JP2000301869A - Image acceptable sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a sheet, which is hard to be destructed even when an expected force is applied, and forged and altered, and especially, in which the defects of the convenient techniques developed at the usage in the lamination of a seal such as a hologram or the like onto an image for identification such as a photograph of a person's face or the like is overcome. SOLUTION: In cards 5, under the state that a transparent hologram 3 is formed in advance on a card base material by pasting a hologram seal or the like after the photograph of a person's face is formed, an image acceptable transparent image accepting layer is laminated on the card base material so as to form the image of the photograph of the person's face or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet having high anti-counterfeiting properties when an image is formed thereon and used, and an image formed on the sheet. The invention also relates to those in which the sheets are designed for cards such as ID cards, and more often to the field of so-called magnetic cards, in which the sheets have a magnetic recording layer.

[0002]

2. Description of the Related Art Important documents, certificates, etc., whose contents are important,
It is necessary to prevent counterfeiting or alteration due to improper intentions on certificates, documents such as various kinds of cash vouchers or check papers, etc., for which the amount is displayed directly, or papers for such purposes. And various means such as applying a color pattern. In recent years, various types of portable cards have been used, including bank cards used for deposits and savings and transfers at banks, and credit cards capable of performing transactions without cash based on contracts with credit companies. . In these cards, forgery and falsification are prevented by providing a signature column of the holder himself or attaching a hologram seal designed with a mark unique to the card issuer on the surface. Some cards do not always have direct economic value, for example, they are used as identification cards or passports, and can be accessed from a security point of view, such as important persons, bases, and financial institutions' vaults. In the case of restricting persons, forgery / falsification prevention is particularly valuable and devised. In addition, introductory certificates for general companies and schools are also valuable in preventing forgery and falsification in the sense that they prevent unwanted people from entering.

[0003] In cards, the prevention of forgery or falsification is enhanced by recording information unique to the holder, and in that sense, a face photograph or signature is used. In addition, the use of fingerprints is being considered. Strictly speaking, none of them are the same, and it is said that they are suitable as ID images for confirming the holder. In particular, face photographs are often used in cases requiring high security because they are easy to collate.

[0004] However, various conventional measures are not perfect. For example, there is an attempt to prevent forgery or falsification by applying a transparent hologram sticker from the top of the face photo, but if the pasted transparent hologram sticker comes off, the transparent hologram sticker will be placed on another face photo. May be stuck on Alternatively, there is a possibility that the original transparent hologram seal may be pasted after the photograph is pasted. Of course, these are criminal acts, but the used transparent hologram seal
At least the source is genuine, so no matter how much you look,
It is not physically fake and difficult to verify.

[0005] In view of this, the materials of the respective layers constituting the transparent hologram seal have been studied, and a part of the material has been made brittle so that it can be destroyed when it is re-attached. However, carelessly applying force has the inconvenience of destroying, despite the fact that there is no wrong will. Also, even when setting the adhesive force to break the surface of the adherend when peeling the seal,
In addition to causing the same problems as described above, a label peeling solution using a surfactant or the like is also commercially available for general label peeling, and it is not impossible to peel at all if carefully peeled. In addition, those who have unauthorized intentions will be
It is said that there are two types: those who try to give unfair profits by performing forgery and those who pursue the elaboration of the workmanship although the score of forgery and forgery is small, and the time required for forgery and forgery This is effective as a deterrent for the former type, but is not necessarily effective for the latter type.

[0006]

According to the present invention, it is difficult to break even if force is applied carelessly, and it is difficult to forge or falsify.
It is an object of the present invention to overcome the drawbacks of the prior art when used in a state of being stacked with an image for use.

[0007]

Means for Solving the Problems Conventionally, in a card or the like, a hologram seal or the like is pasted after forming a photograph of a face, but a transparent hologram or the like is first formed on a card base material. It has been found that the problem can be solved by laminating a transparent image-receiving layer capable of receiving an image thereon and forming an image such as a face photograph, and the present invention has been accomplished.

