JPS62220395A - Cards - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to cards such as bank cards and credit cards.

[Conventional technology]

For cards such as bank cards and credit cards,
Providing information for each owner, such as a photograph of the owner's face, by pasting it on the surface of the card is a suitable method for confirming the owner.

Various attempts have been made to include facial photographs etc. on cards, but
Both methods are insufficient in terms of immediacy, and it has been desired to provide a facial photograph as a part of the card if possible, and to retain the various elements of conventional cards.

[Problem that the invention seeks to solve]

Therefore, an object of the present invention is to provide a material that can instantly provide information for each owner, such as a facial photograph, on cards.

[Means for solving problems]

The present inventors have proposed a so-called sublimation transfer method in which a transfer sheet having a transfer layer containing a sublimable disperse dye, etc. is heated by point heating means controlled by an electric signal such as a thermal head, and the dye is sublimated. The present invention has been achieved by finding a way to solve the problems of the prior art described above by applying a material suitable for this method on the surface.

The present invention provides that ``a part of the card base material has an image-receiving layer that receives the dye transferred from the transfer sheet by heating, and a writability-imparting layer that can be written with a writing instrument or a printability-imparting layer that can be printed. The main idea is ``Characteristic cards.''

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the cards of the present invention, which has an image receiving layer 3, a writable A4, embossed characters 5, printing 6, and a magnetic stripe 7 on a part of the card base material 2. Although not shown, the card type 1 also has printing 6 on the back side.

Figures 2 to 4 show the cross-sectional structure of cards 1, and in particular,
A method of providing the image-receiving layer 3 on a card base material is shown. In FIG. 2, the image-receiving layer 6 is provided directly on the card base material 2, and in FIG. 3, it is provided via an adhesive 8. In addition, in FIG. 4, the image receiving layer 3 is provided through the intermediate layer 9, and although not shown between the card base material 2 and the intermediate layer 9 or between the intermediate layer 9 and the image receiving layer 3, there may be An adhesive may be used as required.

As for the material of the card base material 2, those used for current magnetic cards etc. can be used as is, for example, polyvinyl chloride resin sheets are suitable.In addition, polystyrene resin sheets, polyolefin resin sheets (polyethylene resin sheets) are suitable. , polypropylene resin sheet, etc.), a plastic sheet such as a polyethylene terephthalate resin sheet, a synthetic paper (polyolefin type, polystyrene type, etc.) or natural paper, a metal sheet, or a laminated sheet of two or more of these.

The thickness is usually about 0.5n to 1+n.

The material constituting the image-receiving layer 3 is used to receive the dye transferred from the thermal transfer sheet, such as a sublimable disperse dye, and to maintain the image formed by the reception. For example, the following synthetic resins (a) to (v) can be used alone or in combination of two or more.

(a) Those having ester bonds Polyester resins, polyacrylic acid ester resins, polycarbonate resins, polyvinyl acetate resins, styrene acrylate resins, vinyl toluene acrylate resins, etc.

(b) Those with phletane bonds Polyurethane resin, etc.

Those with H amide bond Polyamide resin (nylon).

) with urea bond Urea resin etc.

(e)) Others having highly polar bonds, such as polycaprolactone resin, polystyrene resin, polyvinyl chloride resin, polyacrylonitrile resin, etc.

Alternatively, the image receiving layer 3 is made of a mixed resin of saturated polyester and vinyl chloride-vinyl acetate copolymer. Examples of saturated polyester include Pylon 200, Pylon 290, Pylon 600 (manufactured by Toyobo Co., Ltd.), KA-
10380 (manufactured by Arayo Kagaku), TP220, TP235 (
As mentioned above, Nippon Synthetic Source) etc. are used. Vinyl chloride-vinyl acetate copolymer has a vinyl chloride component content of 85 to 97 w
It is preferable that the degree of polymerization is about 200 to 800 in terms of t%.

The vinyl chloride-vinyl acetate copolymer is not necessarily a copolymer of only vinyl chloride components and vinyl acetate components, but may also contain vinyl alcohol components, maleic acid components, etc. within a range that does not impede the purpose of the present invention. It's okay.

