 BANK TICKET, METHOD FOR MANUFACTURING A BANK TICKET, COATING FOR A BANK TICKET AND SECURITY ELEMENT
专利摘要:
The present invention relates to a method for producing bank notes on an in-line substrate in a tape process, including the provision of a touch layer. It also relates to a banknote produced by the above method, a bank note having a single ink system, a banknote liner and a touch security feature. 公开号:FR3066434A1 申请号:FR1854095 申请日:2018-05-16 公开日:2018-11-23 发明作者:Benjamin Stevens；Gary Fairless Power 申请人:CCL Security Pty Ltd； IPC主号:
专利说明:
BANK TICKET, PROCESS FOR PRODUCING A BANK TICKET, COATING FOR BANK TICKET AND SECURITY FEATURES FOR BANK TICKET Technical area The present invention generally relates to a bank note, a method of producing a bank note, a coating for a bank note and a security feature for a bank note. Invention background Nowadays, banknotes are produced using sequential printing processes involving different printing technologies. Specifically, a banknote substrate is subjected to several different types of serial printing processes, each of which is completely completed before the next step is applied, which requires significant overhead in terms of handling and storage. The majority of banknotes in the world are printed using sheet feeding systems, i.e. the substrate is cut into sheets of a specified size and each sheet is printed in sequence . The nature of the printing processes used is such that a period of time is required between each of the different printing steps. This waiting between steps is due to the inks used in the individual processes. Although some of the processes use inks which are cured using actinic radiation, most are based on oxidative systems which take a certain amount of time before the inks are sufficiently polymerized to be useful and robust enough to allow the realization of a bank note. This is particularly the case when an Intaglio print is used to create tactile drawings. Intaglio printing processes for the production of banknotes deliver printing heights of the order of 20 to 60 microns or more and the sheets must be allowed to dry without stacking, which could cause the ink to flatten . The typical process is as described below: at. Offset printing (wet or dry) to create background patterns b. Intaglio printing for main imagery / portrait of the ticket vs. Numbering (letterpress printing) d. Recovery e. Inspection f. Cutting / trimming. There may be additional steps, in that additional security features can be added using separate and separate processes, such as screen printing or hot stamping. Each of the above steps requires a separate process with dedicated equipment, staff, additional time management, skills and ink / application chemical composition. There have been attempts to combine these processes into one such as printing on an Intaglio press and web offset by Goebel, as well as the concept SNOW (Single Note on Web, in French only one ticket per tape). These two systems attempt to carry out the various process steps mentioned above in a single online system. Specifically, each different type of printing process is placed in an online system. Technical, quality and cost issues have prevented the success of these processes. In addition, each of these process steps adds considerable cost and time to the production of a bank note. The time component can be one month or more, which means keeping a process running for one month, with staffing requirements of at least two or normally three or more dedicated operators per process, as well as security costs for the management and storage of the volume of materials required. All of this adds to the excessive cost and time involved in producing a bank note. In some cases, these costs may be greater than the value of the banknote itself. It is also necessary that each individual process is in register with the previous process. The very nature of the sheet feeding processes results in the variation not only of the placement of the sheet during the different processes, but also of the mounting of the different blankets, plates and the like. This therefore requires that the customer and the designer of the banknotes tolerate lower levels of precision than they wish between the substrate, the security devices and the security printing. These tolerances can be up to 1.4 mm. Cutting processes used during the manufacture of substrates further exacerbate this to the point that the sheets may be cut at an angle to the drawing, which further increases the need for even greater adaptation of the drawing downstream, at the expense of document security. Variations in tolerances undermine the security of the bank note in that a counterfeiter can take advantage of this problem to produce low quality replicas of the original documents. Currently commercially available bank notes are formed using starting materials consisting of the following: at. The production of a fibrous material to produce a porous, substantially opaque substrate (paper or the like, but also materials similar to Tyvek® by DuPont, which was used without success on banknotes in the 1980s). b. The extrusion-lamination of one or more sheets of fibrous material on one or more clear polymer layers. An opening can be previously prepared in the fibrous layers during the process to create a transparent region or window (Durasafe® Landqart US20060198987A1). vs. Laminating one or more polymer layers on a fibrous layer (paper), then optionally cutting openings in the paper before or after laminating to create a transparent region. This process can have one or more layers of opaque ink coatings added to the surface of the polymer layers to create an ink receiving layer (Hybrid ™ Giesecke and Devrient). d. A transparent polymer substrate which is selectively opacified by the application of one or more layers of opacifying ink (Guardian ™ CCL Secure, formerly Innovia Security, formerly Securency). All the above elements are produced, cut into sheets, and then brought into the various printing processes described above (Offset, Intaglio, numbering, etc.). All currently commercially available banknotes are formed using starting materials consisting of the following: at. Banknotes are produced using a chemical composition of marking inks based on a number of systems, but the majority of these are based on air oxidation inks. More specifically, oil-based inks that oxidize in the presence of air and metallic soaps to form cross-linked structures. There is an increasing use of inks cured by actinic radiation. b. The inks used for polymer and hybrid structures are of a different chemical composition and usually involve crosslinking using a variety of curing chemical compositions, usually resulting in a high molecular weight, highly crosslinked polymer system. . vs. There is, in most cases, a considerable period of time (more than one day and usually at least 3 days) between the time a substrate is produced and the time it is printed. This is due in part to the need to harden and / or coalesce the substrate coatings. d. During this time, not only does the surface of the material increase the molecular weight, but it can also reduce the value of the surface energy. These are desirable properties from the point of view of the robustness of the surface. e. This process, however, reduces the ability of the inks applied to the surface to penetrate the surface and achieve full adhesion. f. The disparate nature of the inks applied to the surface in the form of a printed marking further reduces the adhesion between the surface of the material and the marking inks. g. The relatively low molecular weight of the crosslinked system of the marking ink compared to the surface ink results in that the marking ink is softer than the surface materials and is therefore more prone to wear than surface materials in the same environment. h. To overcome this problem, banknotes are more and more often coated with a coating system with one or two layers per surface, after printing, so as to prevent the marking from wearing out too quickly. This process is expensive to perform and does not solve the problem but tends to minimize it. A hard coating over a relatively softer coating will stop some types of wear but will not solve all wear situations. The above has drawbacks in cost, process or material properties (opacity, durability) or a combination of some or all of these drawbacks. This is made worse by the fact that the banknote must then undergo a full set of separate steps to become a final security document. Although some prior art descriptions refer to the option of printing security documents, including banknotes, in a strip fed system / coil powered system, none of the prior art descriptions specify how implement such a System. For example, US Patent 4,536,016 A, column 4, lines 21 to 26, states that the substrate according to this description can be printed by normal high quality presses for the production of banknotes and that these presses could be leaf presses or band presses. This description is already a multi-step process but gives no indication of how to obtain banknotes in a belt fed press. It is also common to produce individual security features in a coil-fed process and, in fact, to produce a suitable substrate for polymer banknotes, such as a Guardian® substrate. However, the challenges of producing a suitable banknote from reels are not addressed by any of the prior techniques and there are also no solutions to the challenges described. In addition, improvements to banknotes can be obtained using a system fed by strips from reels, which is also not addressed by the prior art. Summary of the invention The present invention aims to obviate, improve or provide an alternative to banknotes, methods of producing banknotes and / or security features of banknotes of the prior art. According to a first aspect of the present invention, there is provided a method for producing a plurality of banknotes including: feeding a substrate, in the form of a strip, to a printing press including a plurality of printing units of the same type of printing process, in which the web will pass through each of the plurality of printing units, and at least a portion of the web is printed in a pass printing; printing a printing layer on the substrate at each of the plurality of printing units, at least one of the printing layers being a marking layer and at least one of printing layers being a touch layer. According to a second aspect of the present invention, a method is provided for producing a plurality of banknotes including: feeding a substrate, in the form of a strip, to a printing press including a plurality of printing units of the same type of printing process, passing the strip through at least two of the plurality of printing units, and at least a portion of the tape is printed in a print pass; the printing pass comprising printing a printing layer on the substrate with at least two of the plurality of printing units, at least one of the printing layers being a marking layer and at least minus one of the printing layers being a tactile layer. The first and second aspects of the present invention have the particular advantages that banknotes can be produced: in a single process; faster than with current processes; and / or at a lower cost than current methods, while also retaining the security characteristics of comparative bank notes of the prior art. The first and / or second aspects of the present invention provide banknotes which can be printed, on at least one side, in a single step. This process speeds up manufacturing and improves registration accuracy through the production of marking and tactile elements in a continuous strip printing process. The following embodiments can be applied to the first and / or second aspects of the invention. In one embodiment, the substrate comprises a polymeric material. A suitable polymer material includes, but is not limited to, polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), poly (ethylene terephthalate) (PET), biaxially oriented polypropylene (BOPP); or a composite of two or more of these materials. In one embodiment, the touch layer is a paper touch layer printed on the substrate, which provides a sensation substantially similar to that of a paper bank note. In one embodiment, the touch layer is a transparent or translucent paper touch layer. A touch layer such as this has the advantage of offering greater public acceptability, because it offers a more similar feeling to traditional banknotes, and also reduces the trend of banknotes. polymers to stick together. In one embodiment, the paper touch layer includes an ink having tactile particles. In one embodiment, the tactile particles have an average particle size of 5 to 35 microns in at least one dimension. In one embodiment, the tactile particles have an aspect ratio of average particle size between substantially 1 and 5. In one embodiment, the paper touch layer contains substantially from 5% to 20% by weight of tactile particles relative to the ink, more preferably, substantially from 10% to 15%. In one embodiment, the tactile particles consist of one or a combination of polyethylene, polypropylene, glass, acrylic, polyurethane, ceramic or rubber. In the context of the present description, the percentages by weight are given for wet inks, before the curing processes, such as those which can evaporate elements of the ink, such as solvents. In one embodiment, the paper touch layer has an average particle depth to binder depth ratio in the range of 3: 1 to 7: 1. In one embodiment, the paper touch layer is applied in a first thickness in first regions and a second thickness in second regions, the second regions providing improved tactility. In one embodiment, the paper touch layer is conductive. In one embodiment, the tactile particles are conductive. In another embodiment, the paper touch layer includes conductive particles in addition to the tactile particles. In one embodiment, the amount of conductive particles is appropriately determined so that the paper touch layer has a surface resistivity of less than 10 11 Ohms per square. In one embodiment, the conductive particles are a fibrous conductive filler which is a fibrous core material on which a conductive layer is formed, the conductive particles preferably containing at least one tin oxide and one antimony oxide. . In one embodiment, the particles of fibrous conductive filler have an average length of 3 to 50 microns, preferably the particles of fibrous conductive filler have an average diameter of 0.01 to 5 microns, and more preferably, the particles of fibrous conductive filler have an average aspect ratio of 3 to 100. In one embodiment, the conductive particles are provided in the paper touch layer in a concentration of substantially 10% to 15% by weight. In one embodiment, the marking layer, or an additional marking layer, includes a drawing element and the tactile layer, or an additional tactile layer, is an improved tactile layer, or includes regions with improved tactile sensitivity, having at least a first improved tactile area imprinted substantially on the drawing element, such that the drawing element appears to have a certain tactility due to the first improved tactile zone, the drawing element and the first zone a improved tactility together forming a safety feature. In this embodiment, the improved tactile layer may be substantially transparent or translucent. In one embodiment, the first improved tactile area has ends which are not substantially larger than the ends of the drawing element. In one embodiment, the first area of improved tactility includes a pattern of sub-areas of improved tactility, the sub-areas preferably being lines and / or dots. In one embodiment, the improved tactile layer contains tactile particles, the tactile particles preferably having a size which has an average size of 5 to 70 microns, or, in another embodiment, 10 to 70 microns. In one embodiment, the tactile particles have an average diameter of substantially 20 microns and, more preferably, are spherical. In another embodiment, the tactile particles have at least one dimension which has an average size of at least 150% of the average size of the smallest dimension. In one embodiment, the tactile particles are retroreflective, or semi-retroreflective. In one embodiment, each of the printing layers printed by the plurality of printing units is