JP5067568B2 - Printed matter - Google Patents

Description

  The present invention relates to printed matter such as securities, lotteries, passports, identification cards, and the like, and more particularly, to a printed matter combining a metal foil and pearl printing that are difficult to reproduce by a color printing machine or the like.

  Recently, copying machines using electrophotographic technology have become widespread, and it has become possible to easily copy printed matter using this. In particular, if an image input by a digital camera or a flatbed scanner is processed by a personal computer and an ink jet printer or a color digital copying machine is used, even a precise multicolored copy can be easily produced. For this reason, various printed materials have been proposed for which counterfeiting measures such as copy prevention have been taken for securities, passports, and the like.

  However, in many cases, the authenticity determination of a printed matter with anti-counterfeiting measures requires the use of a special appraisal device or a skilled appraiser. Therefore, in the case of securities, lottery tickets, passports, identification cards, etc. with many types and a wide range of distribution, printed matter that must rely on special appraisal devices or skilled appraisers is not practical, There is a demand for a printed matter that can be easily and instantly determined by ordinary people.

As a printed matter that is difficult to be duplicated by a copying machine and can be easily and instantly determined by a general person, for example, a technology provided with a metal foil or a hologram foil or a technique using pearl printing has been put into practical use.
Metal foils and hologram foils are glossy and have a beautiful appearance, and can attract a lot of attention. Therefore, they have high design value and are used in many printed materials. Furthermore, since the light is specularly reflected, the copy using the electrophotographic technology becomes black, so it is often used for the purpose of preventing forgery.
In pearl printing, if the pearl pigment is discolorable, the color of the pearl printing area changes depending on the viewing angle, so printing with high design can be performed, and copying using electrophotographic technology can change the color. Since it is difficult to reproduce, it is also used to prevent forgery of printed matter.

However, since it is relatively easy to obtain the same or similar materials for metal foil, it is easy to imitate designs such as securities using the same or similar materials.
Hologram foil is harder to counterfeit than metal foil, but with the progress of today's structural analysis technology and embossing technology, the reproduction of hologram foil interference fringes is becoming easier than before, and anti-counterfeiting technology with hologram foil alone Is falling.

Patent Document 1 discloses a laminate in which hologram foil and pearl printing are combined. This laminate has a structure in which a pearl print layer is laminated on a hologram and is used as a seal for confirmation of opening. This laminate is used for preventing forgery as a seal for confirmation of opening because the pearl print layer is easily peeled off from the hologram. That is, when the seal for opening confirmation is opened, the pearl print layer is easily peeled off from the hologram, so that the opening of the seal can be easily confirmed. Moreover, the thing of the structure which laminated | stacked the pearl print layer and the protective layer on the hologram is shown so that a pearl print layer may peel reliably when a seal | sticker is opened.
JP 2003-58055 A

  Unlike seals for opening confirmation, securities, lotteries, passports, identification cards, etc. are required not only to be forged by copying but also to have excellent durability. Durability is required because securities, lottery tickets, passports, identification cards, etc. are often used for reading machines in the distribution process. Because it will disappear.

However, since pearl printing laminated on hologram foil or metal foil is easily peeled off from hologram foil or metal foil, pearl printing is combined with hologram foil or metal foil, securities, lotteries, passports, identification cards, etc. It is not practical to use it for its durability.
Further, since the pearl printing applied to the hologram foil or the metal foil covers the surface of the hologram foil or the metal foil to become an opaque layer, the mirror effect that is a merit of the metal foil is hindered. That is, when pearl printing is used in combination with a hologram foil or metal foil, it is difficult to make use of the characteristics of both metal foil and pearl printing, and there is a problem that design restrictions are added.

  In view of the above problems, an object of the present invention is to provide a printed matter excellent in design and durability utilizing both features by combining hologram foil or metal foil and pearl printing.

The printed matter according to the present invention has an anchor layer, a pearl print layer, and an overcoat layer sequentially laminated on a metal foil layer provided on a substrate, and the anchor layer and the overcoat layer are bonded at least partially. It is characterized by having.
In the following, in this specification, the metal foil layer is not only a monochromatic metallic luster such as a gold foil or a silver foil, but also an interference fringe like a hologram foil, and a hologram image is formed by light interference. It also includes a recycled metal foil layer.
In the printed matter of the present invention, the metal foil layer is entirely or partially provided on the substrate, and the anchor layer, the pearl print layer, and the overcoat layer are sequentially laminated on the metal foil layer entirely or partially. In addition, the overcoat layer preferably covers the pearl print layer and adheres to the anchor layer.