The image-receiving layer may also be composed of a polyethylene-based resin, for example, a polystyrene-based resin consisting of a single or copolymer of styrene thread, styrene, α-methylstyrene, vinyltoluene, or the above-mentioned polystyrene-based resin. Examples include styrenic copolymer resins that are copolymers of styrene monomers and other monomers, such as acrylic or methacrylic monomers such as acrylic esters, methacrylic esters, acrylonitrile, methacrylonitrile, or maleic anhydride. .

In any of the above embodiments, the purpose is to improve the whiteness of the image-receiving layer B to further enhance the clarity of the transferred image, to impart writability to the surface of the thermal transfer sheet, and to prevent the transferred image from being retransferred. A white pigment can be added to the image-receiving layer 3.

As the white pigment, titanium oxide, zinc oxide, kaolin clay, lucicum carbonate, finely powdered silica, etc. are used, and two or more of these can be used as a mixture.

Further, in order to further improve the light resistance of the transferred image, an ultraviolet absorber and/or a light stabilizer may be added to the image-receiving layer.

The amount of these ultraviolet absorbers and light stabilizers added is 0.05 to 1 part by weight, respectively, per 100 parts by weight of the resin constituting the image receiving layer 3.
0 parts by weight, preferably 0.5 to 3 parts by weight.

The thermal transfer sheet of the present invention may contain a release agent in the image-receiving layer in order to improve the releasability from the thermal transfer sheet. Mold release agents include solid waxes such as polyethylene wax, amide wax, and Teflon powder;
Examples include fluorine-based and phosphoric acid ester-based surfactants; silicone oil and the like, but silicone oil is preferred.

Although an oily silicone oil can be used as the silicone oil, a hardened type is preferable. Examples of the curable silicone oil include reaction curable, photocurable, and catalytic curable silicone oils, with reaction curable silicone oils being particularly preferred. As a reaction curing silicone oil,
Preferably, an amino-modified silicone oil and an epoxy-modified silicone oil are reacted and cured, and examples of the amino-modified silicone oil include Ni'F-393 and KF-85.
7, KF-858, X-22-5680, x-22-1
801a (manufactured by Shin-Etsu Chemical Co., Ltd.), etc., and examples of epoxy-modified silicone oil include KF-100T,
KF-101, KF'-60-164, KF-103C
The above-mentioned products include those manufactured by Shin-Etsu Chemical Co., Ltd.). In addition, Ks-
705F'.

Examples include KS-770 (catalytically curing silicone oil manufactured by Shin-Etsu Chemical Co., Ltd.), KS-720°KB-774 (photocurable silicone oil manufactured by Shin-Etsu Chemical Co., Ltd.), and the like. The amount of these curable silicone oils added is preferably 0.5 to 30 wt% of the resin constituting the image receiving layer. In addition, after dissolving or dispersing the above-mentioned mold release agent in a suitable solvent and coating it on a part of the surface of the image receiver [3], it is dried (2) A mold release agent layer can also be provided. As the mold release agent, a reaction cured product of the above-mentioned amino-modified silicone oil and epoxy-modified silicone oil is particularly preferred.The thickness of the mold release agent layer is preferably 0.01 to 5μ, particularly preferably 0.05 to 2μ.

Note that if silicone oil is added when forming the image-receiving layer, the silicone oil will bleed to the surface after application, so a release agent layer can be formed even if it is cured after bleeding. .

The image receiving layer [+3] is formed by using a composition for forming an image receiving layer obtained by dissolving or dispersing the material for forming the image receiving layer on the card base material 2, and by a known coating or printing method. It may also be carried out by a method in which it is once formed on a temporary carrier different from the card base material 2 and then transferred onto the card base material 2 again.

As the temporary carrier, a sheet with a releasable surface is used. For example, ■Cellulose fiber paper or synthetic paper with an undercoat layer and then a release silicone layer; ■Cellulose fiber paper with an extrusion coating of polyolefin resin or polyester resin on the surface. or (2) a release silicone layer applied to the surface of a plastic film such as a polyester film.

