JPH05201182A - Laminated card - Google Patents

Abstract

PURPOSE:To provide a laminated card having excellent durability, heat resistance and forgery preventive effect by protecting an image formed on the surface of the card and laminating a hologram sheet for preventing forgery. CONSTITUTION:Printed layers 3 are formed onto the surface of a card base material 2, and a transparent hologram sheet 5 with a transparent reflecting layer 4 formed through the evaporation of a transparent metallic compound is laminated onto the card base material 2 from the upper sections of the printed layers 3, thus forming a laminated card 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card having a printed image formed on the surface thereof, such as an identification card or a driver's license, and the image is protected by laminating the surface.

[0002]

2. Description of the Related Art Conventionally, I such as ID card and employee ID
Cards such as D cards and various licenses are widely used. These cards have letters, symbols, and
After printing and recording information such as a code and a face photograph, a transparent plastic sheet is attached to the front surface and the back surface and the whole is laminated to protect the image. The printed image formed on the surface of the card is formed of printing ink, photographic emulsion, paint, dye, or the like.

In recent years, these print images have been photographed on a card substrate by using a thermal transfer printer, such as facial photographs, bar codes, characters,
A method of forming images such as symbols by using sublimation transfer or melt transfer has come to be used. In this method, the image is very clear, for example, in the case of color, it has excellent transparency, and the resulting image has excellent reproducibility and gradation of intermediate colors,
It is possible to form a high-quality image that is similar to an image by conventional offset printing or clavia printing and is comparable to a full-color photographic image.

For example, in the case of sublimation transfer as a material used for forming such a printed image, a sublimation dye is used as a recording agent, and a thermal transfer sheet in which this is carried on a base film such as paper or plastic film is used. In order to form an image, a card substrate is used as a dye receiving layer and a thermal head is used as a heating means.The sublimable dye of the thermal transfer sheet is sublimated and transferred to the card substrate by heating for an extremely short time to develop an image. To form.

However, in the above method, an image formed by printing a face photograph or the like with a sublimation dye has a poor fixing property with a base material and the image is deteriorated by heat, and a plasticizer such as a vinyl chloride resin is included. When contacted with a sheet, there is a problem that the sheet is transferred to the sheet and the image disappears, or the image disappears due to friction or the like, and that copying such as copying is easy and is easily forged.

Therefore, in order to protect the images of these cards and prevent forgery and tampering, a transparent hologram thin film is used as a laminate film, which is laminated on a card substrate and integrated with the card to protect the images and prevent forgery. Proposed cards have been proposed (Japanese Utility Model Laid-Open No. 1-59671, etc.). This transparent hologram thin film is formed by fine concavities and convexities in which the interference fringe pattern of the hologram is duplicated on the surface of the base resin, and a transparent reflection layer made of a metal compound having a high refractive index or a resin having a different refractive index formed on the fine concavities and convexities. It had been.

Conventionally, as the above-mentioned transparent reflection layer, a thin film formed by sublimating zinc sulfide (ZnS) has been used industrially, and this transparent reflection layer is relatively gentle as compared with other metal compounds. Since it can be formed under various conditions, there is little damage to the base resin in the manufacturing process, and since it has an appropriate refractive index, it is characterized in that a good hologram image can be obtained.

[0008]

However, ZnS
The transparent reflective layer formed by the method of sublimating the above is a film in which ZnS is weakly attached to the resin layer, and the physical properties and heat resistance of the film are low, so that there are various problems as described below. Since the heat resistance of the transparent reflective layer is low, the printed image is easily deteriorated and lost by heat during the laminating process. The laminated film is peeled off due to heat deterioration of the transparent reflection layer. The printed image becomes unclear due to whitening of the transparent reflective layer due to heat deterioration. The minute unevenness of the hologram disappears or deforms due to heat during lamination, and the reproducibility of the hologram image decreases. The anti-counterfeiting effect is lost due to the decrease in the reproducibility of the hologram image.

The present invention is intended to solve the above-mentioned problems of the prior art, in which a hologram sheet which is capable of sufficiently protecting an image formed on the surface thereof and which has a transparent reflecting layer excellent in heat resistance is laminated. And to provide a laminated card having excellent durability, heat resistance, and anti-counterfeiting effect.

[0010]

The laminated card of the present invention has a transparent hologram sheet on the surface of which a hologram having a transparent reflection layer formed by vapor deposition of a transparent metal compound is formed on the whole surface or a part thereof. It is characterized by being attached to a card base material provided with a layer.

