JPH05201181A - Identification card - Google Patents

Abstract

(57) [Summary] [Purpose] An ID card that has the function of being able to see a photo through a transparent relief sheet that is difficult to counterfeit and destroying the transparent relief sheet that is difficult to counterfeit if you try to replace the photo. Is to provide. A protective layer 63 is formed on the transparent layer 61 with a peeling layer 64 interposed therebetween.
And the transparent relief sheet 6 is adhered such that the breaking strength of the transparent layer forming the transparent relief sheet 6 is smaller than the adhesive strength between the transparent relief sheet 6 and the base material 2 or the photograph 4. ..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to identification cards, examination cards,
The present invention relates to an ID card such as a passport, in which the photograph attached to the ID card needs to be compared with the person who brings the certificate.

[0002]

2. Description of the Related Art In recent years, in order to match a person who carries an identification card with a person who is listed on the identification card, the identification number cannot be visually confirmed by magnetic recording or optical recording on the identification card. It is recorded by the method, and the face photograph of the person described on the ID card is attached to the ID card. By the way, when attaching the face photo of the person listed on the ID card to the ID card, replace the face photo of the legitimate person who should have the ID card with the face photo of another person, , There are many people who use ID cards.

[0003]

Therefore, in order to integrate the identification card and the face photograph, like the conventional identification card 71 shown in FIG. 7, the face photograph is placed on the base material 72. 7
4 is adhered via a glue 73, and an imprint of a marking 75 (a tiling mark) is made so as to straddle the base material 72 and the face photograph 74. However, it is easy to forge the imprinted imprint mark 76 after reprinting the face photograph 74, and by imprinting only the surface on which the image of the face photograph 74 is formed, the imprinted imprint is performed. You can reproduce the trace 76 of
It was very difficult to visually judge whether or not the face photograph 74 was replaced.

An object of the present invention is to easily discriminate whether or not the photograph attached to the identification card is replaced by looking at the display object which is attached to the photograph and is difficult to forge. In addition, it is possible to provide an identification card having a function of being able to see a photograph through a display body that is difficult to forge, and destroying the display body when trying to replace the photograph.

[0005]

In order to solve the above problems, the identification card according to the present invention may have a structure in which a transparent relief sheet is adhered on the base material of the identification card and on the photograph. it can.

Further, a protective layer is provided on the transparent layer via a release layer, or the breaking strength of the transparent layer forming the transparent relief sheet is higher than the adhesive strength between the transparent relief sheet and the substrate or the photograph. It can also be made small.

Further, on the transparent relief sheet,
A part of the individual information recorded on the identification card may be formed.

[0008]

With the identification card of the present invention, by making the relief sheet transparent, the photograph can be confirmed through the relief sheet. Also, since the transparent relief sheet is adhered to the base material of the ID card on the photograph, when the peeling of the transparent relief sheet is tried to replace the photograph, first the protective layer peels from the transparent layer and the transparent relief sheet is removed. If the sheet is destroyed and further attempts are made to peel the transparent layer, the transparent layer will be destroyed and a part of the transparent layer will remain on the substrate or on the photograph.

Further, by printing a part of the individual information recorded on the identification card on the surface of the transparent relief sheet, when the photograph is replaced with the transparent relief sheet, it can be easily identified.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. Taking the examination card shown in FIG. 1 as an example, the identification card 1 according to the present invention has individual information 8 such as a name and an examination number written therein, and a face photograph 4 is also attached thereto. .. This facial photograph 4 is attached so that the person who brings in the examination voucher can verify whether or not the person has the personal information described in the examination voucher. A transparent relief sheet 6 is adhered on the face photograph 4.
A hologram image 9 such as a school name or a school badge is recorded on the transparent relief sheet 6 in an uneven pattern corresponding to a hologram interference pattern or a diffraction grating. Individual information 7 such as an examination number corresponding to a part of the individual information 8 entered above is formed.

Next, the layer structure of the identification card 1 according to the present invention will be described with reference to FIG. 2 which is a sectional view taken along the line AA of FIG. A face photograph 4 is pasted on the base material 2 via the glue 3, and so as to straddle the base material 2 and the face photograph 4,
The transparent relief sheet 6 is adhered via the adhesive 5. Further, individual information 7 is formed on the transparent relief sheet 6.

