JP3193065B2 - Image recording card - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording card,
More specifically, the present invention relates to an image recording card capable of preventing forgery or falsification of an image.

[0002]

2. Description of the Related Art Conventionally, many image recording cards such as ID cards such as identification cards, driver's licenses, and membership cards have been used. The ID card usually has a person image for confirming the card holder and various items to be described. Since a portrait image is usually formed as a grayscale image, it can be a gradation image. The various described items are, for example, in the case of identification, for example, the address, name, date of birth, department, effective date, etc. of the person, and in the driver's license, for example, the date of birth of the person,
Name, license number, license type, etc. Since these items are usually described in characters, numbers, symbols, or the like, they can be character information.

[0003] In recent years, an ID card formed by forming a gradation image by a sublimation thermal transfer method has emerged because a beautiful image can be easily formed. In general, the sublimation type thermal transfer method is to overlap an image receiving layer of an image receiving sheet having an image receiving layer formed on a support with an ink layer of an ink sheet having an ink layer containing a sublimable dye on the support. In addition, this method refers to a method in which a sublimable dye is diffused and moved to the image receiving layer by imagewise heating to form a gradation image such as a human face image in the image receiving layer.

What is important in ID cards is that forgery / falsification of ID cards must be absolutely prevented. The reason why the ID card should not be counterfeited is apparently unnecessary to explain. Thus, as described above, the support and
An ID card including an image receiving layer on which a gradation image is formed by a sublimation type thermal transfer method is easily forged or falsified by cutting out the region on which the gradation image is formed and inserting a separately prepared gradation image region after the cutting. Would.

Therefore, in the ID card, forgery or alteration of the ID card must be prevented so that the image receiving layer having the gradation image is not cut off by any method. Conventionally, in order to protect the gradation image on the ID card and prevent forgery and falsification thereof, a method of laminating a transparent sheet on the surface of the ID card (Japanese Unexamined Patent Publication No.
180391) has been proposed.

However, even when a transparent sheet is laminated on an ID card having a gradation image formed on an image receiving layer by a sublimation type thermal transfer system, the image receiving layer itself is, for example, a thermoplastic resin sheet, and the transparent sheet is also made of a thermoplastic resin. Because it is a resin sheet, the image receiving layer and the transparent sheet can be easily peeled off, the tone image area is cut off after the transparent sheet is peeled off, and the forged tone image area is cut off as described above, and then fitted, Then, the ID card is easily forged by laminating again with a transparent sheet. Therefore, when laminating a transparent sheet,
Counterfeit alteration cannot be completely prevented.

[0007] Due to the nature of the ID card, the face photograph must not be altered. Also, the automobile license is issued only from a certain public organization, and must not be freely created or forged by anyone other than the public organization. Under such circumstances, forgery and alteration of the automobile license are absolutely required to be prevented. With respect to various types of image recording cards such as ID cards, development of a technology that can completely prevent forgery and falsification is now an important issue.

The present invention has been made to improve the above circumstances. That is, an object of the present invention is to provide an image recording card for preventing forgery or alteration of a gradation image such as a face image, which is an important issue in the nature of an ID card.

[0009]

SUMMARY OF THE INVENTION The present invention as set forth in claim 1 for achieving the above object, support and image-receiving layer having a gradation image formed by thermal transfer or by thermal development of the sublimable dye And light at the boundary of the formation area of the gradation image.
An image recording card having a mark formed as a thermal transfer film made of a transparent resin. The invention according to claim 2 is characterized in that the image recording card is formed by thermal transfer of a support and a sublimable dye.
Is an image receiving layer having a gradation image formed by thermal development,
A hologram formed at the boundary of the formation area of the gradation image
An image recording car characterized by having an indicia consisting of
Is .

[0010] The present invention provides an image frame of a gradation image formed by thermal transfer or thermal development of a sublimable dye, by attaching a mark (mark) to the image frame, which is an important problem in the properties of an ID card. Modification can be prevented beforehand.

Hereinafter, the present invention will be described in detail. 1 and 2 conceptually show an example of a preferred embodiment of the image recording card of the present invention. 1 and 2 are provided to explain the present invention more clearly. The image recording card according to the present invention is not limited to the embodiments shown in FIGS.

As shown in FIG. 1, the image recording card 1
A support 4 has an image receiving layer 5 on one side, and on the image receiving layer 5, a gradation image 2 is formed by a sublimation thermal transfer method or a heat development transfer method, and an image frame 6 of the gradation image 2 is formed.
Has a mark 3. Further, as shown in FIG. 2, the image recording card 7 has a resin film 8 having an index (mark) 3 covering the entire gradation image 2. Hereinafter, an image recording card having a gradation image by a sublimation type thermal transfer method and an image recording card having a gradation image by a heat development transfer method will be separately described.

I. An image recording card having a gradation image by a sublimation type thermal transfer method A gradation image on an image recording card can be formed by a thermal transfer method using a thermal transfer recording ink sheet on an image receiving sheet for image recording.

(1) Image Receiving Sheet for Image Recording-Support-Examples of the support include various papers such as paper, coated paper, and synthetic paper (polypropylene, polystyrene, or a composite material obtained by bonding them to paper). Various plastic films or sheets such as white vinyl chloride resin sheet, white polyethylene terephthalate base film, transparent polyethylene terephthalate base film, polyethylene naphthalate base film, etc., films or sheets formed of various metals, various ceramics And the like.

In the support, a white pigment such as titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, calcium carbonate, etc. is used to enhance the sharpness of an image formed in a later step. It is preferably added. The thickness of the support is usually 20 to 100.
0 μm, preferably 50 to 800 μm.

-Image receiving layer- When an image receiving layer is formed on the surface of a support, the image receiving layer can be formed of a binder and various additives. In some cases, it can be formed only from a binder. 1. Binder for Image Receiving Layer The binder for the image receiving layer is usually formed of a vinyl chloride resin. Examples of the vinyl chloride resin include a polyvinyl chloride resin and a vinyl chloride copolymer. Examples of the vinyl chloride copolymer include a copolymer of vinyl chloride and another comonomer containing vinyl chloride at a ratio of 50 mol% or more as a monomer unit.

Examples of the other comonomers include vinyl esters of fatty acids such as vinyl acetate, vinyl propylene acid, vinyl cocoate, and vinyl tallowate; acrylic acid;
Acrylic acid or methacrylic acid such as methacrylic acid, methyl acrylate, ethyl methacrylate, butyl acrylate, 2-hydroxyethyl methacrylate, and 2-ethylhexyl acrylate, and alkyl esters thereof, maleic acid, and maleic acid Examples thereof include maleic acid such as diethyl, dibutyl maleate and dioctyl maleate, and alkylalkyl esters thereof, and alkyl vinyl ethers such as methyl vinyl ether, 2-ethylhexyl vinyl ether, lauryl vinyl ether, palmityl vinyl ether, and stearyl vinyl ether. Further, as the comonomer, other halogenated olefins such as ethylene, propylene, acrylonitrile, methacrylonitrile, styrene, chlorostyrene, itaconic acid and its alkyl esters, crotonic acid and its alkyl esters, dichloroethylene and trifluoroethylene, and cyclopentene And the like, such as cycloolefins, aconitic esters, vinyl benzoate, and benzoyl vinyl ether. Vinyl chloride copolymer is a block copolymer,
Any of a graft copolymer, an alternating copolymer, and a random copolymer may be used.

Next, the heat-resistant resin has good heat resistance, is not a resin having an extremely low softening point or glass transition point (Tg), and is appropriately compatible with the vinyl chloride resin and is substantially colorless. If so, the range does not matter. The term “heat resistance” as used herein means that the resin itself does not undergo coloring such as yellowing when stored under heat, and the physical strength does not extremely deteriorate. The heat-resistant resin has a softening point of 50 to 200.
C, especially preferably Tg of 80 to 150C. If the softening point is lower than 50 ° C., the transfer of the dye may undesirably cause fusion with the ink sheet.
If the softening point exceeds 200 ° C., the sensitivity of the image receiving layer decreases, which is not preferable.

Examples of the heat-resistant resin satisfying the above conditions include a phenol resin, a melamine resin, a urea resin, and a ketone resin. Among them, a urea aldehyde resin and a ketone resin are particularly preferable. Urea aldehyde resin is obtained by condensation of urea and aldehydes (mainly formaldehyde), and ketone resin is obtained by condensation reaction of ketone and formaldehyde. Various resins are known depending on the starting ketone, and any of them can be used in the present invention. As the raw material ketone,
Examples include methyl ethyl ketone, methyl isobutyl ketone, acetophenone, cyclohexanone, methylcyclohexanone, and the like.

Examples of easily available urea aldehyde resins include Laropearl A81 and Laropearl A101 (manufactured by BASF), and examples of the ketone resin include Laropearl K80 (manufactured by BASF). The molecular weight of the heat resistant resin is not particularly limited. Further, a binder other than the above-mentioned essential binder may be added to such an extent that the object of the present invention is not impaired.

3. Metal ion-containing compound When forming the image receiving layer, the resin preferably contains, for example, a metal ion-containing compound as necessary. Examples of the metal ion constituting the metal ion-containing compound include divalent and polyvalent metals belonging to Groups I to VIII of the periodic table.
1, Co, Cr, Cu, Fe, Mg, Mn, Mo, N
i, Sn, Ti, Zn and the like are preferable, and in particular, Ni, Cu,
Co, Cr, Zn and the like are preferable. As the compound containing these metal ions, an inorganic or organic salt of the metal and a complex of the metal are preferable. To give a specific example, N
A complex represented by the following general formula containing i ²⁺ , Cu ²⁺ , Co ²⁺ , Cr ²⁺ and Zn ²⁺ is preferably used.

