire compound. Petition 870190108854, of 10/25/2019, p. 11/338 10/24 [088] Za 'preferably represents a sulfonate ion, a carboxylate ion, a tetrafluoroborate ion, a hexafluorophosphate ion, a p-toluenesulfonate ion or a perchlorate ion, more preferably a p-toluenesulfonate ion or a hexafluorophosphate ion. [089] Specific examples of the compound represented by Formula 1 preferably include parent nuclear structures A-1 to A-54, indicator anions B-1 to B-10 and indicator cations C-1 to C-3 below, but are not limited to them in the invention. Specific examples of the compound represented by Formula 1 include a compound obtained by combining one of the parent nuclear structures A-1 to A-9, A-11 to A-20 and A-22 to A-54 with one of the indicator anions B-1 to B-10 and a compound obtained by combining one of the parent nuclear structures A-10 and A-21 with one of the indicator cations C-1 to C-3. Petition 870190108854, of 10/25/2019, p. 11/34 10/25 HOMO = -5.45 eV Petition 870190108854, of 10/25/2019, p. 11/35 10/26 Petition 870190108854, of 10/25/2019, p. 36/118 10/271 Petition 870190108854, of 10/25/2019, p. 37/118 10/28 Petition 870190108854, of 10/25/2019, p. 11/38 10/29 B-6 Petition 870190108854, of 10/25/2019, p. 39/118 10/30 Cl B-9 O O F3C-S-N - S-CF3 0 B- 10 Na + K + (CH 3 CH 2 ) 3 NH + C - 1 C - 2 C - 3 [090] The method of preparing the compound represented by Formula 1 is not particularly limited and the compound can be prepared with reference to a known method of preparing a cyanine coloring agent. A method described in International Publication WO 2016/027886 can also be used appropriately. [091] The difference (ΔΕ) between the HOMO of the compound represented by Formula 1, as an infrared absorber and the HOMO of at least one polymerization initiator compound described below is preferably 0.60 eV or less, more preferably than 0.30 eV to 0.60 eV, even more preferably from 0.40 eV to 0.58 eV, particularly preferably from 0.45 eV to 0.57 eV starting from the point of view of printing durability and ability to form color. [092] The difference (ΔΕ) between the HOMO of the compound represented by Formula 1, infrared absorber and the HOMO of the electron donating polymerization initiator is preferably 0.60 eV or less, more preferably from 0.30 eV to 0, 60 eV, even more preferably from 0.40 eV to 0.58 eV, particularly preferably from 0.45 eV to 0.57 eV starting from the point of view of printing durability and color formation capacity. Petition 870190108854, of 10/25/2019, p. 11/40 10/31 [093] The HOMO calculation method for any compound in the disclosure is carried out according to the following method. [094] First, the indicator anion in an objective compound for calculation is ignored. [095] The Gaussian 09 quantum chemistry calculation software is used and the optimization of the structure is performed by DFT (B3 LYP / 6-31G (d)). [096] The MO (orbital molecular) energy is calculated with the structure obtained through the optimization of the structure, according to DFT (B3LYP / 6-31 + G (d, p) / CPCM (solvent = methanol)). [097] The MO Epre energy (unit: hartree) obtained according to the calculation of the MO energy is converted into Eaft (unit: eV) used as the HOMO value in the disclosure, according to the following rule. Eaft = 0.823168 χ 27.2114 x Epre - 1.07634 [098] Here, 27.2114 is a coefficient merely to convert hartree to eV, 0.823168 and -1.07634 are control coefficients and such coefficients are determined so that the HOMO of the objective compound for calculation is combined with the actually measured value. [099] ΔΕ is determined from the delta between the HOMO of the compound represented by Formula 1 and the HOMO of a polymerization initiator such as a borate compound. In many cases, the HOMO of the compound represented by Formula 1 is greater than the HOMO of such a polymerization initiator and the ΔΕ = HOMO of the compound represented by Formula 1 is satisfied - the HOMO of the polymerization initiator. [0100] The compound represented by Formula 1 can be used individually or in combination of two or more types of the same. The compound can be used as an infrared absorber in combination with a pigment and / or a dye. Petition 870190108854, of 10/25/2019, p. 41/118 10/31 [0101] The content of the infrared absorber in the image recording layer is preferably 0.1% by mass to 10.0% by mass, more preferably 0.5% by mass to 5.0% by weight in relation to to the total mass of the image recording layer. [0102] The content of the compound represented by Formula 1 in the image recording layer is preferably 0.1% by mass to 10.0% by mass, more preferably 0.5% by mass to 5.0% by mass in relation to the total mass of the image recording layer. -Other Infrared Absorber [0103] The image recording layer can include any infrared absorber other than the compound represented by Formula 1. [0104] Examples of such any other infrared absorber include a pigment and a dye other than the compound represented by Formula 1. [0105] The dye that will be used as such any other infrared absorber can be a commercially available dye and, for example, any known dye described in the documents, for example, "Dye Handbook" (edited by The Society of Synthetic Organic Chemistry, Japan, published in 1970). Its specific examples include dyes such as an azo dye, a metal complex azo dye, a pyrazolone azo dye, a naphthoquinone dye, anthraquinone dye, a phthalocyanine dye, a carbon dioxide dye, a quinone imine dye, a methin dye, a cyanine dye, a squaryl coloring agent, a pyrilium salt and a metal thiolate complex. [0106] Among these dyes, particularly preferable examples include a cyanine staining agent, a squaryl staining agent, a pyrilium salt, a nickel thiolate complex and a staining agent. Petition 870190108854, of 10/25/2019, p. 42/118 33/101 cyanine indolenine. In addition, examples include a cyanine coloring agent and an cyanine indolenine coloring agent. In particular, a cyanine coloring agent is particularly preferable. [0107] Specific examples of the cyanine staining agent include any compound described in paragraphs 0017 to 0019 of Japanese Patent Application Laid-Open (JP-A) No. 2001-133969, any compound described in paragraphs 0016 to 0021 of JP -A No. 2002-023360 and any compound described in paragraphs 0012 to 0037 of JP-A No. 2002-040638, preferably any compound described in paragraphs 0034 to 0041 of JP-A No. 2002-278057 and any compound described in paragraphs 0080 to 0086 of JP-A No. 2008-195018, particularly preferably any compound described in paragraphs 0035 to 0043 of JP-A No. 2007-90850 and any compound described in paragraphs 0105 to 0113 of JP-A No. 2012-206495 . [0108] Any compound described in paragraphs 0008 to 0009 of JP-A No. H05-5005 and any compound described in paragraphs 0022 to 0025 of JP-A No. 2001-222101 can also preferably be used. [0109] Any compound described in paragraphs 0072 to 0076 of JP-A No. 2008-195018 is preferable as the pigment. [0110] This other infrared absorber can be used individually or in combination with two or more types of it. Such pigment and dye can be used in combination in the infrared absorber. [0111] The content of this other infrared absorber in the image recording layer is preferably less than the content of the compound represented by Formula 1, more preferably 50% by mass or less than the content of the compound represented by Formula 1, even more preferably 20% by weight or less in relation to the content of the compound represented by Formula 1. Petition 870190108854, of 10/25/2019, p. 43/118 10/34 - Polymerization initiator [0112] The image recording layer contains a polymerization initiator. [0113] The polymerization initiator for use in the disclosure is a compound that generates species that initiate polymerization such as a radical or cation due to light energy, heat or both light and heat and, for example, a thermal polymerization initiator known, a compound that has a low dissociation binding energy bond and / or a light curing initiator can be selected and used appropriately. [0114] The polymerization initiator preferably contains an electron donor polymerization initiator starting from the point of view that the transfer of electrons to a compound represented by Formula 1 that has an -X group that removes specific electrons in a specified position is promoted and the printing durability and color forming capacity are increased. «Electron Donation Polymerization Initiator» [0115] An electron donor polymerization initiator is a compound that generates radicals due to the donation of an electron through the intermolecular transfer of electrons to an orbital of the infrared absorber, from which an element is removed, during excitation or the intramolecular transfer of any electron from the infrared absorber with exposure to infrared. [0116] The image recording layer most preferably contains an electron donor polymerization initiator from the point of view of an increase in print durability on the lithographic printing plate and examples of the electron donor polymerization initiator include the five electron donor polymerization to follow. [0117] Alkyl or arylate complex: considered to generate an active radical due to the oxidative degradation of a carbon-carbon bond. Specifically, it is Petition 870190108854, of 10/25/2019, p. 44/118 35/101 a borate compound is preferable. [0118] N-arylalkylamine compound: considered to generate an active radical due to the dividing of a C-X bond in the carbon adjacent to nitrogen, with oxidation. X preferably represents a hydrogen atom, a carboxyl group, a trimethylsilyl group or a benzyl group. Specific examples include N-phenylglycine (a phenyl group that optionally has a substituent.) And N-phenyliminodiacetic acid (a phenyl group that optionally has a substituent.). [0119] Sulfur-containing compound: any compound, in which a nitrogen atom of any amine described above is replaced by a sulfur atom, can generate an active radical due to the same action. Examples include phenylthioacetic acid (a phenyl group that optionally has a substituent.). [0120] Tin-containing compound: any compound, in which the nitrogen atom of any amine described above is replaced by a tin atom, can generate an active radical due to the same action. [0121] Sulfinate: which can generate an active radical through oxidation. Specific examples can include sodium aryl sulfinate. [0122] In particular, the image recording layer preferably contains a borate compound as the electron donor polymerization initiator from the point of view of printing durability and color-forming capability. [0123] The borate compound is preferably a tetraarylborate compound or a monoalkyltriarylborate compound, more preferably a tetraarylborate compound from the point of view of printing durability and color-forming ability. [0124] The indicator cation in the borate compound is not particularly limited and is preferably an alkali metal ion or an ion of Petition 870190108854, of 10/25/2019, p. 45/118 36/101 tetraalkylammonium, more preferably a sodium ion, a potassium ion or a tetrabutylammonium ion. [0125] Specific examples of the borate compound preferably include sodium tetrafenylborate. [0126] The electron donor polymerization initiator can be added individually or can be used in combination of two or more types of the same. [0127] The content of the electron donor polymerization initiator is preferably 0.01% by weight to 30% by weight, more preferably from 0.05% by weight to 25% by weight, even more preferably 0.1% by mass at 20% by mass relative to the total mass of the image recording layer. «Electron Receiver Polymerization Initiator» [0128] The polymerization initiator preferably contains an electron receptor polymerization initiator, more preferably it contains the electron donor polymerization initiator and an electron receptor polymerization initiator and even more preferably it consists of the electron donor polymerization initiator and an electron donor polymerization initiator. polymerization initiator electron receiver starting from the point of view of printing durability and capacity of color formation. [0129] An electron receptor polymerization initiator is a compound that generates radical due to the fact of accepting an electron through the intermolecular transfer of electrons in the excitation of any electron in the infrared absorber with exposure to infrared. [0130] The electron receptor polymerization initiator is preferably a compound of onium salt. [0131] The electron receptor polymerization initiator can be used alone or in combination of two or more types of it. Petition 870190108854, of 10/25/2019, p. 46/118 37/101 [0132] Examples of the electron receptor polymerization initiator include (a) organic halide, (b) a carbonyl compound, (c) an azo compound, (d) organic peroxide, (e) a metallocene compound, (f) an azide compound, (g) a hexaarylbiimidazole compound, (i) a disulfone compound, (j) an oxime ester compound and (k) an onium salt compound. [0133] Examples of organic halide (a) preferably include any compound described in paragraphs 0022 to 0023 of JP-A No. 2008-195018. [0134] Examples of the carbonyl compound (b) preferably include any compound described in paragraph 0024 of JP-A No. 2008-195018. [0135] Examples of the azo compound (c) that can be used include any azo compound described in JP-A No. H08-108621. [0136] Examples of organic peroxide (d) preferably include any compound described in paragraph 0025 of JP-A No. 2008-195018. [0137] Examples of the metallocene compound (e) preferably include any compound described in paragraph 0026 of JP-A No. 2008-195018. [0138] Examples of the azide compound (f) can include any compound such as 2,6-bis (4-azidabenzylidene) -4-methylcyclohexanone. [0139] Examples of the hexaarylbiimidazole compound (g) preferably include any compound described in paragraph 0027 of JP-A No. 2008-195018. [0140] Examples of the disulfone compound (i) include any compound described in JP-A No. S61-166544 and JP-A No. 2002-328465. [0141] Examples of the oxime ester compound (j) preferably include any compound described in paragraphs 0028 to 0030 of JP-A No. 2008-195018. [0142] The preferable examples among the electron receptor polymerization initiators above are any oxime ester compound and any onium salt compound from the point of view of curability. In Petition 870190108854, of 10/25/2019, p. 47/118 38/101 particular, an iodonium salt compound, a sulfonium salt compound or an azinium salt compound is preferable, an iodonium salt compound or a sulfonium salt compound is more preferable and a iodonium is particularly preferable from the standpoint