printed with an ink having a Relative Energy Difference, compared to any other ink of the printing layers, less than or equal to one, or less than or equal to 0.5, for example less than or equal to 0.3. In one embodiment, each of the inks has a Hansen solubility hydrogen bonding parameter, 5h, having a difference of less than 2.5 compared to any other ink in the printing layers. In one embodiment, each print layer is printed in-line before the immediately preceding layer has fully cured and / or coalesced, which has the effect that where the print layers overlap, the layers of print partially dissolve into each other. In one embodiment, the printing press is an intaglio printing press. In one embodiment, each of the plurality of printing units is an intaglio printing unit. In one embodiment, the printing press comprises one or more additional printing units of a type of printing process different from the plurality of printing units, and the method further comprises printing of a printing layer on the substrate at the additional printing units in the printing pass. In one embodiment, the method includes printing a different print layer design on at least two of the plurality of banknotes, preferably on each of the plurality of banknotes, at each additional printing unit. In one embodiment, at least one additional printing unit is an inkjet printing unit. In one embodiment, the inkjet printing unit prints a unique image and / or text on each bank note. In one embodiment, the inkjet printing unit prints a unique serial number on each bank note. In one embodiment, the substrate web is treated to promote adhesion before printing, at least, a first printing layer. In one embodiment, the treatment includes applying a corona discharge. In one embodiment or an additional embodiment, the treatment is an impression of an adhesion promoting layer. In one embodiment, there is further included the step of inspecting the web during the printing pass, including: taking an image of at least one of the printing layers; and quantifying the print quality and / or registering the print layer. According to a third aspect of the present invention, a banknote produced by the first and / or the second aspect of the present invention is made available. Embodiments of the third aspect of the invention may therefore include any of the embodiments of the first and second aspects of the invention. According to a fourth aspect of the present invention, a banknote is provided having at least two marking layers or at least one marking layer and at least one tactile layer, each layer being printed with an ink having: a difference Relative Energy, compared to the inks of the other layer (s), less than or equal to one, preferably less than or equal to 0.5, or preferably less than or equal to 0.3; and / or Hansen Solubility parameters in the following ranges: ôd between 17 and 19, δρ - between 9 and 11, and ôh - between 5 and 7. In one embodiment, each of the inks has a Hansen solubility hydrogen bonding parameter, h, having a difference of less than 2.5 compared to any other ink in said layers. In one embodiment, each of said layers is printed in line before the immediately preceding layer has completely hardened and / or coalesced, so that, where the layers overlap, the layers partially dissolve one in the other. In one embodiment, the substrate is a polymeric material. A suitable polymer material includes, but is not limited to, polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), poly (ethylene terephthalate) (PET), biaxially oriented polypropylene (BOPP); or a composite of two or more of these materials. In one embodiment, the banknote includes a touch button in which the touch layer is a paper touch layer printed on the bank note, which provides a sensation substantially similar to that of a paper bank note. In one embodiment, the tactile layer is printed with an ink having a Relative Energy Difference, compared to all the other inks of the other printing layers, less than or equal to one, for example less than or equal to 0, 5, or less than or equal to 0.3. In one embodiment, the paper touch layer includes tactile particles, the tactile particles preferably having a depth of 5 to 35 microns and, more preferably, the tactile particles having an aspect ratio between substantially 1 and 5. In one embodiment, the paper touch layer contains substantially from 5% to 20% by weight of tactile particles relative to the transparent ink, preferably substantially from 10% to 15%. In one embodiment, the tactile particles consist of one or a combination of polyethylene, polypropylene, glass, acrylic, polyurethane, ceramic or rubber. In one embodiment, the paper touch layer has an average particle depth to binder depth ratio in the range of 3: 1 to 7: 1. In one embodiment, the paper touch layer is applied in a first thickness in first regions and a second thickness in second regions, the second regions providing improved tactility. In one embodiment, the paper touch layer includes conductive particles. In one embodiment, the amount of conductive particles is appropriately determined so that the paper touch layer has a surface resistivity of less than 10 11 Ohms per square. In one embodiment, the conductive particles are a fibrous conductive filler which is a fibrous core material on which a conductive layer is formed, the conductive particles preferably containing at least one tin oxide and one antimony oxide. . In one embodiment, the particles of fibrous conductive filler have an average length of 3 to 50 microns, preferably the particles of fibrous conductive filler have an average diameter of 0.01 to 5 microns, and more preferably , the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. In one embodiment, the conductive particles are provided in the paper touch layer in a concentration of substantially 10% to 15% by weight. In one embodiment, the at least two printing layers include a marking layer and a touch layer, and the marking layer, or an additional marking layer, includes a drawing element and the touch layer, or a layer additional touch, is a layer with improved touch, or includes regions with improved touch, having at least a first area with improved touch imprinted substantially on the drawing element, so that the drawing element appears to have some touch due to the first improved tactile zone, the design element and the first improved tactile zone together forming a safety characteristic. In one embodiment, the touch layer is a transparent or translucent paper touch layer. In one embodiment, the first improved tactile area has ends which are not substantially larger than the ends of the drawing element. In one embodiment, the first improved tactile area includes a pattern of improved tactile sub areas, the sub areas preferably being lines and / or dots. In one embodiment, the enhanced tactile layer contains tactile particles, the tactile particles preferably having a size which has an average size of 5 to 70 microns. In one embodiment, the tactile particles have an average diameter of substantially 20 microns and, more preferably, are spherical. In one embodiment, the tactile particles are retroreflective, or semi-retroreflective. In one embodiment, each printing layer is a layer printed by intaglio. In another embodiment, at least one printing layer is a layer printed by intaglio, and at least one printing layer is a layer printed by inkjet. According to a fifth aspect of the present invention, there is provided a bank note having a substrate having polymeric exterior surfaces, including a coating, which coating is a paper touch layer applied on at least one of the exterior surfaces, which provides a sensation substantially similar to that of a paper banknote, the paper touch layer including tactile particles, to provide paper touch, and the tactile particles being conductive and / or the paper touch layer including particles conductive, to improve the anti-static properties of the bank note. In one embodiment, the tactile particles have a depth of 5 to 35 microns, and more preferably, the particles have an aspect ratio between substantially 1 and 5. In one embodiment, the tactile particles have, at least on average, a dimension in at least one direction which is greater than 150% of the smallest dimension. In one embodiment, the paper touch layer contains substantially 5% to 20% by weight of tactile particles relative to the ink, preferably substantially 10% to 15%. In one embodiment, the tactile particles consist of one or a combination of polyethylene, polypropylene, glass, acrylic, polyurethane, ceramic or rubber. In one embodiment, the paper touch layer has an average particle depth to binder depth ratio in the range of 3: 1 to 7: 1. In one embodiment, the paper touch layer is applied in a first thickness in first regions and a second thickness in second regions, the second regions providing improved tactility. In one embodiment, the amount of conductive particles is appropriately determined so that the paper touch layer has a surface resistivity of less than 10 11 Ohms per square. In one embodiment, the conductive particles are a fibrous conductive filler which is a fibrous core material on which a conductive layer is formed, the conductive particles preferably containing at least one tin oxide and one antimony oxide. . In one embodiment, the particles of fibrous conductive filler have an average length of 3 to 50 microns, preferably the particles of fibrous conductive filler have an average diameter of 0.01 to 5 microns, and more preferably , the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. In one embodiment, the conductive particles are provided in the paper touch layer in a concentration of substantially 10% to 15% by weight. In one embodiment, the coating is applied to the entire banknote, so that the banknote has a paper touch layer all over it, but it can be selectively applied for design or of process. For example, when the banknote has a transparent window, or other security feature, it may be chosen not to print the overlay in this area. In one embodiment, the coating is an exterior coating. In one embodiment, the coating includes a UV curable ink. In one embodiment, the coating includes a solvent-based ink. According to a sixth aspect of the present invention, there is provided a banknote having a coating, which coating is a transparent or translucent layer applied to the banknote, which includes conductive particles. In one embodiment, the coating is an exterior coating. In one embodiment, the amount of conductive particles is appropriately determined so that the coating has a surface resistivity of less than 10 11 Ohms per square. In one embodiment, the conductive particles are a fibrous conductive filler which is a fibrous core material on which a conductive layer is formed, the conductive particles preferably containing at least one tin oxide and one antimony oxide. . In one embodiment, the particles of fibrous conductive filler have an average length of 3 to 50 microns, preferably the particles of fibrous conductive filler have an average diameter of 0.01 to 5 microns, and more preferably , the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. In one embodiment, the conductive particles are provided in the coating in a concentration of substantially 10% to 15% by weight. According to a seventh aspect of the present invention, there is provided a banknote having a substrate having polymeric exterior surfaces, including a coating, which coating is a tactile layer applied to at least part of one of the exterior surfaces. having tactile particles which have a size of 5 to 35 microns in at least one dimension, and more preferably the tactile particles have an aspect ratio between substantially 1 and 5, the tactile layer being applied in a first thickness in first regions and a second thickness in second regions. In one embodiment, the tactile particles have, at least on average, a dimension in at least one direction which is greater than 150% of the smallest dimension. In one embodiment, the tactile particles provide a sensation substantially similar to that of a paper banknote, in at least the first regions. In one embodiment, the touch layer includes conductive particles. In one embodiment, the conductive particles are a fibrous conductive filler which is a fibrous core material on which a conductive layer is formed, the conductive particles preferably containing at least one tin oxide and one antimony oxide. . In one embodiment, the particles of fibrous conductive filler material have an average length of 3 to 50 microns, preferably the particles of fibrous conductive filler material have an average diameter of 0.01 to 5 microns, and more preferably , the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. In one embodiment, the amount of conductive particles is appropriately determined so that the paper touch layer has a surface resistivity of less than 10 11 Ohms per square. In one embodiment, the conductive particles are provided in the paper touch layer in a concentration of substantially 10% to 15% by weight. In one embodiment, the coating includes a UV curable ink. In one embodiment, the coating includes a solvent-based ink. According to an eighth aspect of the invention, there is provided a tactile security feature for a banknote including a printed design layer having a print depth of 5 microns or less, a printed touch layer, having particles tactile, printed on the drawing layer, the tactile layer conferring an apparent tactility on the drawing layer. According to a ninth aspect of the present invention, there is provided a tactile security feature for a banknote having a printed marking layer including a drawing element and a printed improved tactile layer, which has at least a first area. with improved tactility overlapping / covering the drawing element, so that the drawing element seems to have a certain tactility due to the overlap / overlap of the first improved tactile zone, the drawing element and the first tactile zone improved together forming the safety feature. In one embodiment, a lateral extent of the first improved tactile area corresponds substantially to a lateral extent of the drawing element. In one embodiment, the enhanced tactile layer contains tactile particles, the tactile particles preferably having at least one dimension which has an average size of 5 to 70 microns. In one embodiment, the tactile particles consist of one or a combination of polyethylene, polypropylene, glass, acrylic, polyurethane, ceramic or rubber. In one embodiment, the tactile particles have an average diameter of substantially 20 microns and, more preferably, are spherical. In one embodiment, the tactile particles have a size of 5 to 35 microns in at least one dimension, and, more preferably, the tactile particles have an aspect ratio between substantially 1 and 5, the tactile layer being applied in a first thickness in first regions and a second thickness in second regions. In one embodiment, the tactile particles have, at least on average, a dimension in at least one direction which is greater than 150% of the smallest dimension. In one embodiment, the tactile particles are retroreflective, or semi-retroreflective. According to a tenth aspect of the invention, there is provided a printing press for the production of a plurality of banknotes on a continuous strip of substrate, the printing press including a plurality of printing units. printing of the same type of printing process, the plurality of printing units comprising at least one printing unit configured to print a marking layer and at least one printing unit configured to print a touch layer on the substrate in the same print pass. Embodiments of the tenth aspect of the invention may include embodiments corresponding to any of the preceding aspects, in particular the first or second aspect. In one embodiment, each of the plurality of printing units is a debossing unit, and in another embodiment, a debossing cylinder of the at least one printing configured to print a touch layer is configured to print an ink containing particles. In one embodiment, the printing press comprises a plurality of printing units configured to print marking layers on the substrate, and, in an additional embodiment, a plurality of printing units configured to print tactile layers on the substrate. In one embodiment, the printing press includes a corresponding