JPH0250148A - Heat developable color photosensitive material - Google Patents

Abstract

PURPOSE:To allow recording of color images having high image quality, character information, signal information, etc., by incorporating a compd. which forms or releases a dye having absorption max. at the wavelength longer than 725nm into a dye donative material. CONSTITUTION:The dye donative material is the compd. which forms or releases the dye having the absorption max. at 400-700nm and further, contains the compd. which forms or releases the dye having the absorption max. at the wavelength longer than 725nm. The red dye donative material is so added that the red dye density of the resulted image attains >=0.3, more preferably >=0.5 reflection density in the measurement by 850nm light. The red dye donative material is added into a silver halide-added layer or the adjacent layer thereof and is preferably added to the same layer as the cyan dye donative material. The color images having the high image quality, the character information, the signal information, etc., are recorded in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat-developable color photosensitive material, and in particular, to a heat-developable color photosensitive material, which can obtain a color image by heat development and an information record readable with light with a wavelength longer than 750 nm. The invention relates to heat-developable color photosensitive materials.

[Background of the Invention 1] In recent years, in information recording materials such as various ID cards, development has been made to provide not only color image information but also character information or signal information such as a bar code to the same recording material. This recording material, on which character information or signal information is recorded, must be mechanically read using light with a wavelength longer than 750 ni, such as a semiconductor laser or light emitting diode, in order to speed up information determination and prevent misidentification. is often the case.

On the other hand, since silver halide color light-sensitive materials are the best in terms of the quality of color images, information recording materials using silver halide color light-sensitive materials are also being developed. However, since conventional silver halide color light-sensitive materials are processed by a wet method, many problems remain in terms of ease and speed of processing.

Heat-developable color light-sensitive materials, especially diffusion transfer type heat-developable color light-sensitive materials, are known as materials that have the good image quality characteristic of silver halide color light-sensitive materials and are superior in terms of ease and speed of processing. It is being

This diffusion transfer heat-developable color photosensitive material and image forming method are described in, for example, Japanese Patent Application Laid-open Nos. 59-12431 and 59-1591.
No. 59, No. 59-181345, No. 59-229
No. 556, No. 60-2950, No. 61-52643
No. 61-61158, No. 61-61157, No. 59-180550, No. 61-132952,
No. 61-139842, U.S. Patent No. 4.595.6
No. 52, No. 4.590.154 and No. 4,584.2
It is described in No. 67, etc.

However, in the above-mentioned diffusion transfer type heat-developable color photosensitive materials, since a dye-providing substance that forms or releases dyes of three colors, yellow, magenta, and cyan, is usually used, it is difficult to record with light having a wavelength longer than 750 na+. It is difficult to read the information that is displayed.

[Object of the Invention] An object of the present invention is to solve the problems of the prior art.

An object of the present invention is to provide a heat-developable color photosensitive material that can record high-quality color images, text information, signal information, etc., and that can be processed easily and quickly.

Another object of the present invention is to provide a heat-developable color photosensitive material in which character information, signal information, etc. that can be read with light having a wavelength longer than 750 nm can be recorded simultaneously with the formation of a color image.

[Structure of the Invention] As a result of intensive research to achieve the above object, the present inventors have discovered that a heat-developable color photosensitive material having at least a photosensitive silver halide, a reducing agent, and a dye-providing substance on a support is provided with At least one of the above is a compound that forms or releases a dye having an absorption maximum at a wavelength of 400 nm to 700 nl, and further contains a compound that forms or releases a dye that has an absorption maximum at a wavelength longer than 725 nm. It has been found that a developable color photosensitive material meets the above objectives of the present invention.

The present invention will be explained in more detail below.

First, a compound (hereinafter referred to as an infrared dye donor) that emits or forms a dye having an absorption maximum at a wavelength longer than 725 tv (hereinafter referred to as an infrared dye) will be described. The infrared dye-providing substance may be any compound that releases or forms an infrared dye in response to or inversely to the development of silver; for example, U.S. Pat.
Reducing dye-releasing compounds described in Light Il 4 such as Q, U.S. Pat.
431 etc. MingtIAI! Compounds in which the dye of the coupled dye-releasing type compound described in 1. is used as an infrared dye are used, and the coupled dye-forming compound is particularly preferred.