of printing durability. [0143] Specific examples of such compounds are shown below, but are not limited to them in the disclosure. [0144] Specifically, the iodonium salt compound is preferably, for example, a diaryliodonium salt compound, in particular, an electron donor group, more preferably, for example, a diphenyliodonium salt compound substituted by an alkyl group or an alkoxy group or preferably an asymmetric diphenyliodonium salt compound. Specific examples include diphenyliodonium = hexafluorophosphate, 4-methoxyphenyl-4- (2-methylpropyl) phenyliodonium = hexafluorophosphate, 4- (2-methylpropyl) phenyl-p-tolyliodonium = hexafluorophosphate, 4-hexyloxyphenyl-2,4,6-trimethoxyphenyl hexafluorophosphate, 4-hexyloxyphenyl-2,4-diethoxyphenyliodonium = tetrafluoroborate, 4-octyloxyphenyl-2,4,6-trimethoxyphenyliodonium = 1-perfluorobutanesulfonate, 4-octyloxyphenyl-2,4,6-trimethoxyphenyliodonium = hexafluorophosphonate butylphenyl) iodonium = hexafluorophosphate. [0145] The sulfonium salt compound is preferably, for example, a triarylsulfonium salt compound, in particular, an electron removal group, for example, preferably a triarylsulfonium salt compound in which at least a part of ( s) group (s) on an aromatic ring is replaced by a halogen atom, even more preferably a triarylsulfonium salt compound in which the total number of halogen atoms with which the groups on an aromatic ring are replaced is 4 or more . Specific examples include triphenylsulfonium = hexafluorophosphate, triphenylsulfonium = benzoylformate, Petition 870190108854, of 10/25/2019, p. 48/118 39/101 bis (4-chlorophenyl) phenylsulfonium = benzoylformate, bis (4-chlorophenyl) -4-methylphenylsulfonium = tetrafluoroborate, tris (4-chlorophenyl) sulfonium = 3,5-bis (methoxycarbonyl) benzenesulfonate, tris (4-chlorophenyl) sulfonium = hexafluorophosphate and tris (2,4-dichlorophenyl) sulfonium = hexafluorophosphate. [0146] The indicator anion of the iodonium salt compound and the sulfonium salt compound is preferably a sulfonamide anion or a sulfonimide anion, more preferably a sulfonimide anion. [0147] Examples of the sulfonamide anion or the sulfonimide anion suitably include a sulfonamide anion or a sulfonimide anion in the compound represented by Formula 1. [0148] The content of the electron receptor polymerization initiator is preferably 0.1 wt% to 50 wt%, more preferably 0.5 wt% to 30 wt%, particularly preferably 0.8 wt% at 20% by mass relative to the total mass of the image recording layer. [0149] In a case where the polymerization initiator includes an electron donating polymerization initiator and an electron receiving polymerization initiator, an indicator salt may be formed by an electron donating polymerizable initiator and the electron receiving polymerization initiator or respective salts can be formed. -Polymerizable Compound [0150] The image recording layer contains a polymerizable compound. [0151] The polymerizable compound for use in the disclosure can be, for example, a radical polymerizable compound or a cation polymerizable compound and is preferably a polymerizable addition compound (ethylenically unsaturated compound) that has at least one ethylenically bonded Petition 870190108854, of 10/25/2019, p. 11/49 40/101 unsaturated. The ethylenically unsaturated compound is preferably a compound that has at least one terminal ethylenically unsaturated bond, more preferably a compound that has two or more terminal ethylenically unsaturated bonds. The polymerizable compound has a chemical form such as a monomer, a prepolymer, namely, a dimer, a trimer, an oligomer or a mixture thereof. [0152] Examples of the monomer include unsaturated carboxylic acid (e.g., acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid or maleic acid), an ester compound thereof and an amide compound and a monomer preferably used is an unsaturated carboxylic acid ester compound and a polyhydric alcohol compound or an unsaturated carboxylic acid amide compound and a polyvalent amine compound. For example, an addition reaction product of an unsaturated carboxylic acid ester compound that has a nucleophilic substituent such as a hydroxy group, an amino group or a mercapto group or an amide compound, with a monofunctional or polyfunctional isocyanate compound or an epoxy compound and a condensation product with dehydration with a monofunctional or polyfunctional carboxylic acid are also suitably used. An addition reaction product of an unsaturated carboxylic acid ester compound that has an electrophilic substituent such as an isocyanate group or an epoxy group or an amide compound, with a monofunctional or polyfunctional alcohol compound, an amine compound or a thiol compound and also a substitution reaction product of an unsaturated carboxylic acid ester compound that has a starting substituent such as a halogen atom or a tosyloxy group or an amide compound, with a monofunctional or polyfunctional alcohol compound , an amine compound or a thiol compound are also suitable. Another example, a compound can also be used, in which unsaturated carboxylic acid is Petition 870190108854, of 10/25/2019, p. 50/118 41/101 replaced by, for example, unsaturated phosphonic acid, styrene or vinyl ether. Such compounds are described, for example, in Japanese National Phase Publication (JP-A) No. 2006-508380, JP-A No. 2002-287344, JP-A No. 2008-256850, JP-A No. 2001- 342222, JP-A No. H09-179296, JP-A No. H09-179297, JP-A No. H09-179298, JP-A No. 2004-294935, JP-A No. 2006-243493, JP-A No. 2002-275129, JP-A No. 2003-64130, JP-A No. 2003-280187 and JP-A No. H10-333321. [0153] Specific examples of the acrylate monomer, such as the ester of the polyhydric alcohol compound and unsaturated carboxylic acid, include ethylene glycol diacrylate, 1,3-butanediol diacrylate, tetramethylene glycol diacrylate, propylene glycol diacrylate, triacrylate trimethylolpropane, hexanediol diacrylate, tetraethylene glycol diacrylate, pentaerythritol tetraacrylate, sorbitol triacrylate, isocyanuric acid modified ethylene (EO) triacrylate and a polyester acrylate oligomer. Examples of such a methacrylate monomer include tetramethylene glycol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropane trimethacrylate, ethylene glycol dimethacrylate, pentaerythritol trimethacrylate, bis [- (3-methacryloxy) -methyl-hydroxy-2-hydroxy] hydroxy p- (methacryloxyoxy) phenyl] dimethylmethane. Specific examples of the amide monomer of the polyvalent amine compound and the unsaturated carboxylic acid include methylenebisacrylamide, methylenebismethacrylamide, 1,6-hexamethylenebisacrylamide, 1,6-hexamethylenebismetacrylamide, diethylene triamine bisacrylamide xyl. [0154] Also suitable is a polymerizable urethane addition compound that is produced using an isocyanate addition reaction with a hydroxy group and its specific examples include a vinyl urethane compound that has two or more polymerizable vinyl groups in one molecule , which is obtained by adding a vinyl monomer that has a hydroxy group, represented by Formula (M) below, to a polyisocyanate compound that has two or more groups Petition 870190108854, of 10/25/2019, p. 51/118 42/101 isocyanate, described in Japanese Patent Publication (JP-B) No. S 48-41708. CH2 = C (R M4 ) COOCH 2 CH (R M5 ) OH (M) [0155] In Formula (M), R M4 and R M5 each independently represents a hydrogen atom or a methyl group. [0156] Suitable examples also include any urethane acrylate compound described in JP-A No. S51-37193, JP-B No. H02-32293, JP-B No. H02-16765, JP-A No. 2003- 344997 and JP-A No. 2006-65210, any urethane compound that has an ethylene oxide-based structure, described in JP-B No. S58-49860, JP-B No. S56-17654, JP-B No S62-39417, JP-B No. S62-39418, JP-A No. 2000-250211 and JP-A No. 2007-94138 and any urethane compound that has a hydrophilic group, described in US Patent No. 7153632, JP-A No. H08-505958, JP-A No. 2007-293221 and JP-A No. 2007-293223. [0157] The details of the method of use, for example, the structure of the polymerizable compound, the individual use or combination thereof and the amount added can be adjusted arbitrarily. [0158] The content of the polymerizable compound is preferably from 5% by weight to 75% by weight, more preferably from 10% by weight to 70% by weight, particularly preferably from 15% by weight to 60% by weight total image recording layer. -Acid stain trainer [0159] The image recording layer contains an acid stain trainer. [0160] The "acid dye builder" for use in the disclosure means a compound that has the property to develop any dye due to heating with an electron receptor compound (eg, acid proton) that will be accepted. The acid stain former is, in particular, preferably a colorless compound that has a partial structure such as lactone, lactam, Petition 870190108854, of 10/25/2019, p. 11/118 43/101 sultone, spiropyran, ester or amide and in which a partial structure will have the ring quickly opened or cleaved due to contact with an electron receptor compound. [0161] Examples of such an acid stain former include any phthalide compound such as 3,3-bis (4-dimethylaminophenyl) -6-dimethylaminophthalide (referred to as “Violet crystal lactone”), 3,3-bis (4 -dimethylaminophenyl) phthalide, 3- (4-dimethylaminophenyl) -3- (4-diethylamino-2-methylphenyl) -6-dimethylaminophthalide, 3- (4-dimethylaminophenyl) -3- (1,2-dimethylindol-3-yl) phthalide, 3- (4-dimethylaminophenyl) -3- (2-methylindol-3-yl) phthalide, 3.3- bis (1,2-dimethylindol-3-yl) -5-dimethylaminophthalide, 3.3- bis (1,2-dimethylindol-3-yl) -6-dimethylaminophthalide, 3.3- bis (9-ethylcarbazol-3-yl) -6-dimethylaminophthalide, 3.3- bis (2-phenylindol-3-yl) -6-dimethylaminophthalide, 3- (4-dimethylaminophenyl) -3- (1-methyl pyrrol-3-yl) -6-dimethylaminophthalide, 3,3-bis [1,1-bis (4-dimethylaminophenyl) ethylen-2-yl] -4,5,6,7-tetrachlorophthalide, 3.3- bis [1,1-bis (4-pyrrolizinophenyl) ethylen-2-yl] -4,5,6,7-tetrabromophthalide, 3.3- bis [1- (4-dimethylaminophenyl) -1- (4-methoxyphenyl) ethylen-2-yl] -4,5,6,7-tetraclo-phthalide, 3.3- bis [1- (4-pyrrolizinophenyl) -1- (4-methoxyphenyl) ethylen-2-yl] -4,5,6,7-tetrachlorophthalide, 3- [1,1 -di (1-ethyl-2 -methylindol-3-yl) ethylen-2-yl] -3- (4-diethylaminophenyl) phthalide, 3- [1,1 -di (1-ethyl-2-methylindol-3-yl) ethylen-2-yl] -3- (4-N-ethyl-N-phenylaminophenyl) phthalide, 3- (2-ethoxy- 4-diethylaminophenyl) -3- (1-n-octyl-2-methylindol-3-yl) phthalide, 3.3- bis (1-n-octyl-2-methylidol-3-yl) phthalide or 3- (2-methyl-4-diethylaminophenyl) -3- (1-n-octyl-2-methylindol-3-yl) phthalide, benzyl ether 4,4-bis-dimethylaminobenzohydrin, N-halophenyl-leucine auramine, N-2,4,5-trichlorophenilleuco auramine, Rhodamine-B-anilinolactam, Rhodamine- (4-nitroanilino) lactam, Rhodamine-B- (4-chloroanilino) lactam, Petition 870190108854, of 10/25/2019, p. 53/118 44/101 3,7-bis (diethylamino) -10-benzoylphenoxazine, benzoyl leuco methylene blue, blue 4-nitrobenzoylmethylene, any fluorane compound such as 3,6-dimethoxyfluorane, 3-dimethylamino-7-methoxyfluane, 3-diethylamino-6-methoxyfluane, 3-diethylamino-7-methoxyfluorane, 3-diethylamino-7-chlorofluorane, 3-diethylamino-6-methyl-7-chlorofluorane, 3-diethylamino-6,7-dimethylfluorane, 3-N-cyclohexyl-N-n-butylamino-7-methylfluorane, 3-diethylamino-7-dibenzylaminofluorane, 3-diethylamino-7-octylaminofluorane, 3-diethylamino-7-di-n-hexylaminofluorane, 3-diethylamino-7-anilinofluorane, 3-diethylamino-7- (2'-fluorophenylamino) fluorane, 3-diethylamino-7- (2'-chlorophenylamino) fluorane, 3-diethylamino-7- (3'-chlorophenylamino) fluorane, 3-diethylamino-7- (2 ', 3'-dichlorophenylamino) fluorane, 3-diethylamino-7- (3'-trifluoromethylphenylamino) fluorane, 3-di-n-butylamino-7- (2'-fluorophenylamino) fluorane, 3-di-n-butylamino-7- (2'-chlorophenylamino) fluorane, 3-N-isopentyl-N-ethylamino-7- (2'-chlorophenylamino) fluorane, 3-N-n-hexyl-N-ethylamino-7- (2'-chlorophenylamino) fluorane, 3-diethylamino-6-chloro-7-anilinofluorane, 3-diethylamino-6-methoxy-7-anilinofluorane, 3-pyrrolizine-6-methyl-7-anilinofluorane, 3-morpholino-6-methyl-7-anilinofluorane, 3-diethylamino-6-methyl-7-anilinofluorane, 3-di-n-butylamino-6-chloro-7-anilinofluorane 3-di-n-butylamino-6-ethoxy-7-anilinofluorane 3-piperidino-6-methyl-7-anilinofluorane 3-dimethylamino-6-methyl-7-anilinofluorane 3-di-n-butylamino-6-methyl-7-anilinofluorane 3-di-n-pentylamino-6-methyl-7-anilinofluorane, 3-N-ethyl-N-methylamino-6-methyl-7-anilinofluorane, 3-N-n-propyl-N-methylamino-6-methyl-7-anilinofluorane, 3-N-n-propyl-N-ethylamino-6-methyl-7-anilinofluorane, 3-N-n-butyl-N-methylamino-6-methyl-7-anilinofluorane, Petition 870190108854, of 10/25/2019, p. 54/118 45/101 3-N-n-butyl-N-ethylamino-6-methyl-7-anilinofluorane, 3-N-isobutyl-N-methylamino-6-methyl-7-anilinofluorane, 3-N-isobutyl-N-ethylamino-6-methyl-7-anilinofluorane, 3-N-isopentyl-N-ethylamino-6-methyl-7-anilinofluorane, 3-N-n-hexyl-N-methylamino-6-methyl-7-anilinofluorane, 3-N-cyclohexyl-N-ethylamino-6-methyl-7-anilinofluorane, 3-N-cyclohexyl-N-n-propylamino-6-methyl-7-anilinofluorane, 3-N-cyclohexyl-N-n-butylamino-6-methyl-7-anilinofluorane, 3-N-cyclohexyl-N-n-hexylamino-6-methyl-7-anilinofluorane, 3-N-cyclohexyl-N-n-octylamino-6-methyl-7-anilinofluorane, 3-N- (2'-methoxyethyl) -N-methylamino-6-methyl-7-anilinofluorane, 3-N- (2'-methoxyethyl) -N-ethylamino-6-methyl-7-anilinofluorane, 3-N- (2'-methoxyethyl) -N-isobutylamino-6-methyl-7-anilinofluorane, 3-N- (2'-ethoxyethyl) -N-methylamino-6-methyl-7-anilinofluorane, 3-N- (2'-ethoxyethyl) -N-ethylamino-6-methyl-7-anilinofluorane, 3-N- (3'-methoxypropyl) -N-methylamino-6-methyl-7-anilinofluorane, 3-N- (3'-methoxypropyl) -N-ethylamino-6-methyl-7-anilinofluorane, 3-N- (3'-ethoxypropyl) -N-methylamino-6-methyl-7-anilinofluorane, 3-N- (3'-ethoxypropyl) -N-ethylamino-6-methyl-7-anilinofluorane, 3-N- (2'-tetrahydrofurfuryl) -N-ethylamino-6-methyl-7-anilinofluorane, 3-N- (4'-methylphenyl) -N-ethylamino-6-methyl-7-anilinofluorane, 3-diethylamino-6-ethyl-7-anilinofluorane, 3-diethylamino-6-methyl-7- (3'-methylphenylamino) fluorane, 3-diethylamino-6-methyl-7- (2 ', 6'-dimethylphenylamino) fluorane, 3-di-n-butylamino-6-methyl-7- (2 ', 6'-dimethylphenylamino) fluorane, 3-di-n-butylamino-7- (2 ', 6'-dimethylphenylamino) fluorane, 2,2-bis [4 '- (3-N-cyclohexyl-N-methylamino-6-methylfluorane) -7-ylaminophenyl] propane, Petition 870190108854, of 10/25/2019, p. 55/118 46/101 3- [4 ’- (4-phenylaminophenyl) aminophenyl] amino-6-methyl-7-chlorofluorane or 3- [4 '- (dimethylaminophenyl)] amino-5,7-dimethylfluorane, a phthalide compound as 3- (2-methyl-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-azaftalide, 3- (2-n-propoxycarbonylamino-4-di-n-propylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4azaftalide, 