plurality of drying units. In one embodiment, the printing press comprises a first plurality of printing units configured to print at least one marking layer and at least one touch layer on a first surface of the substrate, a turning bar for turning the substrate after it has passed through the first plurality of printing units, and a second set of printing units configured to print at least one marking layer and at least one touch layer on a second surface of the substrate after it was turned over by the turning bar. In one embodiment, the printing press includes one or more additional printing units of a different type of printing processing than the plurality of printing units. In one embodiment, at least one additional printing unit is configured to print a different printing layer design on at least two of the plurality of banknotes on the continuous substrate strip, preferably on each of the plurality of bank notes. In one embodiment, at least one additional printing unit is an inkjet printing unit. In one embodiment, the printing press includes a corona machine which treats both surfaces of the substrate by corona discharge to increase the adhesive properties of the surface of the substrate. Optionally, the printing press may include an inspection system, and may further optionally include a guillotine machine for cutting the web of continuous substrate into sheets. Alternatively, the printing press may include a winding system configured to keep the substrate web continuous after it has been printed. Definitions Bank note As used here, the term bank note refers to all securities documents used in transactions. Banknotes are a special case of security documents because they are in large quantity, are the subject of very many transactions and are subject to heavy wear. Due to heavy wear, suitable solutions for other security documents are often not suitable for banknotes, especially with regard to the adhesion of an element, such as a printed ink or a security feature, on the substrate of the bank note. Security Device or Feature As used herein, the term security feature or feature includes any one of a large number of safety features, elements or features intended to protect the banknote from counterfeiting, copying, alteration or falsification. Security devices or features can be made in or on the banknote substrate or in or on one or more layers applied to the base substrate, and can take a variety of forms, such as security wires embedded in layers of the bank note; security inks such as fluorescent, luminescent and phosphorescent inks, metallic inks, iridescent inks, photochromic, thermochromic, hydrochromic or piezochromic inks; printed and embossed features, including relief structures; interference layers; liquid crystal devices; lenses and lenticular structures; optically variable devices (OVD) such as diffractive devices including diffraction gratings, holograms, diffractive optical elements (DOE). substratum As used herein, the term substrate refers to the base material from which the banknote is formed. Unless otherwise stated, the base material may be paper or another fibrous material, such as cellulose; a plastic or polymeric material (the two terms being interchangeable) including, but not limited to, polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), polyterephthalate ethylene (PET), biaxially oriented polypropylene (BOPP); or a composite of two or more materials, such as a laminate of paper and at least one plastic, or of two or more polymeric materials. In particular, the base material may be a polymer film opacified during manufacture, for example by the addition of titanium dioxide or the creation of air bubbles. Opacifying layers One or more opacifying layers can be applied to a transparent or translucent substrate to increase the opacity of the security document. An opacifying layer is such that L T <Lo, where Lo is the amount of light incident on the document and Ι_τ is the amount of light transmitted through the document. An opacifying layer may include any one or more of various opacifying coatings. For example, opacifying coatings may include a pigment, such as titanium dioxide, dispersed in a binder or carrier of crosslinkable heat activated polymeric material. Alternatively, a substrate of transparent plastic material could be sandwiched between opacifying layers of paper or other partially or substantially opaque material on which marks can then be printed or otherwise applied. Touch paper As used herein, the term paper touch refers to a particular tactile sensation (tactile) or haptic property on the portion of the printed, cured surface. Because the haptic properties of paper feel are typically measured by human touch, they are somewhat subjective. In the coatings industry, it is more conventional to use the term soft touch, and in some cases paper-like soft touch, and the term paper touch is a subset of soft touch. Overall, a layer or print described as having a paper feel indicates that the surface of the described layer has a touch similar to that of a similar paper-based product, in which the surface roughness of the paper product is detectable by the sense of human touch. As such, a paper touch layer or print represents an increase in surface roughness for polymeric substrates, which are typically very smooth. One method of quantifying this surface roughness consists in measuring the coefficient of friction. What is particularly relevant to the paper touching term as used here is a comparison with paper banknotes. Different paper banknotes have different coefficients of friction. For example, a US dollar bill has a value of 0.1716, a 10 Euro bill has a value of 0.1078 and a 10000 Korean won bill has a value of 0.1563 1 (note that these measures contrast Teflon® tip banknotes, used in 1 Song, Han Wook & Woo, Sam Yong & Kyu Park, Yon & Lee, Sungjun. (2008). “Measurements of the Friction Coefficient for Banknotes”. MAPAN-Journal of Metrology Society of India. 23. as a human finger approximation). From these data, it is reasonable to consider in this context that the paper feel is, at least, a coating which has a coefficient of friction of between approximately 0.1 and 0.2. Another measure of the coefficient of friction is the note against note measure, which is the coefficient of friction of a bank note against another bank note. An appropriate specification for this measurement of the coefficient of friction is 0.2 to 0.4, which has been confirmed by measurements (additional description below). Printing process Many different types of printing processes are used for printing on substrates. As discussed above, for the traditional banknote industry, the typical types of printing processes that are implemented are sheet fed offset printing and sheet fed Intaglio printing. More specifically, a substrate is fed in sheets to an offset printing press and then, separately, to an Intaglio printing press. Other types of printing processes that are commonly found in and outside the security industry are letterpress, intaglio, flexography and inkjet printing. All of these printing processes require special types of substrate feed, printing equipment and inks. In general, although all types of printing processes can be configured to be fed by a strip of substrate, the types of printing processes which can operate at the highest speeds, and therefore at the lowest costs, are flexography and intaglio engraving. As described in more detail below, the generic term Intaglio printing can be used to cover printing techniques in which an image is incised in a surface and the incised line or recessed area retains the ink for the impression. However, in printing, and in particular in security printing, a distinction is made between the types of intaglio printing process (also known as rotogravure) and Intaglio (also known as intaglio) . Those skilled in the art of security printing will immediately understand that a printing process Intaglio involves high viscosity ink applied to incised lines in an Intaglio printing plate which is applied at high pressure to the substrate. Similarly, those skilled in the art of security printing will immediately understand that an intaglio printing process refers to lower viscosity inks captured from an ink bath by a cylinder in which cells are etched and applied to a strip of substrate. Consequently, any reference to printing units of the same type of printing process in the present description refers to printing units of a single particular printing process, as in the examples given above, as will readily be understood by those skilled in the art of security printing. Brief description of the drawings We will now describe embodiments of the invention with reference to the accompanying drawings. It will be understood that the embodiments are given only by way of illustration and that the invention is in no way limited by this illustration. In the drawings: Figure 1A is a schematic illustration of a printing press configured to produce a banknote according to at least one aspect of the present invention; Figure 1B is a flow diagram of a method of producing a bank note according to at least one aspect of the present invention; Figure 2A is an exploded sectional view of a bank note according to one or more aspects of the present invention; Figure 2B is a sectional view of a bank note according to one or more aspects of the present invention; Figure 3 is a schematic view of a coating according to one aspect of the present invention; Figure 4 is a graphical representation of an embodiment of a tactile security feature according to an aspect of the present invention; and Figure 5 is a graphical representation of an embodiment of a tactile security feature according to an aspect of the present invention. detailed description As noted above, many disadvantages are associated with known methods of producing banknotes. In particular, separate printing processes are required, which increases the cost and time required to produce banknotes with little or no additional security. Specifically, the fact that separate printing processes are used is not seen as a deterrent to counterfeiters. However, there are a number of features that the general public recognizes when handling banknotes, which are distinct from specific security features. These are: the print quality, and the feel of the bank note. The quality of printing on modern banknotes is not an obstacle to counterfeiting banknotes but, in general, the public will immediately be wary of banknotes which do not have a high printing quality. As such, it acts as a first indicator and counterfeiters often produce poor quality counterfeits. The feel of the bank note comes down to a number of factors but, in particular, the substrates and the printing used on the bank notes have remained similar for many years, so that the public has confidence in the notes. bank that have a touch similar to what they have handled in the past. The feel of a conventional bank note typically comes from two different sources: the substrate from which the bank note is made and the Intaglio print design used on the bank note. Traditional paper substrates appear slightly rougher than more modern polymer banknotes, especially in areas where there is no Intaglio printing. The Offset printing used for the background drawings leaves no remarkable touch characteristics and tends to represent the touch of the substrate on which it was printed. Banknotes that do not have an Intaglio print have a very smooth feel compared to those that have one. It is important to note that the generic term Intaglio printing can be used to cover printing techniques in which an image is incised in a surface and the incised line or the recessed area retains the ink for printing. However, in printing, and in particular in security printing, a distinction is made between printing by intaglio, or rotogravure, and Intaglio, or intaglio. In intaglio printing, the printing surfaces are cylinders which are produced, for example by an electron beam, by a laser beam or by an engraver. Intaglio printing is distinguished in that different values of gray or color of the printed image are produced by cells of different densities, sizes and / or depths arranged regularly on the cylinder. A signature of the intaglio printing is the slightly toothed edge in a straight line, typically visible only under magnification, which is an artefact of the cellular structure. This signature is also visible in a total variation of an image. An important aspect of intaglio printing is the selection of appropriate cell structures, and repeats, or lined patterns, of the cells. In Intaglio printing, on the other hand, linear dips are formed in the printing plates to produce a printed image. In the mechanically manufactured intaglio plate, a wider line is produced with greater engraving depth due to the usually tapered engraving tools. In addition, the ink receptivity of the engraved line and therefore the opacity of the printed line increases with increasing engraving depth. In the chemical etching of Intaglio plates, the non-printing areas of the plate are covered with a chemically inert lacquer. Subsequent chemical etching produces the etching of the exposed plate surface, the depth of the etched lines depending in particular on the time of chemical etching and the width of the line. Due to the depths used, the type of ink and pressures required for Intaglio printing are very different from that of intaglio printing. As such, the yield of intaglio engraving, which is typically a strip-fed, coil process, is considerably higher. The Intaglio technique, in particular the Intaglio steel plate technique, produces a characteristic printed image which is easily recognizable by a layman and which is typically not considered to be reproducible with other conventional printing processes. If the engravings made in the printing plate are sufficiently deep, a data carrier printed by Intaglio gives, by embossing, due to the high pressures used, and inking, a printed image which forms a perceptible relief with the sense of touch. Method for producing a bank note and printing press for producing a plurality of bank notes Referring now to Figures 1A and 1B, we will now describe aspects of the present invention which is a method of producing a plurality of banknotes and a printing press for producing a plurality of banknotes bank. With respect to Figure 1A, a substrate 10, in the form of a continuous strip of polymeric material, is located on a spool 12 at one end of a printing press 14. In this example, the printing press Printing 14 is an intaglio printing press, in that the printing process used to apply printing layers is an intaglio printing. The substrate 10 is unwound from the reel 12 and passed through the printing press 14. The printing press 14 comprises a corona discharge machine 16, a plurality of intaglio printing units 18 and a bar inversion 20. The substrate 10 is brought to the corona machine 16, which treats the two surfaces of the substrate 10 by corona discharge, which increases the adhesive properties of the surface of the substrate 10 or of the coatings thereof. Leaving the corona machine 16, the substrate 10 is brought to a first set A of the printing units 18 before being returned to the level of the turning bar 20, then to a second set B of the printing units 18 Each printing unit 18 applies a printing layer to the substrate 10. Each printing unit 18 has a corresponding drying or curing unit 22. In this example, the drying unit 22 comprises a heater. air which raises the temperature of the substrate 10 and which promotes drying or hardening of the printed layer applied by the corresponding printing unit 18. Depending on the ink and printing system used, appropriate drying or curing units may be used in place of the drying units 22. Figure 1B depicts a method 40 of producing a banknote. In a first step 42, a substrate, in the form of a strip, is fed to a printing press, the printing press including a plurality of printing units of the same type of printing process. More specifically, for example, if the type of printing process was intaglio printing, the printing units would be intaglio printing units, it being understood that each individual unit may be of different configuration , and possibly print a different type of ink, but the printing unit is in accordance with what a person skilled