As the coupling dye-forming compound that forms an infrared dye (hereinafter referred to as an infrared coupler), a naphthol coupler represented by the following general formula (1) or (2) is preferred.

In the general formula (1), when n is 2 or 3, 2 or 3 xl may be the same or different.

NRI represents SO2R2 or a halogen atom.

(However, R1 and R2 each represent a hydrogen atom, an alkyl group, or an aryl group.) m represents an integer of 0 to 4, and when m is 2 or more, Y may be the same or different.

2 represents a hydrogen atom or a coupling-off group.

General formula (2) In the formula, x1 represents an electron-withdrawing group (for example, a halogen atom (chlorine, bromine, fluorine, etc.), a cyano group, a carboxylic acid ester group, a carboxylic acid amide group, a sulfonic acid amide group, etc.) , n is an integer of 1 to 3, YlZ and m are each represented by the general formula (
1), A represents a group of atoms (preferably carbon atoms or nitrogen atoms) forming a 5-membered ring (which may be substituted on the ring), and this ring is a group of atoms (preferably carbon atoms or nitrogen atoms) that form a 5-membered ring (for example, a benzene ring). ) may form a condensed ring. The infrared coupler of general formula (1) or (2) preferably has a molecule ff1 (molecular weight excluding Z) of 700 or less, more preferably 500 or less.

In addition, in order to increase the immobility in the photosensitive layer and the solubility in the coupler solvent, the infrared coupler of general formula (1) or (2) is used with a ballast group (preferably a ballast group with 8 or more carbon atoms). or a polymer residue), and the ballast group is preferably substituted by Z.

Z represents a hydrogen atom or a coupling-off group.

Z in general formulas (1) and (2) is preferably a coupling-off group, and examples of the coupling-off group include a halogen atom (for example, chlorine, bromine, iodine), a sulfo group, an alkoxy group, an aryloxy group, a thiocya LL acyloxy basis,
Examples thereof include an arylthio group, a nitrogen-containing heterocyclic residue, and a group represented by the following general formula (3) is preferred.

General formula (3) % Formula % R3 represents an optionally substituted alkyl group, alkenyl group, aralkyl group, aryl group, or hydrogen atom.

The infrared coupler may also be a copolymer of a coupler represented by general formula (2) and butyl acrylate.

Specific examples of infrared couplers are listed below.

(-2-) R-1 R-7 R-9 03H IR-11 1R-12 OOH IR-19 (Composition ratio duplex ratio 5:5) IR-17 0OH General formula (1) or ゛(2) Infrared couplers are synthesized by condensing 1-hydroxy-2-naphthoic acid phenyl esters with the corresponding amines (synonymous with aniline derivatives or aniline derivatives).

Further, in the present invention, a compound represented by the following general formula (A) can also be used as an infrared dye-providing substance.

General formula (A) (Y -L ¥-X In the formula, X represents an infrared dye residue whose wavelength λlaX is longer than 725 tv, and Y represents the difference in diffusivity of X before and after development as a function of development. Represents a group (so-called carrier) that has the property of causing formation, and L is a simple bond or 21iI
represents a linking group of Ii, and q represents 1 or 2.

Carrier= will be explained below.

As carriers, there are two types: one type that corresponds to the development of silver (positive function) and causes the dye to become diffusive (negative type), and the other type that responds inversely to the development of silver (negative function) and causes the dye to become diffusive (negative type). positive type).

Examples of negative type carriers include carriers having reducing properties that release diffusible dyes when oxidized, such as carriers represented by the following general formulas (4) to (8).

General formula (4) General formula (5) In each of general formulas (4) to (8), A1 represents a collection of atoms necessary to form a benzene ring or a naphthalene ring, and A2 forms a fused benzene ring. represents the collection of atoms necessary to

Further, each of the rings represented by A1 and A2 may have a substituent, and at least one of the substituents is a ballast group.

Zl and Z2 each represent a hydroxyl group, an amino group (including substituted amino groups), or a group that provides a hydroxyl group or an amino group (including substituted amino groups) through hydrolysis.

A specific example of the above carrier is JP-A No. 48-33821,
No. 51-113624, No. 57-179840, No. 58-116537, No. 59-60434, No. 59
-65839, 59-165055, 51-1
It is described in specifications such as No. 04343 and No. 59-124329.