3- (2-methylamino-4-di-n-propylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-azaftalide, 3- (2-methyl-4-din-hexylaminophenyl) -3- (1-n-octyl-2-methylindol-3-yl) -4,7-diazaftalide, 3,3-bis (2-ethoxy-4-diethylaminophenyl) -4-azaftalide, 3,3-bis (1-n-octyl-2-methylindol-3-yl) -4-azaftalide, 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4-azaftalide, 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-octyl-2-methylindol-3-yl) -4 or 7-azaftalide, 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4 or 7-azaftalide, 3- (2-hexyloxy-4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) -4 or 7-azaftalide, 3- (2-ethoxy-4-diethylaminophenyl) -3- (1-ethyl-2-phenylindol-3-yl) -4 or 7-azaftalide, 3- (2-butoxy-4-diethylaminophenyl) -3- (1-ethyl-2-phenylindol-3-yl) -4 or 7-azaftalide, 3-methyl-spiro-dinaftopyran, 3-ethyl-spiro-dinaftopyran, 3-phenyl-spiro-dinaftopyran, 3-benzyl-spiro-dinaftopyran, 3-methyl-naphtho- (3-methoxybenzo) spiropyran, 3-propyl-spiro-dibenzopyran-3,6-bis (dimethylamino) fluorene-9-spiro-3 '- (6'-dimethylamino phthalide or 3,6-bis (diethylamino) fluorene-9-spiro-3' - ( 6'-dimethylamino) phthalide and another compound as 2'-anilino-6 '- (N-ethyl-N-isopentyl) amino-3'-methylpiro [isobenzofuran-1 (3H), 9' - (9H) xante n-3-one, 2'-anilino-6 '- (N-ethyl-N- (4-methylphenyl)) amino-3'-methylpiro [isobenzofuran-1 (3H), 9' - (9H) x anten] -3-one, 3’-N, N-dibenzylamino-6’-N, N-diethylaminospiro [isobenzofuran-1 (3H), 9 ’- (9H) xanten] -3Petition 870190108854, 10/25/2019, p. 56/118 47/101 on or 2 '- (N-methyl-N-phenyl) amino-6' - (N-ethyl-N- (4-methylphenyl)) aminospiro [isobenzofuran-1 (3H), 9 '- (9H) xanten] -3- ona. [0162] In particular, the acid stain former for use in the disclosure is preferably at least one compound selected from the group consisting of a spiropyran compound, a spirooxazine compound, a spirolactone compound and a spirolactam compound starting from the view of color forming ability. [0163] The nuance of the coloring agent after color development is preferably green, blue or black from the point of view of visibility. [0164] A commercially available product can also be used as the acid stain former and examples include ETAC, RED500, RED520, CVL, S-205, BLACK305, BLACK400, BLACK100, BLACK500, H-7001, GREEN300, NIRBLACK78, BLUE220 , H-3035, BLUE203, ATP, H-1046 and H-2114 (all are manufactured by Fukui Yamada Chemical Co., Ltd.), ORANGE-DCF, Vermilion-DCF, PINK-DCF, RED-DCF, BLMB, CVL , GREEN-DCF and TH-107 (all manufactured by Hodogaya Chemical Co., Ltd.), ODB, ODB-2, ODB-4, ODB-250, ODB-BlackXV, Blue-63, Blue-502, GN- 169, GN-2, Green-118, Red-40 and Red-8 (all manufactured by YYamamoto Chemicals Inc.) and Violet crystal lactone (manufactured by Tokyo Chemical Industry Co., Ltd.). ETAC, S-205, BLACK305, BLACK400, BLACK100, BLACK500, H-7001, GREEN300, NIRBLACK78, H-3035, ATP, H-1046, H-2114, GREEN-DCF, Blue-63, GN-169 and Lactona de violet crystals are preferable among the commercially available products described above because the film to be formed has a favorable visible light absorption rate. [0165] Such acid stain builders can also be used individually or in combination of two or more types of components. [0166] The content of the acid stain former is preferably of Petition 870190108854, of 10/25/2019, p. 57/118 48/101 0.5 mass% to 10 mass%, more preferably from 1 mass% to 5 mass% in relation to the total mass of the image recording layer. -Polymeric particle [0167] The image recording layer may contain a polymeric particle. [0168] The polymeric particle is preferably selected from the group consisting of a thermoplastic polymeric particle, a thermally active polymeric particle, a polymeric particle which has a polymerizable group, a microcapsule that encapsulates a hydrophobic compound and microgel (cross-linked polymeric particle). In particular, a polymeric particle that has a polymerizable group or microgel is preferable. In a particularly preferable embodiment, the polymeric particle includes at least one ethylenically unsaturated polymerizable group. The presence of such a polymeric particle allows an effect to increase the printing durability of an exposed portion and the ability to develop an unexposed portion in the press, which will be obtained. [0169] The polymeric particle is preferably a thermoplastic polymeric particle. [0170] A preferred thermoplastic polymer particle is preferably any thermoplastic polymer particle described in Research Disclosure No.33303 published in January 1992, JP-A No. H09-123387, JP-A No. H09-131850, JP-A No. H09-171249 and JP-A No. H09-171250 and European Patent No. 931647. [0171] Specific examples of a polymer that constitutes such a thermoplastic polymer particle may include a homopolymer or a copolymer of an acrylate or methacrylate monomer that has a structure of ethylene, styrene, vinyl chloride, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, vinylidene chloride, acrylonitrile, carbazole or polyalkylene vinyl or a Petition 870190108854, of 10/25/2019, p. 11 588 49/101 mixture of them. Examples may preferably include polystyrene, a copolymer that contains styrene and acrylonitrile or polymethyl methacrylate. The average particle size of the thermoplastic polymer particle is preferably 0.01 pm to 3.0 pm. [0172] Examples of the thermally active polymeric particle include a polymeric particle that has a thermally reactive group. The thermally active polymeric particle forms a hydrophobic region due to crosslinking by a heating reaction and the change in the all functional group. [0173] In a case where the polymeric particle has a thermally reactive group, such a thermally reactive group can be any functional group as long as a chemical bond is formed and such a group is preferably a polymerizable group and the examples preferably include an ethylenically unsaturated group to carry out the radical polymerization reaction (for example, an acryloyl group, a methacryloyl group, a vinyl group or an allyl group), a cationic polymerizable group (for example, a vinyl group, a vinyloxy group, an epoxy group or an oxetanyl group), an isocyanate group for carrying out an addition reaction or blocking group thereof, an epoxy group, a vinyloxy group and a functional group that has an active hydrogen atom, which serves as its reaction partner (for example, an amino group, a hydroxy group or a carboxy group), a carboxy group for carrying out a condensation reaction and a hydroxy group or an amino group that serves with o a reaction partner of the same and an acid anhydride to carry out a ring opening addition reaction and an amino group or a hydroxy group that serves as a reaction partner of the same. [0174] Examples of the microcapsule include any microcapsule that encapsulates at least part of the constituent compounds of the image recording layer, as described in JP-A No. 2001-277740 and JP-A No. 2001-277742. The image recording layer can also contain any component Petition 870190108854, of 10/25/2019, p. 59/118 50/101 constituent outside the microcapsule. A preferable aspect of the image recording layer that contains the microcapsule is an aspect in which a hydrophobic constituent component is encapsulated in the microcapsule and a hydrophilic constituent component is contained outside the microcapsule. [0175] The microgel (cross-linked polymeric particle) may contain some of the constituent components of the image recording layer on or on the surface of the microgel. In particular, a reactive microgel that has a polymerizable radical group on its surface is preferable from the point of view of image formation sensitivity and printing durability. [0176] A known method can be applied in order to form constituent components of the image recording layer in the microcapsule or microgel. [0177] The polymeric particle is preferably one obtained by reacting a polyvalent isocyanate compound as an adduct of a polyhydric phenol compound that has two or more hydroxy groups in the molecule and isophorone diisocyanate, with a compound that has active hydrogen , from the point of view of printing durability, stain resistance and stability during storage. [0178] The polyhydric phenol compound is preferably a compound that has a large number of benzene rings having a phenolic hydroxy group. [0179] The compound that has active hydrogen is preferably a polyol compound or a polyamine compound, more preferably a polyol compound, even more preferably at least one compound selected from the group consisting of propylene glycol, glycerin and trimethylolpropane. [0180] Examples of a particle of a resin obtained through a reaction of the polyvalent isocyanate compound as an adduct of a polyhydric phenol compound that has two or more hydroxy groups in the molecule and diisocyanate of Petition 870190108854, of 10/25/2019, p. 60/118 51/101 isophorone, with the compound having active hydrogen, includes any polymeric particle described in paragraphs 0032 to 0095 of JP-A No. 2012-206495. [0181] The polymeric particle preferably has a hydrophobic backbone and includes both i) a constituent unit that has a cyan pendant group directly attached to the hydrophobic backbone and ii) a constituent unit that has a pendant group that includes an oxide segment hydrophilic polyalkylene, starting from the point of view of printing durability and resistance to solvents. [0182] Examples of the hydrophobic backbone preferably include an acrylic resin chain. [0183] Examples of the pendant cyan group include - [CH2CH (C ^ N) -] or - [CH 2 C (CH 3 ) (CeN) -]. [0184] The constituent unit having a cyan pendant group can easily be derived from an ethylene-based unsaturated monomer, for example, acrylonitrile or methacrylonitrile or a combination thereof. [0185] The alkylene oxide in the hydrophilic polyalkylene oxide segment is preferably ethylene oxide or propylene oxide, more preferably ethylene oxide. [0186] The repetition number of the alkylene oxide structure in the hydrophilic polyalkylene oxide segment is preferably 10 to 100, more preferably 25 to 75, even more preferably 40 to 50. [0187] Examples of the resin particle that has a hydrophobic backbone and includes both i) a constituent unit that has a cyan pendant group directly attached to the hydrophobic backbone and ii) a constituent unit that has a pendant group that includes a segment of hydrophilic polyalkylene oxide include any particle described in paragraphs 0039 to 0068 of JP-A No. 2008-503365. Petition 870190108854, of 10/25/2019, p. 61/118 52/101 [0188] The average particle size of the polymeric particle is preferably from 0.01 pm to 3.0 pm, more preferably from 0.03 pm to 2.0 pm, even more preferably from 0.10 pm to 1.0 pm . Such a range allows favorable resolution and stability in aging to be achieved. [0189] The average primary particle size of each particle described above in the disclosure is measured using a light scattering method or determined by taking an electron micrograph of the particle and measuring the particle size in the micrograph for 5,000 of the particles in total for that. way to calculate the average value. In the case of a non-spherical particle, the particle size value of a spherical particle that has the same particle area as that of the non-spherical particle in the micrograph is defined as the particle size. [0190] The average particle size in the disclosure means the average particle size by volume, unless specifically mentioned. [0191] The content of the polymeric particle is preferably 5% by mass to 90% by mass in relation to the total mass of the image recording layer. -Polymer Binder [0192] The image recording layer may contain a polymer binder. [0193] The binder polymer is preferably a (meth) acrylic resin, a polyvinyl acetal resin or a polyurethane resin. [0194] In particular, a polymer binder known for use in the image recording layer of a lithographic printing plate precursor can be suitably used as the polymer binder mentioned above. An example of this is described in detail, in relation to a binder polymer for use in a press development lithographic printing plate precursor (later here, also referred to here as "press development binder polymer"). [0195] The binder polymer for developing on the press is preferably a Petition 870190108854, of 10/25/2019, p. 62/118 53/101 binding polymer that has an alkylene oxide chain. The binder polymer that has an alkylene oxide chain can have a poly (alkylene oxide) site on a main chain or a side chain. The binding polymer can also be a graft polymer that has poly (alkylene oxide) in a side chain or a block copolymer of a block consisting of a repeating unit containing poly (alkylene oxide) and a block consisting of a repetition unit that does not contain (alkylene oxide). [0196] In a case where the polymer binder has a poly (alkylene oxide) site in a main chain, the polymer binder is preferably a polyurethane resin. In a case where the binder polymer has a poly (alkylene oxide) site on a side chain, examples of the polymer on a main chain include a (meth) acrylic resin, a polyvinyl acetal resin, a polyurethane resin, a polyurea resin, a polyimide resin, a polyamide resin, an epoxy resin, a polystyrene resin, a novolac phenol resin, a polyester resin, synthetic rubber and natural rubber and a (meth) acrylic resin is particularly preferable. [0197] Other preferred examples of the polymer binder include a polymeric compound that includes functional hexa to deca thiol that serves as a nucleus and that has a polymeric chain attached to the nucleus through a sulfide bond, in which the polymeric chain has a polymerizable group (later here, also referred to here as “polymeric star compound”.). The polymeric star compound that can preferably be used is any compound described in JP-A No. 2012-148555. [0198] Examples of the polymeric star compound include a compound that has a polymerizable group, such as an ethylenically unsaturated bond, for an increase in film hardness of an image area, in a main chain or a side chain, preferably in a side chain, described in Petition 870190108854, of 10/25/2019, p. 63/118 54/101 JP-A No. 2008-195018. Such a polymerizable group allows cross-linking between polymer molecules that will be formed, resulting in the promotion of healing. [0199] The polymerizable group is preferably an ethylenically unsaturated group such as a (meth) acrylic group, a vinyl group, an allyl group or a styryl group or an epoxy group and is more preferably a (meth) acrylic group, a vinyl group or a styrene group, particularly preferably a (meth) acrylic group starting from the point of view of polymerization