[M (Q ₁ ) _k (Q ₂ ) _m (Q ₃ ) _n ] ^{p +}
P (L ^-), however, M in the formula represents a metal _{ion, Q 1, Q 2, Q} 3
Each represents a coordination compound capable of coordinating with the metal ion represented by M, and these coordination compounds are selected from, for example, coordination compounds described in "Chelate Chemistry (5) (Nankodo)" be able to. Particularly preferred are coordination compounds having at least one amino group coordinated with a metal, and more specifically, ethylenediamine and its derivatives, glycinamide and its derivatives, picolinamide and its derivatives Can be

L is a counter anion capable of forming a complex,
Inorganic compound anions such as Cr, SO ₄ and ClO ₄ and organic compound anions such as benzene sulfonic acid derivatives and alkyl sulfonic acid derivatives are mentioned. Particularly preferred are tetraphenyl boron anions and derivatives thereof, and alkyl benzene sulfonic acid anions and It is a derivative. k represents an integer of 1, 2 or 3, m represents 1,
2 or 0, and n represents 1 or 0, which is determined depending on whether the complex represented by the general formula is tetradentate or hexadentate, or Q ₁ , Q ₂ , It is determined by the number of Q ₃ ligand. p represents 1, 2 or 3.

Examples of this type of metal ion-containing compound include:
Examples include those exemplified in U.S. Pat. No. 4,987,049. When the metal ion-containing compound is added, the amount of addition is 0.5 to
Preferably ^{20g / m 2, 1~15g / m} 2 is more preferable.

3. Additives A release agent, an antioxidant, a UV absorber, a light stabilizer, a filler (inorganic fine particles, organic resin particles), and a pigment may be added to the image receiving layer. Further, a plasticizer, a heat solvent and the like may be added as a sensitizer. The release agent can improve the releasability between the sublimation type thermal transfer ink sheet described below and the image receiving layer. Examples of such release agents include silicone oils (including those called silicone resins); solid waxes such as polyethylene wax, amide wax, and Teflon powder; and fluorine-based and phosphate-based surfactants. Among them, silicone oil is preferable.

The silicone oils are classified into two types: a simple addition type (simple addition type) and a type of curing or reacting (curing reaction type). In the case of the simple addition type, it is preferable to use a modified silicone oil in order to improve the compatibility with the binder. Examples of the modified silicone oil (resin) include polyester-modified silicone oil (resin), acrylic-modified silicone oil (resin), urethane-modified silicone (resin), cellulose-modified silicone oil (resin), alkyd-modified silicone oil (resin), and epoxy-modified Examples include silicone oil (resin).

That is, a polyester-modified silicone resin containing a polysiloxane resin in the main chain and copolymerizing polyester in a block shape, and a silicon-modified polyester resin having a dimethylpolysiloxane portion as a side chain bonded to the polyester main chain. Block copolymers, alternating copolymers, graft copolymers, random copolymers, and the like of dimethylpolysiloxane and polyester can also be used as the modified silicone oil or resin.

Typical polyester-modified silicone resins include, for example, a block copolymer of a copolymer of a diol and a dibasic acid or a polyester, which is a ring-opening polymer of caprolactone, with dimethylpolysiloxane (both dimethylpolysiloxane). (Including copolymers in which the terminal or one end is blocked with the polyester moiety, or conversely, the polyester is blocked with dimethylpolysiloxane.) Copolymers obtained by binding siloxane can be mentioned. The amount of addition of these simple addition type silicone oils cannot be determined uniformly because they may vary in various ways depending on the types thereof, but generally speaking, generally, the amount of the addition is usually relative to the binder in the image receiving layer. It is 0.5 to 50% by weight, preferably 1 to 20% by weight.

As the curing reaction type silicone oil,
Reaction curing type, light curing type, catalyst curing type and the like can be mentioned. As the reaction-curable silicone oil, there is one obtained by reacting and curing an amino-modified silicone oil and an epoxy-modified silicone oil. Further, KS-705F-PS, K
S-705F-PS-1, KS-770-PL-3 [Catalyst-curable silicone oil: manufactured by Shin-Etsu Chemical Co., Ltd.], KS-720, KS-774-PL-3
[All are photocurable silicone oils: manufactured by Shin-Etsu Chemical Co., Ltd.].

The addition amount of these curable silicone oils is preferably 0.5 to 30% by weight of the binder for the image receiving layer.
The release agent layer may be provided on a part of the surface of the image receiving layer by dissolving or dispersing the above-mentioned release agent in a suitable solvent and applying the resultant, followed by drying. Next, examples of the antioxidant include JP-A-59-182785 and JP-A-60-1.
30735, antioxidants described in JP-A-1-127387 and the like, and compounds known to improve image durability in photographs and other image recording materials.

The UV absorber and the light stabilizer include:
JP-A-59-158287, JP-A-63-74686,
Nos. 63-145089, 59-196292, 62-229594, 63-122596, and 61
Compounds described in JP-A-283595, JP-A-1-204788 and the like, and compounds known to improve image durability in photographs and other image recording materials can be mentioned. Examples of the filler include inorganic fine particles and organic resin particles. Silica gel, calcium carbonate, titanium oxide,
Acid clay, activated clay, alumina and the like,
Examples of the organic fine particles include resin particles such as fluororesin particles, guanamine resin particles, acrylic resin particles, and silicon resin particles. These inorganic / organic resin particles vary depending on the specific gravity, but are preferably added at 0.1 to 70% by weight.

Typical examples of the pigment include titanium white, calcium carbonate, zinc oxide, barium sulfate, silica, talc, clay, kaolin, activated clay, and acid clay. Examples of the plasticizer include phthalic acid esters (for example, dimethyl phthalate, dibutyl phthalate, dioctyl phthalate, didecyl phthalate, etc.),
Pyromellitic acid esters such as trimellitic acid esters (eg, octyl trimellitate ester, isononyl trimellitate ester, isodesol trimellitate ester), octyl pyromellitic acid ester,
Adipates (dioctyl adipate, methyl lauryl adipate, di-2-ethylhexyl adipate, ethyl lauryl adipate), other oleates, succinates, maleates, sebacates, Citrates, epoxidized soybean oil, epoxidized linseed oil, epoxystearate epoxys, and orthophosphates such as triphenyl phosphate and tricresyl phosphate; triphenyl phosphite; tris tridecyl phos Fight,
Examples include phosphites such as dibutyl hydrogendiene phosphite, and glycol esters such as ethylphthalylethyl glycolate and butylphthalylbutyl glycolate.

-Writing layer- An image recording card having a gradation image is printed on an I.D.
When a D card is used, it is particularly preferable to provide a writing layer. This is because the formation of the writing layer allows various information to be written on the ID card, which is convenient. Description of the writing layer in the present invention is described in JP-A-Hei.
The description of the “writing layer” described in the fourth row of the upper right column on page 4 of the publication No. 205155 to the second row of the lower right column of the fourth page will be omitted, and the detailed description thereof will be omitted. In addition, a backing layer can be provided on the lower surface for the purpose of preventing static electricity and curling.

(2) Production of Image Receiving Sheet for Image Recording The image receiving sheet for image recording is prepared by dispersing or dissolving the components for forming the image receiving layer in a solvent to prepare a coating solution for the image receiving layer.
The coating liquid for the image receiving layer can be produced by a coating method in which the coating liquid is applied to the surface of a support and dried. Further, it can also be produced by a lamination method or the like in which a mixture having a component for forming the image receiving layer is melt-extruded and laminated on the surface of a support. As the solvent used in the coating method,
Conventionally known solvents such as water, alcohol, methyl ethyl ketone, toluene, dioxane and cyclohexanone can be mentioned.

When the above-mentioned laminating method is adopted, a co-extrusion method can also be adopted. The image receiving layer may be formed over the entire surface of the support, or may be formed on a part of the surface of the support. The thickness of the image receiving layer formed on the surface of the support is generally 2 to 50 μm, preferably about 3 to 20 μm.

(3) Thermal Transfer Recording Ink Sheet The image recording card of the present invention uses a sublimation type thermal transfer recording ink sheet as the image recording image receiving sheet, and forms a gradation image in a predetermined area by thermal transfer. I do. The thermal transfer recording ink sheet is basically formed by laminating an ink layer on a support.

-Support-Any support can be used as long as it has good dimensional stability and can withstand heat during recording with a thermal head. Thin paper such as condenser paper and glassine paper, polyethylene terephthalate, Polyethylene naphthalate, polyamide, polyimide, polycarbonate, polysulfone,
A heat-resistant plastic film such as polyvinyl alcohol cellophane or polystyrene can be used. The thickness of the support is preferably 2 to 10 μm. The shape of the support is not particularly limited, and may be any shape such as a wide sheet or film, a narrow tape or card.

-Ink Layer- The ink layer contains a heat diffusing dye and a binder as essential components. 1. Thermal diffusible dyes Thermal diffusible dyes include cyan, magenta and yellow dyes.

The cyan dye is described in JP-A-59-7.
Nos. 8896, 59-227948, 60-249
No. 66, No. 60-53563, No. 60-130735
No. 60-131292, No. 60-239289
Nos. 61-19396, 61-22993, 61-31292, 61-31467, and 61-
No. 35994, No. 61-49893, No. 61-148
Nos. 269, 62-191191 and 63-9128
No. 8, 63-91287 and 63-290793, naphthoquinone dyes, anthraquinone dyes, and azomethine dyes.

The magenta dye is described in JP-A-59-1984.
No. 78896, JP-A-60-30392, JP-A-60-60
-30394, JP-A-60-253595, JP-A-61-262190, JP-A-63-5992, JP-A-63-205288, JP-A-64-159, JP-A-64-63194 Anthraquinone dyes, azo dyes, azomethine dyes, etc. described in each publication such as No.