[0008] According to the first aspect of the present invention, a transparent light diffraction pattern layer is laminated on at least a part of the sheet-like substrate,
Further, the present invention relates to a sheet capable of receiving an image, wherein a transparent image receiving layer capable of receiving an image is laminated on the transparent light diffraction pattern layer. The invention according to claim 2 relates to the sheet according to claim 1, wherein the image receiving layer receives an image formed by dyeing. The invention of claim 3 relates to the sheet according to claim 1 or 2, wherein the sheet-like base material is for a card. The invention according to a fourth aspect relates to the sheet according to any one of the first to third aspects, wherein the sheet-shaped substrate has a magnetic recording layer on at least a part thereof. The invention according to claim 5 relates to the sheet having an image according to any one of claims 1 to 4, wherein an image is formed on the image receiving layer.

[0009]

FIG. 1 is a sectional view showing the most basic structure of an image-receiving sheet 1 according to the present invention.
The transparent light diffraction pattern layer 3 is laminated on a part of the upper surface of the sheet-like substrate 2, and the image receiving layer 4 is laminated on a part of the transparent light diffraction pattern layer 3. here,
The transparent light diffraction pattern layer 3 may be laminated on the entire surface of the sheet-like substrate 1 or may be laminated on a part thereof.
The sheet-like substrate 1 may be laminated not only on the upper surface but also on both surfaces. When the transparent light diffraction pattern layer 3 is laminated on both surfaces of the sheet-like substrate 1, both surfaces are laminated on the entire surface, one surface is laminated on the entire surface, and the other surface is partially laminated, or both surfaces are laminated. It can be done freely, such as by laminating parts. When the transparent light diffraction pattern layer 3 is laminated on the entire surface of the sheet-like substrate 1, the image receiving layer 4 can be formed on the transparent light diffraction pattern layer 3 even when laminated on the entire surface of the transparent light diffraction pattern layer 3. 3, the transparent light diffraction pattern layer 3 may be laminated only on the transparent light diffraction pattern layer 3 when the transparent light diffraction pattern layer 3 is partially laminated on the sheet-like substrate 1. However, it may be laminated on the transparent light diffraction pattern layer 3 and over the portion without the transparent light diffraction pattern layer. In short, in the sheet 1 capable of receiving an image of the present invention, the sheet-like base material 2, the transparent light diffraction pattern layer 3, and the transparent light diffraction pattern layer 3 have at least a part in which the portions are stacked in this order. It should just be.

The image-acceptable sheet 1 of the present invention includes various kinds of cash vouchers or documents such as check paper, or papers for such use, bank cards, credit cards, etc., as described in the prior art. The present invention can be widely applied to various portable cards and the like which need to prevent forgery and falsification. However, since it is most important to form an ID image such as a face photograph on cards, it is particularly valuable to apply the image-acceptable sheet 1 of the present invention to a card. FIG. 2 is a plan view showing the case where the present invention is applied to a card. The card 5 has a stripe-shaped magnetic recording layer 7 formed on a part of a card base material 6 and can be placed at any location. However, in this example, the transparent light diffraction pattern layer 3 is laminated on the lower left of the surface of the card base material 6, and
The image receiving layer 4 is laminated on a part of the transparent light diffraction pattern layer 3. FIG. 3 shows A of the card 5 of FIG.
FIG. 4 is a cross-sectional view taken along the line A, in which the card base material 6 is formed of a four-layer laminate in which oversheets 6b and 6b ′ are laminated above and below core sheets 6a and 6a ′. Are embedded and laminated so as to be flush with the oversheet 6b, and the transparent light diffraction pattern layer 3
The image receiving layer 4 is laminated on the oversheet 6b.

Hereinafter, each part of the sheet capable of receiving an image according to the present invention will be described.