reactivity. Such a group can be introduced into the polymer through a polymerization or copolymerization reaction. For example, a reaction of a polymer having a carboxy group on a side chain with glycidyl methacrylate or a reaction of a polymer having an epoxy group with carboxylic acid containing ethylenically unsaturated group such as methacrylic acid can be used. Such groups can be used in combination. [0200] The molecular weight of the binder polymer is preferably 2,000 or more, more preferably 5,000 or more, even more preferably 10,000 to 300,000 in terms of the average weight molecular weight (Mw) as a polystyrene conversion value according to a method GPC. [0201] Any hydrophilic polymer such as polyacrylic acid or polyvinyl alcohol described in JP-A No. 2008-195018 can, if necessary, be used in combination. A lipophilic polymer and a hydrophilic polymer can be used in combination. [0202] The polymer binder can be used individually or in combination of two or more types thereof, in the image recording layer for use in the disclosure. [0203] The binder polymer can be contained in any quantity in the image recording layer and the content of the binder polymer is preferably from 1% by mass to 90% by mass, more preferably 5% Petition 870190108854, of 10/25/2019, p. 64/118 55/101 by mass at 80% by mass relative to the total mass of the image recording layer. - Chain Transfer Agent [0204] The image recording layer for use in disclosure may contain a chain transfer agent. The chain transfer agent contributes to an increase in printing durability on the lithographic printing plate. [0205] The chain transfer agent is preferably a thiol compound, more preferably a thiol that has 7 or more carbon atoms, even more preferably a compound that has a mercapto group in an aromatic ring (aromatic thiol compound) leaving from the point of view of the boiling point (difficulty of volatilization). The thiol compound is preferably a monofunctional thiol compound. [0206] Specific examples of the chain transfer agent include the following compounds. Petition 870190108854, of 10/25/2019, p. 65/118 56/101 N — N H 3 CHNOCHN HS Petition 870190108854, of 10/25/2019, p. 66/118 57/101 H 3 C ' X SH H 3 C, H 3 C '''-' ^ ---- • '' SH Η3% ,. · - , · ' SH h 3 ch 3 c .., ··· ... · ...... //./-. ,, -. //. / - SH HsC · '---' ·· '/ · ^^ H 3 C - - --.---., · -'-., - ·' -., -., - '' 3Η HS [0207] The chain transfer agent can be added individually or can be used in combination of two or more types thereof. [0208] The content of the chain transfer agent is preferably 0.01 wt% to 50 wt%, more preferably 0.05 wt% to 40 wt%, even more preferably 0.1% wt mass to 30% by mass relative to the total mass of the image recording layer. - Low Molecular Weight Hydrophilic Compound [0209] The image recording layer may contain a low molecular weight hydrophilic compound in order to increase Petition 870190108854, of 10/25/2019, p. 67/118 58/101 press development with deterioration in print durability being suppressed The low molecular weight hydrophilic compound is preferably a compound having a molecular weight less than 1,000, more preferably a compound having a molecular weight less than 800, even more preferably a compound having a molecular weight less than 500. [0210] Examples of the low molecular weight hydrophilic compound, for example, a water-soluble organic compound, include a glycol compound such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol or tripropylene glycol and an ether or an ester derived therefrom, a polyol compound such as glycerin, pentaerythritol or tris (2-hydroxyethyl) isocyanurate, an organic amine compound such as triethanolamine, diethanolamine or monoethanolamine and a salt thereof, an organic sulfonic acid compound such such as alkyl sulfonic acid, toluenesulfonic acid or benzenesulfonic acid and a salt thereof, an organic sulfamic acid compound such as alkyl sulfamic acid and a salt thereof, an organic sulfuric acid compound such as alkyl sulfuric acid, sulfuric acid alkyl ether and a salt of it, an organic phosphonic acid compound such as phenylphosphonic acid and a salt thereof, an organic carboxylic acid compound such such as tartaric acid, oxalic acid, citric acid, malic acid, lactic acid, gluconic acid or amino acid compound and a salt thereof and a betaine compound. [0211] It is preferable to contain at least one selected from a polyol compound, an organic sulfate compound, an organic sulfonate compound or a betaine compound, as a low molecular weight hydrophilic compound. [0212] Specific examples of the organic sulfonate compound include alkylsulfonate such as sodium n-butyl sulfonate, sodium n-hexyl sulfonate, sodium 2-ethylhexyl sulfonate, sodium cyclohexyl sulfonate or sodium n-octyl sulfonate; alkylsulfonate including an ethylene oxide chain, such as Petition 870190108854, of 10/25/2019, p. 68/118 59/101 5,8,11-trioxapentadecane-1-sodium sulfonate, 5,8,11-trioxaheptadecane-1-sulfonate, 13-ethyl-5,8,11-trioxaheptadecane-1-sulfonate or 5,8, 11,14-sodium tetraoxathetracosane-1-sulfonate; aryl sulfonate such as sodium benzenesulfonate, sodium p-toluenesulfonate, sodium p-hydroxybenzenesulfonate, sodium p-styrenesulfonate, sodium isophthalic acid dimethyl-5-sulfonate, sodium 1-naphthylsulfonate, sodium 4-hydroxinephylsulfonate Sodium 1,5-naphthalenedisulfonate or sodium 1,3,6-naphthalenedisulfonate and any compound described in paragraphs 0026 to 0031 of JP-A No. 2007-276454 and in paragraphs 0020 to 0047 of JP-A No. 2009-154525 . Such a salt can be a potassium salt or a lithium salt. [0213] Examples of the organic sulfate compound include alkyl, alkenyl, alkynyl, alkynyl, aryl or polyethylene oxide monoether sulfate. The number of ethylene oxide unit (s) is preferably 1 to 4 and the salt is preferably a sodium salt, a potassium salt or a lithium salt. Specific examples include any compound described in paragraphs 0034 to 0038 of JP-A No. 2007-276454. [0214] The betaine compound is preferably a compound with a hydrocarbon substituent that has 1 to 5 carbon atoms in a nitrogen atom and specific examples include trimethylammonium acetate, dimethylpropylammonium acetate, 3-hydroxy-4-trimethylammoniumbutyrate, 4- (1-pi ridin io) buti rat, 1-hydroxyethyl-1-imidazolioacetate, trimethylammonium methanesulfonate, dimethylpropylammonium methanesulfonate and 3-trimethylammonium-1-propanesulfonate and 3- (1-pyridine) -1-propanesulfonate. [0215] The low molecular weight hydrophilic compound has a small structure of a hydrophobic group and has almost no surface activity and thus can allow the image recording layer to favorably maintain the ability to accept ink and print durability without Petition 870190108854, of 10/25/2019, p. 69/118 60/101 any deterioration in the hydrophobicity and film hardness of an image area due to the fact that wetting water penetrates an exposed portion (image area) of the image recording layer. [0216] The content of the low molecular weight hydrophilic compound is preferably 0.5% by weight to 20% by weight, more preferably from 1% by weight to 15% by weight, even more preferably 2% by weight to 10%. % by mass relative to the total mass of the image recording layer. Such a strip allows the development capacity of the press and the durability of printing to be obtained. [0217] The low molecular weight hydrophilic compound can be used individually or in a mixture of two or more types of it. -Sensitizer [0218] The image recording layer may contain a sensitizer such as a phosphonium compound, a low molecular weight compound that contains nitrogen or a polymer that contains an ammonium group for an improvement of the paint application properties. In particular, in a case where a protective layer contains a compound with an inorganic layer, such a compound can serve as an agent that covers the surface of the compound with an inorganic layer, thus allowing deterioration in the paint application properties due to the fact that the compound with an inorganic layer will be omitted when printing. [0219] The sensitizer is preferably used as a combination of a phosphonium compound, a low molecular weight compound that contains nitrogen and a polymer that contains ammonium group, most preferably used as a combination of a phosphonium compound, a salt compound of quaternary ammonium and a polymer containing an ammonium group. [0220] Examples of the phosphonium compound include any phosphonium compound described in JP-A No. 2006-297907 and JP-A No. 2007-50660. The examples Petition 870190108854, of 10/25/2019, p. 70/118 61/101 specifics include tetrabutylphosphonium iodide, butyltriphenylphosphonium bromide, tetrafenylphosphonium bromide, 1,4-bis (triphenylphosphonium) butane = di (hexafluorophosphate), 1,7-bis (triphenylphosphonium) heptane = sulfate and 1,9-bis (triphenylphosphonium) nonane = naphthalene-2,7-disulfonate. [0221] Examples of the low molecular weight nitrogen-containing compound include an amine salt compound and a quaternary ammonium salt compound. Examples also include an imidazolium salt compound, a benzoimidazolium salt compound, a pyridinium salt compound and a quinolinium salt compound. In particular, the examples preferably include a quaternary ammonium salt compound and a pyridinium salt compound. Specific examples include tetramethylammonium = hexafluorophosphate, tetrabutylammonium = hexafluorophosphate, dodecyltrimethylammonium = p-toluenesulfonate, benzyltriethylammonium = hexafluorophosphate; 0030 to 0057 of JP-ANo. 2009-90645. [0222] The polymer containing ammonium group may have an ammonium group in the structure and is preferably a polymer that has 5% per mol to 80% per mol of (meth) acrylate which has an ammonium group in a side chain, as a component copolymerization. Specific examples include any polymer described in paragraphs 0089 to 0105 of JP-A No. 2009-208458. [0223] The polymer containing ammonium salt is preferably a polymer that has a reduced specific viscosity value (unit: mL / g) in a range of 5 to 120, more preferably in a range of 10 to 110, particularly preferably in a range of 15 to 100, determined by a measurement method described in JP-A No. 2009-208458. The reduced specific viscosity is preferably from 10,000 to 150,000, more preferably from Petition 870190108854, of 10/25/2019, p. 71/118 62/101 17,000 to 140,000, particularly preferably 20,000 to 130,000, when converted to the average weight molecular weight (Mw). [0224] Specific examples of the polymer containing the ammonium group are shown below. copolymer in methacrylate in 2- (trimethylammonium) ethyl = p-toluenesulfonate / methacrylate(10/90 molar ratio, Mw 45,000) in 3,6-dioxaheptila copolymer in methacrylate in 2- (trimethylammonium) ethyl = hexafluorophosphate / 3,6-dioxaheptyl methacrylate (20/80 molar ratio, Mw 60,000) methacrylate copolymer 2- (Ethyldimethylammonium) ethyl = p-toluenesulfonate / hexyl methacrylate (molar ratio 30/70, Mw 45,000) methacrylate copolymer of 2- (trimethylammonium) ethyl = hexafluorophosphate / 2-ethylhexyl methacrylate (20/80 molar ratio, Mw 60,000) 2- (trimethylammonium) methacrylate copolymer ethyl = methyl sulfate / hexyl methacrylate (40/60 molar ratio, Mw 70,000) methacrylate copolymer 2- (butyldimethylammonium) ethyl = hexafluorophosphate / 3,6-dioxaheptyl methacrylate (molar ratio 25/75, Mw 65,000) acrylate copolymer 2- (butyldimethylammonium) ethyl = hexafluorophosphate / 3,6-dioxaheptyl methacrylate (20/80 molar ratio, Mw 65,000) methacrylate copolymer 2- (butyldimethylammonium) ethyl = 13-ethyl I-5,8,11 -trioxa-1-heptadecanesulfonate / 3,6-dioxaheptyl methacrylate (20/80 molar ratio, Mw 75,000) Petition 870190108854, of 10/25/2019, p. 72/118 63/101 methacrylate copolymer of 2- (butyldimethylammonium) ethyl = hexafluorophosphate / methacrylate 3,6-dioxaheptyl / 2-hydroxy-3-methacryloyloxypropyl methacrylate (molar ratio 15/80/5, Mw 65,000) [0225] The content of the sensitizer is preferably from 0.01 wt% to 30.0 wt%, more preferably from 0.1 wt% to 15.0 wt%, even more preferably from 1 wt% to 10% by mass relative to the total mass of the image recording layer. -Other Component (s) [0226] The image recording layer may contain other component (s) such as a surfactant, a polymerization inhibitor, a higher fatty acid derivative, a plasticizer , an inorganic particle and a compound with an inorganic layer. Specifically, such component (s) can be found with reference to the description in paragraphs 0114 to 0159 of JP-A No. 2008-284817. - Formation of Image Recording Layer [0227] The image recording layer in the lithographic printing plate precursor according to the disclosure can be formed, for example, by dispersing or dissolving the respective necessary components described above in a known solvent to thereby prepare a coating solution by coating a support with the coating solution according to a known method such as coating with a bar coat and drying the resultant, as described in paragraphs 0142 to 0143 of JP- No. 2008-195018. The amount (solids content) of coating of the image recording layer after coating and drying varies depending on the intended use and is preferably from 0.3 g / m 2 to 3.0 g / m 2 . Such a range allows favorable sensitivity and favorable film properties of the image recording layer to be obtained. Petition 870190108854, of 10/25/2019, p. 73/118 64/101 [0228] A known solvent can be used as the solvent. Specific examples include water, acetone, methyl ethyl ketone (2-butanone), cyclohexane, ethyl acetate, ethylene dichloride, tetrahydrofuran, toluene, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol dimethyl ether, ether propylene glycol monomethyl, propylene glycol monoethyl ether, acetyl acetone, cyclohexanone, alcohol diacetone, ethylene glycol monomethyl ether acetate, ethylene glycol ethyl ether acetate, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether acetate, 1 -methoxy-2-propanol, 3-methoxy-1-propanol, methoxymethoxyethanol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, 3-methoxypropyl acetate, N, N-dimethylformamide, dimethylsulfoxide, γ-butyrolactone, methyl lactate and ethyl lactate. The solvent can be used individually or in combination with two or more types of it. The concentration of the solids content in the coating solution is preferably approximately 1 to 50% by weight. [0229] The amount (solids content) of coating of the image recording layer after coating and drying varies depending on the intended use and is preferably approximately 0.3 to 3.0 g / m 2 from the point of view to provide favorable sensitivity and favorable film properties of the image recording layer that will be obtained. <Hydrophilic Support> [0230] The