[0011]

In the laminated card of the present invention, the hologram sheet is laminated and adhered on the surface, so that the image of the printing layer can be protected. Further, even if the image of the printing layer is an image provided by a transfer method such as sublimation transfer, since the transparent reflection layer of the hologram sheet is a layer formed by vapor deposition of a transparent metal compound, a plasticizer is used. There is no risk that the printed image will migrate and disappear or deteriorate when it comes into contact with the contained resin sheet. In addition, since the transparent reflection layer of the metal compound formed by vapor deposition has good heat resistance and durability, it prevents deterioration of the printed image due to heat during lamination. Further, the heat resistance of the resin layer on which the fine irregularities of the hologram are formed is improved, and the heat resistance of the hologram image itself is increased to prevent deterioration of the hologram image due to heat during lamination. At the same time, since the heat resistance of the transparent reflective layer itself is improved, peeling and whitening due to deterioration after heating can be prevented.

The laminated card protects the printed image provided on the printing base material and, at the same time, is formed on the printed image when an attempt is made to copy the printed image by a photograph or a copy (including a color copy). The image of the hologram on the screen interferes with each other and an accurate copy cannot be made. Further, since the hologram sheet having the function of preventing copy is excellent in heat resistance and durability, it is possible to maintain the above copy preventing effect for a long period of time.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view showing an example of the laminated card of the present invention. The laminated card 1 of the present invention has a card base 2 as shown in FIG.
The printing layer 3 is formed on the surface of, and the transparent hologram sheet 5 having the transparent reflection layer 4 formed on the surface of the printing layer by vapor deposition of a transparent metal compound is laminated and adhered. Incidentally, the laminated card of the present invention may have a hologram formed on the entire surface, or may be provided on an arbitrary portion, and either one may be used.

The card substrate 2 used in the laminated card 1 of the present invention is not particularly limited, and any material such as paper, plastic, etc. which is usually used for this type of card can be used. In particular, when the printed image is formed by the sublimation transfer method, the card substrate 2 is made of a material having a dye receiving property on the recording surface,
Alternatively, in the case of a substrate having no dye receptivity, it is preferable to use a substrate having a dye receptive layer formed on the surface. The dye receiving layer is for receiving a sublimable dye and maintaining an image formed, and is formed of various resins.

Examples of the resin having the dye receptive property and the resin for forming the dye receptive layer include polyolefin resins such as polypropylene, polyvinyl chloride, vinyl chloride-
Vinyl acetate copolymers, halogenated polymers such as polyvinylidene chloride, vinyl polymers such as polyvinyl acetate, acrylic polymers such as polyacrylic acid ester, polyethylene terephthalate, polyester resins such as polybutylene terephthalate, polystyrene resins, Polyamide resin, binary or ternary copolymer resin of monomers such as vinyl chloride, vinyl acetate, ethylene and propylene,
Examples thereof include ionomers, cellulosic resins such as cellulose diacetate, and polycarbonates. It is particularly preferable to use a card substrate made of polyester resin, vinyl chloride resin or the like.

A printing layer 3 provided on the surface of the card substrate 2
Is formed by printing characters, codes, symbols, facial photographs, etc., and known printing means such as offset printing using printing ink can be used, but the printing layer 3 is a sublimation type thermal transfer method and / or Images by the wax type thermal transfer method are preferred. In addition to the printing layer 3, these card base materials
An emboss, a signature, an IC memory, a magnetic layer, etc. may be provided. Items other than these printing layers may be provided on the surface of the card substrate after being laminated with a transparent hologram sheet.

When the sublimation type thermal transfer sheet is used as the printing layer 3, a layer containing a sublimable dye is formed,
On the other hand, when a heat-melting type heat transfer sheet is used, it can be formed by using a wax ink layer colored with a pigment. The sublimation dye of the sublimation type thermal transfer sheet is MS Red G
P, Macrolex Red Violet R, Ceres Red 7B, Samaron Red H
BSL, Resolin Red F3BS (red dye), Holon Brilliant Yellow 6GL, PTY-52, Macrolex Yellow 6G (yellow dye), Kayaset Blue 714, Waxolin Blue AP-F
W, Holon Brilliant Blue SR, MS Blue 100 (blue dye), etc. are used.