In addition, the anchor layer, the pearl print layer, and the overcoat layer contain a high molecular polymer, and it is preferable that the high molecular polymers in at least two layers of each layer include the same or at least one type of the same component. For example, the polymer polymer of the anchor layer and the polymer polymer of the pearl print layer or overcoat layer, and the polymer polymer of the pearl print layer and the polymer polymer of the anchor layer or overcoat layer, for example. More preferably, the polymer polymer of the pearl print layer and the overcoat layer is the same polymer as the anchor layer or at least one type of the same component.
Moreover, it is preferable that the anchor layer, the pearl print layer, and the overcoat layer laminated on the metal foil layer having a specularity are transparent to the extent that the specularity is not impaired.

With the above-described structure, even if the pearl print layer is combined with the metal foil layer, the pearl print layer does not peel from the metal foil, and a printed matter having excellent durability can be obtained. In addition, the pearl print layer on the metal foil layer can be made to exhibit pearl luster and color changes while maintaining the metal luster and mirror effect of the metal foil, thus taking advantage of the design advantages of the metal foil. A variety of printed materials can be obtained.
In addition, since it is a printed matter that makes use of metallic luster and pearl luster, ordinary people can easily determine authenticity instantly.
Furthermore, since the pearl printing layer is covered with the overcoat layer, the interference scale powder used in the ink for pearl printing is not exposed on the surface of the pearl printing layer. For this reason, there is an advantage that even if the number of securities or the like is counted by the machine, the machine is hardly damaged.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing an embodiment of a printed material according to the present invention. The printed material 1 is formed by sequentially laminating a metal foil layer 11, an anchor layer 12, a pearl printing layer 13, and an overcoat layer 14 on a substrate 10, and the overcoat layer 14 includes a pearl printing layer 13. It has a structure of covering and adhering to the anchor layer 12 at least partially.

  The base material 10 can be used by selecting appropriate materials such as securities, lottery tickets, passports, identification cards, etc., for example, fine paper, art paper, coated paper, Japanese paper, various laminated papers, and various other fibers. And leather.

As described above, the metal foil layer 11 is not only a layer made of a foil having a monochromatic metal luster such as a gold foil or a silver foil, but also has an interference fringe like a hologram foil, and reproduces a hologram image by light interference. It also includes a layer of foil. In general, a release agent such as wax or silicone is generally applied to the surface of the metal foil or hologram foil.
The metal foil layer 11 may be provided so as to cover the entire surface of the substrate 10, or the metal foil layer 11 may be partially provided on the substrate 10 as shown in FIG. 2.

FIG. 2 shows an example of securities having the printed matter 1 of the present invention. A metal foil layer 11 is partially provided on the substrate 10, and characters “KP GIFT CARD” are printed across the metal foil layer 11.
The metal foil layer 11 can be formed by, for example, pressing a gold foil, a silver foil or a hologram foil on a desired portion of the substrate 10 in a flat or halftone dot pattern using a flat pressure plate or a cylinder plate.

  The anchor layer 12 may be a single layer or a multilayer, and the material is not particularly limited, but it is preferable to use a highly transparent polymer. As the polymer, a single molecular polymerization resin or copolymer resin such as a thermoplastic resin or a thermosetting resin can be used. For example, a polystyrene resin, a polyester resin, an acrylic resin, a silicone resin, a fluororesin , Polyamide resin, polyvinyl alcohol resin, polyurethane resin, polyolefin resin, polycarbonate resin, polysulfone resin, polyester resin, vinyl chloride-vinyl acetate copolymer resin. These resins may be used alone or in combination.

  These polymer polymers are blended with a pigment, a solvent, and the like to prepare a solvent-based ink for the anchor layer. If necessary, the polymer is mixed with a diluting solvent and applied onto the metal foil layer 11 to thereby form the anchor layer 12. Form. The dilution solvent is added according to the printing suitability of the solvent-based ink for the anchor layer. However, the solvent-based ink for the anchor layer: dilution solvent is preferably in the range of 100: 0 to 30 by weight ratio. When the weight ratio of the dilution solvent exceeds 30, it is not preferable because the adhesive existing under the metal foil layer 11 is dissolved and the adhesive force between the metal foil layer 11 and the substrate 10 is weakened. The application to the base material 10 is performed on the entire surface or a part of the metal foil layer 11 in addition to the gravure printing method, the screen printing method, the flexographic printing method, various commonly used printing methods, or a combination of these printing methods. It can be carried out.