hydrophilic support (hereinafter also simply referred to as "support".) In the lithographic printing plate precursor according to the disclosure can be appropriately selected from a known hydrophilic support for a lithographic printing plate precursor and can be used. The hydrophilic support is preferably an aluminum plate subjected to a Petition 870190108854, of 10/25/2019, p. 74/118 65/101 surface crimping treatment and anodizing treatment according to a known method. [0231] The aluminum plate can be, if necessary, additionally subjected to any treatment appropriately selected from a micropore enlargement treatment or an anodized film pore sealing treatment, described in JP-A No. 2001-253181 and in JP-A No. 2001-322365, a hydrophilic surface treatment with alkali metal silicate, described in each US Patent Nos. 2,714,066, 3,181,461, 3,280,734 and 3,902,734 or a hydrophilic treatment of a surface, with polyvinyl phosphonic acid or similar, described in each specification of U.S. Patent Nos. 3,276,868,4,153,461 and 4,689,272. [0232] The support preferably has an average roughness on the center line of 0.10 pm to 1.2 pm. [0233] The support may, if necessary, have a backing layer that includes an organic polymeric compound, described in JP-A No. H05-45885 or a backing layer that includes a silicon alkoxy compound, described in JP -A No. H06-35174, on its surface, the surface being located opposite the image recording layer. cBase Coating Layer> [0234] The precursor of the lithographic printing plate according to the disclosure preferably includes a base coat layer (sometimes referred to as an "intermediate layer") between the image recording layer and the support. The base coat layer allows the adhesion between the support and the image recording layer to be enhanced on an exposed portion and allows the flaking of the image recording layer on the support to occur easily in an unexposed portion and thus contributes to an improvement in developing capabilities without any durability of Petition 870190108854, of 10/25/2019, p. 75/118 66/101 impression is decreased. The base coating layer also serves as a heat insulating layer on the infrared laser exposure and thus has an effect of preventing a reduction in sensitivity due to the diffusion of heat generated by the exposure, into the support. [0235] Examples of the compound for use in the base coat layer include a polymer that has an adsorbable group that can be adsorbed on the surface of the support and a hydrophilic group. A polymer that has an adsorbable group and a hydrophilic group and that additionally has a crosslinkable group is preferable for an increase in adhesiveness to the image recording layer. The compound for use in the base coating layer can be a low molecular weight compound or polymer. The compound for use in the base coating layer can, if necessary, be mixed with two or more types of the same. [0236] In a case where the compound for use in the base coating layer is a polymer, a monomer copolymer that has an adsorbable group, a monomer that has a hydrophilic group and a monomer that has a crosslinkable group is preferable . [0237] The adsorbable group that can be adsorbed on the support surface is preferably a phenolic hydroxy group, a carboxy group, -PO3H2, -OPO3H2, -CONHSO2-, -SO2NHSO2- or -COCH2COCH3. The hydrophilic group is preferably a sulfo group or a salt thereof or a salt of a carboxy group. The crosslinkable group is preferably an acrylic group, a methacrylic group, an acrylamide group, a methacrylamide group or an allyl group. [0238] The polymer may have a crosslinkable group introduced by the formation of salt of a polar substituent on the polymer and a compound that has a substituent that has a charge opposite to that of the polar substituent and an ethylenically unsaturated bond or may be one in which any other monomer other than the previous 0, Petition 870190108854, of 10/25/2019, p. 76/118 67/101 preferably a hydrophilic monomer, is additionally copolymerized. [0239] Specific examples suitably include a silane coupling agent that has an ethylenically double bonding reaction group polymerized by addition, described in JP-A No. H10-282679 and a phosphorus compound that has a reaction group of ethylenically double bond, described in JP-A No. H02-304441. A low molecular weight or polymeric compound that preferably has a crosslinkable group (preferably an ethylenically unsaturated bonding group), a functional group that interacts with the support surface and a hydrophilic group, described in JP-A No. 2005, is also preferably used. -238816, JP-A No. 2005-125749, JP-A No. 2006-239867 and JP-A No. 2006-215263. [0240] More preferably, a polymer is exemplified that has an adsorbable group that can be adsorbed on the support surface, a hydrophilic group and a crosslinkable group, described in JP-A No. 2005-125749 and JP-A No. 2006-188038. [0241] The content of the ethylenically unsaturated bond in the polymer for use in the base coating layer is preferably 0.1 mmol to 10.0 mmol, more preferably 0.2 mmol to 5.5 mmol per gram of the polymer. [0242] The average molecular weight (Mw) of the polymer for use in the base coating layer is preferably 5,000 or more, more preferably 10,000 to 300,000. [0243] The base coating layer may contain a chelator, secondary or tertiary amine, a polymerization inhibitor or a compound that has not only an amino group or a functional group that has the ability to inhibit polymerization, but also a group that interacts with the surface of the support (for example, 1,4-diazabicyclo [2.2.2] octane (DABCO), 2,3,5,6-tetrahydroxy-p-quinone, chloranil, sulfophthalic acid, hydroxyethylethylenediaminetriacetic acid, dihydroxyethylethylenediamine diacetic or hydroxyethyliminodiacetic acid), other than Petition 870190108854, of 10/25/2019, p. 77/118 68/101 compound for the base coat layer, to prevent staining caused by aging. [0244] The base coat layer is applied according to a known method. The amount (solids content) of coating of the base coating layer is preferably 0.1 mg / m 2 to 100 mg / m 2 , more preferably 1 mg / m 2 to 30 mg / m 2 . cProtective layer> [0245] The precursor to the lithographic printing plate according to the disclosure preferably includes a protective layer (sometimes referred to as a “cover layer”.) Over the image recording layer. The protective layer not only has the function of suppressing an image inhibition reaction caused by oxygen blocking, but also the function of preventing the image recording layer from being scratched and the function of preventing ablation on exposure to laser with high illumination intensity. [0246] The protective layer that has such properties is described, for example, in U.S. Patent No. 3,458,311 and JP-B No. S55-49729. Either a water-soluble polymer or a water-insoluble polymer can be appropriately selected and used as a low oxygen permeation polymer for use in the protective layer and can, if necessary, be used as a mixture of two or more types of same. Specific examples include polyvinyl alcohol, modified polyvinyl alcohol, polyvinyl pyrrolidone, a water-soluble cellulose derivative and poly (meth) acrylonitrile. [0247] An acid-modified polyvinyl alcohol that has a carboxy group or a sulfo group is preferably used as the modified polyvinyl alcohol. Specific examples include modified polyvinyl alcohol described in JP-A No. 2005-250216 and JP-A No. 2006-259137. [0248] The protective layer preferably contains a compound with Petition 870190108854, of 10/25/2019, p. 78/118 69/101 inorganic layer in order to improve the oxygen blocking properties. The compound with an inorganic layer is a particle that has a thin plate shape and examples include a group of mica such as natural mica or synthetic mica, talc represented by Formula 3MgO4SiOH20, taeniolite, montmorillonite, saponite, hectorite and zirconium phosphate. [0249] A compound with an inorganic layer preferably used is a mica compound. Examples of the mica compound include a mica group such as natural mica or synthetic mica represented by Formula A (B, C) 2-sD40io (OH, F, 0) 2 [where A represents any of K, Na or Ca, B and C each represent any of Fe (II), Fe (III), Μη, Al, Mg or V and D represents any of Si or Al.]. [0250] Examples of the mica group, for example, natural mica include white mica, soda mica, golden mica, black mica and scale mica. Examples of synthetic mica include non-swellable mica such as fluorinated golden mica KMg3 (AISÍ30io) F2 or potassium tetrasilicon mica (KMg2, sSÍ40io) F2 and intumescible mica such as NaMg2 sodium tetrasilicon mica, s (SiSyolite) F2, Na or Li (Na, Li) Mg2 Li (Silicon) F2 or Na or Li hectorite of the type montmorillonite (Na, Li) i / sMg2 / 5 Lii / s (Silicon) F2. In addition, synthetic smectite is also useful. [0251] Fluorine-based swelling mica is particularly useful among the mica compounds described above. This means that the intumescible synthetic mica has a stacked structure made up of a unitary crystal lattice layer that has a thickness of 10 Å to 15 Å (1 Å = 0.1 nm) and is noticeably greater in replacing the metal atom interlaced than another clay mineral. As a result, a lattice layer is made insufficient in relation to the positive cause and a positive ion such as Li + , Na + , Ca 2+ or Mg 2+ to compensate for such a charge is adsorbed between the layers. Such a positive ion placed between the layers is called an exchangeable positive ion and can be exchanged for Petition 870190108854, of 10/25/2019, p. 79/118 70/101 any one of several positive ions. In particular, in a case where the positive ion between the layers is Li + or Na + , whose ion radius is small, thereby causing a weak bond between the layered crystal lattices, resulting in significant swelling caused by water. A shear force is applied in this state in order to easily allow diving, resulting in the formation of a stable sun in water. Intumescent synthetic mica tends to behave in this way enormously and is thus particularly preferred. [0252] The mica compound most preferably has a thinner shape in relation to the thickness from the point of view of the control of dysfusion and more preferably has a flat surface larger in size as long as the uniformity of a coated surface or the permeability of the rays actinic is not readjusted. Consequently, the aspect ratio is preferably 20 or more, more preferably 100 or more, particularly preferably 200 or more. The aspect ratio means the proportion of the longest size to the thickness of the particle and can be measured, for example, based on a projection view with a micrograph of the particle. A greater aspect ratio gives a greater effect obtained. [0253] The particle size of the mica compound is preferably from 0.3 pm to 20 pm, more preferably from 0.5 pm to 10 pm, particularly preferably from 1 pm to 5 pm in terms of the average longest size. The average particle thickness is preferably 0.1 pm or less, more preferably 0.05 pm or less, particularly preferably 0.01 pm or less. Specifically, for example, swellable synthetic mica as a representative compound has a thickness of approximately 1 nm to 50 nm and a surface size (larger size) of approximately 1 pm to 20 pm in a preferable aspect. Petition 870190108854, of 10/25/2019, p. 80/118 71/101 [0254] The content of the compound with inorganic layer is preferably from 1% by weight to 60% by weight, more preferably from 3% by weight to 50% by weight in relation to the total solids content of the protective layer. Even in the case of use in combination with a large number of compounds with inorganic layers, the total amount of the compounds with inorganic layers preferably corresponds to the above content. Such a range allows an improvement in the oxygen blocking properties, through which a favorable sensitivity is obtained. Deterioration in paint application properties can also be prevented. [0255] The protective layer may contain additive (s) known such as a plasticizer to provide flexibility, a surfactant for an improvement in coating capacity and / or an inorganic particle to control the sliding ability of the surface. The protective layer may contain the oil sensitizing agent described in relation to the image recording layer. [0256] The protective layer is applied according to a known method. The amount (solids content) of coating of the protective layer is preferably from 0.01 g / m 2 to 10 g / m 2 , more preferably from 0.02 g / m 2 to 3 g / m 2 , particularly preferably from 0 , 02 g / m 2 to 1 g / m 2 . (Method of Preparation of Lithographic Printing Plate) [0257] The precursor of the lithographic printing plate according to the disclosure can be prepared by performing the image exposure and a developing treatment. [0258] The method of preparing a lithographic printing plate according to the disclosure preferably includes a step of exposing the lithographic printing plate precursor to the image according to the disclosure, thus forming an exposed portion and an unexposed portion ( later here, also referred to here as “exposure stage”.) and a Petition 870190108854, of 10/25/2019, p. 81/118 72/101 at least one of printing ink or moistening water, thereby removing the unexposed portion (later here, also referred to here as “press development stage”.) In the order listed. [0259] The method of preparing a lithographic printing plate according to the disclosure preferably includes a step of exposing the lithographic printing plate precursor to the image according to the disclosure, which includes the polymerization initiator and the polymerizable compound, by laser and a step of removing an unexposed portion of the image recording layer by developer in a bath that has a pH of 2 to 11. [0260] Subsequently here, preferable aspects of respective steps in the method of preparing a lithographic printing plate according to the disclosure and in the lithographic printing method according to the disclosure will be described sequentially. The lithographic printing plate precursor according to the disclosure can also be developed by a developer. <Exposure Stage> [0261] The method of preparing a lithographic printing plate according to the disclosure preferably includes a step of exposing the lithographic printing plate precursor to the image according to the disclosure, thus forming an exposed portion and an unexposed portion. The precursor of the lithographic printing plate according to the disclosure is preferably exposed by laser to an original transparent design that has an image of lines, an image of halftone dots and similar or exposed to the image by scanning laser beams or similar with digital data. [0262] The wavelength of a