As the base material 2, paper, synthetic paper, synthetic resin,
Alternatively, a known material such as metal can be used, and various forms such as a sheet shape like an examination card, a card shape like an ID card, and a booklet shape like a passport can be used.

As the glue 3, the above-mentioned base material 2 and face photograph 4 are used.
As long as you can stick and, common starch paste,
Conventionally known glue such as synthetic glue can be used.
Also, without using the glue 3, put the face photograph 4 on the base material 2,
The face photograph 4 can also be attached to the base material 2 by adhering the transparent relief sheet 6 to the base material 2 and the face photograph 4.

As the face photograph 4, a known photographic material typified by silver salt may be used, and it is not necessarily a photograph of a face, but a photograph of a part such as a fingerprint or an ear that can identify an individual. I wish I had it.

The adhesive 5 is for adhering the transparent relief sheet 6 to the base material 2 and the facial photograph 4, and various types of adhesives can be used for this purpose. Is exemplified. Phenolic resin, furan resin, urea resin, melamine resin, polyester resin, polyurethane resin, epoxy resin or other thermosetting resin, polyvinyl acetate resin, polyvinyl alcohol resin, polyvinyl chloride resin, polyvinyl resin Butyral resin, poly (meth) acrylic resin, nitrocellulose, polyamide or other thermoplastic resin, butadiene-acrylonitrile rubber, neoprene rubber or other rubber, or glue, natural resin, casein,
It is possible to use an adhesive containing one or more of sodium silicate, dextrin, starch, gum arabic and the like as a main component. Further, these adhesives may be any of a solution type, an emulsion type, a powder type or a film type, and further may be any one of a room temperature solidification type, a solvent volatilization solidification type, a melt solidification type and the like.

Further, in the present invention, what is called a pressure-sensitive adhesive as an adhesive, for example, an acrylic resin, an acrylic ester resin, or a copolymer thereof, a styrene-butadiene copolymer, a natural rubber, casein, gelatin, Rosin ester, terpene resin, phenolic resin, styrene resin, chromanindene resin, xylene, aliphatic hydrocarbon, polyvinyl alcohol, polyethylene oxide, polymethylene oxide, polyethylene sulfonic acid, etc. can be used, and the adhesiveness is improved by heating. A heat-sensitive adhesive to be applied (in other words, a heat sealing agent) can also be used. The material constituting the heat-sensitive adhesive, polyethylene, polyvinyl acetate, or copolymers thereof, acrylic resin or ethylene-acrylic acid copolymer, polyvinyl butyral, polyamide, polyester, plasticized chloroprene, polypropylene, polyvinyl ether, Examples thereof include thermoplastic resins such as polyurethane, cellulosic resins, waxes, paraffins, rosins and asphalts, and uncured thermosetting resins such as epoxy resins and phenol resins. The thickness of the adhesive 5 is 4μ
It is preferably about m to 20 μm.

The transparent relief sheet 6 is, as shown in FIG. 3, a transparent layer 61 and a reflective layer comprising a transparent thin film formed on a surface having an uneven pattern corresponding to the hologram interference pattern of the transparent layer 61. 62, a release layer 6 laminated on the surface of the transparent layer 61 opposite to the surface having the uneven pattern
4 and the protective layer 63.

The transparent layer 61 can be composed of various materials, and known materials such as silver salts, known photographic materials, photosensitive resins, and thermoplastics can be used. However, all of these materials require exposure and development, and even if they are carried out simultaneously using a large number of original plates,
Not necessarily suitable for mass production.

Therefore, the hologram is first expressed in the form of concavities and convexities by using a photosensitive resin, a thermoplastic or the like to form a relief hologram, and the obtained relief hologram is molded by plating or the like into a mold or By creating and using a resin mold, it is possible to mass-reproduce relief holograms by a molding method for a synthetic resin. It is more preferable that the transparent layer 61 is made of a moldable synthetic resin.

Examples of the moldable synthetic resin include the following. Thermoplastic resins such as polyvinyl chloride, acrylic (eg, MMA), polystyrene, polycarbonate, unsaturated polyester, melamine, epoxy, polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, polyether (meth ) Acrylate, polyol (meth)
A cured product of a thermosetting resin such as acrylate, melamine (meth) acrylate, or triazine acrylate, or a mixture of the thermoplastic resin and the thermosetting resin can be used.

