JP2006297760A - Forgery-discriminating printed matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide printed matter, the forgery of which can be easily discriminated under the condition that the solvent resistance and wear resistance of a hologram pasted to a base material is improved and the peeling-off on purpose or by mistake of the hologram can be prevented from developing. <P>SOLUTION: In this forgery-discriminating printed matter, a hologram constituent layer is formed on the base material under the condition that printing with a highly solvent resistant ink is applied on the surface layer of the hologram constituent layer or on the surface layer of the hologram constituent layer in continuous with a portion with no hologram constituent layer therein. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an aspect of precious printed matter such as banknotes, passports, securities, gift certificates, and a method for producing the same.

  Conventionally, banknotes, passports, securities, gift certificates, cards, etc. have been attached with holograms to prevent counterfeiting. This is because the hologram is highly resistant to optical counterfeiting, for example, counterfeiting using a color copier or DTP (scanner, personal computer, printer, etc.).

  On the other hand, after forming the hologram constituent layer on the base material, if a continuous embossed pattern was formed on the part where the hologram constituent layer was formed and the part where it was not formed, the hologram constituent layer was peeled off after being issued as a product Even in such a case, an article that can identify whether the embossed pattern has been peeled before or after issuance has been proposed (see, for example, Patent Document 1).

  Furthermore, in the printed matter in which the hologram constituent layer is formed on the base material, when printing on the hologram constituent layer, by printing with the ink having low solvent resistance, when trying to peel off the hologram constituent layer using a solvent In addition, there has been proposed a printed matter that is known to have been peeled off because the ink film swells and dissolves, the color becomes thin, and the ink film oozes out onto the substrate (for example, see Patent Document 2).

Japanese Patent No. 3371560 JP 2002-019346 A

  The hologram attached to the base material has a problem that the chemical resistance and the abrasion resistance are inferior to the printed image printed on the base material by offset printing or intaglio printing. For this reason, there is a method of providing a transparent printing layer on the entire surface of the hologram layer for protection, but this is not an effective method because it reduces the optical characteristics of the hologram itself.

  In Patent Document 1, (1) intaglio printing is employed as a means for forming an embossed pattern. When an oxidation polymerization type intaglio ink is used in intaglio printing, the intaglio ink is, for example, acetone or xylene. Since it may dissolve in a strong solvent, both the intaglio ink and the hologram forming layer are peeled off, and as a result, only an embossed pattern remains. Since this embossed pattern cannot be confirmed as a color (no color), the identification method using only the embossed pattern is an observation from a specific angle, and only a limited person with knowledge can identify it. poor. (2) In the embossed pattern formed only by the printing pressure on the hologram constituent layer by intaglio printing, when the hologram is peeled off or peeled off, only the embossed pattern remains. Is scarce. (3) Since the hologram configuration layer has a general configuration, it is easily available to anyone and has a weak anti-counterfeiting power. That is, the invention relates to the discrimination when the hologram is peeled off for some reason, and is not a configuration for improving the durability of the printed material with the hologram attached thereto.

  In Patent Document 2, when the hologram constituent layer is peeled off, it can be easily discriminated, but the deterrence of the analysis for forging the peeled hologram foil is poor. That is, Patent Document 2 is also an invention relating to discriminability when the hologram is peeled off for some reason, and does not prevent forgery of the hologram itself.

  Therefore, in order to solve the above-mentioned problems, the hologram component layer is applied to a substrate and printed with a solvent-resistant ink on the hologram component layer, thereby protecting the hologram component layer and solvent resistance. Also, the friction resistance is improved, and it is possible to prevent the hologram constituent layer from being peeled off from the base material regardless of intention or negligence. Further, even if the hologram constituent layer is peeled off, it is difficult to remove the ink itself, and it is possible to check by the color of the ink.

  The present invention is a security printed matter in which a printed pattern is formed with an ink having high solvent resistance on at least a surface layer of the hologram constituting layer in a printed matter having a hologram constituting layer on a substrate.

  Furthermore, the present invention relates to a printed matter having a hologram constituting layer on a substrate, wherein a printed pattern having a continuous printing pattern formed of a solvent-resistant ink is formed on at least the surface of the hologram constituting layer and the surface of the substrate. .

  Furthermore, the present invention is the forgery discrimination printed matter, wherein the ink having high solvent resistance is an ultraviolet curing and oxidation polymerization combined ink.

  Furthermore, the present invention is the forgery discrimination printed matter, wherein the ink having high solvent resistance is an ultraviolet curable ink.