light source, preferably used, is 750 nm to 1,400 nm. A light source from 750 nm to 1,400 nm is suitably a solid-state laser or a semiconductor laser that emits infrared rays. The infrared laser preferably has a power of 100 Petition 870190108854, of 10/25/2019, p. 82/118 73/101 mW or more, it is preferably applied over an exposure time per pixel of 20 microseconds or less and is preferably applied in an amount of irradiated energy, from 10 mJ / cm 2 to 300 mJ / cm 2 . A multi-beam laser device is preferably used to reduce the exposure time. The exposure mechanism can be any of an inner surface drum system, an outer surface drum system or a flat head system, for example. [0263] Exposure to the image can be carried out using a plate setter (plate printer) or similar according to a common method. In the case of developing on the press, exposure to the image can be performed on a printer after the precursor of the lithographic printing plate is mounted on a printer. <Development stage in the press> [0264] The method of preparing a lithographic printing plate according to the disclosure preferably includes a stage of developing at least one printing ink or moistening water in the printing press and removing the unexposed portion. [0265] The method of preparing a lithographic printing plate according to the disclosure can be carried out according to a method in which the development is done by a developer (developer treatment method). [0266] Later here, a method of developing on the press will be described. -Development method in the press [0267] A method of development in the press preferably allows a precursor of lithographic printing plate that has been exposed to the image to be used in this way to prepare a lithographic printing plate by feeding oil-based ink and an aqueous component on a printer and removing the layer that forms an image in an area that is not Petition 870190108854, of 10/25/2019, p. 83/118 74/101 image. [0268] This means that, a lithographic printing plate precursor is exposed to the image and then mounted on a printer as it is without any developing treatment carried out or a lithographic printing plate precursor is mounted on a printer and then exposed to image on the printer and thereafter an oil-based ink and an aqueous component are fed for printing, in which an uncured image-forming layer is dissolved or dispersed in either or both the oil-based ink and the component water-fed, in an area that is not imaging and thus removed, in the initial stage during printing and a hydrophilic surface is exposed over the area. In this regard, an image-forming layer cured by exposure forms an area that receives oil-based paint that has a lipophilic surface in an exposed portion. Although the oil-based paint or the aqueous component can be fed first onto the surface of a plate, the oil-based paint is preferably fed first from the point of view of preventing contamination caused by any component of the layer that forms the image of the which the aqueous component is removed. Thus, the precursor of the lithographic printing plate is submitted to the development in the press in a printer and is used as it is in the printing of several sheets. The oil-based ink and aqueous component properly used are printing ink and general wetting water for lithographic printing, respectively. [0269] The wavelength of a light source for use as a laser for exposing the lithographic printing plate precursor to the image according to the disclosure, including the polymerization initiator and the polymerizable compound, is preferably from 300 nm to 450 nm or 750 nm to 1,400 nm. In the case of a light source from 300 nm to 450 nm, a precursor to a lithographic printing plate containing a sensitization dye that has a Petition 870190108854, of 10/25/2019, p. 84/118 75/101 maximum absorption in the wavelength region, in an image recording layer, is preferably used and the light source above is preferably used for a light source from 750 to 1,400 nm. The light source from 300 nm to 450 nm is suitably a semiconductor laser. [0270] The developer of a bath having a pH of 2 to 11, which can be used, is a known developer and examples include a developer having a pH of 2 to 11, which contains at least one of a surfactant or a water-soluble polymeric compound. Conventional developing treatment with a strongly alkaline developer has been necessary to include removing a protective layer in a prewash step with water, thereafter alkaline developing, removing the alkaline reagent by washing with water in a post-wash step washing with water, a treatment with liquid gum and drying in a withdrawal stage. The developer containing a surfactant or a water-soluble polymeric compound can be used to carry out both the development and treatment with liquid gum at the same time. Consequently, no post-wash step with water is particularly necessary and the development and treatment with liquid gum can be carried out with a liquid and, after that, a drying step can be carried out. In addition, no prewashing steps with water are also particularly necessary because the removal of a protective layer can also be carried out at the same time as the development and treatment with liquid gum. Drying is preferably carried out after such developing treatment and then removing excess developer by using a compression roller or the like. <Printing step> [0271] The method of lithographic printing according to the disclosure includes a printing step of printing ink supply to the lithographic printing plate submitted to the development on the press in the development stage on the press, Petition 870190108854, of 10/25/2019, p. 85/118 76/101 thus printing on a recording medium. [0272] The printing ink is not particularly limited and any of several known inks can be used when appropriate. Examples of printing ink preferably include oil-based ink or UV curable ink (UV ink) and most preferably include UV ink. [0273] The wetting water can be fed, if necessary, during the printing step. [0274] The printing step can be carried out successively to the development stage on the press without stopping the printer. [0275] The recording medium is not particularly limited and a known recording medium can be used when appropriate. [0276] The method of preparing a lithographic printing plate from the precursor of lithographic printing plate according to the disclosure and the method of lithographic printing according to the disclosure may include, if necessary, heating the entire surface of the precursor of lithographic printing plate before exposure, at exposure or between exposure and development. Such heating can allow an image formation reaction to be promoted in the image forming layer, resulting in the advantages of improvements in the sensitivity and durability of printing and in the stabilization of sensitization, for example. Heating prior to development is preferably carried out in a mild condition of 150 ° C or less. The appearance may allow, for example, the prevention of the problem of curing an area that is not an image. Heating after development is preferably carried out in an extremely strong condition in a range of preferably 100 ° C to 500 ° C. Such a strip may allow sufficient image reinforcement action to be obtained, resulting in the suppression of problems of deterioration of the support and thermal decomposition of the image area. Petition 870190108854, of 10/25/2019, p. 86/118 77/101 Examples [0277] Later here, the present modality will be described in detail with reference to the examples, but the modality is not limited to them. The molecular weight of any polymeric compound means an average weight molecular weight (Mw) as a polystyrene conversion value according to a gel permeation chromatography (GPC) method and the rate of its repeat unit means a molar percentage, unless specifically specified. In addition, “part (s)” and “%” indicate “part (s) by mass” and “% by mass”, respectively, unless otherwise specified. [0278] An example of synthesis of a compound represented by Formula 1 is described below. Another compound represented by Formula 1 can also be synthesized in the same way with the raw materials and a reaction intermediate being appropriately exchanged. [0279] Each of a compound represented by Formula 1, a parent nuclear structure A-1 and similar and an indicator anion B-1 and similar, used in the Examples, has the same structure as described previously. (Examples 1 to 33 and Comparative Examples 1 to 13) Preparation of precursor of lithographic printing plate A <Support Preparation> [0280] After the surface of an aluminum plate (material JIS A 1050) that has a thickness of 0.3 mm has been subjected to a degreasing treatment with a 10% mass aqueous sodium aluminate solution at 50 ° C for 30 seconds, to remove oil from the roller on the surface, the surface of an aluminum plate was granulated using three brushes with nylon bristle bundles that have a bristle diameter of 0.3 mm and a suspension of pamis-water which has an average size of 25 pm (specific gravity 1.1 g / cm 3 ) and well washed with water. The aluminum plate was immersed in an aqueous solution of sodium hydroxide at Petition 870190108854, of 10/25/2019, p. 87/118 78/101 25% by mass at 45 ° C for 9 seconds and so carved, washed with water, thereafter additionally immersed in an aqueous solution of 20% by weight nitric acid at 60 ° C for 20 seconds and washed with water. The etching amount of the granulated surface was approximately 3 g / m 2 . [0281] Next, an electrochemical treatment of surface crunch was performed continuously using an AC voltage of 60 Hz. An electrolyte was a 1% by weight aqueous solution of nitric acid (containing 0.5% by weight of an aluminum ion) and its temperature was 50 ° C. The AC power supply used was a used was a AC with a trapezoidal rectangular waveform that has a TP time until the current value reaches a peak starting from zero, 0.8 ms and that has a duty cycle of 1: 1 and the electrochemical treatment of surface crimping was carried out with a carbon electrode as a counter electrode. Aferrite was used as an auxiliary anode. The current density was 30 A / dm 2 as the maximum current value and 5% of the current was allowed to flow separately from the power source into an auxiliary anode. The electrical amount in electrolysis with nitric acid was an electrical amount of 175 C / dm 2 at the time of anodizing the aluminum plate. After that, the resultant was washed with water spray. [0282] Subsequently, the electrochemical treatment of surface crimping was carried out according to the same method as that for electrolysis with nitric acid under conditions of a 0.5% by weight aqueous hydrochloric acid solution (containing 0.5% in mass of an aluminum ion) at a temperature of 50 ° C, as an electrolyte and an electrical amount of 50 C / dm 2 at the time of anodizing the aluminum plate and after that the resultant was washed with water spray. [0283] Next, 2.5 g / m 2 of an anodized film with DC were formed on the aluminum plate with a 15% aqueous solution of sulfuric acid in Petition 870190108854, of 10/25/2019, p. 88/118 79/101 mass (containing 0.5 mass% of an aluminum ion) as an electrolyte at a current density of 15A / dm 2 and thereafter washed with water and dried, thus producing a support A. The average size of the pore (average pore size on the surface) on the surface layer of the anodized film was 10 nm. [0284] The pore size on the surface layer of the anodized film was measured according to a method that includes surface absorption at an increase of 150,000 at a relatively low acceleration voltage of 12 V with an ultra high resolution SEM (Hitachi S-900) without any vapor deposition treatment to check conductivity and randomly extract 50 pores and determine the average value. The standard deviation error was within ± 10%. [0285] Thereafter, support A was subjected to a silicate treatment with 2.5% by weight aqueous sodium silicate No. 3 solution at 60 ° C for 10 seconds to ensure the hydrophilicity of an area that does not is imaged and after that washed with water, thus producing a support B. The amount of bound Si was 10 mg / m 2 . The average roughness in the center line (Ra) of support B was measured with a needle that had a diameter of 2 pm and was 0.51 pm. [0286] A support C was prepared according to the production method as in support A except that the electrolyte in the formation of the anodized film with DC was exchanged for an aqueous solution of 22% by weight phosphoric acid in the preparation of the support A. The average pore size (average pore size on the surface) on the surface layer of the anodized film was measured according to the same method and was 25 nm. [0287] Thereafter, support C was subjected to a silicate treatment with 2.5% by weight aqueous sodium silicate solution No. 3 at 60 ° C for 10 seconds to ensure the hydrophilicity of an area that did not is imaging, thus producing a support D. The amount of bound Si was 10 mg / m 2 . The average roughness in the center line (Ra) of support D was measured with a needle that Petition 870190108854, of 10/25/2019, p. 89/118 80/101 had a diameter of 2 pm and was 0.52 pm. <Base Coating Layer Formation> [0288] Each support represented in Table 1 to Table 3 below was coated with a coating solution (1) for a base coating layer, which has the following composition, so that the amount of coating after drying was 23 mg / m 2 , thus forming a base coat layer. <Coating Solution (1) for Base Coating Layer> Polymer (P-1) [the following structure]: 0.18 part Hydroxyethyliminodiacetic acid: 0.10 part Water: 61.4 parts (P-1) ch 3 a / b / c / d / e = 14.2 / 71.8 / 8.9 / 0.1 /5.0(mass%) a / b / c / d / e = 19.0 / 72.8 / 7.7 / 0.1 /0.4 (mol%) Weight average molecular weight = 200,000% by mass mol% Average weight molecular weight The method of synthesizing the polymer P-1 is described below. (Synthesis of Monomer M-1) [0289] 200 g (0.91 mol) of ANCAMINE 1922A (di (aminopropyl) diethylene glycol ether, produced by Air Products and Chemicals, Inc.), 435 g of water were added to a 3 L bottle. distilled and 410 g of methanol and Petition 870190108854, of 10/25/2019, p. 90/118 81/101 cooled to 5 ° C. Next, 222.5 g (1.82 mol) of benzoic acid and 25 mg (0.15 mmol) of 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (4-OH-TEMPO) 280 g (1.82 mmol) of methacrylic acid anhydride were added so that the internal temperature of a reaction liquid was 10 ° C or less. The reaction liquid was stirred at 5 ° C for 6 hours and then stirred at 25 ° C for 12 hours and thereafter 70 g of phosphoric acid was added to adjust the pH to 3.3. The