When a compound having the above carrier is used as the dye-donating substance of the present invention, the dye-donating substance may also serve as a reducing agent.

Another negative-acting carrier includes coupler residues. The dye moiety is substituted at the active site of the coupler, and the coupler residue is substituted with at least one ballast group. Specific examples of this type of carrier are JP-A No. 57-122596, JP-A No. 57-186744, and JP-A No. 57-186744.
No. 59-159159, No. 59-174834, and No. 59-231540, each published in Mei 5IIIB.

Further examples of negative type carriers include couplers in which the active site of the coupler is substituted with a ballast group, and the dye moiety is substituted with a group other than the active site. A specific example of this type of carrier is the patent application No. 63-2.
No. 57998 Mei 1 [11].

A specific example of a positive type carrier is JP-A-51-63
618@, No. 53-69033, No. 54-13092
No. 7, No. 49-111628, No. 52-4819, No. 53-35533, No. 53-110827, No. 54-130927, No. 56-164342,
The method is described in US Pat. No. 4,783,396.

Next, the infrared dye residue represented by X will be explained.

As the infrared dye residue represented by X, λrAaX is 72
5nIB~1000nI11! ! Also on the plate +7)
IE) Hara squid, preferably the following general formula (9) ~
(12) are the residues of the dyes represented by each of the following.

General formula (9) In the formula, R1 and R2 each represent an optionally substituted alkyl group having 1 to 4 carbon atoms (e.g., methyl group, ethyl group, methoxyethyl group, etc.) or a hydrogen atom, and R3
is a halogen atom, an alkyl group, an alkoxy group, an alkylamino group, an aralkyl group, a cycloalkyl group, an aryloxy group, an amine group, a sulfonylamino group, an acylamino group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, a ureido group, It represents an alkylthio group, an arylthio group, a hydroxyl group, a cyano group, or a carboxyl group, and each group may be further substituted. Also, n
represents an integer from O to 3.

General formula (10) In the formula, R4 represents a substituent of an electron-withdrawing group (particularly preferably a cyano group or C0NHR5, provided that R5 is a hydrogen atom or an optionally substituted alkyl group or aryl group). R
3 and n each have the same meaning as defined in general formula (9).

A is represented by the following general formula.

It has the same meaning as defined, and represents a hydroxyl group or an optionally alkyl group. Also R7
and R8, R' and R3, or R8 and R3 may be bonded to each other to form a ring. ) General formula (11) In the formula, R3, R4, A and n have the same meanings as defined in general formulas (9) and (10), respectively.

General formula (12) (wherein R3 and n are each general formula (9), where A
has the same meaning as defined in general formula (10), and R9 and [IO are respectively an alkyl group, an aralkyl group,
Represents an aryl group, an alkyloxy group, an aryloxy group, or a hydrogen atom.

Further, R9 and R10 may be combined to form a ring (for example, a benzene ring), and each group may be substituted.

Specific examples of the compound represented by general formula (A) are shown below.

A-5 A-7 Δ-12 CHl The amount of addition of the infrared dye-providing substance of the present invention varies depending on the characteristics of the compound used and the characteristics of the photosensitive material, but the optimum amount is as follows:
The infrared dye density of the obtained image is 0.3 or more, more preferably 0.3 in terms of reflection density when measured using 850 ni light.
It is added so that it becomes 5 or more.

For example, in the case of a compound represented by the general formula (1) or (2), the usage port is preferably 0.000.
0.005 to 50 g, more preferably 0.1 g to 10 g. Moreover, two or more types of infrared dye-providing substances of the present invention may be used in combination.

The infrared dye-providing material is added to the light-sensitive silver halide addition layer, or to a layer adjacent thereto, preferably in the same layer as the cyan dye-providing material. Although the method of addition is arbitrary, for example, it may be added alone or together with a dye-providing substance by the same method as for the dye-providing substance described below.

The heat-developable color photosensitive material of the present invention contains a dye-providing substance.

