• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method of producing planographic printing forms by irradiating a recording material having a base made of anodised aluminium having at least 3 g of oxide per m<2> and of a recording layer containing a light-curable diazo compound and an amine resin, with laser radiation and washing out the unirradiated layer regions.
    公开号:SU963453A3
    申请号:SU782630253
    申请日:1978-06-26
    公开日:1982-09-30
    发明作者:Улиг Фритц
    申请人:Хехст Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to methods for the manufacture of offset forms and can be used in the printing industry. A device containing a printed circuit board with an ultraviolet-sensitive layer (preferably diazo layer) on an aluminum substrate is known, and the printed circuit board is irradiated with a laser l. A known method of making furnace forms using oxidized aluminum as a substrate is applied to the last photosensitive layer, the diazonium salt of polycondensation product 2. A disadvantage of the known methods is the low quality of image recording. The purpose of the invention is to improve the quality of image recording. This goal is achieved by the fact that the photosensitive layer contains a diazonium layer of a product of a polycondensation or para-quinone diazide in a quantity of 25-75 wt.% And an amino resin in an amount of 25-63 wt.%. The method is implemented in the following way. To produce a laser-sensitive recording material, an amino resin is added to the solution, which contains the diazo compound used and serves to coat anodized aluminum. The substrates used according to the invention are made in a known manner. Prior to anodic oxidation of the substrate, the aluminum layer of the substrate is roughened by mechanical, chemical, or electrochemical means. The combination of electrochemical roughing and anodic oxidation has justified itself in a continuous process. Roughing is carried out in a bath of a dilute aqueous solution of a mineral salt, for example hydrochloric or nitric acid, using constant or alternating current. Anodizing is also carried out in a solution of sulfuric or phosphoric acid, preferably using direct current. The current density and anodization time are coordinated in such a way that the thickness of the oxide layer is maintained within the specified limits (3-12 g / m), with the upper limit of the thickness of the layer not being the limit. However, when the thickness of the oxide layer is above 15 g / m, no significant changes occur, and if the layer is above 30 g / m, cracks may form in the layer during bending. After laser irradiation, ultraviolet-sensitive diazolayers appear as aqueous alkalis or acidic solutions, as well as water. Also suitable are varnish emulsions and varnishes, the use of which is known for flat-panel printing. These lacquer emulsions and lacquers can be used in the course of one technological operation for the manifestation and varnishing, or also after it has been applied to aqueous solutions. The invention uses shortwave lasers, such as an argon laser or a krypton laser, which, depending on the type of reflector used, emit in the ultraviolet region with a radiation power of 0.5-2.5 W or in the visible region with a radiation power of 1-25 W. dyestuffs such as rhodamines, triphenylmethane dyes, crystal violet, astrazon orange, eosin and methyl blue, which have a sensitizing effect, can be added to the layers mentioned. The laser beam is controlled by a predetermined programmed stroke and / or raster motion. Method and device for adjusting the laser beam, as well as focusing, modulating and accordingly deflecting the beam. The layers are irradiated preferably with an argon laser using radiation of 1-10 BT.L. with and more. By focusing the laser beam, solidified areas with a diameter of less than 50 microns arise in the layer by the object. The proposed method produces a very resistant oleophromatization of the surface, which ensures good printed circuit boards. In addition, chustvizi-. The intensity of the materials used for recording from 15 laser materials for the laser region is especially high. In the following examples, preferred embodiments are indicated. The percentage data, unless otherwise indicated, is weight percent. 1 g should be taken as the weight part (It), if the volume volume (vt) is chosen one millimeter. . Example 1. A purely laminated aluminum roller is electrolytically roughened in a single pass and oxidized at a constant current of 9 A / dm in a water bath (150 g of sulfuric acid per liter) for 75 seconds while anodically oxidized. An anodic oxide layer with a thickness of 5 g / m is formed. Thereafter, for 30 s at 70 ° C, it is treated with a 0.25% solution of polyvinyl phosphoric acid in water and then dried. Following this, they are sensitized with a solution of 0.4% diazopolycondensate obtained by condensing 1 mol of 3-methoxyphenylamine-4g-diazonium sulfate with 1 mole of 4,4-dimethoxymethyl-diphenyl ether in 85% phosphoric acid at 40 ° C and isolating as methanesulfonate 0.72% highly reactive non-plasticized urea-aldehyde resin, with a dynamic viscosity of 60% aqueous solution in isobutanol of about 2500 cP at 20 ° C and an acid number of less than 2 (resin 1) and 0.4% of rhodamine in jYDN (C.1.45 160) in ethylene glycol monoethyl ether. They are irradiated with an argon laser, which in the ultraviolet region emits mainly at a wavelength of 363 and 351 nm, a radiation power of 0.8 W and a write speed of 100 m / s. Non-irradiated sites are washed with a solution of 0.65% and 3.8% benzyl alcohol in water. The irradiated sites are oleophilic rejected and covered with greasy paint. Over 85,000 good impressions are obtained in the osseo printing machine. Instead of the urea formaldehyde resin mentioned, the same amounts of the following unplasticized resin (ocular formaldehyde resins are used. Resin - C. Acid number less than 3, dynamic viscosity of 65% solution in butanol / xylene mixture at 20 ° C with about 6000 cP. Resin III. Acid number less than 3, the dynamic viscosity of the solution in isobutanol at about 650 cP Example 2. A pre-treated polyvinyl phosphoric acid aluminum board with anodized oxide layer of 3 g / m is coated with a solution of 1.0% diazopolikondensat, as in measure 1, which was isolated as a mesitylenesulfonate, 1.8% resin and 0.4% crystal violet in ethylene glycol monomethyl ether, irradiated with an argon laser in the visible region, mainly with a wavelength of 488 and 5.14 nm, an emission power of 5 W and a write speed 50 m / s. The non-irradiated regions are washed out with a 6% solution of magnesium sulfate, 20% N-propanol and 0.7% non-ionic wetting agent (alkylphenol - aoliglycol ether) in water. Blunted areas are covered with an oily paint in an offset printing machine and get good printed impressions.