reaction liquid was transferred to a 10 L stainless steel beaker and 3.7 L of ethyl acetate, 1.5 L of methyl tert-butyl ether (MTBE) and 0.65 L of distilled water were added to the even and shaken vigorously and then left to rest. After the top layer (organic layer) was discarded, 1.8 L of ethyl acetate was added, stirred vigorously and thereafter left to stand and the top layer was discarded. In addition, 1.5 L of ethyl acetate was added, stirred vigorously and thereafter left to stand and the top layer was discarded. Then 1.6 L of MTBE was added, shaken vigorously and after that left to stand and the top layer was discarded. To the resulting aqueous solution, 62.5 mg (0.36 mmol) of 4-OH-TEMPO were added, thus providing 1.2 kg of an aqueous solution of the monomer M-1 (20.1% by mass, converted to the content of solids). (Purification of M-2 Monomer) [0290] To a separating funnel, 420 g of LIGHT-ESTER P-1M (2-methacryloyloxyethyl phosphate, produced by Kyoeisha Chemical Co., Ltd.), 1,050 g of dibutyl ether of diethylene glycol and 1,050 g of distilled water and were shaken vigorously and then left to stand. After the top layer was discarded, 1050 g of diethylene glycol dibutyl ether was added and the resultant was stirred vigorously and then left to stand. The top layer was discarded, thus providing 1.3 kg of an aqueous solution of the monomer M-2 (10.5% by mass, converted to the solids content). Petition 870190108854, of 10/25/2019, p. 91/118 82/101 (Synthesis of Polymer P-1) [0291] To a 3 L 3-neck flask was added 600.6 g of distilled water, 33.1 g of an aqueous solution of the monomer M-1 and 46.1 g of the monomer M-3 below and heated to 55 ° C in a nitrogen atmosphere. Then, a dripping liquid A depicted below was dripped for 2 hours and stirred for 30 minutes, after which 3.9 g of VA-046B (produced by FUJIFILM Wako Pure Chemical Corporation) was added to it and the resultant was heated to 80 ° C and stirred for 1.5 hours. The reaction liquid was cooled to room temperature (25 ° C, the same later here) and after that 175 g of a 30% by weight aqueous solution of sodium hydroxide were added to thereby adjust the pH to 8.3. Then, 152.2 mg of 4-OH-TEMPO was added and the resultant was heated to 53 ° C. 66.0 g of methacrylic acid anhydride were added and stirred at 53 ° C for 3 hours. After the resultant was cooled to room temperature, the reaction liquid was transferred to a 10 L stainless steel beaker, 1,800 g of MTBE was added to it and stirred vigorously and thereafter left to stand and the upper layer was discarded. After the same 1,800 g washing operation with MTBE was additionally repeated twice, 1,700 g of distilled water and 212 mg of 4-OH-TEMPO were added to the resulting aqueous layer, thus providing 4.1 kg of a P- polymer. 1 (11.0%, converted to solids content) in the form of a uniform solution. The average molecular weight (Mw) as a polyethylene glycol conversion value by a gel permeation chromatography (GPC) method was 200000. -Drip Liquid AS Aqueous solution of the M-1 monomer above: 132.4 g Aqueous solution of the above M-2 monomer: 376.9 g Monomer M-3 [the following structure]: 184.3 g Petition 870190108854, of 10/25/2019, p. 92/118 83/101 Blemmer PME4000 (produced by NOF CORPORATION): 15.3 g [0292] VA-046B (produced by FUJIFILM Wako Pure Chemical Corporation): 3.9 g Distilled water: 717.4 g [0293] Blemmer PME 4000: polyethylene glycol methoxy methacrylate (oxyethylene unit repeat number: 90) [0294] VA-046B: 2,2'-azobis [2- (2-imidazolin-2-yl) propane] disulfate dihydrate Monomer M-3 Monomer M-3 <Formation of the Image Recording Layer » [0295] The base coat layer was bar coated with a coating solution (1) for an image recording layer, which has the following composition and dried in an oven at 120 ° C for 40 seconds, thus forming an image recording layer in an amount of coating after drying 1.0 g / m 2 . [0296] The coating solution (1) for an image recording layer was prepared immediately before coating, by mixing and stirring the sensitizer (1) below and a microgel liquid. -Sensitizer (1) Binding polymer (1) [the following structure]: 0.125 part Electron receptor polymerization initiator [the following structure]: 0.132 part Petition 870190108854, of 10/25/2019, p. 93/118 84/101 Compound represented by Formula 1 or comparative compound (infrared absorber) described in Table 1 and Table 3: 0.033 part Electron donor polymerization initiator [the following structure]: 0.057 part Acid stain former [the following structure]: 0.058 part Polymerizable compound U-15HA (urethane acrylate, produced by Shin-Nakamura Chemical Co., Ltd.): 0.146 part ATM-4E (ethoxylated pentaerythritol tetraacrylate, produced by Shin-Nakamura Chemical Co., Ltd.): 0.078 part Polymeric hydrophilic compound Hydroxypropylcellulose (HPC-SSL, produced by Nippon Soda Co., Ltd.): 0.030 part Low molecular weight hydrophilic compound (tris (2-hydroxyethyl) isocyanurate): 0.020 part Fluorine-based surfactant (1) [the following structure]: 0.008 part 2-Butanone: 1,091 pieces 1-Methoxy-2-propanol: 8.609 parts -Microgel LiquidMicrogel (1): 1.64 part Distilled water: 2,425 pieces [0297] The structures of the binder polymer (1), the electron receptor polymerization initiator, the electron donor polymerization initiator and the fluorine-based surfactant (1) used in the sensitizer structure (1) are shown below. Petition 870190108854, of 10/25/2019, p. 94/118 85/101 Binder polymer (1) Binding polymer (1) [0298] Electron Donation Polymerization Initiators 1-1 to I-4 (the following compounds) (1-1) (I-2) (I-3) (I-4) Petition 870190108854, of 10/25/2019, p. 95/118 86/101 [0299] Electron Donation Polymerization Initiators D-1 to D-4 (the following compounds) (D-1) HOMO = -5.92 eV (D-2) HOMO = -5.77 eV HOMO = -5.96 eV (D-4) HOMO = -5.91 eV [0300] Acid Generators CL-1 to CL-4 (the following compounds) Petition 870190108854, of 10/25/2019, p. 96/118 87/101 -ch 2 ch— -ch 2 ch- I ho COOC2H4C5F13 Ο OC 3 H 6 -H-OC2H 4 4 — OH '22 q 1 Fluorine-based surfactant (1) (Mw = 13,000) Fluorine-based surfactant (1) (Mw = 13,000) [0301] Comparative Coloring Agents Compounds A-1 to A-7 (the following compounds) Petition 870190108854, of 10/25/2019, p. 97/118 88/101 HOMO = -5.27 eV HOMO = -5.45 eV HOMO = -5.18 eV HOMO = -5.37 eV HOMO = -5.42 eV [0302] The method of adjusting the binder polymer (1) is shown below. [0303] 78 g of 1-methoxy-2-propanol were added to a 1 L three-necked flask and the temperature was adjusted to 70 ° C in a stream of nitrogen. The dripping liquid 1 below was dripped in it for 2.5 hours and heated to 80 ° C and stirred for 2 hours after the dripping was finished. The addition liquid 1 below was additionally added and heated to 90 ° C and Petition 870190108854, of 10/25/2019, p. 98/118 89/101 stirred for 2.5 hours. -Drip Liquid 1 Methyl methacrylate: 21.8 g Blemmer PME 100: 52.1 g Methacrylic acid: 14.2 g Dipentaerythritol hexakis (3-mercaptopropionate): 2.15 g V-601 (produced by FUJIFILM Wako Pure Chemical Corporation): 0.38 g 1-Methoxy-2-propanol: 50.2 g -Addition Liquid 1V-601 (dimethyl 2,2'-azobis (2-methylpropionate), produced by FUJIFILM Wako Pure Chemical Corporation): 0.038 g 1-Methoxy-2-propanol: 4.0 g [0304] The reaction liquid was cooled to 25 ° C, 136.6 g of 1-methoxy-2-propanol, 0.238 g of 4-OH-TEMPO, 25.88 g of glycidyl methacrylate and 2.957 g of bromide of trimethylbenzylammonium was added thereto and the resultant was stirred at 90 ° C for 18 hours. The resulting solution was cooled to room temperature and diluted with 1-methoxy-2-propanol to have a solids content concentration of 23%, thus providing a binder polymer (1). The average molecular weight (Mw) as a polystyrene conversion value according to a gel permeation chromatography (GPC) method was 40,000. [0305] The microgel preparation method (1) used in the microgel liquid was shown below. <Preparation of the Polyvalent Isocyanate Compound (1)> [0306] To a suspended solution of 17.78 g (80 mmoles) of isophorone diisocyanate and 7.35 g (20 mmoles) of the polyhydric phenol compound (1) below in ethyl acetate (25.31 g) were 43 mg of bismuth tris (2-ethylhexanoate) added Petition 870190108854, of 10/25/2019, p. 99/118 90/101 (NEOSTANN U-600, produced by Nitto Kasei Co., Ltd.) and the resultant was stirred. The reaction temperature was adjusted to 50 ° C in the heat generation convergence time and the stirring was carried out for 3 hours, thus providing a solution of a polyvalent isocyanate compound (1) in ethyl acetate (50% by mass) . <Preparation of Microgel (1)> [0307] The oil phase component and the aqueous phase component below were mixed and emulsified with a homogenizer at 12,000 rpm for 10 minutes. After the resulting emulsified product was stirred at 45 ° C for 4 hours, 5.20 g of an aqueous solution of 1,8-diazabicyclo [5.4.0] undeca-7-eno-octylate (U-CAT SA102, produced by San-Apro Ltd.) 10% by mass were added and the resultant was stirred at room temperature for 30 minutes and left to stand at 45 ° C for 24 hours. The concentration of the solids content was adjusted with distilled water to be 20% by mass, thus providing an aqueous microgel dispersion liquid (1). The average particle size was measured according to a light scattering method and was 0.28 pm. -Oily Phase Component (Component 1) ethyl acetate: 12.0 g [0308] (Component 2) adduct (50% by weight ethyl acetate solution, produced by Mitsui Chemicals, Inc.) obtained by adding trimethylolpropane (6 moles) and xylene diisocyanate (18 moles) and adding terminal polyoxyethylene methylene (1 mol, oxyethylene unit repeat number: 90) at the same: 3.76 g [0309] (Component 3) polyvalent isocyanate compound (1) (in the form of a 50% by weight ethyl acetate solution): 15.0 g [0310] (Component 4) 65% by weight dipentaerythritol pentaacrylate solution (SR-399, produced by Sartomer) in ethyl acetate: 11.54 g [0311] (Component 5) 10% sulfonate-type surfactant solution (Pionin A-41-C, produced by TAKEMOTO OIL & FAT Co., Ltd.) in ethyl acetate: 4.42 g Petition 870190108854, of 10/25/2019, p. 100/118 91/101 -Aqueous Phase ComponentWater distilled: 46.87 g <Formation of the Protective Layer> [0312] The image recording layer was coated with a bar with a coating solution for a protective layer, which has the following composition and dried in an oven at 120 ° C for 60 seconds, thus forming a protective layer in an amount of coating after drying 0.15 g / m 2 , thereby preparing each lithographic printing plate precursor for Examples 1 to 8 and Comparative Examples 1 to 4. The support used in the preparation of each printing plate precursor lithographic and the compound represented by Formula 1 or the comparative compound in the coating solution (1) for an image recording layer are described collectively in Table 1. -Coating Solution for Protective Layer [0313] Compound dispersion liquid with inorganic layer (1) [described below]: 1.5 part [0314] 6% by weight aqueous polyvinyl alcohol solution (CKS50, produced by Synthetic Chemical Industry Co., Ltd., modified with sulfonic acid, a saponification degree of 99% per mol or more, a degree of polymerization of 300 ): 0.55 piece [0315] 6% by weight aqueous polyvinyl alcohol solution (PVA-405, produced by Kuraray Co., Ltd., a saponification degree of 81.5% per mol, a degree of polymerization of 500): 0.03 part [0316] 1% by weight aqueous surfactant solution (polyoxyethylene lauryl ether, EMALEX 710, produced by Nihon Emulsion Co., Ltd.): 0.86 part Ion exchange water: 6.0 parts [0317] The method of preparing the dispersion liquid for the Petition 870190108854, of 10/25/2019, p. 101/118 92/101 inorganic layer (1) used in the coating solution for a protective layer is shown below. <Preparation of Inorganic Layer Compound Dispersion Liquid (1)> [0318] To 193.6 parts of ion exchange water were added 6.4 parts of synthetic mica (SOMASIF ME-100, produced by Co-op Chemical Co., Ltd.) and dispersed with a homogenizer until the average size particle (laser diffraction method) was 3 pm. The aspect ratio of the resulting dispersed particle was 100 or more. 2. Preparation of the Lithographic Printing Plate Precursor B [0319] Each lithographic printing plate precursor B for Examples 9 to 33 and Comparative Examples 5 to 14 was prepared in the same way as in Preparation of lithographic printing plate precursor A except that no coating was carried out. of any protective layer in Preparation of precursor of lithographic printing plate A. [0320] The support used in the preparation of each lithographic printing plate precursor and the compound represented by Formula 1 or the comparative compound in the coating solution (1) for an image recording layer are described collectively in Table 2 and Table 3. 