As the dye-donating substance used in the present invention, for example, JP-A No. 6
2-44737, JP 62-129852, JP 62-169158, and non-diffusible dye forming couplers, such as U.S. Pat. No. 475,441.
4.2 or, for example, US Pat. No. 4.2.
Although an azo dye used in the heat-developable dye bleaching method described in No. 35.957 etc. can be used as the dye-donating substance, it is more preferable to use a diffusible dye-donating substance that forms or releases a diffusible dye. In particular, it is preferable to use a compound that forms a diffusible dye by a coupling reaction.

Diffusible dye-providing substances that can be used in the present invention will be explained below. The diffusible dye-donor substance may be one that participates in the reduction reaction of the photosensitive silver halide and/or the optional silver salt used and is capable of forming or releasing a diffusible dye as a function of the reaction. Depending on the reaction mode, a negative dye-donor that acts on a positive function (i.e., one that forms a negative dye image when negative-working silver halide is used) and a negative dye donor that acts on a negative function. They can be classified as working positive-working dye-donors (ie, those that form a positive dye image when using negative-working silver halide).

As a negative dye-donating substance, for example, U.S. Pat.
No. 63,079, No. 4,439,513, JP-A-59
-60434, 59-65839, 59-71
No. 046, No. 59-87450, No. 59-88730
Examples include reducible dye-releasing compounds described in specifications such as No. 59-123837, No. 59-124329, No. 59-165054, and No. 59-164055.

Other negative dye-providing substances include, for example, U.S. Pat.
．． No. 474.867, JP-A-59-12431, JP-A No. 59-12431, No. 5
No. 9-48765, No. 59-174834, No. 59-
No. 776642, No. 59-159159, No. 59-2
Examples include coupled dye-releasing compounds described in specifications such as No. 31040.

Another particularly preferred negative-tone dye-providing substance of the coupled dye-forming compound is one represented by the following general formula (a).

General formula (a) Cp-+J+-f-8) In the formula, Cp represents an organic group that can react with the oxidized form of the reducing agent (coupling reaction) to form a diffusible dye, and J represents the coupler. represents a divalent bonding group substituted at the active site, and 8 represents a ballast group.

Here, the ballast group is one that substantially prevents the dye-donating substance from diffusing during heat development processing, and M (such as a sulfo group) shows its effect depending on the nature of the molecule, and its effect depends on its size. Groups (such as groups with a large number of carbon atoms), etc. As the coupler residue represented by Cp, in order to improve the diffusibility of the dye formed, the molecule 1 is 700
It is preferably 500 or less, more preferably 500 or less.

The ballast group is preferably a group having 8 or more carbon atoms, more preferably 12 or more carbon atoms, or a sulfo group, a group containing both is even more preferable, and a group that is a polymer chain is even more preferable.

The coupling dye-forming compound having a group as a polymer chain is preferably one having a polymer chain having a repeating unit derived from a monomer represented by general formula (b) as the above group.

General formula (b) Cp −f J +−fY +v−+Z −)−(−1
), where CI) and J have the same meaning as defined in general formula (a), Y represents an alkylene group, arylene group or aralkylene group, 2 represents 0 or 1, and Z represents a divalent It represents an organic group, and L represents an ethylenically unsaturated group or a group having an ethylenically unsaturated group.

Specific examples of coupling dye-forming compounds represented by general formulas (A) and (0) include JP-A-59-1
No. 24339, No. 59-181345, No. 60-29
No. 50, JP-A No. 61-57943, JP-A No. 61-5933
No. 6, U.S. Pat. No. 4,631,251, U.S. Pat. No. 4,650.
No. 748, U.S. Pat. No. 4,656,124, etc., and in particular, U.S. Pat.
No. 4, U.S. Patent No. 4,631,251, U.S. Patent No. 4,650
．． The polymeric dye-providing substances described in each specification of No. 748 are preferred.

As a positive dye-donating substance, for example, JP-A-59-
Dye developer compounds described in publications such as No. 55430 and No. 59-165054, for example, JP-A-59-15444
Compounds that release diffusible dyes by intramolecular nucleophilic reaction described in publications such as No. 5 and No. 59-766954, cobalt complex compounds described in publications such as JP-A-59-116655, or e.g. There are compounds that lose their dye-releasing ability when oxidized and are described in publications such as No. 59-124327 and No. 59-152440.