The sheet-like substrate 1 varies depending on the use. Important documents, certificates, certificates, cash vouchers, check papers, and the like include materials that are customarily determined, and are often paper. Many are relatively thick and durable compared with office copy paper. Also, cards such as bank cards, credit cards, identification cards and pass cards are usually
The base material is a sheet such as polyvinyl chloride resin.
As described above, a laminated sheet composed of four layers is usually used as a base material. The sheet-like substrate 1 including the case according to the above-mentioned customs is paper, cardboard, resin or latex-impregnated paper, non-woven fabric, plastic sheet, or metal sheet or metal foil such as copper, aluminum, or tin, or these. Laminated sheets of the same or different sheets can be used.

The card base material 6 does not bend or break when the card holder carries it, and does not hinder running inside a machine used for writing and reading on the magnetic recording layer 7. Particularly preferred are those having strength and rigidity, and sheets of synthetic resin such as polyvinyl chloride, polyester, polycarbonate, polyamide, polyimide, cellulose diacetate, cellulose triacetate, polystyrene, polyacrylate, polypropylene, or polyethylene. Can be used.
Among these synthetic resin sheets, polyvinyl chloride resin sheets are suitable because they have processing characteristics such as printing, laminating, and forming embossed characters. Also,
Expired cards will eventually be incinerated,
In that case, the harmful gas is not easily emitted, and it is preferable that the harmful gas does not contain elements other than carbon, hydrogen, and oxygen.In addition, the ethylene glycol portion of the polyethylene terephthalate resin has the characteristics necessary for processing. It has a substantially alternating repeating structure of a glycol part and a cyclohexanedimethanol part, is amorphous, and has an intrinsic viscosity of 0.1.
It is preferable to use a polyester resin of 70 or more (trade name: Easter P from Eastman Chemical Company).
It is commercially available as ETG. ). Instead of being incinerated, a sheet of a material that decomposes over time may be used as the card base material 6. Examples of such materials include (1) degradable polyethylene by polymerization of ethylene and carbon monoxide,
(2) a mixture of a polyolefin such as polyethylene or polypropylene and an organic metal salt such as iron stearate; and (3) a mixture of a polyolefin, polycaprolactone, starch, and a polyester resin polymerized by a microorganism. Examples of the polyester resin polymerized by microorganisms include 3-hydroxybutyrate-based polyester or 3-hydroxybutyrate and 3-hydroxybutyrate.
There are copolyesters of hydroxyvalerate, both of which are British I.M. C. Polymerized by hydrogen bacteria produced by Company I. The sheet of the material that decomposes over time can be used alone, but paper may be used as the core sheet, and the sheet of the material that decomposes over time may be laminated on the front and back.

The card substrate 6 is a composite laminated sheet as described above, and has a thickness of about 10 μm to 5 mm.
In the ISO standard, the standard thickness of the card base material is 0.76 mm. For example, two white polyvinyl chloride resin sheets having a thickness of 0.28 mm are used as core sheets, and the thickness of the core sheet is 0.1 mm on both sides. Using one sheet at a time of colorless and transparent polyvinyl chloride resin sheet,
A composite laminated sheet composed of four layers having a total thickness of 0.76 mm is used. Alternatively, the core sheet is composed of a single sheet having a thickness of 0.56 mm, and an oversheet having a thickness of 0.1 mm is used on each of the front and back sides. And a thickness of 0.
Two 36mm core sheets, thickness 0.05mm on both sides
Or a three-layer structure composed of one 0.72 mm thick core sheet and two 0.05 mm thick oversheets may be used.