As the yellow dye, JP-A-59-78 can be used.
896, JP-A-60-27594, JP-A-60-3
No. 1560, JP-A-60-53565, JP-A-61-61
Methine dyes, azo dyes, quinophthalone dyes and anthrisothiazole dyes described in JP-A Nos. 12394 and 63-122594.

Particularly preferred as the heat-diffusing dye is a compound having an open-chain or closed-type active methylene group, which is an oxidized p-phenylenediamine derivative or p-phenylenediamine derivative.
An azomethine dye obtained by a coupling reaction with an oxidized form of an aminophenol derivative and an indaniline obtained by a coupling reaction with an oxidized form of a phenol or naphthol derivative or a p-phenylenediamine derivative or an oxidized form of a p-aminophenol derivative It is a pigment.

The heat diffusible dye contained in the ink layer may be any of a yellow dye, a magenta dye and a cyan dye as long as the image to be formed is a single color. Also, depending on the color tone of the image to be formed,
Any two or more of the three dyes or other heat-diffusible dyes may be included.

When a metal ion-containing compound is contained in the image receiving layer of the image-receiving sheet for thermal transfer recording, a dye compound capable of forming a chelate with the metal ion-containing compound is preferable as the sublimable dye. As the dye compound that forms a chelate with the metal ion-containing compound, various known compounds can be appropriately selected and used. Specifically, for example, Japanese Patent Application Laid-Open No. 59-7889
No. 3, No. 59-109349, Japanese Patent Application No. 2-2133
No. 03, No. 2-214719 and No. 2-203742, cyan image forming dyes (hereinafter referred to as cyan dyes), magenta image forming dyes (hereinafter referred to as magenta dyes), yellow image forming dyes (hereinafter yellow) Etc.). Among the above dyes,
It is preferable to use a dye compound that can form a bidentate chelate with at least the metal ion-containing compound described above. Examples of such a dye include a dye represented by the following general formula.

[0045]

Embedded image

Wherein X ¹ represents a group of atoms necessary for completing an aromatic carbocyclic or heterocyclic ring in which at least one ring is composed of 5 to 7 atoms;
At least one of the carbon atoms adjacent to the azo bond is a nitrogen atom or a carbon atom substituted with a chelating group. X ² represents an aromatic heterocyclic ring or an aromatic carbocyclic ring in which at least one ring is composed of 5 to 7 atoms. G represents a chelating group.

Whichever dye compound is employed,
Depending on the color tone of the image to be formed, two or more of the three dyes or other sublimable dyes may be included. The amount of the sublimable dye used is usually 0.1 to ²⁰ g, preferably 0.2 to 5 g per 1 m ^{2 of} the support.
It is.

2. As a binder of the binder-ink layer, a cellulose-added compound,
Cellulose resins such as cellulose esters and cellulose ethers; polyvinyl acetal resins such as polyvinyl alcohol, polyvinyl formal, polyvinyl acetoacetal, and polyvinyl butyral; polyvinyl pyrrolidone, polyvinyl acetate, polyacrylamide, styrene resins, poly (meth) acrylic acid Examples include vinyl-based resins such as system-based esters, poly (meth) acrylic acid, and (meth) acrylic acid copolymers, rubber-based resins, ionomer resins, olefin-based resins, and polyester resins.

Among these resins, polyvinyl butyral, polyvinyl acetoacetal or cellulose resin having excellent storage stability is preferable. One of the above various binders can be used alone, or two or more of them can be used in combination. The weight ratio between the binder and the heat-diffusing dye is preferably from 1:10 to 10: 1, and particularly preferably from 2: 8 to 7: 3.

3. Other Optional Components Various additives can be appropriately added to the ink layer. As the additive, silicone resin,
Silicon oil (reaction hardening type is also possible), silicone modified resin, fluororesin, surfactant, peelable compound such as wax, metal fine powder, silica gel, metal oxide,
Fillers such as carbon black and resin fine powder, and curing agents capable of reacting with binder components (for example, radiation-active compounds such as isocyanates, acrylics, and epoxies) can be used. Further, as additives, heat-fusible substances for promoting transfer, such as waxes and higher fatty acid esters, are disclosed in JP-A-59-106.
No. 997.

(4) Production of Thermal Transfer Recording Ink Sheet The thermal transfer recording ink sheet is prepared by dispersing or dissolving the above-mentioned various components forming an ink layer in a solvent to prepare an ink layer forming coating liquid. , This is coated on the surface of the support,
It can be manufactured by drying. The binder is used by dissolving one kind or two or more kinds in a solvent or dispersing it in a latex form. Examples of the solvent include water, ethanol, tetrahydrofuran, methyl ethyl ketone, toluene, xylene, chloroform, dioxane, acetone, cyclohexane, and normal butyl acetate.

For the coating, a conventionally known surface-separated coating method using a gravure roll, an extrusion coating method, a wire bar coating method, a roll coating method and the like can be adopted. The ink layer may be formed on the entire surface or a part of the surface of the support as a layer containing a monochromatic heat diffusible dye, or a yellow ink layer containing a binder and a yellow dye, a binder. And a magenta ink layer containing a magenta dye and a cyan ink layer containing a binder and a cyan dye may be formed on the entire surface or a part of the surface of the support with a constant repetition along the planar direction. good.

Further, in addition to the three ink layers arranged in the plane direction, a black ink layer containing a black image forming substance may be interposed. Regarding the black ink layer, a clear image can be obtained by either the diffusion transfer type or the melt transfer type. The thickness of the ink layer thus formed is usually 0.2 to 10 μm, preferably 0.3 to 3 μm.
μm.

(5) Formation of Image by Sublimation-Type Thermal Transfer In sublimation-type thermal transfer, the ink layer of the ink sheet for thermal transfer recording and the image receiving layer of the image receiving sheet for thermal transfer recording are overlapped to form an ink layer and an image receiving layer. Gives image-wise thermal energy to the interface. Then, the thermal diffusible dye in the ink layer vaporizes or sublimates by an amount corresponding to the applied thermal energy, and is transferred to the image receiving layer side and received, so that an image is formed on the image receiving layer.

As the heat source for giving the thermal energy,
A thermal head is generally used, but other known ones such as a laser beam, an infrared flash, and a hot pen can also be used. When a thermal head is used as a heat source for applying thermal energy, the applied thermal energy can be changed continuously or in multiple steps by modulating the voltage or pulse width applied to the thermal head.

When laser light is used as a heat source for applying heat energy, the applied heat energy can be changed by changing the amount of laser light or the irradiation area. In this case, a laser light absorbing material (for example, carbon black or near-infrared absorbing material in the case of a semiconductor laser) may be present in the ink layer or in the vicinity of the ink layer in order to easily absorb the laser light.
When a laser beam is used, the thermal transfer recording ink sheet and the thermal transfer recording image receiving sheet may be sufficiently adhered to each other.

If a dot generator incorporating an acousto-optic element is used, heat energy corresponding to the size of a halftone dot can be applied. When an infrared flash lamp is used as a heat source for applying heat energy, heating is preferably performed via a colored layer such as black as in the case of using laser light. Alternatively, heating may be performed via a pattern or a halftone pattern that continuously expresses the shading of an image, such as black, or a negative pattern corresponding to a negative of the above-described pattern with a colored layer such as black on one surface. Heating may be performed in combination.

The thermal energy may be applied from the thermal transfer recording ink sheet side, from the thermal transfer recording image receiving sheet side, or from both sides, with priority given to the effective use of thermal energy. If you let
It is desirable to perform the heat transfer recording from the ink sheet side. By the above-described thermal transfer recording, a one-color image can be recorded on the image receiving layer of the thermal transfer recording image-receiving sheet. However, according to the following method, a color image of a color photographic tone composed of a combination of each color can also be obtained. For example, by sequentially replacing the yellow, magenta, cyan and, if necessary, black heat-sensitive transfer recording heat-sensitive sheets and performing heat transfer in accordance with each color, it is possible to obtain a color photographic color image composed of a combination of each color. .

Then, the following method is also effective. That is, instead of using the thermal transfer recording ink sheet of each color as described above, a thermal transfer recording ink sheet having an area formed by separately applying each color is used.
Then, first, the yellow color separation image is thermally transferred using the yellow area, then the magenta color separation image is thermally transferred using the magenta area, and thereafter, yellow, magenta, cyan, and necessary And a method of thermally transferring the color-separated image sequentially with the black color image. With this method, a color photographic color image can be obtained. However, more advantageously, this method has an advantage that the above-mentioned replacement of the heat-sensitive transfer recording heat-sensitive sheet is unnecessary.

II. Image recording card having gradation image by heat development transfer method An image recording card having gradation image by heat development transfer method is described in detail later. Can be obtained by bringing the photosensitive layer side into close contact with the image receiving surface of the image receiving sheet and transferring the dye to the image receiving layer by heating. (1) Image Receiving Sheet-Support-The image receiving sheet becomes the base material of the image recording card as it is after forming the gradation image with the heat-developable tourist material as described above. Therefore, the support of the image receiving sheet also serves as the support of the image recording card. Therefore, the support of the image receiving sheet can be formed of basically the same material as the support of the image recording card.

As the support, for example, paper, coated paper,
And various papers such as synthetic paper (polypropylene, polystyrene or a composite material obtained by laminating them with paper),
White vinyl chloride resin sheet, white polyethylene terephthalate base film, transparent polyethylene terephthalate base film, various plastic films or sheets such as polyethylene naphthalate base film, films or sheets formed of various metals,
Examples include films and sheets formed of various ceramics. When the support itself has a dye receiving ability, an image receiving layer described later may be omitted and the image receiving layer itself may be used as the support.