The residue of the diffusible dye in the dye-providing substance used in the present invention preferably has a molecular weight of 800 or less, more preferably 600 or less, in order to improve the diffusibility of the dye. Examples include residues such as azomethine dyes, anthraquinone dyes, naphthoquinone dyes, styryl dyes, nitro dyes, quinoline dyes, carbonyl dyes, and phthalocyanine dyes. These dye residues may be in a temporarily shortened form that can restore color during thermal development or transfer. In addition, these dye residues are used for the purpose of improving the light resistance of images, for example, in JP-A-59-48765 and JP-A-59-48765.
A chelatable dye residue described in No. 124337 is also a preferred form.

These dye-providing substances may be used alone or in combination of two or more. The amount used is not limited and depends on the type of dye-providing substance, whether it is used alone or in combination, or whether the photographic constituent layer of the light-sensitive material of the present invention is a single layer or a multilayer of two or more types. The amount may be determined depending on the situation, but for example, it can be used in an amount of 0, oos to 50g, preferably 011g to iog per 1f.

The dye-providing substance used in the present invention can be incorporated into the photographic constituent layer of the heat-developable light-sensitive material by any method. ~ licresyl phosphate, etc.) and then subjected to ultrasonic dispersion, or dissolved in an alkaline aqueous solution (e.g., 10% sodium hydroxide aqueous solution, etc.), and then dissolved in Fi (e.g., citric acid or nitric acid, etc.). Use it by neutralizing it, or
or an aqueous solution of a suitable polymer (e.g. gelatin,
It can be used after being dispersed together with polyvinyl butyral, polyvinyl pyrrolidone, etc.) using a ball mill.

Next, the photosensitive silver halide used in the present invention will be described. Any silver halide can be used, and examples thereof include silver chloride, silver bromide, silver iodide, silver chlorobromide, silver chloroiodide, and silver iodobromide. The photosensitive silver halide can be prepared by any method commonly used in the photographic field, such as a single jet method. According to a preferred embodiment, a silver halide emulsion having shelled silver halide grains can be used.

Furthermore, it is possible to use an emulsion containing grains having a multilayer structure in which the halogen composition of the grains differs on the surface and inside. For example, a silver halide emulsion having core/shell type silver halide grains in which the halogen composition changes stepwise or continuously can be used.

In addition, its shape is cubic, spherical, octahedral, dodecahedron,
It can be used whether it has a clear crystal habit such as a tetradecahedron or not.

As this type of silver halide, JP-A No. 60-2159
There is one described in No. 48.

Also, for example, JP-A-58-111933, JP-A No. 58-1
No. 11934, No. 58-108526, Research Disclosure No. 22534, etc., each of which has two parallel crystal planes, and each of these crystal planes is larger than the other single crystal of this particle. It is also possible to use a silver halide emulsion containing tabular silver halide grains having a large area and an aspect ratio, that is, a ratio of grain diameter to thickness of 5:1 or more.

Further, in the present invention, a silver halide emulsion containing internal latent image type silver halide grains whose surfaces have not been fogged in advance can be used. For internal latent image type silver halide whose surface is not prefogged, for example, U.S. Pat.
．． 592.250, 3,206.313, 3.
317.322, 3,511,622, 3, 4
No. 47.927, No. 3,761,266, No. 3.70
No. 3.584, No. 3.73Ei, No. 140, etc., and as described in the above-mentioned No. 1111m, the sensitivity inside the grain is higher than the sensitivity on the surface of the silver halide grain. It is a silver halide grain with a high In addition, silver halide emulsions having silver halide grains containing each image metal ion described in U.S. Patent No. 3271.157, U.S. Patent No. 3,447,92γ, and U.S. Patent No. 3,531,291 , or U.S. Patent No. 3,761.276
Silver halide emulsions whose grain surfaces are weakly chemically sensitized containing dopants described in @, or those described in Japanese Patent Application Laid-open Nos. 50-8524 and 50-38525, etc. Silver halide emulsions consisting of grains having a laminated structure, and others JP-A-52-156614
and silver halide emulsions described in JP-A-55-127549.

The light-sensitive silver halide emulsion may be chemically sensitized by any method in the photographic art.

The silver halide in the above-mentioned photosensitive emulsion may be coarse or fine, but the preferred grain size is about 0.001 μm to about 1.5 μm, more preferably about 0.001 μm to about 1.5 μm, and more preferably about 0.001 μm to about 1.5 μm. It is .01μm to 0.5μm.