  The anchor layer 12 is for preventing peeling between the pearl print layer 13 and the metal foil layer 11, and has a layer thickness of about 10 to 30 μm, preferably about 15 μm. If it is thinner than 10 μm, it is difficult to maintain the adhesiveness, and the anchor layer 12 is easily peeled off from the metal foil layer 11 by friction or the like, which is not preferable. If it exceeds 30 μm, the printed material 1 becomes thick overall, which is not preferable.

  In addition, by providing the anchor layer 12 under the pearl print layer 13, the pearl print layer 13 that exhibits pearl luster and color change and does not hinder the mirror effect of the metal foil layer 11 can be formed. it can. By maintaining both the pearl luster and color change and the specular effect, it is possible to enrich the design variations of pearl printing and improve the appearance of securities and the like.

  The color of the anchor layer 12 may be colored as long as the transparency can be maintained. In this case, the amount of the dye or pigment used in the solvent-based ink for the anchor layer is desirably 20% or less by weight. Moreover, although organic solvents, such as toluene, xylene, cyclohexanone, methyl ethyl ketone, ethyl acetate, can be used for a solvent, it is not limited to these. The diluent solvent to be blended with the solvent-based ink for the anchor layer may be appropriately selected from xylene, methyl isobutyl ketone, cyclohexanone and the like that are generally used.

The pearl print layer 13 is a layer formed by mixing a transparent ink with a pearl pigment obtained by coating titanium oxide or iron oxide with mica or metal powder, and printing it on the anchor layer 12 in the form of characters or designs. .
The pearl pigment is blended with a polymer, a colorant, a solvent, and the like to prepare a solvent-based ink for a pearl print layer, and is printed on the anchor layer 12 together with a dilution solvent to form the pearl print layer 13. The dilution solvent is added according to the printing suitability of the solvent-based ink for the pearl printing layer, and may be used in an amount corresponding to the printing conditions such as the printing method. For printing, solvent-based ink is applied to the entire surface or part of the anchor layer 12 in addition to gravure printing, screen printing, flexographic printing, various commonly used printing methods, or a combination of these printing methods. Can do.

  Here, as the high molecular polymer, a transparent single molecular polymerization resin or a thermoplastic resin or a thermosetting resin which is a copolymer resin can be used. For example, polystyrene resin, polyester resin, acrylic resin, silicone Resins, fluororesins, polyamide resins, polyvinyl alcohol resins, polyurethane resins, polyolefin resins, polycarbonate resins, polysulfone resins, polyester resins, and vinyl chloride-vinyl acetate copolymer resins are used as components. These resins may be used alone or in combination. Moreover, although organic solvents, such as toluene, xylene, cyclohexanone, methyl ethyl ketone, ethyl acetate, can be used for a solvent, it is not limited to these. A colorant can be mix | blended to such an extent that the transparency of the pearl printing layer 13 is not inhibited, A kind is not specifically limited, A general pigment and dye can be selected and used. The diluent solvent to be blended with the solvent-based ink for the pearl print layer may be appropriately selected from xylene, methyl isobutyl ketone, cyclohexanone and the like that are generally used.

  Since the pearl print layer 13 includes a scale-like pearl pigment coated with metal powder, when the pearl print layer 13 is formed on the metal foil layer 11, a portion of the portion where the scale and the metal foil layer 11 are in contact with each other. Since the adhesive strength is weakened, the pearl print layer 13 and the metal foil layer 11 are easily peeled off. However, by providing the anchor layer 12 between the pearl print layer 13 and the metal foil layer 11, it is possible to prevent the pearl print layer 13 from peeling from the metal foil layer 11. This is presumably because the pearl print layer 13 is formed so as to wrap the scaly pearl pigment in contact with the anchor layer 12, so that the scaly pearl pigment does not contact the metal foil layer 11.

  In order to further enhance the prevention of peeling of the pearl printing layer 13 from the metal foil layer 11, the component of the polymer polymer of the solvent-based ink for the pearl printing layer and the component of the polymer polymer of the solvent-based ink for the anchor layer are the same or It preferably contains at least one identical component. When each polymer component is a mixture of a plurality of resin components, it is sufficient that at least one type of the same component is included, and the types and mixing ratios of all the resin components are the same or approximate. More preferably. Adhesiveness is enhanced when each high molecular polymer contains at least one type of the same polymer component or the same component.