After forming an image-receiving layer on the temporary carrier (2) in the same manner as on the card substrate 2, if necessary, form an adhesive layer. This is to ensure the adhesive force between the card base material 2 and the image receiving layer 3 when transferring the layer.In this method,
Furthermore, another layer, for example an intermediate layer imparting cushioning properties, etc., may be formed on the temporary carrier, and the intermediate layer and the image-receiving layer may be transferred onto the card substrate 2 at the same time.

When the intermediate layer also serves as an adhesive, the adhesive layer need not be formed on the temporary carrier. In any case, since the adhesive layer only needs to be interposed between the card base material and the top layer on the temporary carrier, the adhesive layer is formed on the card base material 2, and It is also possible to form only an image receiving layer or an image receiving layer and an intermediate layer in sequence on a target carrier and then transfer the image.

When the image-receiving layer 3 is formed on a temporary carrier 1 and then transferred onto the card base 2 by a transfer method, the surface of the image-receiving layer formed on the card base 2 is temporarily Because the surface condition of the carrier is transferred, it has very good smoothness, and the image-receiving layer formed directly on the card base material 2 is inferior in smoothness compared to the image-receiving layer formed by the transfer method! Organic solvents such as polyester-based, polyacrylic ester-based, polyurethane-based, polyvinyl chloride-based, polyolefin-based, ethylene-vinegar copolymer, synthetic rubber-based, etc. may be used as long as they produce clearer and more precise images. A solution or emulsion can be used.The adhesive may be a thermal adhesive type or a room temperature adhesive type.In the case of a thermal adhesive type, wax, ethylene-vinyl acetate copolymer,
A hot melt type adhesive such as polyolefin or petroleum resin or sand german tyramination using an extrusion film such as a polyolefin film may be used.

Double-sided tape may be used as the adhesive that also serves as the intermediate layer.

Double-sided tape is made by impregnating rayon paper with a 7" sil-based adhesive and drying it. After drying, the double-sided tape has fine pores and is thought to play the same role as a foam layer.

The intermediate layer 9 is either a cushioning layer or a porous layer depending on the material of its construction, or may also serve as an adhesive in some cases.

Cushioning property 1 is specified in J-Engineering S-6301.
00 thymodulus is 10C1/cIII or less, and here the 100% modulus is 100? If it exceeds /m', the rigidity is too high, and even if the intermediate layer is formed using such a good resin, sufficient adhesion between the thermal transfer sheet and the thermal transfer layer during printing cannot be maintained.

Further, the lower limit of the 100% modulus is actually about 0.5/d.

Examples of resins that meet the above conditions include the following.

Polyurethane resin Polyester resin Polybutadiene resin Polyacrylic acid ester resin Evochishi resin Polyamide resin Rosin modified phenol mBF4 Terpene phenol resin Ethylene/vinyl acetate copolymer resin The above resins can be used alone or in combination of two or more. However, the above resins are relatively sticky, so if there is a problem during processing, inorganic additives,
For example, silica, alumina, clay, lucium carbonate, etc., or amide-based substances such as stearic acid amide may be added.

Cushilan properties 1 can be obtained by kneading the above-mentioned resin with other additives as well as solvents, diluents, etc. to form a paint or ink, and drying it as a coating film using a known coating method or printing method. The thickness thereof is about 0.5 to 50 μm, more preferably about 2 to 2 μm. If the thickness is less than 0.5 μm, it will not be able to absorb the roughness of the surface of the provided card base material, and therefore it will not be effective;
If it exceeds m, not only will the effect not be improved, but the image-receiving layer will become too thick and protrude, causing trouble when winding or stacking, and is not economical.

This is thought to be because the intermediate layer itself has low rigidity and is deformed by the pressure during printing, but furthermore, the resins mentioned above usually have a low glass transition point and softness point, and the thermal energy applied during printing is It is presumed that this also contributes to the fact that the rigidity is further reduced than at room temperature, making it easier to deform.

