JPH068648A - Card and production thereof - Google Patents

Abstract

PURPOSE:To provide a card forming an arbitrary beautiful photograph like image by a dye and excellent in various durabilities such as friction resistance, weatherability or the like. CONSTITUTION:A card is characterized by that a dye receiving layer 2 having an image formed thereon by a dye is laminated on the surface of a card substrate so that the image forming surface thereof is turned toward the surface of a base sheet and a transparent film 1 is laminated on the upper surface of the dye receiving layer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card and a method for manufacturing the card, and more specifically, it can form an arbitrary beautiful and photographic image with a sublimable dye (hereinafter simply referred to as a dye), and has abrasion resistance and weather resistance. It is intended to provide a card having various durability such as

[0002]

2. Description of the Related Art In recent years, along with the development of image technology such as precision thermal printers, various methods have been proposed for forming a precise image on a plastic film from a thermal transfer sheet having a dye layer, which is comparable to a photograph. . According to this method, for example, a hard copy of a camera, an image, a television image or a graphic image of a personal computer can be easily formed on a paper having a polyester layer. You have reached a level where you can fully compete.

[0003]

The above-mentioned thermal transfer technique has an advantage that an arbitrary image can be easily formed, but the transfer-receiving sheet is limited to a material such as polyester which can be dyed with a dye. There is a problem that On the other hand, the transferred article is limited to a sheet-like material such as a film or a sheet, and for example, an image cannot be formed on wood, metal, glass, ceramics, etc. Even if it is a plastic molded product such as a plastic molded product, an image is formed on a three-dimensional molded product other than a sheet-shaped product even if its image forming surface is a curved surface, has an uneven shape, or is flat. The problem is that it is difficult.

In particular, as the fields of use of various cards such as cash cards have expanded in recent years, it is necessary to give images and symbols to these cards to give them various functions and decorations. It is also difficult to apply an image to these cards by the above-mentioned thermal transfer method because they are inflexible even if they are flat, or because uneven portions such as characters and symbols are formed. Therefore, an object of the present invention is to provide a card in which an arbitrary beautiful and photographic image is formed by the dye and which is excellent in various durability such as abrasion resistance and weather resistance.

[0005]

The above object can be achieved by the present invention described below. That is, in the present invention, a dye receiving layer image-formed with a dye is laminated on the surface of a card substrate with the image forming surface thereof facing the substrate sheet side, and the upper surface of the image receiving dye receiving layer. A transparent film is laminated on the card, and a method for manufacturing the card.

[0006]

A dye-receptive layer image-formed with a dye is laminated on the surface of a card substrate, with the image-forming surface of the substrate sheet surface side, and a transparent film is formed on the upper surface of the image-formed dye-receptive layer. It is possible to provide a card in which an arbitrary beautiful and photographic image is formed by the dye and the durability is excellent in various durability such as abrasion resistance and weather resistance.

[0007]

The present invention will now be described in more detail with reference to the accompanying drawings, which schematically show the preferred embodiments.
FIG. 1 is a diagram schematically showing a basic embodiment of a transfer sheet used in the present invention, and FIGS. 2 to 3 are views showing other preferred embodiments of the transfer sheet used in the present invention. is there. As shown in FIG. 1, the transfer sheet 10 used in the present invention has a basic structure in which a dye receiving layer (hereinafter simply referred to as a receiving layer) 2 is provided on one surface of an arbitrary transparent film 1.

With the transfer sheet used in the present invention having such a constitution, a desired image is formed on the receiving layer 2 by the thermal transfer sheet having a dye layer, and then the transfer sheet having the image is optionally formed. The card of the present invention can be obtained by facing the sticking surface of the card base material and sticking to the card base material by any means. That is, the receiving layer 2 in the above is limited to a material that can be dyed with a dye, but the transfer sheet on which an image is formed can be reversed by an adhesive method according to the material of the card substrate. Can be attached. Further, since such an image sheet has sufficient flexibility, even if the surface shape of the card substrate is a curved surface or an uneven surface, it is possible to sufficiently follow those surface shapes. Adhesion is not restricted by the surface shape of the card substrate. In addition, since the surface of the image sheet adhered in this manner is covered with a transparent film, no further means is required,
It is possible to provide a card having sufficient abrasion resistance, water resistance, chemical resistance and the like.