  When the pearl printing layer 13 having a mirror effect and having a pearly luster is formed on the metal foil layer 11, the pearl printing layer is different depending on the particle size and amount of the pearl pigment used and the kind of the polymer polymer. This can be achieved by making the thickness thinner than the normal thickness. When the anchor layer 12 is not provided, it is necessary to increase the layer thickness of the pearl print layer in order to maintain the adhesion with the metal foil layer 11. However, this thick layer hinders the mirror effect of the metal foil layer 11. However, since the anchor layer 12 is present, the pearl printed layer 13 is formed so as to be wrapped in the transparent anchor layer 12, so that the pearl printed layer does not weaken the adhesiveness to the metal foil layer 11. The layer thickness of 13 can be reduced. When the pearl printing layer 13 hinders the mirror effect of the metal foil, the color of the metal foil layer 11 becomes the color of pearl printing in copying with a color copier, while the mirror effect is maintained. The pearl print layer 13 has a slightly grayish color.

  The overcoat layer 14 is blended with a polymer polymer, a colorant, a solvent, and the like to prepare a solvent-based ink for the overcoat layer, and covers the pearl print layer 13 together with the diluting solvent and adheres to the anchor layer 12. The dilution solvent is added according to the printing suitability of the solvent-based ink for the overcoat layer, and may be used in an amount corresponding to the printing conditions such as the printing method. Note that wax, silicon, or the like may be added in order to improve the scratch resistance. Here, the overcoat layer 14 may cover the entire pearl print layer 13 or may be covered in a net shape. The anchor layer 12 and the overcoat layer 14 may be bonded even if a part of the end 20 of the overcoat layer 14 is bonded. However, it is more desirable that the area of the bonding surface is large, and the end 20 is entirely formed. Most preferably, it is bonded all around.

  In addition to gravure printing method, screen printing method, flexographic printing method, solvent printing ink for overcoat layer, the pearl printing layer 13 is entirely applied by various commonly used printing methods or printing methods that combine these printing methods. Alternatively, it is possible to form the overcoat layer 14 that is partially covered and the end portion 20 of the overcoat layer 14 adheres to the anchor layer 12. The layer thickness of the overcoat layer 14 is not particularly limited, but is preferably in the range of about 10 μm to 30 μm.

  As the polymer, a transparent single molecular polymerization resin or copolymer resin such as thermoplastic resin or thermosetting resin can be used. For example, polystyrene resin, polyester resin, acrylic resin, silicone resin, fluorine resin Resins, polyamide resins, polyvinyl alcohol resins, polyurethane resins, polyolefin resins, polycarbonate resins, polysulfone resins, polyester resins, and vinyl chloride-vinyl acetate copolymer resins are used as components. These resins may be used alone or in combination. Moreover, although organic solvents, such as toluene, xylene, cyclohexanone, methyl ethyl ketone, ethyl acetate, can be used for a solvent, it is not limited to these. The colorant may be used as necessary, and may be selected from general pigments and dyes as long as the transparency is not impaired. The diluent solvent to be blended with the solvent-based ink for the overcoat layer may be appropriately selected from xylene, methyl isobutyl ketone, cyclohexanone and the like that are generally used.

As described above, the pearl print layer 13 may be formed across the metal foil layer 11 and the substrate 10. 2 and 3, a part of the characters “RD” (region indicated by A in FIG. 3), that is, an example of the securities in which the pearl print layer 13 straddles the metal foil layer 11 and the base material 10 together with the anchor layer 12. Indicates. FIG. 3 is a view showing a cross section taken along line AA of FIG.
As shown in FIG. 3, the overcoat layer 14 covers the metal foil layer so as to enclose the pearl print layer 13, here the letter “RD”, and the end 20 of the overcoat layer 14 is bonded to the anchor layer 12. Since the anchor layer 12 and the overcoat layer 14 are covered so as to wrap the pearl print layer 13, the pearl print layer 13 is securely bonded to the anchor layer 12. As a result, the effect of preventing the peeling of the pearl printing layer 13 from the metal foil layer 11 is synergistically complemented. In FIG. 3, the metal foil layer 11 does not exist in the region indicated by B. Further, in this example, the end portions 20 of the overcoat layer 14 covering the letters R and D are respectively bonded to the anchor layer 12. That is, R and D are covered independently, and each end is bonded to the anchor layer 12. However, R and D are not independent and may be covered with the overcoat layer 14 as one character, and the end 20 thereof may be bonded to the anchor layer 12.

  In order to improve the adhesion between the anchor layer 12 and the end 20 of the overcoat layer 14, at least one component of the polymer polymer of the solvent-based ink for the anchor layer and the solvent-based ink for the overcoat layer should be matched. Is desirable. Preferably, each solvent-based ink component is the same. When each polymer component is a mixture of a plurality of resin components, it is sufficient that at least one type of the same component is included, and more preferably, the types and mixing ratios of all the resin components are the same or Approximate.