in the art would recognize as an intaglio printing unit. In step 44, the tape is passed through each unit of the plurality of printing units. In step 46, at least a portion of the tape is printed in a print pass, printing a printing layer on the tape. In step 46, at least one of the plurality of printing units prints a marking layer and at least one of the plurality of printing units prints a touch layer. The method 40 may optionally include the additional steps described with respect to the printing press of Figure 1A. Importantly, the method of producing a banknote and a printing press for the production of a plurality of banknotes comprises printing at least one marking layer and a layer tactile by the printing units 18. The tactile layer can be either a layer intended to provide a specific tactility to one or more drawing elements, or a layer designed to provide the banknote with a particular type of touch, such as the feeling that the material is made of paper, a combination of the two. It is also possible that several touch layers are present, providing one or more of the touch functions mentioned above. In the normal production of a banknote according to this method, more than one of the printing units 18 would print a marking layer. For example, a marking layer would typically be required for each color on the banknote, on each side of the banknote. In the context of all the embodiments of the invention, a marking layer is a layer which, alone or in combination with other marking layers, produces markings, which are one or more design elements which give the context of the bank or issuing country, the value and / or the associated denomination, or another recognizable element, such as text, a number, pictures of portraits, objects or scenes, and the like. Typically, a bank note has a characteristic of an important personality of the issuing country, with numbers indicating the denomination, and one or more layers of marking would provide these types of characteristics. Importantly, a marking layer is not considered to be an opacifying layer, even if the marking layer has some effect on the opacity of the banknote, since its intended use is not to opacify but produce a drawing or visual marking. As used elsewhere in the present description, the term marking must be interpreted as described above. In the context of all the embodiments of the invention, a tactile layer is a layer which imparts a measure of increased tactility to the substrate and / or to the layer on which it is deposited. For example, if the substrate on which the touch layer is printed has a coefficient of friction of 0.1, then it is expected that the touch layer will have a higher coefficient of friction. A tactile layer intended to provide a paper feel has features designed to mimic the feel of paper banknotes, as described above. A touch layer which is an enhanced touch layer provides additional touch. In at least some embodiments, this improved tactile layer is intended to provide an Intaglio-like feel, which is the tactility that is provided by Intaglio printing on known banknotes. The marking layers produced in this process can have much tighter tolerances than the banknotes of the prior art. For example, on an intaglio printing press, as the printing layers are printed in line, the alignment tolerances are about 100 microns and a maximum of 300 microns, compared to about 1.4 mm, or 1400 microns, with prior art banknotes which require separate printing processes. A printing press 14 includes, in addition to the plurality of intaglio printing units 18, one or more additional printing units 19 of a different type of printing process. As depicted in Figure 1A, the substrate 10 is fed to inkjet printing units 19, which each apply an inkjet printing layer to the substrate 10 in the same printing pass than that in which the intaglio printing units 18 print intaglio printing layers on the substrate 10. The inkjet printing units 19 have corresponding drying or curing units 23 , for example a UV lamp, for activating the curing of a UV curable inkjet ink, printed by the inkjet printing units 19. It will be understood that the additional printing units can be suitably provided in line, at different locations of the printing press 14, for example before or after the plurality of intaglio printing units 18, or interposed between intaglio printing units 18, as depicted in Figure 1A. The use of additional printing units can provide additional advantages in the process of the invention. In particular, inkjet printing units 19 provide the ability to personalize each bank note individually, for example by printing a serial number or a unique bar / QR code on each bank note. Alternatively, the additional printing units can be used to print one or more additional marking layers, in addition to the marking layer or layers printed by the intaglio printing units 18. However, well that additional printing units 19 are a preferred characteristic of the example described in FIG. 1A, it will be understood that they are not generally required in the methods according to the invention. An example of a suitable inkjet printing unit is a Domino Trimatt K600i inkjet printer, configured for printing on tape. These printers are capable of printing with UV curable inks, which have suitable compatibility with printing layers imprinted by intaglio according to embodiments of the invention. In the example described in Figure 1A, a corona machine 16 is used to promote the adhesion of the ink to the strip of polymeric material. It is the preferred method of promoting adhesion, but other methods may be used, such as plasma treatment or the application of an additional adhesion promoting layer. For example, an adhesion promoting layer can be printed, or otherwise produced, on the strip of polymeric material. This step could be carried out during the manufacture of the polymer material, in a separate process step or in line with the printing units 18, or by one of them. However, the corona machine 16 and any other method of promoting adhesion, although preferred, are optional. Adhesion promotion is of course itself an optional step in the present invention and may or may not be necessary. For example, as will be described below, paper substrates do not need such steps. Importantly, banknotes in general have considerably different adhesion requirements than other printed products. Banknotes are essentially reusable products that are exposed to heavy wear and chemical exposure environments. As a result, they must pass adhesion tests which are much more stringent than the normal requirements for printed products. For example, a commercially available crumple tester, particularly for crumpling banknotes, is available from IGT Testing Systems, Singapore. Typically, adhesion is tested after a specified number of creases by a tape test, in which an adhesive strip is placed on the banknote and then removed. If the adhesive strip removes more than a specified percentage of the printed ink, the product can be considered to have insufficient adhesion properties. This is a more severe adhesion test than for other security documents, since banknotes require much greater adhesion. In addition, banknotes also need to have improved wear resistance characteristics compared to other security documents, since wear cannot simply be associated with adhesion. One such method of measuring wear resistance is to use an abrasion machine to perform an accelerated wear test. For example, a TABER® Rotating Platform Abrasion Tester can be used for this accelerated wear test. The substrate 10 is then brought to an inspection system 24. The inspection system 24 takes images of the printing layers and quantifies the print quality and register alignment of the printing layers. The inspection system 24 then provides feedback to the printing units 18, which can automatically adjust to correct, at least, register alignment, and in some cases, other quality issues of printing. The inspection system 24 also reads a unique identifier printed either above or below each bank note, so that bank notes printed with detected defects are registered as such in the system. The substrate 10 is then fed to a guillotine machine 26 which cuts the substrate 10 into individual banknotes, or, if desired, into sheets of banknotes. In either case, the guillotine machine 26 automatically separates the banknotes printed with faults and sends them into a stack of defective banknotes 28. Banknotes which are not detected as having any faults are sent to a stack of finished banknotes 30. It will be understood that the on-line inspection system 24 and the guillotine machine are preferable characteristics of the example described in Figure 1 A. Many of the advantages offered by this method of producing banknotes are obtained by a web fed printing press, which does not have these systems online. In another embodiment, the printing press 14 has a winding system (not shown), after the last printing unit, and either does not have an on-line inspection system or does not guillotine machine, or has neither. These systems can then be provided as offline process steps to generate the final banknotes. It will further be understood that the advantages of printing a bank note using a single printing press are obtained most of the time even if each side of the bank note has been printed in processes of printing on the same printing press. More specifically, although it is preferred that both sides are printed in a single printing pass, the advantages of reduced handling, improved adhesion and alignment in register are still obtained with printing from one side at a time. In addition, although the above method is described as using a polymeric material as a substrate, the advantages of this method are obtained using any substrate. More specifically, higher yield and lower handling, among other advantages, do not depend on the substrate. The use of traditional paper as a substrate is also suitable. However, a polymeric material is preferred because the smoother surface of a polymeric material allows higher resolution when printing, as ink enters or moves through the fibers of the paper, causing burrs and imposing a lower resolution requirement. As described elsewhere, the fact of imparting a paper feel to a polymer substrate is a particular advantage of embodiments of the invention. Bank note Let us now refer to Figure 2A, which is a schematic cross-sectional representation of a banknote 50 which is produced, for example, by the process described and by the printing press illustrated according to the Figure 1A and Figure 1B. The bank note 50 includes a polymer film substrate 52 which, in this example, is an opacified polymer film. It is preferably a polymer film which is opacified during the production of the film itself, by inclusion of an opacifying additive in the polymer during extrusion. More specifically, the polymer film is opacified because of its mass properties rather than by the addition of opacifying layers. One such example of a suitable polymer film is biaxially oriented polypropylene (BOPP) in which titanium oxide (T1O2) was added during manufacture to create a white polymer film. Alternatively, the substrate 52 could be a transparent polymer film opacified by application of one or more opacifying layers, such as Guardian®. A bulk opacified polymer film, rather than adding opacifying layers, has a number of distinct and surprising advantages. In particular : • Over the life of a banknote, a wear characteristic is wrinkling. In substrates based on an opacified transparent film, such as Guardian®, such wrinkling causes a loss of adhesion at the place where the bill is crumpled, which creates crumple lines, which are lines at the level at which the amount of clouding ink has been reduced or at which level there is no more clouding ink at all. Because the polymer film is opacified in the mass, there is no opacification break due to crumpling. Opacifying inks applied to a transparent film are typically solvent-based inks. Generally, four to six layers of opacifying inks are applied to provide the desired opacity. In addition, these layers are almost completely covering, with the exception of windows or shadow images. As such, there is a significant amount of solvent to be evaporated, which generates a large amount of volatile organic compounds (VOCs) as a by-product of the printing process. The use of a polymer film which is opacified in the mass considerably reduces the amount of solvent used, since it is not necessary to use opacifying inks, which therefore considerably reduces the amount of VOCs released, so that '' a greener product and process is obtained. • A bank note is preferably about 70 to 110 microns thick. For a transparent film having opacifying layers, such as Guardian®, the film is typically about 75 microns thick and the rest of the thickness is provided by the opacifying layers, which gives about 12 to 18 microns of opacifying layers. For a polymer film which is clouded in the mass, the light scattering (which produces the clouding) has, at least, a thickness of 70 microns to scatter the light, rather than only about 18 microns. This results in better opacity and reduced transparency vision. Transparent vision is the situation in which, in transmission, it is possible to see characteristics on the opposite side of the banknote. A reduced transparency vision is particularly advantageous because it reduces the need for the markings on each side of the bank note to be complementary, which avoids creating an unwanted design. • Opacified layers on a transparent film can also cause mechanical failure of other characteristics, such as printing or security characteristics, if the integrity of the opacified layer is compromised (for example by crease lines such as described above). A polymer film which is opacified in the mass prevents the occurrence of these problems, since it is only the adhesion of the other characteristics to the film which counts, and not the adhesion of the characteristic to the opacified layer. The substrate 52 is preferably 70 to 110 microns thick, more preferably 80 to 100 microns, and preferably substantially 90 microns thick. A thickness of about 90 microns gives a final banknote product having properties which are very recognizable by the general public in terms of flexibility, thickness and feel, as being similar to those of banknotes produced by the past, such as those made of paper. This is particularly the case for polypropylene polymer substrates and, in particular, BOPP substrates. This allows for greater acceptance by the general public when issuing a new ticket. In addition, this thickness also provides the best processability for automatic banknote processing machines, as it also corresponds to the thicknesses that automatic banknote processing machines would typically handle. In addition, the production of polymer films of this type with thicknesses greater than 70 microns is difficult and requires significant technical know-how and capital. As such, the suppliers of these specialty polymer films are large companies and can be easily identified. This increases the security of the banknote, since obtaining polymer films of this thickness, and in particular polypropylene, and even more particularly in BOPP, is extremely difficult. The substrate 52 has a number of printing layers applied to each side, each printing layer being applied using the same printing process. More precisely, each printing layer is applied simultaneously or consecutively in the same printing pass to at least one face of the substrate. In the embodiment of Figure 2A, a front face 54 of the banknote 50 has marking layers 56A, 58A and 60A which are three distinct colors applied in a desired design. The printing layer 62A is, in this example, a coating which is typically applied to the entire banknote, but which can be excluded in certain areas, such as windows, and which offers a certain protection to the printing layers underlying as well as other desirable functions, as described in more detail below. The preferred embodiment of this coating has a number of distinct advantages, which are described in more detail below. Generally speaking, the coating is a tactile layer having added particles which provide both a visual and a tactile sensation which is similar to paper. In this example, a rear face 64 of the banknote 50 has