FIG. 2 shows a transfer sheet 10 used in the present invention.
Another preferable example of the release layer 3 is shown on the surface of the receiving layer 2.
Is provided. The release layer 3 is for preventing the thermal transfer sheet and the receiving layer 2 from sticking to each other when heat is transferred when a dye is transferred from a thermal transfer sheet (not shown) to form an image on the receiving layer 3. It is not necessary when such sticking does not occur or when such a release layer is provided on the surface of the thermal transfer sheet. The example of FIG. 3 shows another preferable example of the transfer sheet 10 used in the present invention.
An intermediate layer 4 is provided between the receiving layer 2 and the transparent film 1. The intermediate layer 4 referred to here is one that sufficiently forms an image when a dye is transferred from the thermal transfer sheet to the receiving layer 2 to form an image, and is, for example, a cushion layer or a heat insulating layer. For example, by providing a layer having a cushioning property as the intermediate layer 4, the adhesion between the thermal transfer sheet and the receiving layer 2 is improved, the transfer of the dye during image formation by the thermal head is made uniform, and it is sufficiently compatible with the image signal. The formed image can be formed.

Further, by forming the intermediate layer 4 from a material having a heat insulating property as a heat insulating layer, it is possible to prevent the heat given off when the dye is transferred from the thermal transfer sheet to the receiving layer 2, The heat utilization efficiency is improved and formation of a sufficient image is promoted. Of course, these cushion layers or heat insulating layers may be provided separately or may be provided simultaneously in any order. Such an intermediate layer is applied to the card base material after being image-formed on the transfer sheet used in the present invention by reversing and adhering it. It needs to be transparent. The above is the main configuration of the transfer sheet used in the present invention, and various modes other than the preferable examples are obvious to those skilled in the art, and these obvious modes are naturally included in the present invention.

Next, the method for producing the card of the present invention will be described. Preferably, the method for producing the card of the present invention utilizes the transfer sheet used in the present invention as described above. As a basic mode, a method illustrated in FIGS. 4 to 5 will be described. In the example of FIG. 4, the transfer sheet of FIG. 1 is used. First, a conventionally known thermal transfer sheet 20 having a dye as a recording material is first used as the transfer sheet 10, and the dye layer 21 of the thermal transfer sheet is used as the transfer sheet. 10 so as to face the receiving layer 2 and apply thermal energy (arrow) from either side of the thermal transfer sheet 20 or the transferred sheet 10, preferably the thermal transfer sheet 20 side in accordance with the image signal from the thermal head, A desired image 5 is formed on the receiving layer 2. Next, the transfer sheet having the image thus formed is placed on the card substrate 30 so as to face it, and is adhered by an appropriate adhesive means (FIG. 5), thereby completing the card manufacturing method of the present invention. Further, since the receiving layer 2 is generally formed of a thermoplastic resin which can be dyed with a dye, it is possible to heat-bond it to the card substrate as it is without any adhesive, and it is also suitable. A different adhesive layer 6 may be used.

Although the card manufacturing method of the present invention has been described above with reference to a basic example, when the card manufacturing method of the present invention is carried out using the transfer sheet used in the present invention illustrated in FIG. Is also the same. Next, the present invention will be described in more detail with respect to the materials and the method of constituting the transfer sheet used in the present invention as described above. The transparent substrate film is a film that is transparent to the extent that it does not hide the image formed in the receiving layer, and has excellent surface physical properties such as abrasion resistance, for example, polyolefin, polyvinyl chloride,
Films of various plastics such as polyethylene terephthalate, polystyrene, polymethacrylate, and polycarbonate, or those obtained by variously treating the surfaces thereof can be used. If such a transparent film is too thick, the image will rise when attached to the card substrate,
Since there is no sense of unity with the card substrate, for example, 0.5
The thickness is preferably about 50 μm.