In the support, a white pigment such as titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, calcium carbonate, etc. is used in order to enhance the sharpness of an image formed in a later step. It is preferably added. The thickness of the support is usually 20 to 100.
0 μm, preferably 50 to 800 μm.

-Image-Receiving Layer- The image-receiving layer can be broadly classified into a case where the binder of the image-receiving layer forming the image itself has a dye-accepting ability and a case where a mordant capable of accepting a dye is contained in the binder. When the binder has a dye-accepting ability, the binder substance preferably used includes a polymer having a glass transition temperature of about 40 ° C. to about 250 ° C. Specifically, "Polymer Handbook Second Edition" (Joy Brand Wrap, E.
H. Immargat) John Willie and
Sands (Polymer Handbook 2nd. Ed. (J. Brandrup. E.
H. Immergut), a synthetic polymer having a glass transition temperature of about 40 ° C. or higher described in John Wiley & Sons) can be suitably used, and generally has a molecular weight of 2,000 to 2,000.
Polymers of the order of 00,000 are useful. These polymers can be used alone,
Also, two or more of them can be used in combination.

Specifically, the same polyvinyl chloride resins, polyesters, polycarbonates, polyethers and the like as described in the image receiving layer of the image recording card having an image formed by the sublimable dye can be used. In particular, poly (vinyl chloride) described in JP-A-59-223425 and polycarbonate described in JP-A-60-19138 are preferred. When the image receiving layer contains a mordant in the binder, a preferable example of the mordant is a polymer containing a tertiary amine or a quaternary amine ammonium salt. Specific examples include compounds described in U.S. Pat. No. 3,709,690 and JP-A-64-13546. Examples of the binder used to hold these mordants include hydrophilic binders such as gelatin and polyvinyl alcohol.

Similarly to the image receiving layer in which the mordant is dispersed in a binder, the dye receiving layer in which a hydrophobic polymer latex having dye receiving ability is dispersed in a hydrophilic binder is also used as the image receiving layer in the present invention. You can also. This image receiving layer may contain various known additives as long as the object of the present invention is not hindered. Examples of such additives include a stain inhibitor, an ultraviolet absorber, a fluorescent brightener, an image stabilizer, a development accelerator, an antifoggant, a pH adjuster (acid and acid precursor, base precursor, etc.), a thermal solvent, and an organic compound. Examples include fluorine compounds, oil droplets, surfactants, hardeners, matting agents, antifungal agents, and various metal ions.

-Writing layer-An image recording card having a gradation image is transferred to an I.V.
When a D card is used, it is particularly preferable to provide a writing layer. This is because the formation of the writing layer allows various information to be written on the ID card, which is convenient.

The description of the writing layer in the present invention will be replaced with the description of the “writing layer” described on page 4, upper right column, line 14 to page 4, lower right column, second line of JP-A-1-205155. , And a detailed description thereof will be omitted.

Further, a backing layer may be provided on the lower surface for the purpose of preventing static charge and curling.

-Manufacture of Image Receiving Sheet- The image receiving sheet can be manufactured in the same manner as in the image receiving sheet for thermal transfer recording. For a detailed description,
Since the description can be replaced with the description of the image receiving sheet for thermal transfer recording, the description is omitted.

(2) Photothermographic Material The photothermographic material is usually composed of a binder, a photosensitive silver halide, a reducing agent, and a dye-donating substance, an organic silver salt, and various kinds of photographic materials added as necessary. A photoreceptor formed on a support, which contains an additive for use. -Support-As the support, for example, a transparent or opaque synthetic plastic film such as glass, polypropylene film, cellulose acetate film, polyethylene terephthalate film, polyethylene naphthalate film,
Examples include various coated papers such as art paper, cast coated paper and baryta paper, polyethylene resin coated papers, and supports obtained by applying and curing an electron beam curable resin composition on these various supports.

-Binder- Examples of the binder include gelatin derivatives such as polyvinyl butyral, polyvinyl acetate, ethyl cellulose, polymethacrylate, polyvinyl alcohol, polyvinyl pyrrolidone, gelatin, phthalated gelatin, cellulose derivatives, proteins, starch, gum arabic and the like. And synthetic or natural polymer substances. These can be used alone or in combination of two or more.

In particular, it is preferable to use gelatin or a derivative thereof in combination with a hydrophilic polymer such as polyvinylpyrrolidone or polyvinyl alcohol, and particularly preferable is a mixed binder of gelatin and polyvinylpyrrolidone. The amount of the binder to be used is generally 0.05 to 50 g, preferably 0.2 to 20, per m ^{2 of the} support.

-Photosensitive silver halide- As the photosensitive silver halide, known ones can be used. For example, silver chloride, silver bromide, silver iodobromide, silver chlorobromide, and silver chloroiodobromide can be used. These silver halides have a uniform composition from the inside to the surface of the grains, and have a so-called core / shell type in which the composition differs between the inside and the surface, or a multilayered structure in which the composition changes stepwise or continuously. It may be silver.

As the shape of silver halide, those having a distinctive crystal habit such as cubic, spherical, octahedral, dodecahedral, and tetradecahedral, and those having no distinctive habit can be appropriately used. Further, as described in JP-A-58-111933, JP-A-58-111934, and Research Disclosure 22534, it has two parallel crystal planes, and these crystal planes are each other. Tabular silver halide grains having an area larger than the crystal plane and having a diameter to thickness ratio of about 5: 1 or more can also be used.

Further, for example, US Pat. No. 2,592,250
No. 3,220,613, No. 3,271,257, No. 3,317,322, No. 3,511,622, No. 353
No. 1291, No. 3447927, No. 376126
No. 6, No. 3703584, No. 3736140,
Nos. 3,761,276, JP-A-50-852.
No. 4, No. 50-38525, No. 52-15661,
The internal latent image type silver halide grains whose surface is not previously coupled can be used as described in JP-A-55-127549.

In the photosensitive halogenating agent, metal ion species such as iridium, gold, rhodium, iron and lead can be used in the form of a suitable salt in the grain formation stage. The grain size of such photosensitive silver halide is about 0.02 to 2 μm.
And preferably about 0.05 to 0.5 μm. A silver halide emulsion containing silver halide is formed by coexisting a photosensitive silver salt forming component with an organic silver salt described later and converting a part of the organic silver salt to a part of the photosensitive silver halide. Can be. The photosensitive silver halide emulsion can be chemically sensitized on the surface of silver halide grains with a known sensitizer (eg, active gelatin, inorganic sulfur, sodium thiosulfate, thiourea dioxide, sodium chloroaurate, etc.). . Chemical sensitization can also be performed in the presence of a nitrogen-containing heterocyclic compound.

Further, the photosensitive silver halide can be subjected to spectral sensitization to blue, green, red and infrared light by a known spectral sensitizing dye. Representative sensitizing dyes include cyanine merocyanine, trinuclear or tetranuclear cyanine, holopolar cyanine, styryl, hemicyanine, oxonol and the like. These sensitizing dyes are used in an amount of 1 .mu.mol to 1 mol, preferably 1 mol, per mol of silver halide.
0 μmol to 0.1 mol. The sensitizing dye may be added in any step of the silver halide emulsion. Specifically, at the time of formation of silver halide grains, at the time of removal of soluble salts, before the start of chemical sensitization, at the time of chemical sensitization, or at the time of chemical sensitization. It may be any time after the end of feeling. These light-sensitive silver halide and a photosensitive silver salt forming component, the photosensitive material 1 m ² per
It is used in the range of 0.01 to 50 g, preferably 0.1 to 10 g.

-Reducing Agent- The reducing agent is selected from those known for photothermographic materials according to a developing mechanism and a dye formation or release mechanism. The reducing agent referred to here includes a reducing agent precursor that releases the reducing agent during thermal development. US Pat. Nos. 3,351,286 and 3,761,270 as reducing agents.
Nos. 3,774,328, 3,342,599 and 3,719,492, Research Disclosure 12146, 15108, 1512
No. 7, JP-A-56-27432 and JP-A-56-27432.
Nos. 5628 and 57-79035, p-phenylenediamine-based and p-aminophenol-based developing agents, phosphate amide phenol-based developing agents,
Sulfonamidoaniline-based developing agents and hydrazone-based developing agents, phenols, sulfonamidophenols, hydroxybisnaphthyls, methylenebisphenols, ascorbic acids, 1-aryl-3-pyrazolidones, hydrazones, and the above various reductions There are precursors of the agent.

Further, the dye-providing substance can also serve as a reducing agent. Particularly preferred reducing agents are described in JP-A-56-146.
Nos. 133 and 62-227141.
N, N-dialkylamino) phenylsulfamate and its derivatives. One of the above various reducing agents may be used alone, or two or more thereof may be used in combination. The amount of the reducing agent, the photothermographic material 1 m ² per in the range of 0.01 to 100 mmol.

-Dye Donor-The photothermographic material of the invention is used as a black and white or color photographic material. When used as a color light-sensitive material, a dye-providing substance is used. Examples of the dye-providing substance include JP-A-62-44737 and JP-A-62-47737.
Nos. 129852 and 62-169158,
Couplers that form diffusible dyes described in the specification of Japanese Patent Application No. 1-200859, such as leuco dyes described in JP-A-61-88254, or U.S. Pat. No. 4,235,957, for example. And azo dyes used in the thermal developing dye bleaching method.
Preferable dye-donating substances are dye-donating substances that form or release a heat-diffusable dye, and particularly preferable are compounds that form a diffusible dye by a coupling reaction.

Hereinafter, a dye-providing substance that forms or releases a suitable diffusible dye will be described. A dye-providing substance that forms or emits a diffusible dye is one that can form or emit a diffusible dye, which corresponds to or reverses the reduction reaction of the photosensitive silver halide and / or organic silver salt. A good example is a negative dye-donating substance and a positive dye-donating substance.