printed layers similar to those described for the front face 54. More specifically, marking layers 56B, 58B and 60B are three separate colors applied according to a desired design. and a printing layer 62B is a coating which is typically applied to the rear face 64. However, it will be understood that the marking layers 56B, 58B and 60B do not necessarily have to correspond in color and in drawing to the marking layers 56A, 58A and 60A, just as there is no need for a tactile layer similar to the printing layer 66 (described below). On the front face 54, an additional printing layer 66 is applied to the top coating 62A. The printing layer 66 is an improved tactile layer which is formed of an ink, or a lacquer, or other suitable material, comprising particles. In this case, the particles are of sufficient size to protrude from the lacquer, ink or other suitable material, and offer a considerably rougher feel than that of the top coating. The enhanced tactile layer, in combination with other components of the printing layers, forms an important security feature of banknote 50 and is described in more detail below. A bank note as described in connection with Figure 2A has a number of particular advantages over previously produced bank notes. First, the banknote is produced in a continuous tape printing process. In one embodiment, the inks used in the tape printing process are of the same type and are all designed for the same type of printing. In another embodiment, the inks are all suitable for a tape printing process, but are not necessarily of the same type of printing process. In the preferred example, the inks are all intaglio inks and the printing layers are all printed using an intaglio printing process. There are a number of distinct advantages offered by a banknote made up of print layers that are suitable for printing in the same tape printing process, in particular: 1. The inks can all be of the same type and therefore all have the same, or substantially the same, Hansen Solubility Parameters (HSP), an advantage of which is that the adhesion between the printing layers is improved compared to print layers printed with different inks, and therefore having relatively different HSP settings. This advantage is manifested by improved wear resistance characteristics compared to banknotes having different printing processes for depositing ink layers, which means a longer life for a banknote. product according to the invention. The details and benefits of a specific type of ink system will be described in more detail below. 2. Printing layers are deposited sequentially, in the case of intaglio and flexographic printing presses and other similar printing presses, at a typically relatively high speed, which means that, although a printing layer can be sufficiently dried for an additional printing layer to be added, each printing layer is not fully dried / cured when all the printing layers have been added. As such, the print layers completely dry or harden while in contact with each other, creating improved adhesion between the print layers, compared to printing on fully dry / cured print layers , which results in improved wear resistance. 3. Register alignment between the ink layers can be controlled to a higher degree, which reduces overall system tolerances. For example, a typical offset machine will have color alignment variances of +/- 1 mm or more, although a Simultan specialty press may have variances as small as 50 microns, and a register between stages of printing, on different printing presses, would be approximately 1.4mm. In, for example, an intaglio printing press, the tolerances from one unit to another would typically be 100 microns, and at most 300 microns. As such, the use of a single type of printing process considerably reduces the printing tolerances, in particular between the printing units. Another embodiment uses radiation curable inks suitable for web printing presses for printing layers, preferably UV curable inks. Again, the other preferred embodiments are radiation curable inks suitable for an intaglio printing press. UV curable inks, as well as other radiation curable inks, are inks in which UV (or other radiation) initiates a photochemical reaction which generates a network of crosslinked polymers. Most radiation-curable inks do not require a solvent, which allows for a higher charge of solids (because the ink retaining elements on print cylinders are not partially caught with solvent in the ink, which eventually evaporates). In some cases, a minor amount of solvent can be used to obtain a partial viscosity suitable for printing, but this is a significantly reduced amount of solvent. As such, radiation curable inks have the advantages: the fact that the photochemical reaction which occurs in radiation curable ink is very rapid and, as such, there is almost no drying requirement; the absence of solvents means that there is no, or much less, release of VOCs (volatile organic compounds); and radiation curable inks have been found to be very wear-resistant, which is a particular advantage for a bank note. Ink systems, printing layers and features suitable for a banknote according to this embodiment are described below. Unique ink system Banknotes are produced using a chemical ink composition based on a number of different ink systems, the majority of which are based on air oxidation. More specifically, the majority of banknote inks are oil-based inks, which oxidize in the presence of air and metallic soaps to form cross-linked structures. There is also an increasing use of inks cured with actinic radiation, which requires additional equipment, such as UV lamps. The inks used for polymeric and hybrid substrates used in safety documents have a different chemical composition and usually involve crosslinking using a variety of curing chemical compositions, usually resulting in a high molecular weight, highly crosslinked polymer system. . The reason is that the inks used for traditional paper substrates are able to penetrate the fibers of paper substrates and therefore have relatively good adhesion to the substrate. With a polymeric substrate, traditional inks cannot penetrate the surface and, if used, the adhesion of the inks to the polymeric substrate would not be sufficient to provide a useful life for a bank note. Therefore, a highly cross-linked system is required for the ink to cross-link strongly to the polymeric substrate and provide high durability. The Guardian® substrate offers exactly this system with the ink used, also providing a suitable surface on which traditional Offset and Intaglio inks, as well as ink from other printing processes, can adhere. However, on banknotes using a Guardian® substrate, it has been observed that Offset and Intaglio inks on banknotes are more prone to wear than the white inks used to opacify the transparent polymer. More precisely, the Offset and Intaglio inks adhere more weakly to the opacifying white ink than the opacifying white ink adheres to the polymer substrate. There are a number of reasons for this difference in grip: 1. First, there is, most of the time, a period of time (greater than one day) between the time an opacified polymeric substrate for banknotes is produced and the time it is printed with additional processes . This is due, in part, to the need to harden and / or coalesce coatings of the substrate. During this time, not only does the surface area of the materials increase in molecular weight, but it also decreases in surface energy. These are desirable properties from the point of view of robustness and durability. This process, however, reduces the ability of the inks applied to the surface to penetrate and achieve total adhesion; 2. Second, the disparate nature of the chemical composition of the inks applied to the surface in the form of printed markings further reduces the adhesion between the surface of the material and the marking inks. 3. Third, the relatively low molecular weight of the crosslinked system of the marking ink relative to the surface ink results in that the marking ink is more flexible than the surface materials and is therefore more prone to wear compared to the surface material in the same environment. To avoid the problems mentioned above, banknotes are increasingly coated with a coating system with one or two layers per surface, after printing, so as to prevent the marking from wearing out too quickly. This process is expensive to implement and does not solve the problem but tends to minimize it. A hard coating on top of a relatively softer coating will stop certain types of wear but does not resolve all wear situations. For example, if a banknote is regularly crumpled, a hard coating will crack and expose the underlying softer coatings to wear. Consequently, one embodiment of the invention relates to a banknote in which at least one design layer, or a marking layer, and another printed layer have: at. Hansen Solubility parameters which suitably coincide; and or b. hardening (increased molecular weight) by at least one crosslinking mechanism, where, preferably, the crosslinking mechanism used is not completely completed between the application of successive layers of ink. In addition, an embodiment of the invention relates to a method of manufacturing a banknote, having inks described above, where the process of applying the inks is implemented as a process. online. Hansen's Solubility Parameters (HSP) were developed by Charles M. Hansen in his doctoral thesis in physics in 1967 (Hansen, Charles (1967), The Three Dimensional Solubility Parameter and Solvent Diffusion Coefficient and Their Importance in Surface Coating Formulation Copenhagen: Danish Technical Press) as a means of predicting whether one material will dissolve in another and form a solution. HSPs are based on the idea that that looks alike dissolves, where one molecule is defined to look like another if it binds to itself in a similar way. The ability of two polymers to entangle or entangle and, therefore, to adhere to each other, greatly depends on the importance of their 2 * resemblance. HSPs constitute suitable parameters for describing the resemblance of one polymer to another and therefore their adhesion power with one another. In particular, each molecule has three Hansen parameters, which are each generally measured in MPa 0 5 : ôd - The energy from the dispersion forces between the molecules δ ρ - The energy from the dipole intermolecular force between the molecules ô h - The energy from the hydrogen bonds between the molecules. These three parameters can be treated as coordinates for a point in a three-dimensional space known as the Hansen Space. The more two molecules are close to each other in this space in 2 Professor Steven Abbott, Practical Adhesion: https.7 / www.stevenabbott.co.uk / practical- adhesion / hsp.php three dimensions, the more they are likely to dissolve into each other. To determine if the parameters of two molecules (usually a solvent and a polymer) are within a certain range, a value called the radius of interaction (Ro) is given to the dissolved substance. This value determines the radius of the sphere in Hansen space and the center of the sphere is formed by the three Hansen parameters. To calculate the distance (Ra) between the Hansen parameters for two samples 1 and 2 in Hansen space, the following formula is used: Ra 2 = 4 (δά1-δό2) 2 + (δρΐ-δρ2) 2 + (δή1-δ ή2 ) 2 It can be seen from this equation that, if the three parameters of samples 1 and 2 are close, then Ra is small and their solubility / mutual compatibility is high, so that their mutual adhesion is high. If one or more values differ greatly, then Ra is large and mutual solubility is low and adhesion is low. The combination of this with the interaction radius gives the Relative Energy Difference (RED) 3 of the system: RED = Ra / Ro RED <1 the molecules are similar and will dissolve RED = 1 the system will partially dissolve RED> 1 the system will not dissolve. The Hansen solubility parameters of a typical Offset and Intaglio ink resin were analyzed and the following results were found: Sample dD dP dH Ray Adjustment Offset ink 18.22 13.52 20,82 6.7 0.983 Intaglio ink 18.63 10.51 22.59 6.5 1,000 It has been found, by successive approximations, several inks generally suitable for polymeric substrates. The Hansen solubility parameters of their resins were as follows: 3 See HSP Basics (https://www.hansen-solubilitv.com/HSP-science/basics.php), The HSP sphere (https://www.hansen-solubility.com/HSP-science/sphere.php) and / or the Hansen solubility parameter on Wikipedia (https://en.wikipedia.org/wiki/Hansen_solubilityjjarameter) Sample dD dP dH Ray Adjustment Var Polyester / Polyol 17.97 9.21 5.9 8.3 0.931 VMCH Vinyl Resin 17.76 10.76 6.59 6.2 0.948 VAGH Vinyl Resin 18.52 10.81 6.89 6.4 0.983 As can be seen, when comparing the Offset and Intaglio resins and the resins suitable for polymeric substrates, there is a significant difference in the hydrogen bonding parameter, hh (dH in the tables above). The difference in oh is around 15 between the Offset and Intaglio resins and the 5 resins suitable for polymeric substrates. The calculation of the Ra values for the resins tested gave the following values: Ra Offset Intaglio Polyester VMCH VAGH Offset 0 3.515836 15.53206 14.50249 15.17692 Intaglio 3.515836 0 16.75356 16.02559 16.70306 Polyester 15.53206 16.75356 0 1.709591 1.691922 VMCH 14.50249 16.02559 1.709591 0 1.034456 VAGH 15.17692 16.70306 1.691922 1.034456 0 The following RED values are obtained: RED Offset Intaglio Polyester VMCH VAGH Offset 0 0.540898 1.871333 2.339111 2.371394 Intaglio 0.524752 0 2.018501 2.584772 2.609853 Polyester 2.318218 2.57747 0 0.27574 0.264363 VMCH 2.16455 2.465475 0.205975 0 0.161634 VAGH 2.265212 2.569701 0.203846 0.166848 0 The use of Offset resin and polyester resin in the table of resins suitable for polymer substrates gives a Ra value of 15.6, which gives a RED, Ra / R 0 , of 15.6 / 6.7 = 2.32 and a clear indication that the two resins are not compatible and that adhesion would be poor. As such, in the broadest context, the embodiment of the present invention relates to a banknote having two or more layers of printed ink, at least one of which is a marking layer, each layer of ink being an ink having a RED (Relative Energy Difference) less than or equal to 1 compared to the other ink and, more preferably, less than or equal to 0.5. In some embodiments, at least one other of the printing layers is a touch layer, such as a paper touch layer or an improved touch layer, as described herein. Preferably, the inks have a hydrogen bonding parameter by 5 h Hansen solubility having a difference of less than 2.5. Another embodiment of the present invention relates to a bank note in which layers of marking ink have a RED (Relative Energy Difference) less than or equal to 1 compared to all the other layers of marking ink . Preferably, all of the labeling ink layers have a Hansen paramètre h solubility hydrogen bonding parameter having a difference of less than 2.5. Furthermore, an embodiment of the present invention relates to a banknote having a marking layer in which the ink has Hansen Solubility parameters having the following ranges: ôd - between 17 and 19, δρ - between 9 and 11, and oh - between 5 and 7. It will be understood that the Hansen Solubility parameters, and any corresponding RED value, of an ink, as described above, refer to the Hansen Solubility parameters of the relevant resin system of the ink, often called the binder. . All inks have other components added, such as pigments and other additives dispersed in the binder. Before being applied / printed, one or more solvents are also included in the ink, i.e. the binder is prevented from hardening by being dissolved in a solvent. However, the solvent evaporates during drying, leaving the binder and all other additives. These additives are often completely insoluble and therefore do not contribute to adhesion in the manner described above (for which reason they are dispersed in the binder). It is the solubility of the binder, and its relative solubility with the binders of other inks, which is measured and referred to when talking about Hansen Solubility parameters. This can be seen from the tables above, describing suitable resins. The table referring to Offset and Intaglio inks also refers to the resins of these systems. It is preferable that the process used to