Porous @ 3 is made by applying 1) a liquid made by mechanically stirring a synthetic resin emulsion such as polyurethane, or a synthetic rubber latex such as methyl methacrylate-butadiene to form bubbles onto the base material 2 and drying 1, 2) the above synthetic resin emulsion,
A liquid mixture of the synthetic rubber latex and a foaming agent was applied onto the base material 2 and dried. 1, 3) A foaming agent was mixed with a synthetic resin such as PVC planutisol, polyurethane, or a synthetic rubber such as styrene-butadiene. A layer formed by applying a liquid onto the base material 2 and foaming it by heating; 4) A layer in which a thermoplastic resin or synthetic rubber is dissolved in an organic solvent, and is less likely to evaporate than the organic solvent and is compatible with the organic solvent. and a non-solvent (including those whose main component is water) that has no solubility in the thermoplastic resin or synthetic rubber.
A microporous layer or the like is used, which is formed by coating the film on top and drying it to form a microscopically aggregated film. In the fields 1) to 3) above, the bubble size is large, so tKNI
When a solution for forming the image receiver 113 is applied on top and dried,
There is a possibility that unevenness may occur on the surface of the image receiving 115 formed by drying. Therefore, in order to obtain an image receiving surface with small irregularities and on which a highly uniform image can be transferred (Secondly, as a porous layer, it is preferable to provide a microporous layer as described in Item 4 above).

The thermoplastic resin used for forming the above microporous layer includes saturated polyester, polyurethane,
Vinyl chloride vinyl acetate copolymer, cellulose acetopropionate, etc. may be mentioned, and the synthetic rubbers that can be used similarly include styrene-butadiene type, isoprene type, urethane type, etc. Various organic solvents and nonsolvents can be used to form the microporous layer, but hydrophilic solvents such as methyl ethyl ketone and alcohol are usually used as the organic solvent, and water is also used as the nonsolvent. used.

The thickness of the porous layer in the present invention is preferably 3 μm or more, particularly preferably 5 to 20 μm. porous 1
If the thickness of No. 13 is less than 3 μm, the effects of heat insulation and heat insulation cannot be exhibited.

@4 is a layer imparted with writability with a water-based pen, ballpoint pen, fountain pen, or pencil, or a layer imparted with printability with printing ink.

Usually, the writability imparting layer and the printability imparting layer may be considered to be the same.

For example, 114 is made by mixing an extender pigment such as titanium oxide, zinc oxide, clay, silica fine powder, calcium carbonate, etc. with a vehicle such as acrylic ester, saturated polyester, or vinyl chloride-vinyl acetate copolymer. Ink can be used. Examples of the means for forming @4 include gravure printing method, reverse roll coach-in method using a gravure plate, screen printing method, etc. @4 is formed in the area where writing, printing, etc. is required by the above-mentioned forming means. However, the thickness of @4 is preferably 2 to 10 μm.

1114 may be provided on the card base material 2 separately from the image receiver @3, but may also be provided on a part of the image receiver @3, covering the image receiver 1.

In addition to forming the writability imparting layer or the printability imparting layer 1 as a separate layer 1 as described above, the layer 1ii1 described above may be formed by utilizing a portion of the card base material 2 where the image receiving layer 113 is not provided.
4 may be substituted. In particular, when the surface of the card base material 2 is equivalent to synthetic paper, it inherently has writability and printability.

Although the cards of the present invention basically have the above-described structure, they may also be used in combination with current recording methods for cards made for other purposes, and such recording methods and recording media may be used in combination. There are the following:

Magnetic recording using magnetic layer Optical record I! ! Optical recording using (low melting point metal thin film, etc.) hologram Embossing (letters, numbers, etc.) engraving (faces, etc.) signature Information recording using engineering memory printing barcode These can be combined with other recording means as appropriate.

Also, in the above description, the image receiving layer on the card substrate is exposed and protrudes from the card substrate. However, in actual use, it is desirable that the image-receiving layer is further covered with a protective layer 1 after image formation, and it is preferable that the image-receiving layer not protrude when the entire card is viewed.