The material constituting the receiving layer is a material that receives a dye that migrates from the thermal transfer sheet, for example, a sublimable disperse dye,
It is for maintaining the image formed by receiving.
For example, the following synthetic resins (a) to (e) can be used alone or as a mixture of two or more kinds. (A) Those having an ester bond. Polyester resin,
Polyacrylic ester resin, polycarbonate resin,
Polyvinyl acetate resin, styrene acrylate resin, vinyl toluene acrylate resin, etc. (B) Those having a urethane bond. Polyurethane resin etc. (C) Those having an amide bond. Polyamide resin (nylon). (D) Those having a urea bond. Urea resin etc. (E) Others having a highly polar bond. Polycaprolactone resin, polystyrene resin, polyvinyl chloride resin, polyacrylonitrile resin, etc.

The receiving layer is made of a mixed resin of saturated polyester and vinyl chloride-vinyl acetate copolymer. As the saturated polyester, for example, Byron 20
0, Byron 290, Byron 600, etc. (above, Toyobo), KA-1038C (Arakawa Kagaku), TP220,
TP235 (above, manufactured by Nippon Gosei) or the like is used. The vinyl chloride-vinyl acetate copolymer preferably has a vinyl chloride component content of 85 to 97% by weight and a degree of polymerization of about 200 to 800. The vinyl chloride-vinyl acetate copolymer is not limited to the case where it is a copolymer of only a vinyl chloride component and a vinyl acetate component, and contains a vinyl alcohol component, a maleic acid component, etc. within a range not hindering the object of the present invention. May be The receiving layer may also be composed of a polystyrene resin, for example, a styrene monomer such as styrene, α-methylstyrene, a polystyrene resin made of a homopolymer or copolymer of vinyltoluene, or Examples thereof include a styrene copolymer resin which is a copolymer of a styrene monomer and another monomer, for example, an acrylic or methacrylic ester, acrylonitrile, methacrylonitrile, or other acrylic or methacrylic monomer or maleic anhydride. . Among the above synthetic resins, polyester resins are particularly preferable.

In any of the above embodiments, the whiteness of the receiving layer is improved to further improve the sharpness of the transferred image, the writing property is imparted to the surface of the transferred sheet, and the retransfer of the transferred image is prevented. A white pigment can be added to the receiving layer for the purpose. As the white pigment, titanium oxide, zinc oxide, kaolin clay, calcium carbonate, fine powder silica, and the like are used, and as described above, two or more kinds thereof can be mixed and used. Further, in order to further enhance the light resistance of the transferred image, an ultraviolet absorber and / or
Alternatively, a light stabilizer can be added. The amount of each of these ultraviolet absorbers and light stabilizers added is 0.05 to 10 parts by weight with respect to 100 parts by weight of the resin constituting the receiving layer.
0.5 to 3 parts by weight is preferable.

The transfer sheet used in the present invention has a releasable layer on one side or both sides of the receptive layer in order to improve releasability between the thermal transfer sheet and the receptive layer and the transparent film. It is possible to form a layer, or alternatively, a release agent may be contained in the receiving layer. Examples of the release agent include solid waxes such as polyethylene wax, amide wax and Teflon powder; fluorine-based and phosphoric acid ester-based surfactants; silicone oil and the like, with silicone oil being preferred.