  Further, in order to enhance the adhesion between the overcoat layer 14 and the pearl print layer 13, at least one kind of polymer component of the solvent-based ink for the overcoat layer and that of the solvent-based ink for the pearl print layer are used. It is preferable to contain the same component. When each polymer component is a mixture of a plurality of resin components, it is sufficient that at least one type of the same component is included, and the types and mixing ratios of all the resin components are the same or approximate. More preferably.

That is, the anchor layer 12 and the pearl printing layer 13 can be bonded by matching at least one of the polymer components of the anchor layer solvent ink, the pearl printing layer solvent ink, and the overcoat layer solvent ink. And the adhesion between the overcoat layer 14 and the anchor layer 12 can be synergistically enhanced. Most preferably, the components of the high molecular weight polymer of the solvent-based ink in all layers are the same.
In addition, from the viewpoint of design, single-color or multi-color printing may be performed on the substrate 10 in advance, and the metal foil layer 11 may be partially provided on the color printing.

  On a printed matter (made by Murata Gold Foil) with gold foil stamped on cardboard, a solvent-based ink (100 parts by weight) and a diluting solvent (20 parts by weight) having the following composition are obtained by screen printing (silk silk 100L). An anchor layer having a thickness of 15 μm was formed.

(Solvent ink composition)
Resin: Vinyl chloride / vinyl acetate copolymer resin 20-40%
Solvent: Cyclohexanone 50-60%
Alkylbenzene 1-10%

  Next, screen printing was carried out using a solvent-based ink for pearl printing layer in which 18 parts (weight) of a pearl pigment (Iriodin IR201 / Merck Japan) was added to 100 parts (weight) of the solvent-based ink and 50 parts (weight) of a diluting solvent. A pearl print layer was formed on the anchor layer with (silk cocoon 305L). Further, 100 parts (by weight) of the solvent-based ink and 20 parts (by weight) of the diluent solvent are used to form an overcoat layer by covering the pearl print layer by screen printing (silk wrinkle 100L), and drying. It was printed.

The obtained printed matter had a mirror effect of the gold foil, although the gold foil layer was slightly whitened by pearl printing, and also had a pearly luster on the gold foil layer. Further, when this printed matter was copied with a color copier, a printed matter with a pearl-printed gold foil portion turned gray was obtained.
Next, the adhesive tape is peeled off after three types of adhesive tape (3M white translucent weak adhesive tape, Nichiban paper tape, Nichiban cellophane tape (registered trademark)) are applied to the vicinity of the pearl print layer on the gold foil layer. Was repeated twice, and the pearl print layer remained on the metal foil layer even in the peeling test using all the adhesive tapes.

In the formation of the anchor layer and the overcoat layer in Example 1, a printed material was produced under the same conditions as in Example 1 except that no diluent solvent was used.
As in Example 1, the obtained printed material maintained the mirror effect of the metal foil layer. In the peeling test, there was almost no difference from Example 1, but the adhesive force was slightly improved.

[Comparative Example 1]
As a comparison with Example 1, a printed material without an anchor layer was produced according to Example 1.
As in Example 1, when a peel test using an adhesive tape was performed, most of the pearl print layer was peeled off together with the adhesive tape.

It is sectional drawing which showed one Embodiment of the printed matter concerning this invention. 1 shows an example of a securities having a printed material according to the present invention. It is AA sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printed material 10 Base material 11 Metal foil layer 12 Anchor layer 13 Pearl printing layer 14 Overcoat layer 20 Edge part

Claims (6)

  An anchor layer, a pearl print layer, and an overcoat layer are sequentially laminated on the metal foil layer provided on the substrate, and the anchor layer and the overcoat layer are bonded at least partially. Printed matter characterized by that.   The printed matter according to claim 1, wherein the anchor layer is partially provided on the metal foil layer, and the overcoat layer covers the pearl print layer and adheres to the anchor layer. .   The anchor layer, the pearl print layer, and the overcoat layer each contain a polymer, and the polymer polymer of the anchor layer and the polymer polymer of the overcoat layer are the same or at least one type of the same. The printed matter according to claim 1, comprising a component.   The printed matter according to claim 1, wherein the high molecular polymers contained in the anchor layer, the pearl print layer, and the overcoat layer contain the same or at least one type of the same component.   The high molecular polymer contained in the pearl print layer and the high molecular polymer contained in the anchor layer or the overcoat layer are the same, or contain at least one type of the same component. 2. Printed matter according to item 2.   The printed matter according to claim 1, wherein the metal foil layer is a layer having specularity.

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