Further, as a moldable synthetic resin, a thermoformable substance having a radical-polymerizable unsaturated group can be used, and there are the following two types. (1) A polymer having a glass transition point of 0 ° C to 250 ° C and having a radically polymerizable incompatible group in the polymer. More specifically, as the polymer, a polymer obtained by polymerizing or copolymerizing the following compounds with a radically polymerizable unsaturated group introduced by any of the following methods (a) to (d) can be used. Monomers having hydroxyl groups: N-methylol acrylamide, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate,
2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate and the like. Monomers having a carboxyl group: acrylic acid, methacrylic acid, acryloyloxyethyl monosuccinate, etc. Monomers having epoxy groups: Glycidyl methacrylate, etc. Monomers having an aziridinyl group: 2-aziridinylenyl methacrylate, allyl 2-aziridinyl propionate and the like. Monomers having amino groups: acrylamide, methacrylamide, diacetone acrylamide, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, etc. Monomers having sulfone groups: 2-acrylamido-2-methylpropanesulfonic acid, etc. Isocyanate group-containing monomer: 2,4-toluene diisocyanate and 2-hydroxyethyl acrylate, such as a 1 mol to 1 mol adduct of diisocyanate and a radical-polymerizable adduct having active hydrogen. Further, in order to control the glass transition point of the above copolymer or to control the physical properties of the cured film, the above compound is copolymerized with the following monomer that is copolymerizable with this compound. You can also let it. Such copolymerizable monomers include, for example, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate,
Butyl acrylate, butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, t-butyl acrylate, t-butyl methacrylate, isoamyl acrylate, isoamyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate,
2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and the like can be mentioned.

Next, the polymer obtained as described above is reacted according to the following methods (a) to (d) to introduce a radically polymerizable unsaturated group to obtain a material according to the present invention. be able to. (A) In the case of a polymer or copolymer of a monomer having a hydroxyl group, a monomer having a carboxyl group such as acrylic acid or methacrylic acid is subjected to a condensation reaction. (B) In the case of a polymer or copolymer of a monomer having a carboxyl group or a sulfone group, the above-mentioned monomer having a hydroxyl group is subjected to a condensation reaction. (C) In the case of a polymer or copolymer of a monomer having an epoxy group, an isocyanate group or an aziridinyl group, the above-mentioned monomer having a hydroxyl group or a monomer having a carboxyl group is subjected to an addition reaction. (D) In the case of a polymer or copolymer of a monomer having a hydroxyl group or a carboxyl group, a monomer having an epoxy group, a monomer having an aziridinyl group, or a diisocyanate compound and a hydroxyl group-containing acrylate monomer 1 body of 1 mol of the adduct is subjected to an addition reaction. In order to carry out the above reaction, it is preferable to add a trace amount of a polymerization inhibitor such as hydroquinone and to carry out the dry air.

(2) A compound having a radically polymerizable unsaturated group and a melting point of 0 ° C to 250 ° C. Specifically, stearyl acrylate, stearyl methacrylate,
Examples thereof include triacryl isocyanurate, cyclohexanediol diacrylate, cyclohexanediol dimethacrylate, spiroglycol diacrylate, and spiroglycol dimethacrylate. Further, the above-mentioned (1) and (2) may be mixed and used as the moldable synthetic resin, and a radical-polymerizable unsaturated monomer may be added to them. This radically polymerizable unsaturated monomer improves the crosslink density upon irradiation with ionizing radiation, and in addition to the above monomers, ethylene glycol diacrylate, ethylene glycol dimethacrylate, polyethylene glycol diacrylate,
Polyethylene glycol dimethacrylate, hexanediol diacrylate, hexanediol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, trimethylolpropane dimethacrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, pentaerythritol triacrylate, pentaerythritol Trimethacrylate, dipentaerythritol hexaacrylate, dipentaerythritol hexamethacrylate, ethylene glycol diglycidyl ether diacrylate, ethylene glycol diglycidyl ether dimethacrylate, polyethylene glycol diglycidyl ether diacrylate, polyethylene glycol diglycol Diethyl ether dimethacrylate, propylene glycol diglycidyl ether diacrylate, propylene glycol diglycidyl ether dimethacrylate, polypropylene glycol diglycidyl ether diacrylate, polypropylene glycol diglycidyl ether dimethacrylate, sorbitol tetraglycidyl ether tetraacrylate, sorbitol tetraglycidyl ether tetramethacrylate Etc. can be used, and it is preferable to use 0.1 to 100 parts by weight with respect to 100 parts by weight of the solid content of the above-mentioned copolymer mixture. Further, the above-mentioned are sufficiently curable by electron beam, but when cured by irradiation with ultraviolet rays, benzoquinone as a sensitizer, benzoin, bunzoin ethers such as benzoin methyl ether, halogenated acetophenones, Those that generate radicals upon irradiation with ultraviolet rays, such as biacetyls, can also be used.