apply the ink layers be done on a continuous and in-line strip, so that the ink layers are applied quickly one after the other and the drying, or curing mechanism , implemented is not completely completed between applications of the ink layers. This results in increased adhesion of the ink layers, as there are more opportunities for the layers to dissolve into each other at the border, which increases adhesion. And this, independently of the curing mechanism, whether or not there is evaporation of solvent, polymerization by crosslinking or coalescence. Separate process steps for producing a banknote create print layers that have less opportunity to crosslink or dissolve into each other and that have greater adhesion, which results in benefits a bank note produced by the same printing system, as described above. Choosing an ink system with an RED less than or equal to 1 improves the adhesion characteristics, even when using disparate process steps, which can be separated in time by a considerable period of time . Coating A coating can provide one or more of a number of desirable characteristics to a banknote, in particular: 1. a paper feel, for non-paper substrates; 2. antistatic properties; 3. additional protection against wear for the characteristics it covers; 4. incorporation of any additional tactile features. A coating is known from prior art documents in the form of a protective coating, in particular paper banknotes which are often coated to increase their durability. However, the previous coatings were not of the same ink system, which is the case here, the advantages and differences of which are described above. Thus, for example, if the banknote has had printed layers applied by an intaglio printing pressure, then a transparent intaglio ink is applied. Such transparent ink is often called clear or transparent lacquer or lacquer. In addition, the coating described below has a number of additional features which are not described in the prior art. In one embodiment, a coating is created by adding particles to a transparent ink to give a feeling of touching paper. More specifically, a polymer film is typically very smooth and the inks applied to a polymer film reflect this smooth surface. The result is, for humans, a feeling of touch on a very smooth surface. The feeling of touch is one of the most common factors used to determine the quality and authenticity of a material. And this is especially true for banknotes. Therefore, reproducible touch surfaces add an additional barrier to counterfeiting. The majority of humans use paper banknotes that are fibrous, and relatively rough. The production of a polymer film having a paper touch surface is therefore desirable when it comes to banknotes. The particles used in this embodiment preferably have an average depth of 5 to 35 microns and have an aspect ratio between approximately 1 and 5, comparing the depth at the widest point of the particle but preferably a average depth of 15 microns and an average aspect ratio of 3. The particles are preferably particles of polyethylene and, in particular, poly (ethylene terephthalate) (polyester / PET), which can be shaped from so as to be non-spherical by forming fibers which are then sliced or cut into particles having aspect ratios greater than 1. Other materials can also be used, such as polypropylene, glass, ceramics, among other materials . The key component of particle retention is not the particle type but the ratio of binder depth to particle size. More specifically, encapsulation or semi-encapsulation tends to be more restrained. Particles which are softer, such as rubber-based particles, allow a softer feel, however polyester-based particles are preferred. It has been found that the average particle depth to ideal binder depth ratio is ideally in the range of 3: 1 to 7: 1, and preferably 5: 1. More specifically, if the average particle depth is 15 microns, a preferred binder depth is between 2 and 5 microns. Binder depths outside this range still provide a useful product, but either wear or tactility is reduced. It has also been found, by measurement, that a paper touch layer which reproduces an adequate resemblance to paper banknotes has a coefficient of note against note friction between 0.2 and 0.4 (both static and kinetic ), with a preferred value of 0.3 (static, although kinetic values do not vary greatly from static values). The ink binder (once cured) is typically at a depth of about 3 microns, so that the average projection of a particle from the ink is 12 microns. The composition of the coating is substantially from 5% to 20% by weight of particles relative to the transparent ink and, more preferably from 10% to 15%. It has been found, by experimentation, that this gives a suitable paper feel for a person with a sense of average touch. In another embodiment, a coating is created by adding conductive particles to a transparent ink, to increase the conductivity of the surface of the banknote and decrease the accumulation of static electricity. The conductive particles are preferably a fibrous conductive filler material consisting of a fibrous core material on which a conductive layer is formed, such as that which is described in the document WO1999010418A1, the content of which is described here by way of reference. The fibrous filler material to be used in the invention comprises a core material for which different inorganic or organic fibrous materials having an average length of 3 to 50 µm, an average fiber diameter of 0.01 to 5 µm and a ratio of from 3 to 100 are suitable. Examples of such usable materials are potassium tetratitanate fibers, potassium hexatitanate fibers, potassium octatitanate fibers, titanium dioxide fibers, monoclinic titanium dioxide fibers, borate fibers aluminum, magnesium borate fibers, alumina fibers, wollastonite, xonotlite, silicon nitride fibers, boron fibers, glass fibers, silica fibers, carbon fibers, cellulose fibers, polyester fibers and polyamide fibers. Among these, monoclinic titanium dioxide fibers and potassium hexatitanate fibers are particularly suitable. The fibrous conductive filler material for use in the present invention comprises such a fibrous core material and a conductive layer formed thereon and containing at least one tin oxide and one antimony oxide. The preferable properties of the particle are a fibrous core material on which a conductive layer is formed and containing at least one tin oxide and one antimony oxide. The fibrous conductive filler material has a volume resistivity of less than 100 µm, preferably 10 ' 2 to 10 Qcm, 5 to 100 parts by weight of tin oxide and 0.01 to 10 parts by weight of antimony oxide per 100 parts by weight of the core material usually being used for coating. Suitable fibrous conductive fillers are available from Otsuka Kagaku Kabushiki Kaisha under the trade name SFS. A coating containing conductive particles should preferably have a surface resistivity of less than 10 11 Ohms per square, preferably less than 10 10 Ohms per square. By providing a surface resistivity in this range, it is possible to prevent the accumulation of static electricity in banknotes and, in particular, in polymeric banknotes. The fibrous conductive filler described above is particularly preferred as conductive particles because it has been found to provide a surface resistivity which is independent of humidity. Other conductive particles provide surface resistivity which varies with humidity, which causes severe processing problems in dry environments due to the build up of static electricity on banknotes. The problem of the accumulation of static electricity is a real problem for banknote processing machines, such as automatic teller machines (ATMs). If static electricity can accumulate on the banknotes, then there may be a duplicate drive and / or jamming of the banknotes in the machine circuits. Surface resistivity could be appropriately determined by printing an ink including a specified percentage of particles, testing the resistivity and then iteratively adjusting the amount of particles in subsequent printing inks, until the value desired is reached. In addition to these oxides, an indium oxide, a cobalt oxide, etc., can also be suitably used. In this case, each or one of the additional oxides is used in an amount of from about 0.01 to about 10 parts by weight per 100 parts by weight of the core material. The average fiber length is 3 to 50 microns, an average fiber diameter of 0.01 to 5 microns, and an average aspect ratio of 3 to 100. The preferred average fiber length is substantially 4 microns, the preferred average diameter is substantially 0.2 microns and the preferred average aspect ratio is substantially equal to 20. A fibrous conductive particle, as described above, was initially discarded because it is not transparent and has a gray color. These characteristics make it suitable for use in non-transparent inks and not suitable for transparent applications. It has surprisingly been found that at preferred concentrations of 10% to 15% by weight in the transparent ink, preferably 12% (in the wet state, before evaporation of the solvents), the upper coating remains transparent and kept an appropriate resistivity. Although it is generally preferable that conductive particles are added on both sides of a bank note, this is not a requirement. The dissipation of static electricity can be sufficiently controlled by having the conductive particles only on one side. An even more surprising embodiment of the coating was found when the paper-touch particles described above as well as the fibrous conductive particles described above were provided in a transparent ink. It turned out surprisingly that transparency, paper feel and conductivity were maintained, despite the effect of the two different particles on the surface of the banknote. As such, a preferred embodiment of the coating consists of a transparent ink having 15% by weight of paper-touch particles and 12% by weight of the fibrous conductive particles, as described above. An example of such an ink is: • 18% of a resin suitable for use in engraving inks (such as TA24-548A resin from Hitachi Chemical); • 9% of crosslinking agent, such as isocyanates; polyaziridines; zirconium complexes; aluminum acetylketone; melamines; and / or carbodiimides; • 12% of fibrous conductive particles, as described above; • 15% of paper touch particles, as described above; • 46% of solvent, suitable for dissolving the resin and the catalyst, such as MEK (methyl ethyl ketone), acetone or ethyl acetate. Now let's look at Figure 3, which is a schematic representation of a close-up of the surface of a banknote in an area where a coating 70 has been applied and includes paper touch particles 72, and which shows in close-up fibrous conductive particles 74. The fibrous particles 74 substantially cover the surface of the coating 70, including the paper-touch particles 72. The fibrous conductive particles 74 do not interrupt the feeling of paper-touch offered by the coating and also do not significantly affect the transparency of the coating or the colors of previously applied printed layers. The paper touch particles do not interrupt the resistivity of the coating surface, nor do they significantly affect the transparency of the top coating. As such, a particularly surprising and advantageous coating or varnish is produced. Clearly, when the substrate used for a banknote is paper, then the combination of paper touch particles and conductive particles is not necessary to modify the touch of the substrate. Another embodiment of a suitable coating combines the coating described above with a tactile characteristic. More specifically, the other embodiment combines layers 62A and 66 of Figure 2A. It has been found that a paper touch ink composition, as mentioned above, can be used for both a paper touch layer and an improved tactile layer, either by printing the same ink in two. layers, one configured for a coating as described in relation to layer 62A and one configured for a tactile layer as described in relation to layer 66, that is, when it is printed using a unit of suitable printing, in the form of a single layer in which the ink is deposited at different thicknesses in different regions, depending on whether the coating is required or a tactile characteristic is required. For example, an intaglio engraving cylinder can be etched to deposit an overall paper touch coating on a bank note in first regions and, thicker tactile elements in second regions. The cylinder can be either double engraving, for example with a first engraving of the structures for the paper-touch coating everywhere on the first and second regions, then an engraving in the second regions only of deeper structures for the deposition of the tactile elements, or simply be engraved in the first regions for the paper touch coating and in the second regions for the tactile elements. Regions in which only a paper touch is provided will have a first thickness corresponding to the thickness or the coating weight chosen for the coating. For example, an appropriate thickness in the first region is between 1.5 microns and 8 microns (ignoring any projection of particles). Regions which are intended to be tactile elements, as described in connection with the following tactile security feature, can have an appropriate thickness of between 12 and 30 microns (although the thicker end of this range may be obtained only with certain ink technologies, such as UV, as will be described in more detail below). Another embodiment of the coating described above is provided with a different composition and ink system. In this embodiment, a radiation curable resin system, such as UV curable ink or electron beam curable ink, is used as the base resin. The percentage by weight of paper touch particles or fibrous conductive particles, when the ink is wet, does not change in an appropriate composition. For example, a coating composition based on a suitable UV curable ink is: • 73% UV curable ink, such as SunCure® ink from Sun Chemical; • 12% of fibrous conductive particles, as described above; • 15% of paper-touch particles, as described above. The composition can be modified, if necessary, by the addition of solvent, such as MEK, to obtain a viscosity of approximately 25 cP to 50 cP, but preferably 40 cP, or 23 seconds using of a Zahn cup n ° 2. Alternatively, the composition can be heated to obtain the same viscosities. It is well known that most UV curable inks cannot provide good adhesion to polymeric substrates, such as BOPP, without some form of promotion of additional adhesion. Suitable adhesion promoters include crosslinking agents such as isocyanates; polyaziridines; zirconium complexes; aluminum acetylacetone; melamines; and / or carbodiimides. A particularly suitable adhesion promoter is described in document WO1997027064. In addition, printing a solvent-based ink as a primer for a UV curable ink, such as composition ci3066434 on it (with or without tactile and conductive particles), also serves as an adhesion promoting layer. appropriate. Notably, the UV-based ink composition has a number of distinct advantages as discussed above in the Bank Note section. In particular, UV-based coatings are particularly resistant to wear. Let us now refer to Figure 2B, which shows a banknote 500 having a substrate 520 and marking layers 560. The marking layers 560 can be multiple layers of the same color or different colors. The substrate 500 can be any suitable substrate for printing a banknote, but the preferred substrate is a polymer and, in particular, an opacified polymer, having opacified particles in the mass of the substrate. A tactile layer 620, having a composition as described above, is present on the two faces of the substrate and has first regions 640 at a first thickness and second regions 650 at a second thickness. The first regions offer a paper touch on the surface of the banknote and the second regions offer a tactility similar to that offered by Intaglio printing (as described in more detail in relation to the tactile security feature below ). Importantly, this touch layer combination, offering two different types of tactility, can be printed in a single step, which reduces the required number of printing units and thereby the cost. Solvent-based coatings and UV-based coatings, whether used only as a coating or as a combination of coating and tactile elements, offer additional advantages in terms of ticket wear bank. In experimental tests, a TABER® Rotating Platform Abrasion Tester was used to measure the wear resistance, and is an intermediary for an accelerated wear test. Specifically, products that have greater wear resistance would be more wear resistant in actual use and would last longer. The TABER® Abrasion Tester test results are shown in the table below. Ticket description Number of cycles before fault Formulation of ink coatings Description of fault Ticket2000 Indonesian rupiahs (new, not in circulation, printed paper substrate in 2016). 