Examples of the negative type dye-providing substance include those described in US Pat. Nos. 4,463,079 and 4,439,513, JP-A-59-60434, and JP-A-59-65839.
Nos. 59-71046, 59-87450, 59-88730, 59-123837, 59
-124329, 59-165,054, 59-
There can be mentioned reducing dye-releasing compounds described in each publication such as 165055. As another negative type dye-providing substance, for example, US Pat. No. 4,474,867,
Coupling type dye-forming compounds described in JP-A-59-12431, JP-A-59-48765, JP-A-59-159159, JP-A-59-231040, JP-A-1-185630 and the like can be mentioned. it can.

Still another preferred negative dye-providing substance of the coupling type dye-forming compound is represented by the following general formula (A)
Can be indicated by General formula (A); Cp- (J)-
(B) In the formula, Cp represents a coupler residue capable of forming a diffusible dye by coupling reaction with an oxidized form of a reducing agent, and J represents an active site of Cp reacting with the oxidized form of the reducing agent. B represents a linked divalent organic group, and B represents a ballast group.
The term "ballast group" as used herein refers to a group that makes a dye-donating substance non-diffusible during thermal development. For example, a group having 8 or more, preferably 12 or more carbon atoms, a non-diffusible substance due to the properties of a polymer chain or molecule. A group having a function (for example, a sulfo group in thermal development in the absence of water). Most preferred of the ballast groups are polymer chains.

As the coupling type dye-providing substance having a polymer chain as a ballast group, a substance having a polymer chain derived from a monomer represented by the general formula (II) is preferable. General formula (B); Cp- (J)-(Y) _k-
(Z)-(L) In the formula, Cp and J are the same as those defined in the general formula (a), Y represents an arylene group, an arylene group or an aralkylene group, and k represents 0 or 1. , Z represents a divalent organic group, and L represents an ethylenically unsaturated group or a group having an ethylenically unsaturated group.

Specific examples of the coupling type dye-forming compound represented by formula (a) or (b) include, for example, JP-A-59-124339 and JP-A-59-181345.
Nos. 60-2950, 61-57943, and 61-59336, Japanese Patent Application No. 1-2200.
Patent Application No. 859, U.S. Pat.
No. 51, 4650748 and 4656124. Among these, U.S. Patent Nos. 4,656,124 and 463 are particularly useful.
Polymer type dye-providing substances described in the specifications of JP-A Nos. 1251 and 4650748 are preferable.

Examples of the positive dye-providing substance include JP-A-59-55430 and JP-A-59-165054.
59-154445, 59-116655, 59-124327, 59-152440, 6
Compounds described in each gazette such as 4-135546 can be exemplified. These dye-providing substances can be used alone, or two or more of them can be used in combination. The amount of dye-providing material, can not be determined unconditionally because it varies depending on the type of other components of the dye-providing material type and the photothermographic material, generally photothermographic material 1 m ² per 0. 05 to 10 g, preferably 0.1 to 5 g.

As a method for incorporating the above-mentioned dye-providing substance into the photographic constituent layer of the photothermographic material, a known colloidal solution such as dibutyl phthalate, dioctyl phthalate or tricresyl phosphate may be used. Such as a method of emulsifying and dispersing in an aqueous solution of a hydrophilic colloid, a method of dissolving in an aqueous solution of an alkaline hydrophilic colloid and then neutralizing and dispersing with an acid, and a method of mechanically dispersing the hydrophilic colloid aqueous solution in a solid state by a known means, It can be appropriately selected from known methods.

-Organic silver salt- As the organic silver salt, known organic silver salts can be used for the purpose of improving sensitivity and developing property. For example, Japanese Patent Publication No. 43-4
No. 921, No. 49-52626, No. 52-14122
No. 2, No. 53-36224, No. 53-37626,
JP-B-53-362224, JP-B-53-37610 and the like, U.S. Pat.
Silver salts of long-chain aliphatic carboxylic acids and silver salts of carboxylic acids having a heterocyclic ring (for example, silver behenate, silver α- (1-phenyltetrazolethio) acetate, etc.) described in each of the publications such as JP-A-4105451. , Or JP-B-44-2658
No. 2, No. 45-12700, No. 45-18416,
No. 45-22815, JP-A-52-137321,
There are silver salts of compounds having an imino group described in JP-A-58-11838, JP-A-58-11839, and U.S. Pat. No. 4,123,274. Further, Japanese Patent Application Laid-Open No. Sho 61
Acetylene silver described in JP-A-249044 can also be used.

Among them, silver salts of compounds having an imino group are preferred, and silver salts of benzotriazole and its derivatives (for example, silver benzotriazole, silver 5-methylbenzotriazole, etc.) are particularly preferred. The organic silver salt,
They can be used alone or in combination of two or more. These preparations are prepared in an aqueous solution of a hydrophilic colloid such as gelatin, and the soluble salts can be removed and used as it is, or the organic silver salt can be isolated and mechanically pulverized and dispersed into solid fine particles. Can also be used. The amount of the organic silver salt used is 0.01 to 20 g, preferably 0.1 to 5 g, per m ^{2 of the} photothermographic material.

-Photographic additives-Examples of the additives include hot solvents, thermal development accelerators, antifoggants and the like. The thermal solvent is a compound which is liquefied during thermal development and has an action of promoting thermal development and thermal transfer of a dye, and is preferably a solid at room temperature. Examples of the hot solvent include U.S. Pat. Nos. 3,347,675, 3,667,959, 3,438,776 and 3,666.
No. 477, Research Disclosure (17643)
No.), JP-A-51-19525 and JP-A-53-24829.
No. 53-60223, No. 58-118640,
Nos. 58-198038, 59-229556, 59-68730, 59-84236, 60-
No. 191251, No. 60-232525, No. 60-1
No. 4241, No. 61-52643, No. 62-7855
No. 4, 62-42153, 62-44737,
Compounds described in JP-A-63-53548, JP-A-63-161446, JP-A-1-224951 and JP-A-2-863 can be exemplified.

Specifically, urea derivatives (dimethyl urea,
Diethylurea, phenylurea, etc.), amide derivatives (eg, acetamido, stearylamide, benzamide, p
-Toluamide, p-acetoxyethoxybenzamide,
Examples thereof include p-butanoyloxyethoxybenzamide, a sulfonamide derivative (eg, p-toluenesulfonamide), and a polyhydric alcohol (eg, 1,6-hexanediol, pentaerythritol, polyethylene glycol, etc.).

Among the above-mentioned thermal solvents, a water-insoluble solid thermal solvent is particularly preferred. A specific example is disclosed in JP-A-62-13 / 1987.
No. 6645, No. 62-139545, No. 63-535
No. 48, 63-161446, JP-A-1-2247
No. 51, No. 2-863, No. 2-120739, No. 2
Compounds described in each gazette such as JP-123354 can be mentioned. The above thermal solvent can be contained in any layer such as a photosensitive silver halide emulsion layer, an intermediate layer, a protective layer, an image receiving layer, and the content thereof is usually 10 to 500% by weight, preferably 10 to 500% by weight, based on the binder. 30 to 300% by weight.

Examples of the development accelerator include, for example, those described in
No. 177550, No. 59-111636, No. 59-1
No. 24333, No. 61-72233, No. 61-236
No. 548, JP-A-1-152454, JP-A-1-1046
No. 45, JP-A-1-110767, etc., and metal ions having an electronegativity of 4 or more described in Japanese Patent Application No. 1-274130 can be used.

Examples of antifoggants include higher fatty acids described in US Pat. No. 3,645,739,
Mercury salts described in JP-B-47-11113,
N-halides described in 1-47419, U.S. Pat. No. 3,700,457 and JP-A-51-50725.
Gazette, Japanese Patent Application No. 1-69994, 1-1104271
No. 4,049,849; the compounds having the ability to release a melt compound described in JP-A-49-125016; the arylsulfonic acids described in JP-A-49-125016 and JP-A-49-125016;
Lithium carboxylate described in JP-A-19, British Patent No. 1455271 and JP-A-50-10101
No. 9; sulfonic acids and thiosulfonic acids described in JP-A-53-19825; sulfur described in JP-A-51-3223;
Nos. 42529, 51-81124, and 55-
No. 93149, disulfides and polysulfides, rosins or diterpenes described in JP-A-51-57435, polymer acids having a carboxyl group or a sulfonic acid group described in JP-A-51-104338, Thiazolythion described in U.S. Pat. No. 4,138,265, JP-A-54-51821,
5-142331, U.S. Pat. No. 4,137,079, triazoles described in JP-A-55-140883.
Thiosulfinic acid esters described in JP-A No.
Nos. 9-46641, 59-57233, 59-5
No. 7234, di- or trihalides,
Thiols described in JP-A-59-111636,
JP-A-60-198540 and JP-A-60-22725
The hydroquinone derivative described in JP-A No. 5 (1993) -2005 can be exemplified. Still other preferred antifoggants include:
Antifoggants having a hydrophilic group described in JP-A-62-78554, polymer antifoggants described in JP-A-62-112452, JP-A-62-123456
And a fog inhibitor having a ballast group described in Japanese Patent Application Laid-Open Publication No. H11-209,086. Further, the non-colored color coupler described in JP-A-1-161239 is also suitable.

A base precursor can also be used as an additive. The base precursor is a compound that releases a basic compound by decarboxylation upon heating (such as guanazine trichloroacetic acid), a compound that decomposes by an intramolecular nucleophilic substitution reaction to release amines, and a water-soluble base. Base precursors that release a base by a reaction between a reactive metal compound (such as zinc hydroxide) and a compound (such as picolinic acid) that can form a complex with a metal ion that forms the same, and the like.