In one preferred embodiment, the image receiving layer 1 is formed on a part of a card base material having a predetermined thickness, and then the image receiving layer surface is made to be at the same level as the surface of the card base material by pressing the image receiving/forming surface. One example of this is to prevent the image receiving I from protruding. In this embodiment, after forming the image, a transparent synthetic resin film is pasted on the entire surface of the card base including the image-receiving layer or on the image-receiving layer (which may be slightly thicker than image-receiving layer 1) for the purpose of protection. It is best to attach a transparent synthetic resin paint to the surface.

In another preferred embodiment, for example, 0.56 ff1l
A thick core sheet is provided with C2 image receiving-1 writability imparting @ (or printability imparting @), an image is formed on the image receiving layer, writing or printing is performed on the writability imparting layer, and then the front and back sides are For example, a transparent oversheet having a thickness of 0.1 fin may be overlaid on the entire surface of both sides, and laminated by a heat fusion method or a drawing method using an adhesive. The oversheet on the front side, the core sheet, and the oversheet on the back side do not separate, and there is no need to align them when pasting them together. This embodiment has the advantage that printing on the core sheet, adhesion of the magnetic layer on the oversheet, etc. can be carried out using almost the same conventional magnetic card manufacturing processes.

The cards of the present invention are dyes that melt, sublimate, or migrate by heat, such as sublimable disperse dyes, in a synthetic resin (double-dissolved or dispersed).
Polyester At with different colors of magenta and yellow
To heat with a thermal head in combination with a thermal transfer sheet □ which is provided on a film, etc. and has a slip II (slip @) on the opposite side to ensure the running property of the thermal head.C
Second, an image can be formed on the image-receiving layer.

For example, when forming a photograph of the owner's face on the image-receiving layer, the image information obtained by photographing with a video camera is temporarily stored in a memory, and then the stored symbols R, G, B
After converting the signals into OlM and Y signals and making corrections as necessary, they are output to a thermal head, and heated and printed using color separation symbols that correspond to each color area on the transfer layer of the thermal transfer sheet. By overlapping them, a color photo-like image can be formed.

Please note that the card base material is heated to 40'c-is before thermal printing.
By heating to preferably 50 to 100°C, high-density and stable thermal printing is possible.

[Action/effect of the invention]

Since the cards of the present invention have the above configuration, they are suitable for recording information that can change for each individual card, such as a facial photograph, by a thermal transfer method using a thermal transfer sheet.

In particular, when the image-receiving layer is provided by a transfer method, the image clarity and
It is excellent in precision.

Example 1 A composition for forming a display layer having the following composition was partially etched onto a base material having a total thickness of 600μ, which was made by laminating two sheets of synthetic paper (manufactured by Tamago Yuka S, Yubo) with a thickness of 300μ. Coated by reverse roll coating using a gravure roll, dried, and after drying, a display layer of about 1Qμ was applied.100 parts by weight of heat-transferable polystyrene resin (Picolastic D1 manufactured by Rika Vercules), amino-modified silicone (Shin-Etsu Chemical Co., Ltd.) manufactured by KF-393)7
Part by weight Epoxy modified silicone (manufactured by Shin-Etsu Chemical, X-22-34
5) 7 parts by weight methyl ethyl ketone/toluene (weight ratio 1:1) 700
Part by weight: A polyethylene terephthalate film with a thickness of 6μ, which has been heat-resistant treated on one side, is used as a support material, and on the opposite side of the support material to the heat-resistant treated side, an ink composition for forming a coloring material layer having the following composition. The material was coated by wire per coating and dried to form a coloring material layer with a thickness of 1 μm (solid content coverage: 1y−/g) to prepare a thermal transfer sheet.

Ink composition for forming coloring material 1 Disperse dye (Nippon Kayakaku, Ks T-B-156) 0
．． 4 parts by weight Ethyl hydroxyethyl cellulose (manufactured by Hachi-Cures) 0.6 parts by weight Methyl ethyl ketone/toluene (weight ratio 1:1) 9 g parts After heating and recording with a thermal head, both sheets were peeled off, and the disperse dye in the coloring material of the thermal transfer sheet was transferred in a pattern onto the partially formed display layer of the thermal transfer sheet.