  In the invention of Example 1, solvent resistance and friction resistance were improved by protecting the surface layer of the hologram constituent layer by forming a printed pattern with an ultraviolet curing and oxidative polymerization combined intaglio ink. Thus, even when the hologram constituent layer is to be peeled off with a solvent or the like, the ultraviolet curing and oxidation polymerization combined use intaglio is formed even if an unprotected hologram constituent layer is peeled off, formed with the ultraviolet curing and oxidation polymerization combined use intaglio ink. Since the printed pattern formed and protected with ink is difficult to peel off, it can be confirmed by the color of the intaglio ink combined with ultraviolet curing and oxidation polymerization, and the distinguishability can be improved. Moreover, since the intaglio ink combined with ultraviolet curing and oxidative polymerization can form the intaglio ink high in the vertical direction with respect to the paper, it has a tactile sensation even when touched with a finger and can impart double discrimination. Moreover, the forgery prevention effect was also improved by using a hologram constituent layer having a vapor deposition part and a non-vapor deposition part.

  In the invention of Example 2, solvent resistance and friction resistance are improved by protecting the surface of the hologram constituting layer and the surface of the paper by forming a printed pattern with an intaglio ink combined with ultraviolet curing and oxidation polymerization. I let you. In addition to the effects of the first embodiment, it can be identified by a continuous print pattern and is excellent in design.

  In the invention of Example 3, the solvent resistance and the friction resistance were improved by protecting the surface of the hologram constituting layer by forming a printed pattern with an ultraviolet curable offset ink. Other effects are the same as those of the first embodiment except for identification by tactile sensation.

  In the invention of Example 4, the solvent resistance and the friction resistance were improved by protecting the hologram constituting layer and the paper surface layer by continuously forming a printed pattern with an ultraviolet curable offset ink. Other effects are the same as those of the second embodiment except for identification by tactile sensation.

  Hereinafter, the printed matter according to the present invention has a metallic luster portion (hereinafter referred to as “deposition portion”) in which aluminum is vapor-deposited on a base paper, and a transparent portion (hereinafter referred to as “non-deposition”) in which aluminum is not deposited. It can be realized by forming a hologram forming layer composed of “part”) and printing using an ultraviolet curable and oxidative polymerization combined intaglio ink, and an ultraviolet curable and oxidative polymerization combined screen ink or ultraviolet curable offset ink. Example 1 is an example of printing on the surface layer of the hologram forming layer by intaglio printing using ultraviolet curing and oxidation polymerization combined use intaglio ink. Example 2 is an example in which the surface of the hologram forming layer and the surface of the paper were printed by intaglio printing using ultraviolet curing and oxidation polymerization type intaglio ink. Example 3 is an example in which the surface layer of the hologram forming layer was printed by offset printing using an ultraviolet curable offset ink. Example 4 is an example in which UV curable offset ink is used for offset printing on the surface of the hologram forming layer and the paper surface. In addition, the ultraviolet curing and oxidation polymerization combined use intaglio ink by the intaglio printing, the ultraviolet curing and oxidation polymerization combined use screen ink by the screen printing and the ultraviolet curing offset ink by the offset printing may be combined. In addition, the printing pattern printed with the UV curable and oxidation polymerization combined intaglio ink, the ultraviolet curable and oxidation polymerization combined screen ink and the UV curable offset ink may be appropriately selected from letters, numbers, marks, patterns, patterns, etc. . Further, the entire surface of the hologram constituent layer may have a metallic luster by depositing aluminum. Furthermore, the shape of the hologram forming layer may be appropriately selected from a spot type, a stripe type, a thread type, and the like. The substrate may be paper, plastic plate, plastic sheet, film, cloth or the like.

  FIG. 1 shows an aspect of a gift certificate 1. First, a spot-type hologram constituent layer 3 is pasted on a sheet 2 as a base material. The hologram constituent layer 3 is a demetalized hologram and is composed of a vapor deposition portion 3A and a non-vapor deposition portion 3B. For this reason, the vapor deposition part 3A has a metallic luster, but the non-vapor deposition part 3B is transparent. The hologram constituting layer 3 is applied by a method of applying a hologram by reading a positioning mark (also referred to as a register mark) (not shown) of the hologram foil 4 having a plurality of hologram designs optically and affixing it to the paper at a fixed position. It is desirable to use a machine.