As the silicone oil, oily ones can be used, but curable ones are preferable. Examples of the curable silicone oil include a reaction curable type, a photocurable type and a catalyst curable type, and a reaction curable type silicone oil is particularly preferable. The reaction-curable silicone oil is preferably a reaction-cured amino-modified silicone oil and an epoxy-modified silicone oil, and the amino-modified silicone oil is KF-39.
3, KF-857, KF-858, X-22-368
No. 0, X-22-3801C (above, manufactured by Shin-Etsu Chemical Co., Ltd.) and the like.
KF-100T, KF-101, KF-60-164,
KF-103 (above, Shin-Etsu Chemical Co., Ltd.) etc. are mentioned. As the catalyst-curable or photocurable silicone oil, KS-705F, KS-770 (above, catalyst-curable silicone oil: manufactured by Shin-Etsu Chemical Co., Ltd.), KS-72
0, KS-774 (above, photocurable silicone oil:
Shin-Etsu Chemical Co., Ltd.) and the like. The amount of the curable silicone oil added is 0.5 of the resin constituting the receiving layer.
-30% by weight is preferred.

It is also possible to provide a release layer on a part of the surface of the receiving layer by dissolving or dispersing the above-mentioned release agent in an appropriate solvent and applying the solution, followed by drying. As the release agent constituting the release layer, a reaction-curable type of the above amino-modified silicone oil and epoxy-modified silicone oil is particularly preferable. The thickness of the release layer is 0.01 to 5 μm,
It is particularly preferably 0.05 to 2 μm. If silicone oil is added during the formation of the receiving layer, the silicone oil will bleed out on the surface after application, so it is possible to form a release layer even after curing after bleeding out. I can.

The receiving layer is formed by a known coating or printing method using a composition for forming a receiving layer obtained by dissolving or dispersing a material for forming the receiving layer on a transparent film. Alternatively, the receiving layer may be formed on a temporary carrier different from the transparent film and then transferred onto the transparent film again. A sheet having a releasable surface is used as the temporary carrier. For example,
(1) A surface of cellulose fiber paper, synthetic paper, or the like, on which an undercoat layer is applied, and then a release silicone layer is applied,
(2) The surface of cellulose fiber paper is extrusion coated with a polyolefin resin or polyester resin, or (3) the surface of a plastic film such as polyester film is coated with a releasing silicone layer.

A receiving layer is formed on the temporary carrier in the same manner as on the transparent film, and then an adhesive layer is formed, if necessary. This adhesive layer is for ensuring the adhesive force between the transparent film and the receiving layer when the receiving layer is transferred onto the transparent film. In this method, another layer, for example, an intermediate layer which imparts cushioning properties may be formed on the temporary carrier, and the intermediate layer and the receiving layer may be transferred onto the transparent film at once. . When the intermediate layer also serves as the adhesive layer, the adhesive layer may not be formed on the temporary carrier. In any case, since the adhesive layer may be interposed between the transparent film and the uppermost layer on the temporary carrier, the adhesive layer is formed on the transparent film and the temporary carrier is not formed on the temporary carrier. The transfer may be performed by forming the receiving layer alone or the receiving layer and the intermediate layer in order.

When the method of once forming the receiving layer on the temporary carrier and then forming it on the transparent film by the transfer method is adopted, the surface of the receiving layer formed on the transparent film is
Since the surface condition of the temporary carrier is transferred, the smoothness is very excellent, and the receiving layer formed directly on the transparent film is inferior in smoothness to that by the transfer method and is more vivid. If you want to obtain a precise image with, transfer method is recommended.

Any adhesive can be used as long as it can bond the receiving layer and the transparent film, and it is possible to use polyester-based, polyacrylic ester-based, polyurethane-based, polyvinyl chloride-based, polyolefin-based, ethylene-vinyl acetate-based adhesives. Organic solvent solutions or emulsions of polymers, synthetic rubbers, etc. can be used. The adhesive may be a heat adhesive type or a room temperature adhesive type. In the case of the heat-bonding type, heat-bonding with a hot-melt type adhesive such as wax, ethylene-vinyl acetate copolymer resin, polyolefin, or petroleum resin, or suditch laminating with an extrusion film such as a polyolefin film may be used. . A double-sided tape may be used as an adhesive layer that also serves as an intermediate layer. The double-sided tape is a rayon paper impregnated with an acrylic adhesive and dried, and the double-sided tape after drying has fine pores and is considered to play a role equivalent to a foam layer.