After completion of the above transfer, printing was performed on the portions of the heat transfer sheet (: where no display layer was provided) using offset ink, and writing was performed using a ballpoint pen or a water-based ink pen to create a card.

Example 2 An ink composition for forming a display layer having the composition shown below was applied to the entire surface of a one-layer thick white sheet of polyvinyl chloride that had been subjected to primer coating to improve adhesion to the display layer using a wire bar, and was dried. So, the amount of application after drying is 8? / Go image reception 1 was set up.

Ink composition for display layer formation Polyester resin (manufactured by Toyobo, Byron 200) 70 parts by weight Polyester resin (manufactured by Toyobo, Pylon 290) 30 parts by weight Amino-modified silicone (manufactured by Shin-Etsu Chemical, KF-39!l)
5 parts by weight epoxy modified silicone (manufactured by Shin-Etsu Chemical, X-22-34
3) 5 parts by weight methyl ethyl ketone/toluene (weight ratio 1:1) 700
On the part-by-weight display layer, an ink composition having partially etched writeability and printability is applied and dried using a gravure roll or purse roll coating, and after drying. A writability/printability imparting portion having a thickness of approximately 4 μm was provided in coating 1, and a thermal transfer sheet was prepared.

Ink composition for imparting writability and printability Polyester resin (manufactured by Toyobo, Byron 200) 100
Part by weight Calcium carbonate (Shiraishi calcium etc., Brilliant 15
) 30 parts by weight toluene/methyl ether ketone (weight ratio 1:1) 500
Part by Weight Using a thermal transfer sheet similar to that used in Example 1, thermal transfer was performed in the same manner as in Example 1 to obtain writability/printability imparting portion C.
: was printed using flexo printing, and the non-printed area was written with a felt-tip pen to form a card.

Example 3 A composition for forming a display layer having the following composition was coated with a wire spar on a release paper prepared by applying an electron beam curing type silicone resin to the polyethylene film surface of polyethylene laminated paper and curing it with an electron beam. After drying, a coating weight of 10 y/g after drying was applied to a temporary carrier.

Display 1 Forming composition polyester resin (manufactured by Toyobo, Byron 200) 70
Parts by weight Polyester resin (manufactured by Toyobo, Byron 27o) 30 Parts by weight Amino-modified silicone (manufactured by Shin-Etsu Chemical, KF-393) 7
Part by weight Epoxy modified silicone (manufactured by Shin-Etsu Chemical, X-22-34
3) 7 parts by weight On the other hand, methyl ethyl ketone/toluene (made by Jul, Vylon 500) of polyester (Vylon 500, made by Jul) was applied as a heat-sensitive adhesive to a white sheet of polyvinyl chloride resin, which was coated with a primer to improve its adhesion to the display layer. Weight ratio 1:
1) Apply the solution with a wire parser, dry it, and apply a coating amount of 7? after drying. /G display layer was provided.

The adhesive side of the polyvinyl chloride resin sheet and Indication 1 on the temporary carrier are brought into contact and overlapped, and heated under pressure with a hot plate from the side of the temporary carrier to remove Indication 1 from the temporary carrier. It was transferred to a vinyl chloride base material.

Thereafter, a card was prepared in the same manner as in Example 1.

Example 4 A methacrylic sheet having a thickness of 1111 and coated with a primer to improve adhesion to the indicated material was provided with the following foaming composition for asthma formation.

Polystyrene resin (manufactured by Rika Percules, Picolastic D) 100 parts by weight Amino-modified silicone 5 parts by weight Epoxy-modified silicone
5 parts by weight toluene/methyl ethyl ketone
700 parts by weight The adhesive sound on the marking 1 provided on the same temporary carrier as in Example 3 was brought into contact with the foam layer provided on the methacrylic sheet and heated under pressure to transfer the marking 1 onto the methacrylic sheet. I forced it.

Thereafter, a card was prepared in the same manner as in Example 1.