60 Intaglio and Offset ink on a paper substrate. Intaglio and Offset ink used up to the paper substrate in certain regions (ink completely eliminated in approximately 50% of the region tested for wear). BOPP solvent-based coating substrate (Test sample - newly printed). 550 Solvent-based inks for drawing layer, solvent-based tactile coating (of the composition described above at a cured thickness of 3 microns). All inks with the same polymer chemical composition. Inks used up to the polymer substrate in certain regions (ink completely eliminated in approximately 50% of the region tested for wear). BOPP substrate UV coating (Test sample - newly printed). 1420 Solvent-based inks for drawing layer, solvent-based primer (of the composition described above but without particles with a cured thickness of 1.5 microns). All solvent-based inks having the same chemical composition, the UV-based touch layer (of the composition described above at a cured thickness of 5 microns). Used to the substrate in certain regions (ink completely eliminated in approximately 50% of the region tested for wear). The above wear samples were left in the TABER® Abrasion Tester machine until they had reached a condition which would typically require the withdrawal of a bank note from circulation. In this case, the criteria were that approximately 50% of the area subjected to the wear test had run out of ink in the drawing elements. As can be seen from the results, the solvent-based coating has more than 9 times the performance of the paper substrate and more than 23 times that of the UV coating. Although it may be possible to obtain different results for the wear of a banknote based on a paper substrate and that of the sample which was used, it is clear that the coatings as described here offer a much greater resistance to wear than that offered by the tested paper banknote and all the variances in terms of paper substrate will be minimal. Specifically, even if a paper banknote was able to do twice as well as the one that was tested, it would quickly fall below the wear resistance of the coating which is described here. It should be noted that an Intaglio print is typically in the range of 20 to 60 microns, and this thickness does not seem to help the wear resistance of the paper banknote. However, it has been found that the thickness of the coating described here has some relation to the wear resistance and can be adjusted accordingly. Applying a thinner coating will reduce wear resistance and applying a thicker coating will increase wear resistance. Since a banknote defect can occur for other reasons, such as tearing, an increase in wear resistance will result in reduced returns due to other types of defect. However, the thickness of the coating can be used to generate an expected life for the banknote, by measuring the wear resistance of existing banknotes and adjusting the thickness of the coating to a selected multiple of this. wear resistance. Touch security feature As mentioned above, a printing layer 66 of Figure 2A is a tactile printing layer. Tactile printing is carried out in the form of a selected design and is an integral part of a tactile security feature. The touch security feature provided is a pseudo feature Intaglio. More specifically, Intaglio printing achieves printing structures which are relatively deep (in the range of 20 to 150 microns) and has been used on banknotes for a considerable time, and the tactile security feature mimics this printing. . The depth of the Intaglio printing structures creates a special sensation on a bank note that the public recognizes, due to the irregular use of Intaglio printing. Therefore, if a banknote is to be created by another printing process, it is desirable to have a feature which presents an identical sensation to an Intaglio printing for the public. In this embodiment, and with reference to FIGS. 4A, 4B and 4C, there is provided a tactile security characteristic 80. The tactile security characteristic 80 comprises a printed marking layer 82 and a printed improved tactile layer 84. It it is preferred that the marking layer 82 and the enhanced tactile layer 84 are both printed using the same printing process. Preferably, they are printed in series on a printing press which is preferably a printing press by intaglio engraving, as illustrated in FIG. 1A. However, the tactile security feature as described herein is novel and inventive in itself, in that an improved feeling of tactileity is provided to a drawing, without requiring the use of Intaglio printing to print this drawing. Other advantages are obtained when the security feature is applied as part of the same process, as it offers an alternative to the need to use separate printing processes. This is of particular concern in the case of Intaglio printing for banknotes, since it is usually necessary that the sheets for banknotes, after having been printed by Intaglio, are not stacked at all, or are stacked with a minimum number of sheets, to allow time for the Intaglio print to dry / harden. If this is not done, the height advantage of the Intaglio printing may be lost because the weight of the sheet stack distorts the Intaglio printing. Therefore, the minimum time between printing and handling is at least three days. In addition, most of the Intaglio ink transfer is due to the pressure used to help this viscous ink leave the engravings. This pressure, up to 10 tonnes / in 2 , results in permanent embossing of the substrate. However, the modulus of elasticity of the polymer is much higher than that of paper and there is therefore a compromise between tactility, quality of the ink and handling problems, often to the detriment of the tactile effect on the polymer. Specifically, embossing the substrate can cause process problems in additional steps that may be required to produce a banknote, such as numbering or applying other security features or protective coatings. The marking layer 82 is printed in one or more desired colors and in a desired pattern which, in the case of Figure 4A, is the text 300. The improved touch layer 84 is applied in a design or pattern as shown in Figure 4B, which in this example is a pattern of dots or circles, generally in the form of text 300, overlapping / overlapping the drawing layer 82, as shown in Figure 4C. The shape 300 is therefore an improved tactile zone of the layer 84, the points of which constitute a sub-zone, which is printed on the underlying design of the marking layer 82. Although the preferred arrangement is that the enhanced tactile layer at least completely overlaps the design layer, some designs may not require this overlap and may only require that the enhanced tactile layer overlaps the design layer so that the improved tactile layer overlaps partially the drawing layer. The improved tactile layer 84 comprises a transparent ink or lacquer having a proportion of tactile particles added to the layer. The particles can be substantially spherical and have an average diameter between 5 and 70 microns, but preferably 20 microns. Suitable spherical particles include those produced by Microchem under the trademark Decosilk Art, which are acrylic particles. Particles made of other materials, as indicated in relation to the above paper touch layer, are also suitable for particles in the touch layer. However, the preferred particles are those described above in relation to the above coating, having a depth of 5 to 35 microns and an aspect ratio of between about 1 and 5, comparing the depth to the point wider of the particle but preferably an average depth of 15 microns and an average aspect ratio of 3 and, more preferably, a particle having at least one dimension which is greater than 150% of the smallest dimension and otherwise as described above in relation to the coating. To remove any doubt, the dots described in the touch layer 84 do not represent individual particles but each dot rather constitutes an ink dot containing particles. Each point therefore offers a tactility and the spacing between the points improves this tactility. This combination of marking layer and improved tactility layer creates a safety feature which, when handled, provides a sensation analogous to the fact that the design layer has improved tactility and, substantially analogous to the printed marking layer by a traditional Intaglio process. In particular, it is not necessary for the improved tactile layer to be printed immediately on top of the marking layer, there may be other layers between them, as long as it is still possible to see the layer clearly marking. It is preferred, however, that the enhanced touch layer is the last layer printed on the banknote, which provides the best touch. In the context of the banknote 50, it can be seen that the touch layer 66 is printed after the coating 62A. Therefore, it is preferable that the marking layer resemble traditional Intaglio printing styles, which are typically drawings made up of a series of lines, and sometimes known as intaglio printing. In some cases, Intaglio print styles include dots as well as lines. Therefore, an Intaglio printing style is a representation made up of lines and dots, in a way that could be engraved in an Intaglio printing plate. Consequently, the marking layer preferably comprises a drawing consisting of a series of lines and, possibly, of points. Let us now refer to Figure 5A, which presents a marking, or drawing element, printed 90 of traditional Intaglio style. The marking 90 is 5 a representation of the statue of Menelaus, of the marble sculpture Menelaus supporting the body of Patroclus, in the Loggia dei Lanzi, Florence, Italy. As can be seen, the characteristics of the Menelaus head have been recreated via the use of lines and dots, which could be used, if desired, to create an Intaglio printing plate. Instead, design 90 is used as the basis for creating an engraving on an intaglio cylinder to create a marking layer in a security document, preferably a banknote. In order to be able to be printed by an intaglio cylinder, the design 90 is converted in a known manner into an appropriate cell structure design which is then mechanically / chemically etched on an appropriate cylinder. The cylinder is then used in an intaglio printing press to print the design on a suitable substrate. As shown in Figure 5B, a drawing of an improved tactile layer 92 is then generated, which generally has ends which are not larger than the ends of the marking 90. The drawing of the improved tactile layer 92 includes a series of wavy vertical lines 94 and a series of drawing features 96. In this example, the drawing features 96 are representative of the face and helmet which are components of the drawing 90. The drawing of the enhanced tactile layer 92 is then used to create an intaglio printing cylinder, in a similar manner to that described above for marking 90, but taking into account that the ink will contain particles, to create a layer with improved tactility in the same security document as that of marking 90. For example, a method consisting in taking the particles into account consists in creating r cells on the intaglio cylinder which are large enough to retain one or more particles. The marking 90 and the improved tactile layer 92 are printed in register, as shown in FIG. 5C. The term printed in register is a term in the technical field of printing and, in this case, it simply means that the improved tactile layer covers the drawing layer enough for a user to associate the tactile layer with the drawing layer. . It will be understood that the layer with improved tactility is preferably transparent. However, it is possible to use an improved tactile layer, which is translucent, not completely transparent, or colored, as long as the marking layer 90 is visible to the extent that is required. In this preferred example, the enhanced tactile layer is printed with a transparent ink / lacquer which contains tactile particles which do not affect the visibility of the marking 90. Figures 5B and 5C show the improved tactile layer 92 in black for a better understanding and only as representation. The tactile particles are, as briefly mentioned above in connection with Figure 2A, preferably substantially spherical and have an average diameter of about 20 microns. Particle sizes suitable for this safety feature have an average particle size of 5 to 70 microns, depending on the degree of roughness that is desired. The particles can be spherical or aspherical but must be large enough in a relevant direction to provide a variance on the surface of the ink in which the particle is deployed during printing. For example, if aspherical particles are used, such as particles having a wafer-like shape, then the particles tend to orient themselves with the longest dimension parallel to the surface being printed. As such, the dimension of the wafer which is relevant is its depth, which must be large enough for a difference in depth to be created by comparison with the regions of the printed ink which do not contain particles. Suitable particles include platelet-like particles, having at least one dimension that is greater than 150% of the smallest dimension (usually depth, since the printing process tends to naturally orient platelet-like particles in this way, as mentioned above). Additionally, another embodiment of this tactile security feature includes the use of retroreflective, or semi-reflective, beads as tactile particles. The balls would have a size as indicated above, but have the safety characteristic that, when exposed to bright light, such as a camera flash, they reflect bright light, saturating the reflection of the drawing on which the marbles were printed. As such, taking a photograph of the safety feature with a camera, cellular mobile phone, or the like, results in a bright white area where the beads were printed, which tends to obscure the printed design. on which it is superimposed. Two distinct security aspects are thus obtained: first, a verification characteristic, which can be verified as an authentic security characteristic; and a copy-resistant feature, so that it is more difficult to electronically copy a bank note including such a tactile feature. As noted above, the touch security feature described here offers a number of advantages over traditional Intaglio printing, in particular it offers an equivalent touch security feature that can be produced faster, as it does not need to take account of the deformation of the printing characteristic, and without it being necessary for the printing step to be separated from other characteristics to be printed. A particular advantage lies in the production of this characteristic by intaglio printing, which has a higher yield than an Intaglio printing press. As such, any substrate which requires such a tactile security characteristic is suitable, whether the substrate is paper, polymer, a paper / polymer hybrid or another material. Combination of the above embodiments The above embodiments are described in context. However, each of the embodiments can be combined with one or more of the other embodiments. For example, a particularly advantageous bank note includes a combination of ink layers of a single ink system, a tactile security feature and a coating, as described above. As used in this document (including in the claims), the terms include, include, understand or include shall be interpreted as specifying the presence of the mentioned features, integers, steps or components, but does not exclude the presence of one or more other features, integers, steps or components, or groups thereof. It will be understood that the invention is not limited to the specific embodiments described in this document, which are provided by way of example only. The scope of the invention is as defined by the appended claims below.