  Usually, in the pasting machine, first, as shown in FIG. 2, the hologram foil 4 having the hologram constituting layer 3 is arranged above and in the vicinity of the sheet 2. The hologram foil 4 includes a base film A, a release layer B, a protective layer C, and an emboss layer D (including a vapor deposition portion 3A [aluminum portion] and a non-vapor deposition portion 3B [a portion not including aluminum]) from the upper layer. It consists of a masking layer E and an adhesive layer F. For the protective layer C and the adhesive layer F, transparent materials are used, and an acrylic resin, an acrylate resin, a urethane resin, or the like is appropriately selected. The adhesive F becomes a hot melt agent. The embossed layer D is formed by depositing aluminum at 500 to 1000 mm, and the deposited portion 3A is protected by the masking layer, so that the aluminum remains in the same shape as the masking layer, but the non-deposited portion 3B is made of an alkaline solvent. Aluminum is removed and it becomes transparent. Further, the embossed pattern D is a fine concavo-convex structure, and is preferably a relief hologram suitable for mass production (a configuration in which the shading of the interference fringes is replaced with concavo-convexities on the surface).

  Next, as shown in FIG. 3, only the hologram component layer 3 is attached to the paper 2 at a high pressure by the high-temperature stamp H located above the paper 2 and the hologram foil 4. At this time, the hologram constituent layer 3 is embedded in the paper layer of the paper because it is applied at a high pressure. Next, as shown in FIG. 4, the paper 1 affixed to the hologram constituting layer 3 was printed with intaglio ink on the paper 2 with a printing pattern necessary for the paper 2 by an intaglio printing machine (not shown). In FIG. 4, the necessary print pattern is printed on the sheet 2 with a line pattern 5 on the surface layer of the 10000 (fee), gift certificate (product name), human image (design), and hologram constituent layer 3. On the other hand, in FIG. 5, characters 6 are printed instead of the line pattern 5 of FIG. 4, but characters, numbers, marks, patterns, patterns, etc. may be appropriately selected as patterns to be printed.

  In addition, the intaglio ink uses a UV-curing and oxidation polymerization combined intaglio ink in which the surface of the intaglio ink film is dried by ultraviolet irradiation, and the inside of the intaglio ink film is naturally dried by oxidation polymerization. It is desirable to use the intaglio ink and the preparation method described in the item. The intaglio ink is composed of an ultraviolet curable composition (resin liquid / photopolymerization initiator), an oxidative polymerizable composition (resin liquid / drying agent / polymerization inhibitor), a pigment (colored pigment), and the like. Just do it. Further, a printing machine for intaglio printing needs to have a mechanism capable of irradiating ultraviolet rays while transporting the paper to the paper discharge unit immediately after intaglio printing. The intaglio image line depth of the intaglio plate surface at this time is 20 to 120 μm, The print line width is preferably 20 to 300 μm.

  6 (a) and 6 (b) are enlarged views of the hologram constituent layer 3 of FIG. 4 in FIG. 6 (a) and enlarged views of the hologram constituent layer 3 of FIG. 5 in FIG. 6 (b). It is an example and both are the examples comprised by the vapor deposition part and the non-vapor deposition part. It is desirable to form the non-deposited portion 3B along the outer periphery of the hologram constituting layer 3 and to form the deposited portion 3A inside thereof. Further, the vapor deposition portion 3C is a positive character or a positive pattern in which the visible information is made of aluminum, and conversely, the non-vapor deposition portion 3D is a negative character or a transparent character in which the surrounding of the visible information is aluminum and the visible information is transparent. In terms of prevention of counterfeiting, it is desirable that the visible information is reduced or made finer. Moreover, what is necessary is just to select a character, a number, a mark, a design, a pattern, etc. as visible information suitably. As a method for applying an intaglio printing image line of the hologram constituting layer 3, a horizontal line is formed on the surface layer of the hologram constituting layer 3 in FIG.

  Example 2 is the same as the structure of Example 1 except for the arrangement of line symbols 7 and characters 8 by intaglio printing as shown in FIGS. As for the line pattern 7 and the character 8, a continuous printing pattern was printed on the surface layer 3 of the hologram constituting layer and the surface layer 2 of the paper with the UV curing and oxidation polymerization combined use intaglio ink. According to this configuration, when the hologram constituent layer 3 is not issued for some reason, it can be confirmed by the remaining line pattern 7 or the PRINT (character) 8 on the surface layer of the paper 2, so that the discriminability is further improved. 9 (a) and 9 (b) are enlarged views of the hologram constituent layer 3 of FIG. 7 in FIG. 9 (a) and enlarged views of the hologram constituent layer 3 of FIG. 8 in FIG. 9 (b). In this example, the configuration is the same as that of the first embodiment.