In the present invention, a transparent light diffraction pattern layer 3 is laminated on at least a part of the sheet-like substrate 2. Typically, it is a transparent hologram layer. However, as will be described later, there are cases other than a hologram, and these are collectively referred to as a transparent light diffraction pattern layer. When the transparent light diffraction pattern layer 3 is a diffraction grating or a hologram among diffraction gratings, the minimum configuration for visualizing the light diffraction pattern layer 3a, the light refraction layer 3a and the transparent refraction layer 3a in order from the bottom as shown in FIG. It has a laminated structure of two layers of the light diffraction pattern layer 3b, and preferably has a laminated structure of three layers in which a transparent protective layer 3c is further laminated thereon. The transparent light diffraction pattern layer 3 having such a laminated structure is such that the layers constituting the transparent light diffraction pattern layer 3 are arranged on the sheet-like substrate 2 in order from the bottom, that is, the light refraction layer 3a and the transparent light diffraction pattern layer. Although it may be formed by laminating for 3b, it may be separately manufactured and formed as a two-layer or three-layer laminate, and then laminated on the sheet-like substrate 2 via a transparent adhesive layer. .

The transparent light diffraction pattern layer 3b has a transparent light diffraction pattern on one surface of a transparent synthetic resin, usually on the lower surface in order to prevent contamination or damage, or has an inner surface in the case of a volume hologram. Have a hologram diffraction grating. The former having irregularities is more suitable for mass production by a method such as hot pressing. As the light diffraction pattern, any of a plane hologram and a volume hologram can be used. Relief hologram, Lippmann hologram, Fresnel hologram, Fraunhofer hologram, lensless Fourier transform hologram, laser reproduction hologram (image hologram, etc.), white light reproduction Examples include a hologram (rainbow hologram), a color hologram, a computer hologram, a hologram display, a multiplex hologram, a holographic stereogram, a holographic diffraction grating, and a mechanically formed diffraction grating such as an electron beam direct drawing.

The material constituting the transparent light diffraction pattern layer 3b may be a thermoplastic resin or a curable resin capable of reproducing the unevenness of the light diffraction pattern by casting or embossing, or a cured portion according to the light diffraction pattern information. A photosensitive resin composition capable of forming an uncured portion can be used. In particular,
For example, thermoplastic resins such as polyvinyl chloride, acrylic (polymethyl methacrylate), polystyrene, or polycarbonate, unsaturated polyester, melamine, epoxy, polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, poly It is a thermosetting resin such as ether (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, or triazine acrylate, and is used alone, thermoplastic resins, or a mixture of thermosetting resins, or A mixture of a thermoplastic resin and a thermosetting resin may be used. A resin having a radical polymerizable unsaturated group and having thermoformability, and an ionizing radiation curable resin composition to which a radical polymerizable unsaturated monomer is added can also be used. The thickness of the transparent light diffraction pattern layer 3b is 1 to
The thickness is preferably about 2 μm. When a coating composition such as an ionizing radiation-curable resin composition is used, a transparent synthetic resin film is preferably used as an object to be coated.

The transparent light diffraction pattern layer 3b alone has no visibility or is very low. Therefore, an aluminum reflection film is usually provided, but in the present invention,
Normally, characters and pictures printed on the sheet-like base material 2 below the light diffraction pattern layer are also visually recognized.
There is a problem with a mere reflection layer. In this sense, the transparent light diffraction pattern layer 3b is formed with a light refraction layer 3a made of a transparent thin film of a substance having a different refractive index of light to cause refraction, thereby giving visibility of a light diffraction pattern such as a hologram. . The light refraction layer 3a may be referred to as a reflective layer having transparency. Specifically, there are a thin film having a higher refractive index of light and a thin film having a lower refractive index of light than the transparent light diffraction pattern layer 3b. Examples of the former are ZnS, TiO ₂ , Al ₂ O ₃ , and Sb.
₂ S ₃ , SiO ₂ and the like.
F, MgF ₂ and AlF ₃ . A general light-reflective metal thin film such as aluminum also becomes transparent when the thickness is 200 ° or less, so that a transparent material made of a material having a different refractive index from the transparent light diffraction pattern layer 3b as described above. Since it has the same effect as a thin film, it can be used. Further, a transparent synthetic resin having a different refractive index of light from the transparent light diffraction pattern layer 3b may be used.