In order to form the relief hologram on the transparent layer 61 by using the above-mentioned moldable synthetic resin, a conventionally known method can be used. As a mold for forming the relief hologram, (1) one in which the interference fringes of the hologram are formed in the form of unevenness on the photoresist by exposure and development, (2) the uneven side of (1) above A mold in which the unevenness of (1) above is duplicated by performing silver plating and nickel plating on the (mold surface), and
(3) Any of resin molds or the like in which the mold surface irregularities of the molds of (1) or (2) above are duplicated with a synthetic resin can be used, and these molds are duplicated in large numbers by appropriate means to perform an appropriate arrangement. It is advisable to make it a composite type so that many relief holograms can be duplicated in one imprinting step. In addition, when making a mold with a synthetic resin, a thermosetting or ionizing radiation-curable synthetic resin is used as the material of the mold to improve the wear resistance of the mold and the heat resistance of the mold when hot pressing. Good to use.

The holograms provided in the transparent layer 61 in the form of concavities and convexities include principles such as Fresnel holograms, Fourier transform holograms, and Franhofer holograms, excluding Lippmann holograms, and image holograms utilizing those principles, Rainbow holograms, holographic stereograms, holographic diffraction gratings, etc. are used. The thickness of the transparent layer 61 is 0.
It is about 4 to 4 μm, preferably 1 to 2 μm.

The reflective layer 62 made of a transparent thin film is the transparent layer 61.
To give reflectivity to the hologram of Cr, T
i, Fe, Co, Ni, Cu, Ag, Au, Ge, A
l, Mg, Sb, Pb, Pd, Cd, Bi, Se, S
It is formed by using a metal such as n, In, Ga, or Rb and its oxide, nitride, or the like alone or in combination of two or more kinds. Among these metals, Al, Cr, Ni, Ag, Au and the like are particularly preferable. The reflective layer 62 made of a transparent thin film can be formed by a method such as vapor deposition, sputtering, ion plating, CVD, or plating, and has a thickness of 20 to 10.
It is preferably 0 nm.

Alternatively, the above metal, metal oxide,
Alternatively, even if a continuous thin film of a substance having a refractive index different from that of the transparent layer 61 is provided in addition to a thin film of metal nitride alone or in combination, such a film itself is a transparent thin film although it is transparent. It can be used as a reflective layer. Among these, if the refractive index is larger than that of the transparent layer (hereinafter, the refractive index: n is added in parentheses to the right of the material name), Sb ₂ S
₃ (n = 3.0), Fe ₂ O ₃ (n = 2.7), TiO
₂ (n = 2.6), CdS (n = 2.6), CeO
₂ (n = 2.3), ZnS (n = 2.3), PbCl ₂
(N = 2.3), CdO (N = 2.2), Sb ₂ O
₃ (n = 2.0), WO ₃ (n = 2.0), SiO (n
= 2.0), Bi ₂ O ₃ (n = 2.5), In ₂ O
₃ (n = 2.0), PbO (n = 2.6), Ta ₂ O ₅
(N = 2.4), ZnO (n = 2.1), ZrO ₂ (n
= 2.0), Cd ₂ O ₃ (n = 1.8), Al ₂ O
₃ (n = 1.6), CaO.SiO ₂ (n = 1.8) and the like. The continuous thin film preferably has a refractive index higher than that of the transparent layer 61 by 0.3 or more, more preferably 0.5 or more. According to the experiments conducted by the present inventors, it is found that the optimum value is 1.0 or more.

The thickness of the continuous thin film may be in the transparent region of the material forming the thin film, but normally 10 to 1000 nm is preferable. As a method for forming the continuous thin film on the relief forming surface of the transparent layer, a general thin film forming means such as a vacuum vapor deposition method, a sputtering method, a reactive sputtering method, an ion plating method can be adopted. When a continuous thin film with a large refractive index is provided in this way, due to the angle dependence of reproduction that is a feature of holograms, it does not appear as a transparent body outside the reproducible angle range of the hologram, but within the reproducible angle range of the hologram. Then, the reflectance of light becomes maximum, and the effect as a reflective hologram appears.