In addition, JP-A-56-130745,
Nos. 59-157637, 59-166943, 59-180537, 59-174830, and 5
Nos. 9-195237, 62-108249, 62
174745, 62-187847, 63-
97942, 63-96159, JP-A-1-68
Antifoggants described in each publication such as 746 can also be used.

In the present invention, in addition to those described above as additives, antihalation dyes, colloidal silver, fluorescent brighteners, hardeners, antistatic agents, surfactants, inorganic and organic matting agents, anti-fading agents Agents, ultraviolet absorbers, antifungal agents, white background color tone adjusters and the like can be used. These are described in detail in Research Disclosure Nos. 17029 and 29996, and JP-A-62-13 / 1987.
Nos. 5826 and 64-13546. These various additives can be appropriately contained not only in the photosensitive layer but also in any layer such as an intermediate layer, an undercoat layer, a protective layer or a backing layer.

-Layer Structure- The photothermographic material of the present invention contains at least (a) a photosensitive silver halide emulsion, (b) a reducing agent, and (c) a binder, and further contains (d) organic silver. Is preferred. When a color photographic material is used, (e) a dye-providing substance is further contained. These may be contained in a single photographic constituent layer, or may be added separately in two or more layers. Specifically, the components (a), (b), (c), and (d) are added to one layer, and the component (e) is added to an adjacent layer, or (a), The components (c), (d) and (e) can be added to a single layer, and the component (b) can be added to another layer. Further, the photosensitive layer having substantially the same color sensitivity can be composed of two or more photosensitive layers, and can be a low-sensitivity layer and a high-sensitivity layer, respectively.

In order to form a full-color image with the photothermographic material of the present invention, usually, the photothermographic material has three types of photosensitive layers having different color sensitivities. Allow the dye to form or release.

In this case, the yellow dye (Y) is generally used for the blue light-sensitive layer (B), the magenta dye (M) is used for the green light-sensitive layer (G), and the red light-sensitive layer (R) is used. Contains cyan dye (C)
Are combined, but the present invention is not limited to this, and any combination is possible. Specifically, (B
-C)-(GM)-(RY), (infrared-sensitive -C)
Combinations such as-(GY)-(RM) are also possible.

The layer constitution of each layer is arbitrary, and R, G, B, R = G-infrared, G-R-
It is also possible to adopt a layer configuration such as infrared. The photothermographic material according to the invention may optionally include a non-photosensitive layer such as an undercoat layer, an intermediate layer, a protective layer, a filter layer, a backing layer, and a release layer, in addition to the photosensitive layer.

(3) Formation of Image by Thermal Development Transfer Method A gradation image by the thermal development transfer method can be formed as follows. That is, first, the photothermographic material is exposed for an image. Exposure light sources include tungsten lamps, halogen lamps, xenon lamps, suigin, etc.
Examples include an RT light source, a FO-CRT light source, a light emitting diode, a laser beam (for example, a gas laser, a dye laser, a YAG laser, a semiconductor laser, and the like).
Any one of these various exposure light sources can be used alone, or any one of them can be used in combination. Further, a light source in which a semiconductor laser and an SHG element (second harmonic generation element) are combined can also be used. In addition, exposure can be performed by light emitted from a phosphor excited by an electron beam, X-ray, γ-ray, α-ray, or the like.

The exposure time is determined by performing one screen with one exposure,
Alternatively, it depends on whether or not exposure is performed digitally for each pixel. In the case of one exposure, the exposure time is usually 0.001.
The exposure time when performing digital exposure for each pixel is in the range of 10 <-9> to 10 <-2> seconds. At the time of exposure, a color filter can be used as necessary to adjust the color temperature of the exposure light source, or scanner exposure can be performed using laser light or the like.

After the exposure, the photothermographic material is heated and developed.
That is, 70-200 ° C. after exposure, preferably 90-200 ° C.
The photothermographic material is heated to 170 ° C. As a heating means, a method of contacting with a heated heat block or surface heater, a method of contacting with a heat roller or a heat drum, a method of passing through an atmosphere maintained at a high temperature, a method using a high frequency heating method, etc. are applied. can do. There is no particular limitation on the heating pattern, a method of heating at a constant temperature, a method of heating at a high temperature in the early stage of development, and a method of heating to a low temperature state in the second half of development, or the reverse method, or changing the temperature region in multiple stages An arbitrary method such as a method of changing the temperature or a method of continuously changing the temperature can be employed. In some cases, heating to the above temperature range may be performed during exposure. The heating time is from 1 to 180 seconds, preferably from 2 to 120 seconds. By the heat development, an image-like dye image is formed on the photothermographic material.

Next, the photosensitive layer on which the dye image is formed and the image receiving surface of the image receiving sheet are brought into close contact with each other, and the dye image is thermally diffused and moved to the image receiving surface by heating. The dye image may be transferred to the image receiving layer by bringing the photosensitive layer and the image receiving layer into close contact with each other at the time of thermal development, or the heat developing photosensitive material and the image receiving layer of the image receiving sheet may be brought into close contact with each other after the heat development, and heated. The dye image may be transferred to the image receiving layer. Further, the photothermographic material is pre-heated to a suitable temperature of 70 to 160 ° C. before exposure, or disclosed in JP-A-60-143338 and JP-A-60-143338.
Immediately before development, at least one of the photothermographic material and the image receiving layer is
It is also possible to preheat to ~ 120 ° C.

III. Formation of Mark (Mark) The image recording card of the present invention has a mark (mark) that straddles the image forming area and the non-image forming area of the gradation image formed on the image receiving layer. Therefore, if the image recording card is
In the case of a D card, it is possible to prevent tampering of a gradation image such as a face image, which is an important issue.

<< Transfer Sheet for Forming Marks> To form a mark on an image receiving layer having a gradation image, a transfer sheet for forming marks can be used. The transfer sheet for forming a mark can be formed of a support and a mark transfer layer releasably formed thereon. A release layer may be provided between the support and the mark in order to easily release the mark transfer layer from the mark forming transfer sheet. Such a release layer can have the same configuration as the release layer employed in the thermal transfer recording medium of the fusion type thermal transfer recording system. Further, even if the release layer is not particularly formed, the self-peeling property can be imparted to the mark transfer layer by appropriately selecting the material of the support and the material forming the mark transfer layer.

As a transfer sheet of a preferred embodiment for forming a marking, a sheet portion for a marking transfer layer obtained by laminating the release layer or the adhesive layer and the marking in this order on a support is provided.
Sheets formed by division can be given.
The thickness of the marking transfer layer is usually 0.5 to 20.0 μm, and preferably 1.0 to 10.0 μm.

As the marking transfer layer, a light-transmitting resin sheet on which a marking (mark) is formed can be used. Then, the light transmissive resin sheet on which the marks (marks) are formed is bonded to the gradation image forming area by hot stamping, whereby a mark extending over the gradation image forming area and the non-forming area can be formed. . Hot stamping methods include, for example, an up-down method in which a silicone heating rubber sheet is used to transfer a hot plate attached to the bottom of a cylinder that moves up and down to the convex surface or front surface of the material to be transferred by heating and pressing, or a silicone rubber. There is a roll method in which a press roller is rotated while being indirectly heated, so that a stamping foil and a surface to be transferred are pressed and transferred.

As the light transmitting resin, a conventionally known transparent thermoplastic resin can be used. Specific examples include polyester resins, polyvinyl chloride resins, polyolefin resins, polyacrylate resins, and polymethacrylate resins. The tally (mark) itself is formed by a known method such as a hot stamp for printing a metal foil (a foil) such as a chromium alloy by heating and pressing, and a hot-melt transfer printing for thermally transferring ink from a hot-melt ink layer. It can be formed in a light transmitting resin.

In the present invention, a tally (mark) is used.
A hologram can be used. The hologram can be formed by bonding the hologram sheet to the gradation image forming surface of the image receiving layer. As an adhesive for bonding the hologram, a thermoplastic resin such as a vinyl chloride-vinyl acetate copolymer, an ethylene-vinyl acetate copolymer, or a polyester resin is usually used.

As the hologram sheet, a relief hologram sheet can be used. The relief hologram is formed by laminating a hologram forming layer and a hologram effect layer on a support film in this order. More specifically, the hologram sheet is a resin layer that is solid at room temperature and has a thermoforming property, for example, a solid and thermoplastic electron beam at room temperature, on the surface of a support film such as a polyethylene terephthalate sheet film. A curable resin layer (hologram forming layer) is formed, and a hologram master on which a hologram interference pattern is formed on unevenness is pressed into contact with the surface to transfer the uneven shape to the resin layer surface,
The hologram cured layer of a thin film made of a material having a different refractive index from the hologram-forming layer (for example, an aluminum vapor-deposited film) that has sufficient transparency and large reflectivity at a certain angle on the surface of the uneven shape and is further cured. It can be obtained by forming. As these forming materials and forming methods, conventionally known materials and methods can be adopted.

When the mark is formed by the relief type hologram, the hologram image is three-dimensionally reproduced by specific reproduction light such as daylight, white light such as illumination light, and laser light. A hologram in which an image is reproduced by white light such as daylight or illumination light has excellent decorativeness because a hologram image is observed even in a normal state. On the other hand, a type in which an image is reproduced by a laser beam is excellent in discoverability of forgery and falsification.

[0114]

EXAMPLES (Example 1) A card-size image-receiving sheet was manufactured as follows. A wide white vinyl chloride sheet having a thickness of 750 μm, which is obtained by heat-welding a hard transparent vinyl chloride sheet having a thickness of 150 μm on both sides of a 450 μm thick white vinyl chloride sheet, is cut vertically and horizontally. 0mm × 85.5m
m was obtained. The coating liquid for an image receiving layer and the coating liquid for an adhesive layer having the following composition are coated on the image receiving sheet substrate by a wire bar method, and the solvent is removed by drying to form an adhesive layer having a thickness of 3 μm on the support. And an image receiving layer having a thickness of 7 μm formed thereon.