  FIGS. 10A and 10B are examples in which a printing pattern is formed on the hologram constituent layer 3 surface and the paper surface layer 2 along the outer periphery of the hologram constituent layer 3 by using ultraviolet curing and oxidative polymerization combined intaglio ink. Yes, the configuration is the same as in the first embodiment. FIG. 10A shows a straight line formed continuously, and may be a curved line, a broken line, a dotted line, or a non-continuous line. FIG. 10B shows a character formed, and a number, a mark, a pattern, a pattern, or the like may be appropriately selected instead of the character.

(Comparative example)
As a comparative example, a comparison was made with a printed material having the structure of the gift certificate 1 described in Example 2, except that an intaglio-printed oxidation polymerization type intaglio ink was used. As a result, when the immersion test and the friction test were performed in a solvent such as acetone and xylene, the use of the UV curing and oxidation polymerization type intaglio ink for the intaglio ink was superior in both solvent resistance and friction resistance. For this reason, it was able to be confirmed by the color of the intaglio ink combined with ultraviolet curing and oxidation polymerization on the surface layer of the hologram constituting layer 3. This is because the crosslinking density is higher than that of the oxidation polymerization type intaglio ink because of the large number of functional groups of the acrylate which is a photopolymerization initiator for promoting curing by ultraviolet rays. In addition, as shown in FIG. 11, when the intaglio ink is an ultraviolet curing and oxidation polymerization combined use intaglio ink 9 and an oxidation polymerization intaglio ink 10, the ultraviolet curing and oxidation polymerization combined use intaglio ink 9 is UV after printing. Since the intaglio ink film can be solidified in a direction perpendicular to the paper 2 and the hologram constituent layer 3 in order to instantly harden the intaglio ink film, the intaglio ink on the surface of the hologram constituent layer 3 (for example, line pattern 5 or PRINT ( When touching the character 6), the ultraviolet curing and oxidation polymerization combined use intaglio ink 9 has a sense of unevenness and a rough tactile sensation. Moreover, since the hologram constituent layer 3 is composed of a vapor deposition portion and a non-vapor deposition portion, the anti-counterfeit resistance is also improved.

  Example 3 is the same as the structure of Example 1 except that intaglio printing is performed by offset printing. For offset printing, UV curable offset ink is used. The ultraviolet curable offset ink is composed of an ultraviolet curable composition (resin liquid / photopolymerization initiator) and a pigment (colored pigment), and may be mixed in an appropriate ratio. Furthermore, a printing machine that performs offset printing needs to have a mechanism capable of irradiating ultraviolet rays while transporting a sheet to a paper discharge unit immediately after offset printing.

  Example 4 is the same as the structure of Example 2 except that intaglio printing is performed by offset printing. The ink, printing method, and printing machine used for offset printing are the same as in Example 3.

It is explanatory drawing which showed the embodiment of the present Example 1. FIG. It is explanatory drawing which showed the embodiment of the present Example 1. FIG. It is explanatory drawing which showed the embodiment of the present Example 1. FIG. It is explanatory drawing which showed the embodiment of the present Example 1. FIG. It is explanatory drawing which showed the embodiment of the present Example 1. FIG. It is explanatory drawing which showed the embodiment of the present Example 1. FIG. It is explanatory drawing which showed the embodiment of the present Example 2. FIG. It is explanatory drawing which showed the embodiment of the present Example 2. FIG. It is explanatory drawing which showed the embodiment of the present Example 2. FIG. It is explanatory drawing which showed the embodiment of the present Example 2. FIG. It is explanatory drawing which showed the present Example and the comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gift certificate 2 Paper 3 Hologram component layer 3A Evaporation part 3B Non-evaporation part 4 Hologram foil 5, 6, 7, 8 Print pattern 9 Intaglio ink combined with ultraviolet curing and oxidation polymerization 10 Oxidation polymerization intaglio ink A Base film B Release layer C Protective layer D Embossed layer E Aluminum layer F Masking layer G Adhesive layer H Stamp

Claims (4)

A printed matter having a hologram constituent layer on a substrate, wherein at least a surface of the hologram constituent layer has a printed pattern formed of a highly solvent-resistant ink. A printed matter having a hologram constituent layer on a base material, wherein at least a surface pattern of the hologram constituent layer and a surface layer of the base material are formed with a printed pattern continuous with ink having high solvent resistance, . 3. The forgery discrimination printed matter according to claim 1, wherein the ink having high solvent resistance is an ultraviolet curing and oxidation polymerization combined ink. 3. The forgery discrimination printed matter according to claim 1, wherein the ink having high solvent resistance is an ultraviolet curable ink.

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