The transparent hologram sheet 5 used in the laminated card 1 of the present invention is for protecting the image formed on the printing layer and for providing a hologram effect for preventing forgery. As shown in FIG. 1, the transparent hologram sheet 5 is provided with a hologram effect layer 7 on the surface of a transparent base material 6, and the hologram effect layer 7 has minute irregularities 8 of a hologram.
And a transparent reflection layer is formed on the fine irregularities. Here, the holograms include those of the principles such as Fresnel holograms, Fourier transform holograms, and Franhofer holograms, excluding Lippmann holograms, and image holograms, rainbow holograms, holographic stereograms, holographic diffraction utilizing those principles. Lattice etc. are mentioned. The transparent hologram sheet 5 is laminated and adhered to the card substrate 2 via the adhesive layer 9 to be laminated.

The transparent substrate 6 of the transparent hologram sheet 5 is
A transparent sheet or film usually used as a laminate substrate is used, and examples thereof include polyester such as polyethylene terephthalate, polyolefin such as polyethylene and polypropylene, polyvinyl chloride, polycarbonate and the like. Particularly, polyethylene terephthalate is preferable for the transparent substrate, and the thickness of the transparent substrate 6 is 50 to 1
About 50 μm is preferable.

For the hologram effect layer 7 formed on the transparent substrate 6, various resin materials such as thermoplastic resin, thermosetting resin, and ionizing radiation curable resin can be generally used, and the surface of the layer 7 A fine concavo-convex 8 formed by patterning the interference fringe pattern of the hologram is formed on the. The thickness of the base resin forming the hologram effect layer 7 is 1 to 10 μm.
Is desirable.

Examples of the base resin for the hologram effect layer 7 include unsaturated polyester resin, acrylic urethane resin, epoxy-modified acrylic resin, epoxy-modified unsaturated polyester resin, alkyd resin, and phenol resin. Examples of the thermoplastic resin include acrylic acid ester resin, acrylamide resin, nitrocellulose resin, polystyrene resin, and the like. These resins may be used alone or in combination of two or more of various isocyanate resins, metal benzoyl peroxide such as cobalt naphthenate and zinc naphthenate, peroxides such as methyl ethyl ketone peroxide, benzophenone, acetophenone, anthraquinone, naphthoquinone and azo. A heat or ultraviolet curing agent such as bisisobutyronitrile or diphenyl sulfide may be added. As the ionizing radiation curable resin, epoxy acrylate, urethane acrylate, acrylic modified polyester and the like are used as oligomers, and monomers such as neopentyl glycol acrylate and trimethylolpropane triacrylate are used for the purpose of adjusting the cross-linking structure and viscosity. A suitable mixture of

Fine irregularities 8 on the surface of the hologram effect layer 7
Can be formed by any means. For example, when a thermoplastic resin is used as the base resin,
A method of applying unevenness obtained by copying a relief pattern of interference fringes of a hologram to the surface of the thermoplastic resin of the mold by heating embossing, in the case of a curable resin such as an ultraviolet curable resin or an unsaturated polyester resin Examples of the method include a method of filling the resin on the surface of the shaped film having the irregularities of the hologram information, and then irradiating the resin with ultraviolet rays to cure the resin to form the irregularities.

The transparent reflective layer 4 used in the method of the present invention may be any transparent metal compound formed by vapor deposition, and the forming method is not particularly limited. For example, fine hologram irregularities are formed on the surface of the hologram effect layer 7. It is preferable that the transparent reflective layer is formed by vacuum deposition using a metal as an evaporation source in an atmosphere of oxygen after forming the above. The transparent reflection layer 4 is not limited to a single layer, and a plurality of reflection layers having different refractive indexes may be laminated and used as a multilayer reflection film.

The metal forming the transparent reflection layer used as the evaporation source may be any metal capable of forming an oxide or a nitride as the transparent reflection layer, and may be any metal depending on the application of the transparent reflection layer. Any thing can be used. As specific metals, for example, Be, Mg, Ca, Cr, Mn,
Cu, Ag, Al, Sn, In, Te, Fe, Co, Z
n, Ge, Pb, Cd, Bi, Se, Ga, Rb, S
Examples thereof include b, Pb, Ni, Sr, Ba, La, Ce and Au.

Table 1 shows the refractive index (n) of a metal oxide capable of forming a transparent reflective layer in the visible region. For example, the transparent reflective layer 4 of the transparent hologram sheet 5 is shown in Table 1. Metals that form such metal compounds can be used. The thickness of the transparent reflective layer can be adjusted by the vapor deposition time, and is usually formed in the range of 10 to 10000Å, preferably 100 to 5000Å.