As the synthetic resin constituting the transparent light diffraction pattern layer 3b, it is desirable to select and use a hard resin having excellent abrasion resistance and contamination resistance. In order to further enhance the strength, it is preferable to laminate a transparent protective layer 3c as another layer. As the resin forming the protective layer 3c, a thermoplastic resin may be used, but a thermosetting resin composition using a thermosetting resin, or an ionizing radiation-curable resin composition cured by irradiation with ultraviolet rays or electron beams Using a curable compound such as, heating after application,
Irradiation with ionizing radiation for crosslinking and curing can further improve physical and chemical properties.
The thickness of the protective layer 3c is preferably about 2 μm from the viewpoint of strengthening the protective function and reducing the thickness. The ionizing radiation-curable resin composition is obtained by appropriately mixing a prepolymer, an oligomer, and / or a monomer having a polymerizable unsaturated bond or an epoxy group in a molecule. Ionizing radiation refers to electromagnetic waves or charged particle beams having energy quanta that can polymerize or crosslink molecules, and usually use ultraviolet rays or electron beams.

Examples of the prepolymer and oligomer in the ionizing radiation-curable resin composition include unsaturated polyesters such as condensates of unsaturated dicarboxylic acids and polyhydric alcohols, polyester methacrylates, polyether methacrylates, polyol methacrylates, melamines. Methacrylates such as methacrylate, polyester acrylate,
Examples include acrylates such as epoxy acrylate, urethane acrylate, polyether acrylate, polyol acrylate, and melamine acrylate, and cationic polymerization type epoxy compounds. To these prepolymers and oligomers, a polyfunctional monomer or a monofunctional monomer may be used by mixing one or more as necessary.
In order to provide the ionizing radiation-curable resin composition with normal coating suitability, the prepolymer or oligomer is added in an amount of 5% by weight.
As described above, the monomer and / or polythiol compound
It is preferably at most 5% by weight.

When flexibility is required when the ionizing radiation-curable resin composition is applied and cured, the amount of the monomer may be reduced, or an acrylate monomer having one or two functional groups may be used. . When abrasion resistance, heat resistance, and solvent resistance when applying and curing an ionizing radiation-curable resin composition are required, use ionizing radiation such as using an acrylate monomer having three or more functional groups. It is possible to design a curable resin composition. Here, the functional group is 1
Examples thereof include 2-hydroxyacrylate, 2-hexyl acrylate, and phenoxyethyl acrylate. Examples of those having two functional groups include ethylene glycol diacrylate and 1,6-hexanediol diacrylate. Examples of the compound having three or more functional groups include trimethylolpropane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, and dipentaerythritol hexaacrylate.

When the ionizing radiation-curable resin composition is cured by ultraviolet irradiation after application, a photopolymerization initiator or a photopolymerization accelerator is added. As the photopolymerization initiator, in the case of a resin system having a radically polymerizable unsaturated group, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether or the like is used alone or as a mixture. In the case of a resin system having a cationically polymerizable functional group, an aromatic diazonium salt, an aromatic sulfonium salt, an aromatic iodonium salt, a metaceron compound, a benzoin sulfonic acid ester, or the like is used alone or as a mixture as a photopolymerization initiator. . The addition amount of the photopolymerization initiator,
0.1 parts by weight based on 100 parts by weight of the ionizing radiation-curable resin composition.
It is 1 to 10 parts by weight.