The above-mentioned continuous thin film may have a refractive index smaller than that of the transparent layer, such as LiF (n = 1.4), M
gF ₂ (n = 1.4), 3NaF · AlF ₃ (n = 1.
4 or 1.2), AlF ₃ (n = 1.4), CaF
₂ (n = 1.3 or 1.4), NaF (n = 1.
3) etc. are illustrated. Alternatively, a transparent strong derivative having a refractive index larger than that of the transparent layer can be used as well, and CuCl (n
= 2.0), CuBr (n = 2.2), GaAs (n =
3.3 to 3.6), GaP (n = 3.3 to 3.
5), N ₄ (CH ₂ ) ₆ (n = 1.6), Bi ₄ (Ge
O ₄ ) (n = 2.1), KH ₂ PO ₄ (KDP) (n =
1.5), KD ₂ PO ₄ (n = 1.5), NH ₄ H ₂ P
O ₄ (n = 1.5), KH ₂ AsO ₄ (n = 1.6),
RbH ₂ AsO ₄ (n = 1.6), BaTiO ₃ (n =
2.4), KTa _0.65 Nb _0.35 O ₃ (n = 2.3), K
_0.6 Li _0.4 NbO ₃ (n = 2.3), KSr ₂ Nb ₅
O ₁₅ (n = 2.3), Sr _X Ba _1-X Nb ₂ O ₆ (n =
2.3), Ba ₂ NaNbO ₁₅ (n = 2.3), LiN
bO ₃ (n = 2.3), LiTaO ₃ (n = 2.4),
SrTiO ₃ (n = 2.4), KTaO ₃ (n = 2.
2) etc. are illustrated.

Further, even in the case of the reflective layer composed of the above-mentioned transparent thin film, when the thickness is 20 nm or less, the refractive index is represented by the complex refractive index n ^* (n ^* = n-ik), and the transmittance is considerably small. Although it is transparent, it can be used as a reflective layer composed of a transparent thin film. Specifically, Be (n = 2.7, k =
0.9, hereinafter n and k are described in this order), Mg (0.6, 0.
1), Ca (0.3, 8.1), Sr (0.6, 3.
2), Ba (0.9, 1.7), La (1.8, 1.
9), Ce (1.7, 1.4), Cr (3.3, 1.
3), Mn (2.5, 1.3), Cu (0.7, 2.
4), Ag (0.1, 3.3), Au (0.3, 2.
4), Al (0.8, 5.3), Sb (3.0, 1.
6), Pb (1.9,), Ni (1.8,
) And others such as Sn, In and Te.

A transparent synthetic resin layer having a refractive index different from that of the transparent layer 61 may be used as the reflective layer 62 made of a transparent thin film. Specific synthetic resins that can be used are as follows. is there. Polytetrafluoroethylene (refractive index; n = 1.35),
Polychlorotrifluoro (n = 1.43), polyvinyl acetate (n = 1.45 to 1.47), polyethylene (n =
1.50 to 1.54), polypropylene (n = 1.4
9), polymethylmethacrylate (n = 1.45), polystyrene (n = 1.60), polyvinylidene chloride (n
= 1.60 to 1.63), polyvinyl butyral (n
= 1.48), polyvinyl formal (n = 1.5
0), polyvinyl chloride (n = 1.52 to 1.55),
Polyester (n = 1.52 to 1.57).

Since the hologram is visible even when the transparent layer 61 is used alone without the reflective layer 62 made of a transparent thin film, the reflective layer 62 made of a transparent thin film can be omitted. As described above, the hologram in the present invention basically has the transparent layer 61 having the hologram unevenness on the lower surface and the reflective layer 62 made of a transparent thin film on the lower surface of the transparent layer, but the hologram unevenness is on the upper surface. A transparent layer having
It may be composed of a reflective layer made of a transparent thin film provided in contact with the irregularities of the hologram.