The intermediate layer is either a cushioning layer or a porous layer depending on the constituent material, or in some cases also serves as an adhesive layer. The cushioning layer is JIS-
100% modulus specified in K-6301 is 100
The resin mainly has a Kg / cm ² or less, and when the 100% modulus is more than 100 Kg / cm ² , the rigidity is too high, and the intermediate layer is formed using such a resin. However, sufficient adhesion between the thermal transfer sheet and the receiving layer during printing cannot be maintained. Also, the lower limit of the 100% modulus is actually about 0.5 Kg / cm ² .

The following resins may be mentioned as resins that meet the above conditions. Polyurethane resin, polyester resin, polybutadiene resin, polyacrylic acid ester resin, epoxy resin, polyamide resin, rosin-modified phenol resin, terpene phenol resin, ethylene / vinyl acetate copolymer resin, etc. The above resins can be used alone or in combination of two or more. However, since the above resins have a comparatively adhesive property, if there is a problem during processing, an inorganic additive such as , Silica, alumina, clay, calcium carbonate, etc., or an amide-based substance such as stearic acid amide may be added.

The cushioning layer is prepared by kneading the above-mentioned resin with other additives, if necessary, and a solvent, a diluent or the like to prepare a paint or an ink, and drying it as a coating film by a known coating method or printing method. The thickness is 0.5 to 50 μm, and more preferably about 2 to 20 μm. If the thickness is less than 0.5 μm, the roughness of the surface of the provided transparent film cannot be absorbed, and thus there is no effect. On the contrary, if the thickness exceeds 50 μm, the effect is not improved and the receiving layer becomes too thick and protrudes. , It becomes a hindrance when winding or stacking, and it is not economical. When such an intermediate layer is formed, it is considered that the adhesion between the thermal transfer sheet and the transfer target sheet is improved because the intermediate layer itself has low rigidity and therefore is deformed by the pressure during printing. It is presumed that the resin as described above usually has a low glass transition point and a softening point, and the thermal energy applied at the time of printing further contributes to lowering the rigidity and deforming it more easily than at room temperature. It

The porous layer is 1) a layer in which a synthetic resin emulsion such as polyurethane or a synthetic rubber latex such as methylmethacrylate-butadiene is foamed by mechanical stirring and applied on a transparent film and dried. A layer in which a liquid obtained by mixing a foaming agent with the synthetic resin emulsion or the synthetic rubber latex is applied on a transparent film and dried,
3) A layer formed by applying a liquid obtained by mixing a synthetic resin such as vinyl chloride plastisol, polyurethane or the like or a synthetic rubber such as styrene-butadiene type with a foaming agent onto a transparent film and foaming it by heating, 4) a thermoplastic resin or synthetic rubber A non-solvent (having water as a main component) that has a solubility in an organic solvent, is less likely to evaporate than the organic solvent, is compatible with the organic solvent, and is insoluble in the thermoplastic resin or the synthetic rubber. A microporous layer or the like formed by coating a mixed solution of the above-mentioned one) on a transparent film and drying it to form a microscopically agglomerated film.

Since the layers 1) to 3) have large bubbles, when the solution for forming the receiving layer is applied onto the layer and dried, the surface of the dried receiving layer has irregularities. May occur. Therefore, in order to obtain a surface of the receiving layer which is capable of transferring an image having small unevenness and high uniformity, it is preferable to provide the microporous layer of 4) as a porous layer.