On the transparent light diffraction pattern layer 3 (actually, it has a laminated structure of two or three layers, and is laminated on the sheet-like substrate 2 via an adhesive layer as necessary. ), And the image receiving layer 4 is laminated. As the image receiving layer 4, a transparent resin layer capable of receiving an image may be independently laminated on the transparent light diffraction pattern layer 3 or may be laminated via an adhesive layer. As shown in (1), what is obtained by laminating the image receiving layer 4b on another transparent substrate 4a may be laminated as it is or on the transparent light diffraction pattern layer 3 via an adhesive layer. Or,
The image receiving layer 4 is formed on another temporary base material so as to be peelable, and then laminated on the transparent light diffraction pattern layer 3 by a thermal transfer method or a transfer method performed through an adhesive. It may be formed by peeling and removing the base material. As the material of the adhesive layer when the adhesive layer is interposed, polyvinyl chloride resin, polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, acrylic resin, polyester resin, polyurethane resin, polyamide resin It is preferable to use a resin, a modified rubber, or the like.

Examples of the image formation on the image receiving layer 4 include transfer performed using a sublimation transfer sheet. Sublimation transfer sheet is a heat-resistant film such as polyester film, the transfer layer is formed with a paint containing a sublimable dye,
The transfer layer of this transfer sheet is overlapped with a receiving layer made of a resin coating which is easily dyed, which is laminated on paper or the like, and is heated in a dotted manner from the back of the transfer sheet by a thermal head or the like. The volume of the dye corresponding to the amount of heat generated is transferred and dyed. By changing the heating location and performing the same heating, a light and shade image is generated in the receiving layer. Then, as a transfer sheet, a transfer sheet for color image formation, which is painted for red, blue, yellow, and, if necessary, black, is used, and based on information of a color separation image corresponding to each color. In this case, a full-color image can be formed by performing transfer in the same area of the receiving layer. Therefore, the formed image is formed by dyeing the image receiving layer 4 with the dye.

Specific resins constituting the image receiving layer 4 include polyolefins such as polypropylene, halogenated resins such as polyvinyl chloride or polyvinylidene chloride, vinyl resins such as polyvinyl acetate or polyacrylate, and the like. The copolymer, a polyester resin such as polyethylene terephthalate or polybutylene terephthalate, a polystyrene resin, a copolymer of an olefin such as ethylene or propylene with another vinyl monomer,
Polyurethanes, polycarbonates, ionomers, cellulose derivatives and the like can be used alone or in combination, and among them, polyester resins or vinyl resins are preferable. In order to prevent the image receiving layer 4 from being thermally fused with the transfer layer of the transfer sheet due to heat during image formation, various release agents are added to the image receiving layer 4 in addition to these resins. Good. As the release agent, a phosphate ester-based plasticizer, a fluorine-based compound, and silicone oil can be used. Among them, a silicone oil composed of various modified silicones including dimethyl silicone is preferable,
Specifically, amino-modified silicone, epoxy-modified silicone, alcohol-modified silicone, vinyl-modified silicone, and urethane-modified silicone are used, and they are used alone, in combination, or polymerized. The amount of the release agent added is 10 parts by weight of the resin constituting the image receiving layer 4.
About 0.5 to 30 parts by weight, or a separate release layer on the image receiving layer 4 having a thickness of 0.05 to 2.0 parts by weight.
It may be formed to about μm. The above resin, and the release agent, if necessary, dissolved or dispersed together with a solvent, diluent, and other additives to form a paint, roll coating, gravure coating, or applied by extrusion coating, etc. After drying, an image receiving layer 4 is obtained.

The magnetic recording layer 7 is usually in the form of a stripe having a width of about 6 mm. The magnetic recording layer 7 is provided directly on the surface of the card base material 6 by using a paint prepared by adding and kneading a magnetic substance, or a thin plastic sheet. Using a magnetic recording layer transfer sheet prepared by applying to a base material such as, and cutting and pasting it in a stripe shape, or by temporarily laminating and releasable on a temporary base material,
It is formed by a transfer method. In addition to using a paint prepared by adding and kneading a magnetic substance, a method of forming a thin film of a magnetic substance in a gas phase state by vapor deposition or sputtering of a magnetic substance to form a magnetic recording layer 2 or a stripe It may be cut and pasted in a shape or applied by transfer. The magnetic recording layer 2 is formed by lamination on the oversheet 6b or 6b ', and then hot-pressed using a heating press machine, as shown in FIG. 6b, the surface of the magnetic recording layer 7 and the surface of the card substrate 6 are on the same plane without any level difference.