As the protective layer 63, it is usually preferable to use a transparent plastic film, for example, polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, polyvinylidene chloride, polymethacryl. Polymer films of methyl acid, polystyrene, polyvinyl butyral, polycarbonate, polyamide, cellulosic resin, nylon, acrylic resin, fluororesin, etc. may also be used. Above all, a polyethylene terephthalate film having tensile strength and heat resistance is preferable. The unevenness of the relief hologram has a very small depth of about 2000 Å, and the hologram forming layer 61 itself can be made of a very thin synthetic resin layer. However, generally speaking, it is difficult to handle a very thin synthetic resin film, and it is better that the very thin synthetic resin layer is reinforced by some means. 1 to 2 μm of the peeling layer 64 on the transparent protective layer 63
After forming the relief hologram, it is easy to form a relief hologram by applying synthetic resin, applying melt coating, or laminating by laminating means such as laminating, and then attaching the hologram, or by attaching the hologram together with the lamination. It becomes easy to handle. As the peeling layer 64, a resin of a material having weak adhesion to the protective layer 63 is used, and specifically, a polymethylmethacrylate resin and another thermoplastic resin, for example, vinyl chloride / vinyl acetate copolymer, nitrocellulose resin. And a mixture of polyethylene wax, a mixture of a cellulose acetate resin and a thermosetting acrylic resin, a melamine resin, and the like.

As means for forming the individual information 7, for example, a toner, a heat-melting type transfer ribbon, a type ribbon, a printing ink or the like which is generally used as a means for recording information is used. , It is sufficient to form the information of the holder of the identification card such as the examination number and name. Further, when the individual information 7 is formed on the transparent relief sheet 6 by using the sublimable dye, the sublimable dye permeates the transparent relief sheet 6 and becomes integral and rewriting becomes difficult. Therefore, the effect of preventing forgery is obtained. Further improve.

The individual information 8 is a means for writing known individual information such as handwriting, type and printer, and the name, examination number, age, sex and the like may be written.

The holographic image 9 can be differentiated from the examination admission tickets of other schools by recording an image with no versatility such as school name and school badge.

Next, the function of preventing tampering with the ID card of this embodiment will be described. When the peeling of the transparent relief sheet 6 of the ID card 1 shown in FIGS. 1 and 2 is attempted for the purpose of replacing the face photograph 4, the case where the base material 2 is destroyed and the transparent relief sheet 6 is It may be destroyed as shown in 4. In the former case, if a tint block or a color pattern is printed on the base material 2 in advance, it can be easily discriminated whether or not it is a falsified identification card.

In the latter case, the protective layer 63 is peeled off from the transparent layer 61, or the concave and convex pattern corresponding to the hologram interference pattern or the diffraction grating remains on the base material 2 or the face photograph 4 and the transparent relief sheet 6 is formed. It may be divided into parts that are left as they are. Here, when the face photograph 4 is replaced with the face photograph 4'and the transparent relief sheet 6 is adhered, as shown in FIG. 5, the uneven pattern corresponding to the hologram interference pattern or the diffraction grating is partially formed. Since the holographic image has unevenness such as illuminance, and the reconstructed image by the diffraction grating is partially missing, it is easy to visually judge whether it is a falsified ID. You can

Further, even if the face photograph 4 is replaced with the face photograph 4'and a new transparent relief sheet 6'is prepared and adhered to the base material 2 and the face photograph 4 ', as shown in FIG. Since the hologram interference pattern and the concavo-convex pattern corresponding to the diffraction grating are partially overlapped, it is possible to easily judge whether or not the hologram image is reproduced in multiple and visually tampered with.

In order to more surely destroy the hologram interference pattern of the transparent relief sheet 6 and the uneven pattern corresponding to the diffraction grating, the breaking strength of the transparent layer 61 is set to the transparent relief sheet 6 and the base material 2 or the face photograph 4. The thickness of the transparent layer 61 is 1 to 2 μm.
It can be achieved by forming in the range. Further, the transparent layer 61 has a styrene resin such as polystyrene or poly-α-methylstyrene, a styrene copolymer, an acrylic resin such as polymethyl methacrylate, polyethyl methacrylate, polymethyl acrylate, polyethyl acrylate, or polybutyl acrylate. Alternatively, a methacrylic resin homopolymer or copolymer resin,
Ethyl cellulose, nitrocellulose, ethyl hydroxyethyl cellulose, cellulose, cellulose acetate propionate, cellulose acetate butyrate,
Thermosetting of cellulose derivatives such as cellulose acetate, polyvinyl alcohol, polyvinyl chloride, polypropylene, polyethylene, polyether resins, etc., or mixtures or copolymers, phenol resins, urea resins, melamine resins, etc. Resin, etc.,
Further, as a filler, charcoal, talc, china clay,
Add inorganic fine powder such as kaolin, micro silica, TiO ₂ , glass flakes, asbestos, wax powder, silica powder (stone powder), barium sulfate, schelben, and chamotte to the extent that the transparency of the transparent layer 61 is not impaired. Since it becomes more brittle, the transparent layer 61 is surely destroyed, which is preferable.