3. Evaluation of the Lithographic Printing Plate Precursor [0321] Each precursor to the lithographic printing plate described above was evaluated for color-forming ability, developing ability on the press, printing durability and aging stability, as follows. The results of the evaluation are shown in Table 1 to Table 3. (l) Color Formation Capacity [0322] The precursor to the lithographic printing plate was exposed under conditions of 11.5 W power, a surface drum rotation speed Petition 870190108854, of 10/25/2019, p. 102/118 93/101 external 220 rpm and a resolution of 2,400 dpi (dot per inch, 1 inch = 25.4 mm) with Trendsetter 3244VX (produced by Creo Co., Ltd.) equipped with a 40W infrared semiconductor laser with system cooling with water. The exposure was carried out in an environment of 25 ° C and 50% relative humidity. [0323] The color development of the lithographic printing plate precursor was measured immediately after exposure and after storage in a dark place (25 ° C) for 2 hours after exposure. The measurement was performed on a SCE (Specular Component Exclude) system with Spectro Colorimeter CM 2600d and CM-S100W operating software produced by KONICA MINOLTA JAPAN, INC. The color-forming ability was assessed using the L * (brightness) value of the L'a'b * color coordinate system according to the AL difference between the L * value of an exposed portion and the L value * of an unexposed portion. A higher AL value means excellent color-forming ability. (2) Developing Capacity in the Press [0324] The precursor of lithographic printing plate was exposed by Luxei PLATESETTER T-6000III produced by FUJIFILM Corporation, equipped with an infrared semiconductor laser, under conditions of an external surface drum rotation speed of 750 rpm, a laser power 70% and a resolution of 2,400 dpi. The exposed image included a solid image and halftone dot at 50% of the 20-pm-dot FM screen. [0325] The exposed lithographic printing plate precursor was mounted on a plate cylinder of a LITHRONE 26 printer produced by Komori Corporation, without any developing treatment, Ecolity-2 wetting water (produced by FUJIFILM Corporation) / water from tap = 2/98 (volume ratio) and solid ink Values-G (N) (produced by DIC Graphics Corporation) were used, the wetting water and ink were fed according to a standard automatic printing method of LITHRONE 26 and the impression was Petition 870190108854, of 10/25/2019, p. 103/118 94/101 made on Tokubishi Art paper (76.5 kg) (produced by Mitsubishi Paper Mills Limited) for 100 sheets at a print speed of 10,000 sheets per hour. [0326] The number of sheets required to complete the development on the press of the unexposed portion of the image recording layer on the printer and no transfer of any ink to the non-image area has been determined and evaluated as the developing capacity on the press. A smaller number of sheets means developing capacity in the most favorable press. (3) Print Durability for Oil Based Ink [0327] After the developing capacity on the press has been evaluated, printing has been continued further. The density of the ink on a print has been reduced because of the gradual wear of the image recording layer according to an increase in the number of printed sheets. The number of sheets printed up to the halftone dot area rate of a 50% halftone dot of an FM screen on the print, which is measured with a Gretag densitometer (produced by the GretagMacbeth Company), has been reduced by 5 % as compared to that rate measured at 100 that the printed sheet was determined. Print durability was assessed with the relative print durability in which a number of printed sheets, 50000, was set to 100. A higher numeric value means more favorable print durability. [0328] Relative print durability = (Number of sheets printed with the target lithographic printing plate precursor) / 50,000 χ 100 (4) Print Durability for UV Curable Ink (UV ink) [0329] The precursor of lithographic printing plate was exposed by Luxei PLATESETTER T-6000III produced by FUJIFILM Corporation, equipped with an infrared semiconductor laser, under conditions of an external surface drum rotation speed of 750 rpm, a laser power 70% and a resolution of 2,400 dpi. The exposed image included a solid image and Petition 870190108854, of 10/25/2019, p. 104/118 95/101 halftone at 50% of the 20-pm-dot FM screen. [0330] The resulting exposed plate precursor was mounted on a cylinder of an SX-74 printer produced by Heidelberger Druckmaschinen AG, which has a Kikuban size of (636 mm x 939 mm), without any developing treatment. A moistening water circulation tank with a volume of 100 L was connected to the printer, inside which a non-woven filter and temperature control equipment were built. Standard equipment was loaded with 80 L of wetting water including 2.0% wetting water S-Z1 (produced by FUJIFILM Corporation), T&K UV OFS K-HS solid ink GE-M (produced by T&K TOKA Corporation) used as the printing ink and the wetting water and ink were fed according to a standard automatic printing start method and after that printing was performed on Tokubishi Art paper (76.5 kg) at a printing speed of 10,000 sheets per hour. [0331] The density of the ink on a print has been reduced because of the gradual wear of the image recording layer as the number of printed sheets has increased. The number of sheets printed up to the halftone dot area rate of a halftone dot at 50% of an FM screen on the print, which is measured with a Gretag densitometer, has been reduced by 5% when compared to such a measured rate in the printed sheet 100 that has been determined. Print durability was assessed with the relative print durability in which a number of printed sheets, 50000, was set to 100. A higher numeric value means more favorable print durability. [0332] Relative print durability = (Number of sheets printed with the target lithographic printing plate precursor) / 50,000 χ 100 (5) Aging Stability [0333] The coating solution (1) for a recording layer of Petition 870190108854, of 10/25/2019, p. 105/118 96/101 image, used for the preparation of lithographic printing plate precursors A and B, was heated to 60 ° C for one day and the remaining rate of the compound represented by Formula 1 or the comparative compound was measured by high performance liquid chromatography performance (HPLC). The coating solution heated to 60 ° C for one day was used to prepare a lithographic printing plate precursor and stability on aging was evaluated. [0334] In the following tables, ΔΕ represents the difference between the HOMO orbital energy level of any compound represented by Formula 1 or the comparative compound used and the HOMO orbital energy level of any electron donating polymerization initiator. Petition 870190108854, of 10/25/2019, p. 106/118 (Table 1 Support Compound represented by Formula 1 and Comparative compound Initiator ofreceiver polymerizationelectrons Initiator ofdonor polymerizationelectrons Formed r ofacid coloring ΔΕ (ev) Print durability AL Developability in the press (sheets) Stability in aging Tipe ofmother nuclear structure Indicator (Za) Oil-based paint InkUV Remaining rate (%) AL Example 1 B TO 1 B-2 1-1 D-1 CL-1 0.55 95 82 5.6 12 97 4.3 Example 2 B TO 1 B-5 1-1 D-1 CL-1 0.55 94 83 5.5 12 98 4.3 Example 3 B TO 1 B-7 1-1 D-1 CL-1 0.55 94 83 5.6 12 97 4.4 Example 4 B TO 1 B-8 1-1 D-1 CL-1 0.55 95 83 5.5 12 96 4.3 Example 5 B A-2 B-7 1-1 D-1 CL-1 0.57 96 83 5.6 12 96 4.4 Example 6 B A-15 B-7 1-1 D-1 CL-1 0.59 92 81 5.6 12 98 4.3 Example 7 B A-29 B-7 1-1 D-1 CL-1 0.47 96 84 5.6 12 95 4.2 Example 8 D TO 1 B-2 1-1 D-1 CL-1 0.55 103 88 5.6 12 97 4.3 ExampleComparative1 B TO 1 B-7 1-1 D-1 CL-1 0.65 88 62 4.9 12 99 3.7 Comparative Example 2 B A-2 B-7 1-1 D-1 CL-1 0.74 72 48 4.3 12 99 3.3 ExampleComparative3 B A-3 - 1-1 D-1 CL-1 0.47 89 76 5.0 60 87 3.9 ExampleComparative4 B A-4 B-5 1-1 D-1 CL-1 0.49 88 79 5.0 15 90 1.5 97/101 Petition 870190108854, of 10/25/2019, p. 107/118 (Table 2) Support Compound represented by Formula 1 and Comparative compound Initiator polymerizes electron receptor of tionin Polymerization initiator Acid stain former ΔΕ (ev) Print durability AL Developability in the press (sheets) Aging stability Mother nuclear structure type Indicating anion (Za) electron donor in Oil-based paint UV ink Remaining rate(%) AL Example 9 B TO 1 B-2 1-1 D-1 CL-1 0.55 95 75 5.6 15 97 4.4 Example 10 B TO 1 B-3 1-1 D-1 CL-1 0.55 94 76 5.7 15 97 4.5 Example 11 B TO 1 B-7 1-1 D-1 CL-1 0.55 95 78 5.6 15 97 4.4 Example 12 B A-2 B-7 1-1 D-1 CL-1 0.57 94 77 5.6 15 96 4.5 Example 13 B A-2 B-8 1-1 D-1 CL-1 0.57 95 77 5.6 15 97 4.6 Example 14 B A-13 B-8 1-1 D-1 CL-1 0.47 91 72 5.3 15 91 4.0 Example 15 B A-15 B-5 1-1 D-1 CL-1 0.59 93 74 5.4 15 99 4.3 Example 16 B A-29 B-8 1-1 D-1 CL-1 0.47 97 80 5.9 15 94 4.6 Example 17 B A-29 B-7 1-1 D-2 CL-1 0.51 91 71 5.2 15 94 4.2 Example 18 B A-29 B-2 1-1 D-1 CL-2 0.47 95 77 5.2 15 95 4.7 Example 19 B A-29 B-2 1-1 D-1 CL-3 0.47 94 76 5.2 15 95 4.6 Example 20 B A-29 B-2 1-1 D-1 CL-4 0.47 95 77 5.3 15 95 4.5 Example 21 B A-2 B-8 I-2 D-1 CL-1 0.57 96 79 5.5 15 97 4.6 Example 22 B A-2 B-8 I-3 D-1 CL-1 0.57 95 77 5.5 15 97 4.6 Example 23 B A-2 B-8 I-4 D-1 CL-1 0.57 94 76 5.4 15 97 4.7 Example 24 B A-2 B-8 1-1 D-3 CL-1 0.42 98 80 5.1 15 97 4.3 Example 25 B A-29 B-8 1-1 D-4 CL-1 0.46 92 72 5.1 15 93 4.2 Example 26 D A-2 B-8 1-1 D-1 CL-1 0.57 105 88 5.7 15 97 4.5 Comparative Example 5 B TO 1 B-7 1-1 D-1 CL-1 0.65 88 52 4.7 15 99 3.7 Comparative Example 6 B A-2 B-7 1-1 D-1 CL-1 0.74 68 37 4.3 15 99 3.2 Example B A-3 - 1-1 D-1 CL-1 0.47 85 67 4.8 80 86 3.7 98/101 Petition 870190108854, of 10/25/2019, p. 108/118 Comparative7Comparative Example 8 B A-4 B-5 1-1 D-1 CL-1 0.49 88 69 4.9 18 87 1.8 Comparative Example 9 B A-5 B-5 1-1 D-1 CL-1 0.49 87 68 4,, 8 18 85 1.7 Comparative Example 10 B A-6 B-5 1-1 D-1 CL-1 0.55 85 60 4.5 18 72 0.9 Comparative Example 11 B A-7 B-5 1-1 D-1 CL-1 0.50 87 67 4.8 18 87 1.8 Comparative Example 12 B A-2 B-8 1-1 D-1 - 0.57 88 69 2.0 15 97 1.4 Comparative Example 13 D TO 1 B-7 1-1 D-1 CL-1 0.65 95 61 4.9 15 99 3.8 99/101 Petition 870190108854, of 10/25/2019, p. 109/118 (Table 3) Support Compound represented by Formula 1 andComparative compound Polymerization initiator Electron donor polymerization initiator from in Acid stain former Print durability AL Developability in the press (sheets) Aging stability at the Mother nuclear structure type Indicating anion (Za) 1 electron tajepiui uu Oil-based paint UV ink Remaining rate(%) AL Example27 B A-5 B-7 1-1 D-1 CL-1 95 74 5.6 15 97 4.5 Example28 B A-11 B-7 1-1 D-1 CL-1 96 76 5.7 15 95 4.6 Example29 B A-28 B-7 1-1 D-1 CL-1 94 77 5.6 15 95 4.6 Example30 B A-32 B-7 1-1 D-1 CL-1 92 77 5.8 15 97 4.8 Example31 B A-37 B-7 1-1 D-1 CL-1 92 74 5.4 15 96 4.7 Example32 B A-38 B-7 1-1 D-1 CL-1 93 75 5.4 15 98 4.6 Example33 B A-42 B-7 1-1 D-1 CL-1 93 76 5.3 15 95 4.6 100/101 Petition 870190108854, of 10/25/2019, p. 110/118 101/101 [0335] The precursor of the lithographic printing plate according to the disclosure, of each of Examples 1 to 33, is favorable in all of the printing durability, the capacity of color formation, the capacity of developing in the press and the stability in aging, with reference to the results described in Table 1 to Table 3. In this respect, it was found that the lithographic printing plate precursor of each Comparative Example is inferior in at least any of the printing durability or the ability to form color. [0336] The disclosure of Japanese Patent Application No. 2017-137249 filed on July 13, 2017 is hereby incorporated by reference in its entirety. [0337] All documents, patent applications and technical standards described here are incorporated by reference here, as if each document, patent application and individual technical standard were specifically and individually indicated as being incorporated by reference.
权利要求:
Claims (12) [1] 1. Precursor of lithographic printing plate, CHARACTERIZED by the fact that it comprises an image recording layer on a hydrophilic support, in which the image recording layer comprises a polymerization initiator, an infrared absorber, a polymerizable compound and a acid-colored former, the infrared absorber comprises a compound represented by the Formula 1 below, and the difference between the HOMO of the compound represented by Formula 1 and the HOMO of at least one polymerization initiator compound is 0.60 eV or less, [2] 2/4 hydrocarbon, a heteroaryl group or a group in which a bond with Xi is cleaved by exposure to heat or infrared, Za represents a counter neutralizing charge and at least one of An or Ar2 has a group represented by Formula 2 a follow: -X Formula 2 where X represents a halogen atom, -C (= O) -X2-Rn, -C (= O) -NRi2Ri3, -OC (= O) -Ru, -CN, -SO2NR15R16 or a group perfluoroalkyl, X2 represents a single bond or an oxygen atom, Rn and Ru each independently represents an alkyl group or an aryl group and R12, R13, R15 and R16 each independently represents a hydrogen atom, an alkyl group or a group aryl. 2. Precursor of lithographic printing plate, according to claim 1, CHARACTERIZED by the fact that X in Formula 2 represents a fluorine atom, a chlorine atom, or -C (= O) ORi7, as long as R17 represents an alkyl group or an aryl group. [3] 3. Precursor of lithographic printing plate, according to the claim 2, CHARACTERIZED by the fact that A1 in Formula 1 represents -NR18R19 or -S-R20, provided that Ris and R19 each independently represent an aryl group and R20 represents a hydrocarbon group or a heteroaryl group. [4] 4. A lithographic printing plate precursor according to any one of claims 1 to 3, CHARACTERIZED by the fact that the polymerization initiator is a borate compound. [5] 5. Precursor of lithographic printing plate, according to claim 4, CHARACTERIZED by the fact that the borate compound is a tetraarylborate compound or a monoalkyltriarylborate compound. [6] 6. Precursor of lithographic printing plate, according to any one of claims 1 to 5, CHARACTERIZED by the fact that the primer of Petition 870190138069, of 12/22/2019, p. 7/11 3/4 polymerization comprises an electron donating polymerization initiator and an electron receiving polymerization initiator. [7] 7. Precursor of lithographic printing plate, according to any one of claims 1 to 6, CHARACTERIZED by the fact that the acid coloring former is at least one compound selected from the group consisting of a spiropyran compound, a spirooxazine compound , a spirolactone compound and a spirolactam compound. [8] 8. Precursor of lithographic printing plate, according to any one of claims 1 to 7, CHARACTERIZED by the fact that Za represents an organic anion containing carbon atom. [9] 9. Precursor of lithographic printing plate, according to any one of claims 1 to 8, CHARACTERIZED by the fact that Za represents a sulfonimide anion. [10] 10. Precursor of lithographic printing plate according to any one of claims 1 to 9, CHARACTERIZED by the fact that the polymerizable compound includes a polymerizable compound with addition to the urethane base. [11] 11. Precursor of lithographic printing plate according to any one of claims 1 to 10, CHARACTERIZED by the fact that the polymerizable compound includes a compound selected from the group consisting of an unsaturated carboxylic acid ester compound and an alcohol compound polyhydric, and an unsaturated carboxylic acid amide compound and a polyvalent amine compound. [12] 12. Method of preparing a lithographic printing plate, CHARACTERIZED by the fact that it comprises a step of exposing in images the precursor of lithographic printing plate, as defined in any of claims 1 to 11, thus forming an exposed portion and an unexposed portion, and Petition 870190138069, of 12/22/2019, p. 11/11 4/4 a step of feeding at least one of printing ink or moistening water, thus removing the unexposed portion.
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同族专利:
公开号 | 公开日 CN110505962A|2019-11-26| EP3594009B1|2021-04-21| CN110505962B|2022-01-04| EP3594009A4|2020-05-27| JPWO2019013268A1|2020-01-09| JP6621570B2|2019-12-18| WO2019013268A1|2019-01-17| EP3594009A1|2020-01-15| US20200041899A1|2020-02-06|
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2021-10-19| B350| Update of information on the portal [chapter 15.35 patent gazette]|
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申请号 | 申请日 | 专利标题 JP2017-137249|2017-07-13| JP2017137249|2017-07-13| PCT/JP2018/026239|WO2019013268A1|2017-07-13|2018-07-11|Lithographic printing plate original plate, and method for producing lithographic printing plate| 相关专利
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