    Example 3. An aluminum board with an anodized oxide layer of 10 g / m is coated with a solution of the following composition: 2 vol.ch. 1- (4-methyl-benzosulfonylimino) -2- (2,5-dimethylphenylaminosulfonyl) -benzoquinone-C1, 4) diazid-C4) and 0.7 wt.h. non-plasticized, highly reactive melamine resin with a dynamic viscosity of a 50% strength solution in ethanol at about 450 cP and an acid number of less than 1 (resin IV) in 80 parts by weight. ethylene glycol monomethyl ether and 20 weight parts. butyl acetate.
    A krypton-ion laser is irradiated in the ultraviolet region mainly with a wavelength of 406 and 423 nm, with a radiation power of 0.9 W and a write speed of 80 m / s. It is treated with a solution of 1.3% sodium sulfate and 1.2% trisodium phosphate (both anhydrous) in water and get good prints.
    Example 4. An aluminum board with an anodized oxide layer of 5 g / m is coated with a solution of 0.4 high parts of the primary condensation product from paraformaldehyde and diphenylamine-4-diazonium chloride in 85% phosphoric acid, 1 weight.h. liquid urethane resin from butylurethane and formaldehyde with a density of 1.1 at 20 ° C and dynamic viscosity at from 6 to 20 cP and
    0.2 weight.h. Astrozone orange (C.1.48040) in 50 weight parts. tetrahydrofuran, 40 weight.h. ethylene glycol monomethyl ether and 10 parts by weight of butyl acetate.
    They are irradiated with an argon laser in the visible region with a radiation power of 5 W and a recording speed of 60 m / s. This is followed by washing with water.
    权利要求:
    Claims (2)
    [1]
    1. Patent NAV number Zb64737, kl.355-18, 1971..
    [2]
    2. Patent of Germany No. 1447953,
    cl. G 03 F 7/08, 1976 (prototype).
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    同族专利:
    公开号 | 公开日
    FR2396336A2|1979-01-26|
    JPS5412906A|1979-01-31|
    FR2396336B2|1983-08-12|
    ATA463578A|1983-06-15|
    NO782197L|1978-12-28|
    AU3687578A|1979-12-13|
    DE2728947A1|1979-01-18|
    JPH0334051B2|1991-05-21|
    ZA783641B|1979-06-27|
    GB1583329A|1981-01-28|
    DE2728947C2|1983-10-20|
    FI782029A|1978-12-28|
    ES471136A2|1979-02-01|
    AT373547B|1984-01-25|
    BR7804019A|1979-04-03|
    CA1103506A|1981-06-23|
    IT7849977D0|1978-06-22|
    NL7806821A|1978-12-29|
    CH634666A5|1983-02-15|
    DK285478A|1978-12-28|
    SE7807169L|1978-12-28|
    BE868455A|1978-12-27|
    AU517940B2|1981-09-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1125160A|1965-01-02|1968-08-28|Azoplate Corp|Light-sensitive materials for use in the production of printing plates and printing plates produced therefrom|
    US3396020A|1965-11-16|1968-08-06|Azoplate Corp|Planographic printing plate|
    DE1522503C3|1967-01-24|1978-11-09|Hoechst Ag, 6000 Frankfurt|Process for the production of printing forms|
    US3664737A|1971-03-23|1972-05-23|Ibm|Printing plate recording by direct exposure|
    JPS5120922B2|1971-10-07|1976-06-29|
    JPS5015603A|1973-06-15|1975-02-19|
    CA1063415A|1974-01-17|1979-10-02|Scott Paper Company|Planographic printing plate with layer of diazo compound, carbon and nitrocellulose|
    CA1049312A|1974-01-17|1979-02-27|John O.H. Peterson|Presensitized printing plate with in-situ, laser imageable mask|DE2822887A1|1978-05-26|1979-11-29|Hoechst Ag|LIGHT SENSITIVE RECORDING MATERIAL AND METHOD FOR THE PRODUCTION OF RELIEF RECORDS|
    DE3581115D1|1984-06-08|1991-02-07|Fromson H A|METHOD FOR PRODUCING LITHOGRAPHIC PRINTING PLATES AND PRINTING PLATES MADE THEREOF.|
    GB8703376D0|1987-02-13|1987-03-18|Vickers Plc|Printing plate precursors|
    DE3716848A1|1987-05-20|1988-12-01|Hoechst Ag|METHOD FOR IMAGING LIGHT-SENSITIVE MATERIALS|
    US5814431A|1996-01-10|1998-09-29|Mitsubishi Chemical Corporation|Photosensitive composition and lithographic printing plate|
    JP3814961B2|1996-08-06|2006-08-30|三菱化学株式会社|Positive photosensitive printing plate|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2728947A|DE2728947C2|1977-06-27|1977-06-27|Process for the production of planographic printing forms with laser beams|
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