<Coating Solution for Forming Image Receiving Layer> Polyvinyl Chloride Resin 2.0 parts [TK600, manufactured by Shin-Etsu Chemical Co., Ltd.] Vinyl chloride-malein Mono-2-ethylhexyl acid copolymer 3.5 parts [vinyl chloride content: 85.1%, Tg: 75 ° C, degree of polymerization: 500] Metal ion-containing compound .............. 4.0 parts _{[[Ni (NH 2 COCH 2} NH 2) 3] 2+ · 2 [(C 6 H 5) 4 B] -] polyester-modified silicone Resin: 0.5 parts [Shin-Etsu Silicone Co., Ltd., X-24-8300] Methyl ethyl ketone: 80 parts Cyclohexanone ... 10 copies.

<Adhesive Layer Forming Coating Solution> Vinyl chloride resin vinylite VYHH (manufactured by Union Carbide Co., Ltd.) 10 parts Methyl ethyl ketone ... 90 parts.

Next, a coating solution for a writing layer having the following composition is applied to the surface of the support opposite to the image receiving layer by reverse coating using a gravure roll formed by partially etching and dried. The thickness is 3.5μ
m writing layers were formed.

<Composition of Coating Liquid for Writing Layer> Saturated polyester resin (Byron 200, manufactured by Toyobo Co., Ltd.) 90 parts by weight Calcium carbonate (Shiraishi calcium, etc., Brilliant 15) 25 parts by weight Toluene / methyl ethyl ketone (weight ratio 1: 1) 400 parts by weight

A sheet having a heat-fusible ink layer was produced as follows. That is, a coating liquid for a hot-melt ink layer was applied to one side of the surface of a polyethylene terephthalate sheet having a thickness of 4.5 μm by a wire bar method, and dried to form a hot-melt ink layer having a thickness of 1.2 μm. . An anti-sticking layer having a thickness of 0.6 μm was formed by applying an anti-sticking layer coating solution having the following composition to the surface of the polyethylene terephthalate sheet opposite to the hot-melt ink layer.

<Composition of Coating Liquid for Hot Melt Ink Layer> Carnauba Wax 1 part Ethylene-vinyl acetate copolymer (Mitsui TUPHON CHEMICAL EV-40Y) 1 part carbon black 6 parts Phenol resin (Arakawa Chemical Tamanoru 521) 12 parts Methyl ethyl ketone ... 80 parts.

An image was formed on the image receiving layer as follows.
That is, the image receiving layer of the image receiving sheet is superimposed on the sublimable dye-containing layer of the sublimation type thermal transfer recording ink sheet described below, and the output is 0.23 W / dot, pulse using a thermal head from the sublimation type thermal transfer recording ink sheet side. 0.3-4.5 msec width, dot density 16 dots / mm
By heating under the conditions described above, a human face image with gradation was formed on the image. Next, a heat-fusible ink layer was overlaid, and an output of 0.5 W was applied to the heat-fusible ink layer using a thermal head.
By heating under the conditions of / dot, pulse width of 1.0 msec, and dot density of 16 dots / mm, character information was transferred to portions other than the human face image portion.

-Production of Thermal Transfer Recording Ink Sheet- The following raw material compositions were mixed to prepare a coating liquid for an ink layer containing a heat-diffusible dye. Ink layer forming coating liquid (yellow); heat diffusible dye [shown by the following chemical formula 2] 3.0 parts Polyvinyl butyral 3.0 parts [S-LEC BX-1 manufactured by Sekisui Chemical Co., Ltd.] Methyl ethyl ketone ... 44 parts Dioxane ... 40 parts Cyclohexanone ... ... 10 parts Ink layer forming coating liquid (magenta); thermal diffusible dye [shown by the following formula 3] 3.0 parts Polyvinyl butyral 3.0 parts [SREC BX-1 manufactured by Sekisui Chemical Co., Ltd.] Methyl ethyl ketone 44 parts Dioxane 40 parts Cyclohexanone ... 10 parts Ink layer forming coating liquid (cyan); heat diffusible dye [shown by the following chemical formula 4] 3.0 parts Polyvinyl butyral 3.0 parts [SREC BX-1 manufactured by Sekisui Chemical Co., Ltd.] Methyl ethyl ketone 44 parts Dioxane 40 parts Cyclohexanone ... 10 copies.

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Next, the two kinds of ink layer forming coating liquids were
On a 6 μm-thick corona-treated polyethylene terephthalate film [manufactured by Toray Industries, Inc.], using a wire bar, apply and dry at a distance in the plane direction so that the thickness after drying becomes 1 μm each, and support it. A yellow dye-containing layer, a magenta dye-containing layer, and a cyan dye-containing layer are formed on the body, and a nitrocellulose solution containing a silicone resin [SP-2105, manufactured by Dainichi Seika Co., Ltd.] By dropping one or two drops with a dropper and spreading over the entire surface, and performing a back surface treatment coating, an ink sheet for thermal transfer recording was obtained.

-Preparation of Sheet Having Mark Transfer Layer- <Hot Stamping Sheet for Mark Transfer> A 6 μm transparent polyethylene terephthalate film (Diafoil Co., Ltd.) whose surface was subjected to corona discharge treatment was coated on one surface with an ultraviolet curable resin (phosphazene). Resin, Idemitsu PPZ U2000
After coating Idemitsu Petrochemical Co., Ltd.) to a thickness of 0.6 μm,
After forming a transferability-improved layer cured by irradiating ultraviolet rays, an index transfer layer having the following structure was formed, thereby forming a 10.0 μm-thick index transfer layer as a whole. On the opposite surface of the polyethylene terephthalate sheet, an anti-sticking layer coating liquid having the same composition as that used for the sheet having the above-mentioned hot-melt ink layer was applied to form a 0.6 μm thick anti-sticking layer. A layer was formed.

<Structure of Marking Transfer Layer> Hologram Recording Layer
3 μm adhesive layer 7 μm vinyl chloride resin (Vinylite VYHH Union Carbide Co., Ltd.) Using a hot stamping machine MP-6X manufactured by Co., Ltd., hot stamping was performed so as to cover a part of the portrait on the card as shown in FIG.

(Example 2) The method of forming a human face image having gradation in the image in Example 1 was the same as that of Example 1 except that the following photothermographic material was used. To make an image recording card.

Preparation of Silver Iodobromide Emulsion (Em-1) A silver iodobromide emulsion (Em-1) was prepared using the following five types of solutions.
-1) was adjusted. The seed emulsion was a silver iodobromide emulsion (SE-1) having a silver iodide content of 2 mol% and an average grain size (length of one side of a cube having the same volume; the same applies to the following description).
Was used.

[0131]

At 40 ° C., JP-A-57-92523
And (Solution B-1) and (Solution C) using a mixing stirrer described in JP-A-57-92524.
-1) was added at an equal flow rate by a double jet method. During the simultaneous mixing, the pH was kept constant at 8.0, and control was performed while changing the flow rate of (Solution E-1) using a roller tube pump capable of changing the flow rate.

The pAg was determined between (solution B-1) and (solution C-1)
Is adjusted to 8.8 at the time when the addition of (Solution B-1) is started, and then continuously changed in proportion to the addition amount of (Solution B-1), and the addition of (Solution B-1) and (Solution C-1) is completed. Sometimes 9.3
It controlled so that it might become. The pAg was controlled by changing the flow rate of (Solution D-1) using a roller tube pump with a variable flow rate. (Solution B-1) and (Solution C-1) were added at an allowable maximum speed (critical speed) without generation of small particles, and when 296 ml of (Solution C-1) was added, 4.5 × 10 5 ^-7 mole of hexachloroiridium (I
V) Potassium acid (K ₂ IrCl ₆ ) was added as an aqueous solution.

Further, the addition of (Solution B-1) and (Solution C-1) was continued, and the operation was completed when (Solution C-1) was completely added. Subsequently, by (Solution D-1) (Solution E-1),
The pAg was adjusted to 10.4 and the pH was adjusted to 6.0, and the solution was washed with desalinated water by a conventional method. Then, ossein gelatin 45.6
After dispersing in an aqueous solution containing 5 g and adding 0.21 g of a compound ST-2 represented by the following chemical formula 1, the total amount was adjusted to 1 with distilled water.
Adjust to 200 ml, and further add (Solution D-1) and (Solution E-
PAg of 8.5 at 40 ° C. and pH
Was adjusted to 5.8.

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Emulsion (Em-1) thus obtained
Is a silver iodobromide emulsion having a silver iodide content of 2 mol%. As a result of observation with an electron microscope, the emulsion was found to be a monodisperse emulsion having an average particle size of 0.25 μm. Although the shape of the obtained silver iodobromide grains was almost cubic, the corners and sides were slightly rounded.

Preparation of Photosensitive Silver Halide Emulsion (a) Preparation of Red-Sensitive Emulsion (R-1) 300 ml of silver iodobromide emulsion Em-1 was stirred while being kept at 52 ° C. 50 mg of the sensitizing dye (a) and 100 mg of the sensitizing dye (b) represented by the following chemical formula (1) were each added as a 1% methanol solution, and 10 minutes later,
5 μmol of sodium thiosulfate was added as a 0.1% aqueous solution, and after 60 minutes, 10 μmol of chloroauric acid (as a 0.05% aqueous solution) and 20 μmol of ammonium thiocyanate (a 0.1% aqueous solution) were added. Further 52
Optimum time (30-80 minutes) while keeping the temperature at ℃ and stirring
After aging, the temperature was lowered to 40 ° C., and 250 mg of 4-hydroxy-6-methyl-1,3,3a, 7-tetraazaindene, 5 mg of 1-phenyl-5-mercaptotetrazole, and fog represented by the following formula (8): Inhibitor ST-1
Was added as a 5% methanol solution to stabilize the emulsion, and the total volume was adjusted to 540 ml with ion-exchanged water. Thus, a red-sensitive emulsion R-1 represented by the formula was obtained.