Examples of the thermoplastic resin used for forming the microporous layer include saturated polyester, polyurethane, vinyl chloride-vinyl acetate copolymer, cellulose acetopropionate and the like. Examples of the rubber include styrene-butadiene type, isoprene type and urethane type. In addition, various organic solvents and non-solvents can be used in forming the microporous layer.
A hydrophilic solvent such as methyl ethyl ketone or alcohol is used as the organic solvent, and water is used as the non-solvent. The thickness of the porous layer in the present invention is preferably 3 μm or more, and particularly preferably 5 to 20 μm.
When the thickness of the porous layer is less than 3 μm, the cushioning effect and the heat insulating effect are not exhibited. Although the description has been mixed up, the intermediate layer may also serve as the adhesive layer as described in the method for forming the receiving layer. The above-mentioned intermediate layer may be provided on both sides of the transfer sheet, or may be provided on only one side.

An antistatic agent may be contained in at least one surface of the receptive layer or on the surface of the receptive layer in order to suppress generation of static electricity during processing of the transfer sheet or during running in a printer. Antistatic agents include surfactants such as cationic surfactants (eg, quaternary ammonium salts, polyamine derivatives, etc.), anionic surfactants (eg, alkyl sulfonates, etc.), zwitterionic surfactants. Examples include activators or nonionic release agents.
The antistatic agent may be formed by coating on the surface of the receiving layer by gravure coating, bar coating, or the like, or may be kneaded into the resin for the receiving layer and transferred to the surface of the receiving layer during coating and drying of the receiving layer. A cationic acrylic polymer can also be used as the antistatic agent mixed with the receiving layer resin.

The transfer-receiving sheet used in the present invention may have at least part of one surface or both surfaces capable of being recorded by another method. A typical example is to provide a writable layer with an aqueous pen or pencil. For the writable layer, the transparent film surface may be used as it is by not providing the receiving layer partially, but by arranging the resin layer containing the extender pigment with the receiving layer or by providing it on the receiving layer. You may form. The above is the configuration of the transfer sheet used in the present invention, but a preferable method for forming a desired image on such a transfer sheet is a method using a thermal transfer sheet provided with a dye layer on a transparent film. is there. Both the thermal transfer sheet itself and the transfer method used in this method are known, and all of these known thermal transfer sheets and transfer methods are useful in the present invention. Also, by such a transfer method, both a mono-color image and a full-color image can be easily formed.

For example, a conventionally known thermal transfer sheet is overlaid on the transfer sheet used in the present invention, and any conventionally known transfer device such as a thermal printer (for example, thermal printer TN-5400 manufactured by Toshiba). A desired image can be formed in the receiving layer of the transfer sheet used in the present invention by applying thermal energy of 5 to 100 mJ / mm ² by the apparatus described above. In the method for producing a card of the present invention using the film on which an image as described above is formed, the image surface is attached so as to face the card base material. By such a method, the transparent film as the substrate can be used as it is as a protective layer for images. In the present invention, it is preferable that the image to be formed for the above reason is formed in advance as an image having a mirror surface relationship.

As described above, the card manufacturing method of the present invention uses the above-mentioned transfer-receiving sheet, and except that the image is reversed and then adhered, the image forming method and the method for adhering to the card substrate. Can be any conventionally known method,
Also the card base material that is the target of the method for manufacturing a card of the present invention,
The material and shape thereof are not particularly limited, and examples thereof include card base materials such as cash cards, credit cards, members cards, greeting cards, postcards, business cards, and IC cards.

[0033]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. In the text, parts and% are based on weight unless otherwise specified. Example 1 A polyester film (thickness: 6 μm) was used as a substrate, a polyester resin-based primer was applied to one side of the substrate and dried, and an ink for forming a receiving layer having the following composition was further applied thereon, and the weight after drying was 7 g / m ² And coated and dried. Ink for forming receptive layer Polyester resin (Voylon 200 manufactured by Toyobo) 100 parts Amino-modified silicone (KF-393 manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Epoxy-modified silicone (X-22-343 manufactured by Shin-Etsu Chemical Co., Ltd.) 5 parts Solvent (methyl ethyl ketone) / Toluene / Cyclohexanone = 4/2/2) 900 parts