[0026]

[Table 1]

When the transparent reflection layer 4 made of the above metal oxide is formed by vapor deposition, any means can be used depending on the compound, but a particularly preferable method of forming the transparent reflection layer 4 is as follows. In this method, the fine irregularities 4 of the hologram are formed on the surface of the hologram effect layer 7, and vacuum deposition is performed using a metal as an evaporation source in a vacuum in an oxygen or / and nitrogen atmosphere. Or / and a method of forming a transparent reflective layer of a metal compound composed of a nitride. When the transparent reflection layer is formed by such a method, when the transparent reflection layer 4 is provided, damage to the resin of the hologram effect layer 7 is small, so that a hologram image with good reproducibility can be obtained.

When the transparent reflective layer is formed by such a method, the heating temperature and the vapor deposition conditions may be milder than the method of directly heating and depositing the metal oxide.
The damage given to the resin forming the hologram effect layer is reduced, and the reproducibility of the image itself can be improved. In particular, when vapor deposition is performed after the fine irregularities of the hologram are provided, the heat during vapor deposition can be suppressed to a low level to prevent disappearance of the fine irregularities of the hologram.

FIG. 2 is a schematic view showing an example of the method of forming the transparent reflection layer. The method for forming the transparent reflective layer will be described in more detail. For this method, for example, the device shown in FIG. 2 is used. The vapor deposition container 11 of the apparatus shown in FIG. 2 has a metal 12 as a vapor deposition source for heating and evaporating a metal, and the heat vaporizing section 13 is a heating device for heating and vaporizing a metal such as an electron beam (EB) heating device. The vapor deposition container 11 is provided with exhaust pipes 14 and 15 for evacuating the interior thereof, the exhaust pipes are connected to an exhaust device 16 such as an exhaust pump, and an atmospheric gas such as oxygen or nitrogen is introduced. A gas introduction pipe 17 is provided.

A transparent hologram sheet 5 is produced by using the above apparatus.
When the transparent reflection layer 8 is formed on, the resin sheet of the hologram effect layer 7 having the fine relief 21 of the hologram relief provided on the surface is set at a predetermined position inside the vapor deposition container. Next, after depressurizing the inside of the vapor deposition container 11 to adjust the degree of vacuum to 10 ⁻⁵ to 10 ⁻⁶ Torr, an atmospheric gas is introduced through the gas introduction pipe 17, and then the metal 1 of the heating / evaporating unit 13 is introduced.
The transparent reflection layer 8 made of a metal compound is formed on the resin sheet surface of the hologram effect layer 7 by heating 2 to an arbitrary temperature to evaporate it and performing vapor deposition for a predetermined time.

In the above method, the vapor deposition atmosphere is appropriately selected from oxygen, nitrogen or a mixed gas thereof depending on the target metal compound. In this way, by introducing oxygen or / and nitrogen gas in a vacuum instead of simply by vacuum deposition, a transparent reflection layer of a metal oxide and / or a nitride can be formed under mild conditions, so that the hologram effect layer 4 can be formed.
You can prevent damage to.

Further, it is preferable to supply a certain amount of excess gas as the amount of the atmosphere gas introduced. this is,
For example, when an excess oxygen gas is supplied and vapor deposition is performed using titanium as a metal, the actually formed transparent reflective layer is TiO 2.
It is a mixture of TiO ₂ and TiO ₂ , and comparing the optical characteristics of the two (see Table 1), TiO ₂ has a high refractive index and excellent characteristics. Therefore, it is preferable to increase the degree of oxidation and to remove excess oxygen. When supplied and evaporated, it prevents the dissociation of oxygen and T
It is possible to form a transparent reflective layer having a high proportion of iO ₂ and good optical characteristics.

Although the degree of vacuum inside the evaporation container 11 varies depending on the type of the metal 12 serving as an evaporation source, the metal is heated and evaporated at a temperature at which the resin of the hologram effect layer 8 is not damaged by heat. The conditions may be any, for example, when titanium is used as the metal, it is usually preferable to set it to about 10 ⁻⁵ to 10 ⁻⁶ Torr.

The heating of the metal 12 serving as the evaporation source is performed by EB
It is preferable to heat using a heating device. This is because the atmosphere gas is excited by the electron beam to be in a weak plasma state, the reactivity with the metal is improved, and the formation of the oxide becomes better. It should be noted that such a plasma gas does not damage the base material unlike plasma such as ion plating.