权利要求:
Claims (61) [1" id="c-fr-0001] 1. A method of producing a plurality of banknotes including: supplying a substrate, in the form of a strip, to a printing press including a plurality of printing units of the same type of a printing process, in which the web will pass through each of the plurality of printing units, and at least a portion of the web is printed in a print pass; printing a printing layer on the substrate at each of the plurality of printing units, at least one of the printing layers being a marking layer and at least one of the layers printing layer being a tactile layer. [2" id="c-fr-0002] 2. The method of claim 1, wherein the substrate comprises a polymeric material. [3" id="c-fr-0003] 3. The method of claim 1, wherein the polymeric material includes polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), poly (ethylene terephthalate) (PET) ), biaxially oriented polypropylene (BOPP); or a composite of two or more of these materials. [4" id="c-fr-0004] 4. Method according to any one of claims 1 to 3, wherein the touch layer is a paper touch layer printed on the substrate, which offers a sensation substantially similar to that of a paper banknote. [5" id="c-fr-0005] 5. The method of claim 4, wherein the touch layer is a transparent or translucent paper touch layer. [6" id="c-fr-0006] The method of claim 4 or 5, wherein the paper touch layer includes an ink having tactile particles. [7" id="c-fr-0007] 7. The method of claim 6, wherein the touch particles have an average particle size of 5 to 35 microns in at least one dimension, and / or the touch particles have an aspect ratio of average particle size between substantially 1 and 5. [8" id="c-fr-0008] 8. The method of claim 6 or 7, wherein the paper touch layer contains substantially from 5% to 20% by weight of tactile ink particles, or substantially from 10% to 15%, and / or the tactile particles are made of one or a combination of polyethylene, polypropylene, glass, acrylic, polyurethane, ceramic or rubber. [9" id="c-fr-0009] The method according to any of claims 6 to 8, wherein the paper touch layer has an average particle depth to binder depth ratio in the range of 3: 1 to 7: 1. [10" id="c-fr-0010] 10. Method according to any one of claims 6 to 9, in which the paper touch layer is applied in a first thickness in first regions and a second thickness in second regions, the second regions offering improved tactility. [11" id="c-fr-0011] 11. Method according to any one of claims 6 to 10, in which the paper touch layer contains conductive particles. [12" id="c-fr-0012] 12. The method of claim 11, wherein the amount of conductive particles is appropriately determined so that the paper touch layer has a surface resistivity less than 10 11 Ohms per square. [13" id="c-fr-0013] 13. The method of claim 11 or 12, wherein the conductive particles are a fibrous conductive filler material which is a fibrous core material on which a conductive layer is formed, the conductive particles containing at least one tin oxide and one antimony oxide. [14" id="c-fr-0014] 14. The method of claim 13, wherein the particles of fibrous conductive filler material have an average length of 3 to 50 microns, and / or the particles of fibrous conductive filler material have an average diameter of 0.01 to 5 microns , and / or the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. [15" id="c-fr-0015] 15. A method according to any one of claims 11 to 14, wherein the conductive particles are provided in the paper touch layer in a concentration of substantially 10% to 15% by weight. [16" id="c-fr-0016] 16. The method of claim 1, wherein the marking layer, or an additional marking layer, includes a drawing element and the touch layer, or an additional touch layer, is an improved tactile layer, or includes regions with improved tactility, which is substantially transparent or translucent and which has at least one first improved tactile area imprinted substantially on the drawing element, so that the drawing element appears to have some tactility due to the first tactile zone improved, the design element and the first area have improved tactility together forming a safety feature. [17" id="c-fr-0017] 17. The method of claim 16, wherein the first improved tactile area has ends which are not substantially larger than the ends of the drawing element. [18" id="c-fr-0018] 18. The method of claim 16 or 17, wherein the first zone with improved tactility comprises a pattern of sub-zones with improved tactility, the subzones preferably being lines and / or points. [19" id="c-fr-0019] 19. A method according to any one of claims 16 to 18, wherein the improved tactile layer contains tactile particles. [20" id="c-fr-0020] 20. The method of claim 19, wherein the tactile particles have at least one dimension which has an average size of 5 to 70 microns. [21" id="c-fr-0021] 21. The method of claim 20, wherein the tactile particles have an average diameter of substantially 20 microns and / or are spherical. [22" id="c-fr-0022] 22. The method of claim 19, wherein the tactile particles have at least one dimension which has an average size of at least 150% of the average size of the smallest dimension. [23" id="c-fr-0023] 23. The method of claim 1, wherein each of the printing layers printed by the plurality of printing units is printed with an ink having a Relative Energy Difference, compared to any other ink of the printing layers , less than or equal to 0.5, or less than or equal to 0.3. [24" id="c-fr-0024] 24. The method of claim 23, wherein each of the inks has a Hansen solubility hydrogen bonding parameter, oh, having a difference of less than 2.5 compared to any other ink in the printing layers. [25" id="c-fr-0025] 25. The method of claim 1, wherein each printing layer is printed in line before the immediately preceding printing layer has completely hardened and / or coalesced, which has the effect that, where the printing layers overlap, the printing layers partially dissolve one inside the other. [26" id="c-fr-0026] 26. The method of claim 1, wherein each of the plurality of printing units is an intaglio printing unit. [27" id="c-fr-0027] 27. The method of claim 1, wherein the printing press comprises one or more additional printing units of a type of printing process different from the plurality of printing units, and the method further comprises printing a printing layer on the substrate at 5 level of additional printing units in the printing pass. [28" id="c-fr-0028] 28. The method of claim 1, wherein the additional printing unit is an inkjet printing unit and / or the printing layer is a single image and / or text on each banknote . [29" id="c-fr-0029] 29. The method of claim 1, wherein the substrate is treated so as to promote adhesion before printing, at least, a first printing layer. 30. The method of claim 1, further including the step of inspecting the web during the printing pass, including: taking an image of at least one of the printing layers; and quantifying the print quality and / or registering the print layer. 31. Bank note produced by the method according to claim 1. 32. Bank note having at least two marking layers or at least one marking layer and at least one tactile layer, each layer being printed with an ink having: a Relative Energy Difference, relative 25 with inks from the other layer or layers, less than or equal to 0.5, or less than or equal to 0.3; and / or Hansen Solubility parameters in the following ranges: 8d - between 17 and 19, δρ - between 9 and 11, and 6h - between 5 and 7. 33. The banknote of claim 32, wherein each of the inks [30" id="c-fr-0030] 30 has a Hansen solubility hydrogen bonding parameter, oh, having a difference of less than 2.5 compared to any other ink in said layers. [31" id="c-fr-0031] 34. The banknote of claim 32, wherein each of said layers is printed in-line before the immediately preceding printing layer has fully cured and / or coalesced, which has the effect that where the printing layers overlap, the printing layers partially dissolve one inside the other. [32" id="c-fr-0032] 35. The banknote of claim 32, wherein the substrate is a polymeric material. [33" id="c-fr-0033] 36. A banknote having a substrate having polymeric exterior surfaces, including a coating, which coating is a paper touch layer applied to at least one of the exterior surfaces, which provides a sensation substantially similar to that of a banknote. paper bank, the paper touch layer including tactile particles, to provide the paper touch, and the tactile particles being conductive and / or the paper touch layer including conductive particles, to improve the antistatic properties of the banknote [34" id="c-fr-0034] 37. Bank note according to claim 36, in which the tactile particles preferably have a depth of 5 to 35 microns, and / or the particles have an aspect ratio between substantially 1 and 5. [35" id="c-fr-0035] 38. The banknote of claim 36, wherein the tactile particles have, at least on average, a dimension in at least one direction which is greater than 150% of the smallest dimension. [36" id="c-fr-0036] 39. Bank note according to claim 36, in which the paper touch layer contains substantially from 5% to 20% by weight of tactile particles relative to the ink, or substantially from 10% to 15%. [37" id="c-fr-0037] 40. The banknote of claim 36, wherein the amount of conductive particles is appropriately determined such that the paper touch layer has a surface resistivity of less than 10 11 Ohms per square. [38" id="c-fr-0038] 41. A banknote according to claim 36, in which the conductive particles are a fibrous conductive filler which is a fibrous core material on which a conductive layer is formed, the conductive particles containing at least one tin oxide and one antimony oxide. [39" id="c-fr-0039] 42. The banknote of claim 41, wherein the particles of fibrous conductive filler material have an average length of 3 to 50 microns, and / or the particles of fibrous conductive filler material have an average diameter of 0.01 to 5 microns, and / or the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. [40" id="c-fr-0040] 43. Bank note according to claim 36, wherein the conductive particles are provided in the coating in a concentration of substantially 10% to 15% by weight. [41" id="c-fr-0041] 44. The banknote of claim 36, wherein the coating is an exterior coating. [42" id="c-fr-0042] 45. The banknote of claim 36, wherein the coating includes a UV curable ink. [43" id="c-fr-0043] 46. The banknote of claim 36, wherein the coating includes a solvent-based ink. [44" id="c-fr-0044] 47. Banknote having a coating, which coating is a transparent or translucent layer applied to the banknote which includes conductive particles. [45" id="c-fr-0045] 48. The banknote of claim 47, wherein the amount of conductive particles is appropriately determined such that the coating has a surface resistivity of less than 10 11 Ohms per square. [46" id="c-fr-0046] 49. The banknote of claim 47, wherein the conductive particles are a fibrous conductive filler material which is a fibrous core material on which a conductive layer is formed, the conductive particles containing at least one tin oxide and one antimony oxide. [47" id="c-fr-0047] 50. The banknote of claim 49, wherein the particles of fibrous conductive filler material have an average length of 3 to 50 microns, and / or the particles of fibrous conductive filler material have an average diameter of 0.01 to 5 microns, and / or the particles of fibrous conductive filler material have an average aspect ratio of 3 to 100. [48" id="c-fr-0048] 51. Bank note according to claim 47, wherein the conductive particles are provided in the coating in a concentration of substantially 10% to 15% by weight. [49" id="c-fr-0049] 52. Tactile security feature for a banknote including a printed design layer having a print depth of 5 microns or less, a printed touch layer, having tactile particles, printed on the design layer, the tactile layer providing an apparent tactility in the drawing layer. [50" id="c-fr-0050] 53. Tactile security feature for a banknote having a printed marking layer including a drawing element and a printed improved tactile layer, which has at least a first improved tactile zone overlapping the drawing element, so that the design element appears to have a certain tactility due to the overlap of the first zone with improved tactility, the design element and the first zone with improved tactility together forming the safety characteristic. [51" id="c-fr-0051] 54. The tactile security feature of claim 53, wherein a lateral extent of the first improved tactile area corresponds substantially to a lateral extent of the design element. [52" id="c-fr-0052] 55. The tactile security feature of claim 53, wherein the enhanced tactile layer contains tactile particles. [53" id="c-fr-0053] 56. The tactile security feature of claim 52 or claim 55, wherein the tactile particles have at least one dimension which has an average size of 5 to 70 microns. [54" id="c-fr-0054] 57. The tactile security feature of claim 56, wherein the tactile particles have an average diameter of substantially 20 microns, and, more preferably, are spherical. [55" id="c-fr-0055] 58. The tactile security feature of claim 52 or claim 55, wherein the tactile particles are 5 to 35 microns in size in at least one dimension. [56" id="c-fr-0056] 59. The tactile security characteristic according to claim 58, in which the tactile particles have an aspect ratio between substantially 1 and 5. [57" id="c-fr-0057] 60. The tactile security feature of claim 52 or claim 55, wherein the tactile particles have, at least on average, a dimension in at least one direction which is greater than 150% of the smallest dimension. [58" id="c-fr-0058] 61. The tactile security characteristic as claimed in claim 53, in which the layer with improved tactility is applied in a first thickness in first regions and a second thickness in second regions. [59" id="c-fr-0059] 62. Bank note according to claim 30, including the characteristics of a bank note according to claims 32 to 35 and / or claims 36 to 51. [60" id="c-fr-0060] 63. Bank note according to claim 62, having a tactile security feature as claimed in any one of claims 52 to 61. [61" id="c-fr-0061] 64. Printing press for producing a plurality of banknotes on a continuous substrate strip, the printing press including a plurality of printing units of the same type of printing process, the plurality of printing units comprising at least one printing unit configured to print a marking layer and at least one printing unit configured to print a touch layer on the substrate in the same printing pass.
类似技术:
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同族专利:
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引用文献:
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法律状态:
2019-05-23| PLFP| Fee payment|Year of fee payment: 2 | 2020-05-22| PLFP| Fee payment|Year of fee payment: 3 | 2020-05-29| PLSC| Publication of the preliminary search report|Effective date: 20200529 | 2021-05-20| PLFP| Fee payment|Year of fee payment: 4 |
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申请号 | 申请日 | 专利标题 AU2017901840A|AU2017901840A0|2017-05-17|A banknote, a method of producing a banknote, a coating for a banknote and a security feature for a banknote| AU2017901840|2017-05-17| 相关专利
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