Example 1 A protective layer made of transparent polyethylene terephthalate having a thickness of 50 μm was coated with a silicone-based release agent at 0.5 g / m ² to form a release layer, and an acrylic resin was formed on the release layer. A transparent layer containing melamine resin as a main component was formed to a thickness of 2 μm, and then embossing was performed using a mold having an uneven pattern corresponding to the hologram interference pattern on the surface of the transparent layer. Further, an acrylic adhesive mixed with microsilica was applied to the surface of the embossed transparent layer to a thickness of 5 μm to form a transparent relief sheet. A number corresponding to the examination number printed on the base material is provided on the transparent relief sheet by a sublimation transfer method, and the transparent relief sheet is adhered to a paper base material on which a facial photograph is adhered to give an examination card. Formed.

[0042]

EFFECT OF THE INVENTION Since the transparent relief sheet is adhered on the base material of the identification card and on the photograph, the photograph can be seen even through the transparent relief sheet, which is a display body that is difficult to impersonate, and therefore the ID card It is possible to easily determine whether or not the base material of the identification card and the photograph are authentic and integral by simply looking at the transparent relief sheet without impairing the function as a document.

When the transparent relief sheet having the protective layer formed on the transparent layer via the release layer is used, the protective layer is easily peeled from the transparent layer, so that the transparent relief sheet is surely destroyed.

Further, if the breaking strength of the transparent layer is set to be smaller than the bonding strength of the adhesive, the uneven pattern corresponding to the hologram interference pattern or the diffraction grating is surely destroyed.

Further, by forming a part of the individual information on the transparent relief sheet, it is possible to easily determine whether or not the transparent relief sheet is genuine and integral even if the transparent relief sheet is replaced together with the photograph.

[Brief description of drawings]

FIG. 1 is a front view of an identification card according to the present invention.

2 is an identification card according to the present invention, which is A- in FIG.
It is an A line sectional view.

FIG. 3 is a cross-sectional view of a transparent relief sheet used for an identification card according to the present invention.

FIG. 4 is a diagram showing a state in which the transparent relief sheet used for the identification card according to the present invention is peeled from the base material and photograph.

FIG. 5 is a view showing a state in which photographs are replaced in the identification card according to the present invention.

FIG. 6 is a view showing a state where a transparent relief sheet and a photograph are replaced in the identification card according to the present invention.

FIG. 7 is a diagram showing a conventional identification card.

[Explanation of symbols]

 1 ID card 2 Base material 3 Glue 4 Face photograph 4'Face photograph 5 Adhesive 6 Transparent relief sheet 6'Transparent relief sheet 61 Transparent layer 62 Reflective layer consisting of transparent thin film 63 Protective layer 64 Release layer 7 Personal information 8 Personal information 9 Hologram image 71 Identification card 72 Base material 73 Glue 74 Face photograph 75 Engraved mark 76 Engraved mark

Front page continuation (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location G06K 19/06 19/10 // B42D 203: 00 9111-2C 209: 00 9111-2C

Claims (4)

[Claims] 1. An identification card in which a personal identification photograph is provided on a base material and individual information is recorded, an uneven pattern corresponding to a hologram interference pattern or a diffraction grating is formed on the transparent layer surface, An identification card characterized in that a transparent relief sheet having a reflective layer made of a transparent thin film formed on the surface of the transparent layer on which the uneven pattern is formed is adhered on the base material and the photograph. .. 2. The transparent relief sheet is a transparent relief sheet in which a protective layer is laminated on a surface opposite to the surface of the transparent layer on which the concavo-convex pattern is formed via a release layer. The identification card according to claim 1. 3. The ID card according to claim 1, wherein the breaking strength of the transparent layer is smaller than the bonding strength between the transparent relief sheet and the substrate or the photograph. 4. The identification according to any one of claims 1 to 3, wherein a part of the individual information recorded on the identification card is formed on the transparent relief sheet. Certificate.