Example 5 A composition for forming an intermediate I having the following composition was applied by wire per coating to a 111 ml thick white sheet of polyvinyl chloride which had undergone primer coating to improve adhesion to the intermediate layer, and was dried. , (application amount after drying: 10P)
/m') Composition for forming intermediate layer Polyester resin (manufactured by Toyobo, Byron 200) 100
Part by weight Toluene/Methyl ethyl ketone 700 parts by weight A display layer forming composition having the following composition was applied thereon by reverse roll coating using a gravure plate for peta printing, and dried to give a coated amount of 10 y/w after drying. rd display layer was provided to obtain a thermal transfer sheet.

Composition for forming display I 100 parts by weight of polystyrene resin (Rika Percules, Picolastic D) Epoxy-modified silicone (manufactured by Shin-Etsu Chemical, !-22-34)
3) 7 parts by weight amino-modified silicone (manufactured by Shin-Etsu Chemical, KF-393) 7
Weight part methyl ethyl ketone/toluene C ill: 1) 7
00 parts by weight A 6μ thick polyethylene terephthalate film that has been heat-resistant treated on one side is used as a support material, and on the opposite side of the heat-resistant treated side of the support material, a colorant-forming ink composition having the following composition is applied to a wire. It was applied by bar coating and dried to form a coloring material with a thickness of 1 μm (coating amount after drying IP/rn”), which was used as a thermal transfer sheet.

Ink composition for forming color material layer Disperse dye (Nippon Kayaku Co., Ltd., KS T-B-136) 0.
4 parts by weight Ethyl hydroxyethyl cellulose (manufactured by Hachi-Cures) 0.6 parts by weight Methyl ethyl ketone/toluene (weight ratio 1:1) 9 parts by weight The above thermal transfer sheet and thermal transfer sheet were arranged so that the color material layer and display layer were in contact with each other. The double image sheet was heated by a thermal head and then peeled off to form a transferred image on the thermal transfer sheet.

The density of the image was high, there was no graininess in the halftone image, and a beautiful card with a photo was created.

Example 6 In Example 5, a thermal transfer sheet was formed by separately applying transfer layers containing dyes for each color of cyan, magenta, and yellow, and printing was performed for each color using color separation signals. had an image equivalent to a color photograph with natural tones.

[Brief explanation of drawings]

FIG. 1 is a perspective view of cards of the present invention, and FIGS. 2 to 4 are sectional views of the cards. １・・・・・・・・・・・・・・・Cards 2・
・・・・・・・・・・・・・・・・・・Card base material 3・・
・・・・・・・・・・・・・・・Image reception 14・・・・・・
・・・・・・・・・・・・Writability layer 5・・・・・・・
・・・・・・・・・・・・Emboss 6・・・・・・・・・
・・・・・・・・・Print 7・・・・・・・・・・・・・・・
・・・・・・－Ki Drive 8・・・・・・・・・・・・
・・・・・・Adhesive 9・・・・・・・・・・・・・・・
...Intermediate layer line = 5 Figure 2 Figure 3 Figure 4r: iA

Claims (8)

[Claims] (1) A part of the card base material is characterized by having an image-receiving layer that receives the dye transferred from the thermal transfer sheet by heating and a writability-imparting layer that can be written on with a writing instrument or a printability-imparting layer that can be printed. cards. (2) Cards according to claim 1, wherein the image-receiving layer is provided on the card base material directly or via an adhesive. (3) Cards according to claim 1, wherein the image-receiving layer is provided on the card base material via an intermediate layer. (4) The cards according to claim 3, wherein the intermediate layer is a cushioning layer. (5) Cards according to claim 5, wherein the intermediate layer is a porous layer. (6) Cards according to claim 3, wherein the intermediate layer also serves as an adhesive. (7) Cards according to any one of claims 1 to 6, wherein the image-receiving layer is directly provided by a printing method or a coating method. (8) Claim 1, characterized in that the image-receiving layer is formed on a temporary carrier separate from the card base material by a printing method or a coating method, and then transferred onto the card base material. - Any of the cards listed in Section 6.