After the above ink was applied and dried, the ink was allowed to stand for 1 day and then heated at a temperature of 100 ° C. for 30 minutes to cause silicone to bleed out on the surface to obtain a receiving layer having a cured silicone layer on the surface. A thermal head in which a sublimation thermal transfer film carrying a cyan dye (having a molecular weight of 250 or more) supported by a binder resin is overlaid on the obtained receiving layer and the electric signal of the cyan component obtained by color-separating a facial photograph is obtained. Was applied with heat energy to obtain a cyan image.
Then, a sublimation thermal transfer film using a magenta dye (having a molecular weight of 250 or more) and a yellow dye (having a molecular weight of 2) are used.
Sublimation transfer was performed in the same manner with a sublimation heat transfer film using 50 or more) to form a display image consisting of a full-color facial photograph and other characters and figures.

The receiving layer side of the film on which the display image is formed is overlaid on a card substrate made of a white opaque hard vinyl chloride resin sheet having a thickness of 100 μm and pressure-bonded with a heat roller at 200 ° C. to have a display image. A card of the present invention having a receptive layer laminated thereon was obtained. The surface of this card was smooth on the whole, and there was no swelling in the image area. Further, the image of this card did not show image distortion or delamination at all even in the accelerated test of keeping it in an atmosphere of 40 ° C. for 3 months. In addition, a JIS light resistance test using a carbon arc lamp revealed that the results were JIS 4 to 5 grades, indicating good performance. It also showed good resistance to scratches on the surface.

[0036]

[Effects] According to the present invention as described above, it is possible to form an image by a dye regardless of the material of the card base material on which it has been impossible or difficult to form and impart an image. Images can be added freely. Moreover, according to the present invention, unlike the conventional so-called picture sticker, since the film having an image according to the present invention is thin, even if it is attached to a card substrate, they are sufficiently integrated and attached. It has excellent aesthetics, function and durability without giving a feeling of wearing.

[0037]

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a cross section of a transfer sheet used in the present invention.

FIG. 2 is a diagram schematically showing a cross section of a transfer sheet used in the present invention.

FIG. 3 is a diagram schematically showing a cross section of a transfer target sheet used in the present invention.

FIG. 4 is a diagram schematically showing image formation by a thermal transfer sheet.

FIG. 5 is a diagram schematically showing a cross section of a card.

[Explanation of symbols]

 1; Transparent film 2; Receptor layer 3; Release layer 4; Intermediate layer 5; Image 6; Adhesive layer 10; Transfer sheet 20; Thermal transfer sheet 21; Dye layer 30; Card substrate

Claims (12)

[Claims] 1. A dye-receptive layer imaged with a sublimable dye is laminated on the surface of a card substrate, with the image-forming surface of the substrate sheet side facing the image-forming surface of the dye-receptive layer. A card having a transparent film laminated on the upper surface. 2. The card according to claim 1, wherein the transparent film is laminated via a primer layer. 3. The card according to claim 1, wherein the card base material is a white opaque rigid vinyl chloride resin sheet. 4. The card according to claim 1, wherein the sublimable dye is a dye having a molecular weight of 250 or more. 5. The card according to claim 1, wherein the dye receiving layer is made of a polyester resin. 6. The image of claim 1, wherein the image comprises a full-color portrait.
Card described in. 7. The card according to claim 1, wherein the transparent film comprises a polyester film. 8. A step of forming an image using a sublimable thermal transfer sheet on a dye receiving layer of a transfer sheet having a dye receiving layer formed on the surface of a transparent film, and the image formed transfer sheet being a card. And a step of attaching the card to the surface of the base material. 9. The method for producing a card according to claim 8, wherein the card base material is a white opaque rigid vinyl chloride resin sheet. 10. The method for producing a card according to claim 8, wherein the dye receiving layer is made of a polyester resin. 11. The method for producing a card according to claim 8, wherein the sublimable dye is a dye having a molecular weight of 250 or more. 12. The method for manufacturing a card according to claim 8, wherein the image is formed from a thermal transfer sheet of three primary colors.