The sheet capable of receiving an image according to the present invention may be formed with various recording means and ID means. For example, a printing layer for necessary characters and explanations, embossed characters, writing The active layer, the optically recordable optical recording layer, the IC or the LSI, or the like may be arbitrarily selected and formed on the front surface or the back surface, or between appropriate layers. In particular, in card applications, it is often the case that some of these recording means and ID means are selected and formed.

[0028]

According to the first aspect of the present invention, since the transparent light diffraction pattern layer and the image receiving layer do not form a special brittle portion, they are not damaged even when handled normally. It is difficult to peel off only the image receiving layer because it is adhered by the adhesive force, and it is difficult to perform forgery / falsification as it is because it has a transparent light diffraction pattern layer underneath. . According to the invention of claim 2,
In addition to the effects of the first aspect of the present invention, since the image is formed by dyeing, a fine image is obtained and the image is resistant to abrasion. According to the invention of claim 3, in addition to the effects of the invention of claim 1 or 2, there is convenience as a card and a high security effect. According to the invention of claim 4, the information by the normal magnetic recording according to any one of claims 1 to 3 can be used,
High versatility. According to the invention of claim 5, claims 1 to 4
In addition to the effects of any of the inventions, the image is formed on the image receiving layer, and the light diffraction pattern of the lower layer is normally adhered, and a seal such as a hologram is laminated with an ID image such as a face photograph. The disadvantages of the prior art when used in a conventional manner can be eliminated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a basic configuration of a sheet capable of receiving an image.

FIG. 2 is a plan view of an example applied to a card.

FIG. 3 is a sectional view of the card.

FIG. 4 is a cross-sectional view showing details of a transparent light diffraction pattern layer.

FIG. 5 is a sectional view showing details of an image receiving layer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image-acceptable sheet 2 Sheet-shaped base material 3 Transparent light diffraction pattern layer 4 Image-receiving layer 5 Card 6 Card base material 7 Magnetic recording layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03H 1/18 G11B 5/80 5D006 G06K 19/06 B41M 5/26 101H G11B 5/80 G06K 19/00 B D (72) Inventor Takehiro Shimizu 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Dai-Nippon Printing Co., Ltd. F-term (reference) 2C005 HA01 HB01 HB07 HB09 HB10 JA02 JA08 JA11 JA26 JB02 JB08 JB09 KA01 KA37 KA40 KA41 KA45 KA45 KA48 LA02 LA11 LA18 LA19 LA20 LA22 LA29 LA30 LB08 2H049 CA05 CA09 CA15 CA22 2H111 AA01 AA07 AA27 CA03 CA04 CA11 CA25 CA41 2K008 AA13 DD12 EE04 FF02 FF03 FF11 FF17 FF21 FF27 GG05 5B01 A01BA01 BA01 BA01 BA01 BA01 BA01 BA01 BA01 FA00

Claims (5)

[Claims] 1. A transparent light diffraction pattern layer is laminated on at least a part of a sheet-like substrate, and a transparent image receiving layer capable of receiving an image is further laminated on the transparent light diffraction pattern layer. An image-receiving sheet capable of receiving an image. 2. The sheet according to claim 1, wherein the image receiving layer receives an image formed by dyeing. 3. The sheet according to claim 1, wherein the sheet-like substrate is for a card. 4. The sheet-like substrate according to claim 1, wherein the sheet-like substrate has a magnetic recording layer on at least a part thereof.
3. The sheet according to any one of to 3 above. 5. The sheet having an image according to claim 1, wherein an image is formed on the image receiving layer.