In this transparent reflection layer forming method, it is preferable that the hologram effect layer 7 to be the vapor-deposited body is cooled by a means such as winding it around a cooling drum through which a coolant is passed to further reduce damage by heat. Further, it is preferable that the degree of vacuum of the vapor deposition container is increased on the side of the vapor deposition section and the degree of vacuum on the winding side is reduced, from the viewpoint of preventing contamination.

When the above-mentioned method of forming the transparent reflection layer is used, a protective layer having excellent hologram image reproducibility can be obtained without degrading the fine irregularities of the hologram or the resin itself of the hologram effect layer 7. Further, due to the heat resistance of the transparent reflection layer 4, the heat resistance of the fine unevenness of the hologram is also improved, and the transparent reflection layer 4 protects the fine unevenness from heat at the time of transfer or long-term heating and prevents deterioration of the hologram image due to heat. can do.

The hologram fine irregularities 21 of the protective layer 5 used in the method of the present invention may be of any design, but may be, for example, a tint block, a logo, a line stripe, a mosaic lattice, or a seal. FIG. 3 is a plan view showing an example of the pattern of the fine irregularities 21 of the hologram. As shown in FIG. 3, for example, when the interiors of arbitrarily partitioned areas A, B, C, and D are formed in interference fringe patterns in different directions, the hologram is visually recognized regardless of which direction the copy is made. Is not reproduced clearly. As described above, particularly from the viewpoint of copy prevention, it is preferable to form the interference fringe pattern in at least two directions (for example, A and B, C and D, ...).

Further, in the method of the present invention, the fine irregularities of the hologram provided on the hologram effect layer 7 can be formed either after forming the transparent reflecting layer or before forming the transparent reflecting layer. For example, when a thermoplastic resin is used as the resin for the hologram effect layer, both before and after are possible. However, in the case of a curable resin such as an ultraviolet curable resin, it is difficult to give fine irregularities after forming the transparent reflective layer, so the fine irregularities are formed before forming the transparent reflective layer.

A known laminating means is used for laminating and integrating the transparent hologram sheet 5 and the card substrate. In this case, it is preferable that the transparent reflection layer side of the transparent hologram sheet is placed on the card base material side with the adhesive layer 9 interposed therebetween and the layers are adhered and integrated.
If it is provided on the transparent hologram sheet 5 in advance, it can be easily handled until the bonding step, and it may be extrusion-coated on the card substrate 2 after the printing layer 3 is provided. Further, the adhesive layer 9 may be formed in a sheet shape, and may be sandwiched and adhered between the card substrate 2 and the transparent hologram sheet 5 at the time of lamination.

As the above-mentioned adhesive layer 9, a known heat-sensitive adhesive resin or the like can be used. For example, polyisoprene rubber,
Rubber-based materials such as polyisobutylene rubber and styrene-butadiene rubber, methyl poly (meth) acrylate, ethyl poly (meth) acrylate, propyl poly (meth) acrylate, butyl poly (meth) acrylate, polyacrylic 2-ethylhexyl, etc. (Meth) acrylic acid ester type, polyvinyl ether type such as polyisobutyl ether, polyvinyl acetate type, polyvinyl acetate type such as vinyl chloride-vinyl acetate copolymer, polyamide type such as polyacrylamide and polymethylolacrylamide, polyvinyl chloride type Other examples include vinyl chloride-based compounds such as vinyl acetate / octyl acrylate, vinyl acetate / butyl acrylate, vinylidene chloride / butyl acrylate, and the like.

The laminated card 1 of the present invention can be optimally used for various cards such as an employee ID card, a membership card, an entry permit, a passport, a bank card, a credit card, and a license card such as a driver's license. However, it is particularly suitable for a face photograph formed as a printed image.

The present invention will be described in more detail by showing specific examples of the present invention. Example 1 The following hologram effect layer composition was applied to the surface of a transparent substrate made of polyethylene terephthalate having a thickness of 50 μm to form a hologram effect layer having a thickness of 2 μm. Then, fine irregularities were formed on the surface of the hologram effect layer by embossing using a mold provided with an irregular pattern of interference fringes of the hologram.