Sensitizing dye (a)

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Sensitizing dye (b)

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ST-1

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(B) Preparation of green-sensitive emulsion (G-1) 300 ml of silver iodobromide emulsion Em-1 was stirred while being kept at 52 ° C., and 150 mg of the following sensitizing dye (c) was converted into a 1% methanol solution. 10 minutes later, 15 μmol of sodium thiosulfate was added as a 0.1% aqueous solution.
0 minutes later, chloroauric acid (as 0.05% aqueous solution) 5 μmo
l and ammonium thiocyanate (0.1% aqueous solution) 10
μmol was added. The temperature was kept at 52 ° C as it was, and aging was continued for 75 minutes while stirring, then the temperature was lowered to 40 ° C and 4-hydroxy-6-methyl-1,3,3a, 7-
250 mg of tetraazaindene, 5 mg of 1-phenyl-5-mercaptotetrazole and the antifoggant ST
The emulsion was stabilized by adding 25 mg of -1 as a 5% methanol solution, and the total volume was adjusted to 540 ml with ion-exchanged water. Thus, the green-sensitive emulsion G-
1 was obtained.

Sensitizing dye (c)

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(C) Preparation of infrared-sensitive emulsion (IR-
1) 300 ml of silver iodobromide emulsion Em-1 was kept at 52 ° C. and stirred, and 10 mg of sensitizing dye (d) represented by the following formula (10) was added to 0.1 ml.
25 mg of a sensitizing dye (e) represented by the following formula (11) was added as a 0.1% methanol solution, and 10 minutes later, 15 μmol of sodium thiosulfate was added as a 0.1% aqueous solution. After a further 60 minutes, 5 μmol of chloroauric acid (as a 0.05% aqueous solution) and 10 μmol of ammonium thiocyanate (a 0.1% aqueous solution)
Was added. The temperature was kept at 52 ° C as it was, and aging was continued for 55 minutes while stirring, then the temperature was lowered to 40 ° C, and 4-hydroxy-6-methyl-1,3,3a, 7-tetraazaindene 250 mg, 1-phenyl The emulsion was stabilized by adding 5 mg of -5-mercaptotetrazole and 25 mg of the antifoggant ST-1 (Formula 8) as a 5% methanol solution, and the total amount was adjusted to 540 ml with ion-exchanged water. Thus, an infrared-sensitive emulsion IR-1 was obtained.

Sensitizing dye (d)

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Sensitizing dye (e)

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Preparation of Organic Silver Emulsion At 50 ° C., JP-A-57-92523 and JP-A-57-92523
Using a mixing stirrer disclosed in Japanese Patent No. 92524, 300 g of denatured gelatin in which 90% or more of the amino groups of the gelatin were replaced by phenylcarbamoyl groups, 2,400 ml of ion-exchanged water, 9.18 g of benzotriazole,
An aqueous solution in which 51 ml of 8% ammonia water is dissolved (OA-
In 1), 1,420 ml of an aqueous solution (OB-2) containing 250 g of benzotriazole and 169 ml of 28% aqueous ammonia, and 1,420 ml of an aqueous solution containing 360 g of silver nitrate and 336 ml of 28% aqueous ammonia (OB) OC-1) was added at an equal flow rate by a double jet method.
The pH during mixing was controlled at 9.3, and the pAg during mixing was controlled at 11. After completion of the addition, 60 g of denatured gelatin in which 90% or more of the amino groups of the gelatin were substituted by phenylcarbamoyl groups was added as a 20% aqueous solution, and then the pH was adjusted to 5.5 with 56% acetic acid, followed by sedimentation to dissolve. Excess soluble salts were removed. In addition, deionized water 4,800m
and pH was adjusted to 6.0 with a 10% aqueous potassium hydroxide solution.
And dispersed for 5 minutes, then 30 g of the above-mentioned modified gelatin
In a 20% aqueous solution and then added with 3.5N sulfuric acid
H was adjusted to 4.5 and sedimented to remove excess dissolved soluble salts. Then the pH was increased to 1. After adding 0.45 g of the compound ST-2, the mixture was made up to a total amount of 2,520 ml with ion-exchanged water, and dispersed at 50 ° C. for 30 minutes to prepare an organic silver salt emulsion.

Preparation of Thermal Solvent Dispersion Station-1 25 g of thermal solvent-1 represented by the following formula
The dispersion was dispersed in an alumina pole mill into 100 ml of a 0.5% aqueous solution of polyvinylpyrrolidone containing 0.04 g of surfactant-1 (Alkanol XC, manufactured by DuPont) represented by No. 3 to make 120 ml.

Thermal solvent-1

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Surfactant-1

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-(1) Preparation of Dye Donor Dispersion-1 Polymer dye donor (1) 35.5 shown in the following formula 14
g, 2.4 of color stain inhibitor W-1 represented by the following chemical formula 15
g was dissolved in 200 ml of ethyl acetate, 10.0 g of di- (2-ethylhexyl) phthalate, and 10.0 g of tricresyl phosphate and mixed with 124 ml of a 15% by weight aqueous solution of surfactant-15 and 720 ml of a 6% aqueous solution of gelatin. After emulsifying and dispersing with an ultrasonic homogenizer and removing ethyl acetate by distillation, the total amount was adjusted to 795 ml with ion-exchanged water to obtain a dye-donating substance dispersion liquid-1.

Polymeric dye-donating substance (1)

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Stain Prevention Agent W-1

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-(2) Dye-donating substance dispersion liquid-2 The same dye-donating substance as the dye-donating substance dispersion liquid 1 except that the dye-donating substance was changed to the high-molecular-weight dye-donating substance (2) shown in the following formula (16). It is a dispersion.

Polymeric dye-donating substance (2)

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-(3) Dye-donating substance dispersion liquid-3 This is the same as the dye-supplying substance dispersion liquid 1, except that the dye-donating substance is changed to a polymer dye-donating substance (3) represented by the following formula (17). It was obtained in the same manner as described above.

Polymeric dye-donating substance (3)

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Preparation of Reducing Agent Solution 20.0 g of a reducing agent (R-1) represented by the following chemical formula 18, 13.3 g of a reducing agent (R-2) represented by the following chemical formula 19, and surface activity represented by the following chemical formula 20 0.50 g of Agent-2 was dissolved in water to adjust the pH to 7.0 to obtain a 250 ml reducing agent solution.

Reducing agent (R-1)

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Reducing agent (R-2)

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Surfactant-2

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Preparation of Photosensitive Material 1 Using the organic silver salt dispersion, silver halide emulsion, and dye-donor dispersion prepared as described above, multilayered color photosensitive materials 1 as shown in Tables 1 and 2 were prepared. . Coating is performed by simultaneously applying and drying two layers of the backing layer-1 and the backing layer-2 on a support provided with a double-sided subbing layer, and then coating the first to third layers on the opposite surface. Was simultaneously applied and dried in three layers, and the fourth to seventh layers were further applied thereon by simultaneous application of four layers. First to seventh layers and backing layers 1 and 2
Each contain surfactant-3 represented by the following chemical formula (2) as a coating aid, and each layer has a reaction product (reaction ratio) of tetrakis (vinylsulfonylmethyl) methane and potassium taurine as a hardener. 1: 0.75 (molar ratio)) was added at a rate of 0.04 g / g of gelatin.

Surfactant-3

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The first to seventh layers were coated after adjusting the coating solution to pH 6.

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[Table 1]

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[Table 2]

The ultraviolet absorbers (UV
-1) is the following formula 22, DA-1 is the following formula 23, the anti-irradiation dye-1 is the following formula 24, and the anti-irradiation dye-2 is the following formula 25; No. 3 is represented by the following formula 26, respectively.

UV-1

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DA-1

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Anti-irradiation dye-1

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Anti-irradiation dye-2

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Anti-irradiation dye-3

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Preparation of image receiving member Compound (SA-1) 0.7 represented by the following formulas 27 to 30
g / m ² , (SA-2) 0.8 g / m ² , (TP-
1) A polyvinyl chloride layer (image receiving layer) containing 0.8 g / m ² and (AC-1) 0.2 g / m ² was applied to prepare an image receiving member.

(SA-1)

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(SA-2)

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(TP-1)

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(AC-1)

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[0202]

According to the image recording card of the present invention, since the image frame of the image information-containing image (face image) formed on the image recording card has a mark (mark), the image recording card is It is possible to prevent information falsification and falsification, which are important issues in nature.

[Brief description of the drawings]

FIG. 1 is an embodiment of an image recording body of the present invention.

FIG. 2 is an embodiment of an image recording body having a heat transfer film of a light transmitting resin of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image recording card 2 Gradation image 3 Tally (mark) 4 Support 5 Image receiving layer 6 Face image frame 7 Image recording body 8 Light transmitting resin thermal transfer film

Continuation of the front page (72) Inventor Tomoki Kawamura 1 Sakuracho, Hino-shi, Tokyo Inside Konica Corporation (56) References JP-A-4-285395 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B42D 5/00-15/10

Claims (2)

(57) [Claims] 1. A support, an image receiving layer having a gradation image formed by thermal transfer or thermal development of a sublimable dye, and a light transmitting resin
An image recording card having a mark formed as a thermal transfer film . 2. The method according to claim 1, wherein the support and the sublimable dye are thermally transferred.
Or image receiving layer having a gradation image formed by thermal development
Formed at the boundary of the formation area of the gradation image,
An image recording card having a marking made of a ram .