Further, the one having the fine irregularities formed therein is placed in a vapor deposition container, the interior of the container is evacuated, and the degree of vacuum is set to 2 ×.
After the pressure was adjusted to 10 ^-6 Torr, the inside of the vapor deposition container was kept at 1 × 10 ^{-6 to} 5 × 10 ^-6 Torr while introducing oxygen gas, and metal titanium was used as the vapor deposition source to apply the voltage of the electron beam to the metal. Evaporate by heating at 1300 to 1500 ℃ at 10kV to vaporize
After a second, a transparent reflection layer of titanium oxide was provided to form a transparent hologram sheet. The transparent reflection layer of the obtained transparent hologram sheet was formed of TiO ₂ having a refractive index of 2.2 and a high degree of oxidation.
Is a thin film layer with a thickness of 450Å and a reflectance of 30%.
(550 nm, incident angle 5 °, absolute reflection) It was a transparent reflection film having a transmittance of 60%.

On the other hand, a yellow dye layer of a sublimation type thermal transfer sheet is superposed on the surface of a card substrate made of a polyvinyl chloride resin, and a yellow image is transferred by a thermal printer which operates according to a color separation signal. The image was transferred to form a full-color facial photo print image. An ethylene-methacrylic acid copolymer resin adhesive (composition below) was extrusion-coated on the surface of the card substrate on which the above-mentioned printed image was formed so as to have a film thickness of 20 μm, and the transparent reflection layer of the transparent hologram sheet was formed. The side and the adhesive were overlapped so that they were in contact with each other, and they were integrated by roll pressing while heating (about 100 ° C.) to obtain a laminated card. The durability of the obtained card was evaluated, and the evaluation results are shown in Table 2.
Shown in.

Hologram effect layer composition Acrylic resin 40 parts by weight Melamine resin 10 〃 ・ Cyclohexanone 50 〃 ・ Methyl ethyl ketone 50 〃

Adhesive Layer Composition / Ionomer Resin (Mitsui DuPont Polychemical Co., Ltd .: Himilan 1652)

Comparative Example 1 For comparison, Z was added to the transparent reflection layer of the transparent hologram sheet.
Example 1 except that one formed by sublimating nS was used
A laminated card was formed by using the same material and method as in Example 1, the durability was evaluated in the same manner as in Example 1, and the evaluation results are shown in Table 2.
It was shown to.

[0048]

[Table 2]

* Evaluation method-Reproducibility of printed image after lamination: blurring of printed image,
Visual determination of bleeding ・ Prevention of migration of printed image: Same as above ・ Adhesion of laminate: Adhesive force of 180 ° peeling test is 1kg / cm or more ・ Reproducibility of hologram image: Diffracted light reflected when irradiated with laser light The strength of

[0050]

As described above, the transparent reflection layer forming method of the present invention has the following effects by adopting the above-mentioned structure. Since the transparent reflective layer uses a metal compound such as a metal oxide formed by vapor deposition, the transparent reflective layer firmly adheres to the resin forming the fine irregularities of the hologram and the heat resistance of the transparent reflective layer itself, Because it has good durability,
Compared with a conventional laminated card using a hologram sheet having a transparent reflection layer formed by sublimation of ZnS, the image of the printed layer provided on the card base material is prevented from being deteriorated by heat during laminating processing. Has the effect of protecting.

Further, in the laminated card of the present invention, the transparent reflection layer is made of an inorganic compound such as a metal compound, and the physical properties as a film are good, so that the image becomes unclear due to whitening due to heat deterioration, and the laminated film is There is no problem such as peeling from the card substrate. Further, the effect of preventing the transfer of the image when the image of the printed layer comes into contact with the resin containing the plasticizer is large, and the effect of preventing the transfer does not decrease even after heating.

Further, since the fine embossment of the hologram is protected from the heating during lamination and the reproducibility of the hologram image is not deteriorated, it is possible to maintain a good anti-counterfeiting effect for a long period of time and improve safety. You get a good card.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an image forming method of the present invention.

FIG. 2 is a schematic view showing an example of a transparent reflective layer forming method.

FIG. 3 is an explanatory diagram showing an example of a pattern of fine irregularities of a hologram.

[Explanation of symbols]

 1: Laminated card 2: Card base material 3: Printing layer 4: Transfer layer 5: Transparent hologram sheet

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location // B42D 209: 00 9111-2C

Claims (1)

[Claims] 1. A transparent hologram sheet having a hologram having a transparent reflection layer formed by vapor deposition of a transparent metal compound formed on the entire surface or a part thereof is attached to a card substrate having a printing layer on the surface thereof. A laminated card characterized by being worn.