In the present invention, as another method for preparing a silver halide emulsion, a photosensitive silver salt-forming component is allowed to coexist with an organic silver salt described below,
Photosensitive silver halide can also be formed in a part of the organic silver salt.

These photosensitive silver halides and photosensitive silver salt-forming components can be used in combination in various ways, and the amount used is preferably o, ooig to 50 g per layer per 1f of support, and more preferably Preferably it is 0.1 to 10 g.

Typical spectral sensitizing dyes used in the present invention include, for example, cyanine, merocyanine, complex (that is, trinuclear or tetranuclear) cyanine, holobola-cyanine,
Examples include styryl, hemicyanine, oxonol, and the like.

The addition of these sensitizing dyes is from 1×10 −4 mol to 1 mol per mol of photosensitive silver halide or silver halide forming component.
It is 1 mole. More preferably, 1X10-4 to IX
10-' mole.

The sensitizing dye may be added at any stage of the preparation of the silver halide emulsion. That is, it may be carried out at any time, such as when silver halide grains are formed, when soluble salts are removed, before the start of chemical sensitization, during chemical sensitization, or after the end of chemical sensitization.

In the heat-developable color photosensitive material of the present invention, various organic silver salts can be used, if necessary, for the purpose of increasing sensitivity and improving developability.

Examples of organic silver salts that can be used in the heat-developable color photosensitive material of the present invention include JP-A-53-4921 and JP-A-49.
-52626, 52-141222, 53-3
6224@ and 53-37626, 52-14
No. 1222, No. 53-36224 and No. 53-31
Publications such as No. 610 and U.S. Patent No. 3.330.63
No. 3, No. 3,794,496, No. 4.105.4
Silver salts of long-chain aliphatic carboxylic acids and silver salts of carboxylic acids having heterocycles, such as silver laurate, silver myristate, silver palmitate, stearin, as described in the specifications of No. 51, etc. silver acid, silver arachidonic acid, silver behenate, silver α-(1-phenyltetrazolethio)acetate, etc.
Aromatic silver carboxylates, such as silver benzoate, silver phthalate, etc., Japanese Patent Publication No. 44-26582, No. 45-. 12700
No. 45-18416, No. 45-22185, JP-A-52-137321, JP-A-58-118638
No. 58-118639, U.S. Patent No. 4,123,
There are silver salts of imino groups described in various publications such as No. 274.

Other silver complex compounds with a stability constant of 4.5 to 10.0 as described in JP-A No. 52-31728, imizolithion as described in U.S. Pat. No. 4,168,980 Mei 1IIW. Silver salt etc. are used.

Among the above organic silver salts, imino group silver salts are preferred;
Particularly preferred are silver salts of benzotriazole derivatives, more preferably 5-methylbenzotriazole and its derivatives, sulfobenzotriazole and its derivatives, and N-alkylsulfamoylbenzotriazole and its derivatives.

The organic silver salts used in the present invention may be used alone or in combination of two or more. Alternatively, a silver salt may be prepared in a suitable binder and used as it is without isolation.
The isolated product may be used after being dispersed in a binder by an appropriate means. Dispersion means include, but are not limited to, ball mills, sand mills, colloid mills, and video mills.

In addition, as a method for preparing organic silver salts, a method is used for boat fishing by dissolving and mixing silver nitrate and raw material organic compounds in water or an organic solvent, but if necessary, a binder may be added or hydroxylated. Adding an alkali such as sodium to promote the dissolution of organic compounds, or adding ammoniacal nitric acid
It is also effective to use a solution.

The amount of the organic silver salt to be used is usually preferably 500 mol per mol of photosensitive silver halide, more preferably 0.1 to 100"E, more preferably 0.3 to 30"E. It is a mole.

As the reducing agent (in this specification, the reducing agent brecasa is also included in the reducing agent) used in the heat-developable color photosensitive material of the present invention, those commonly used in the field of heat-developable photosensitive materials can be used. can.

Examples of reducing agents that can be used in the present invention include U.S. Pat. Nos. 3,531,286 and 3,761,27.
No. 0, No. 3.764.328, and RD (
Research Disclosure) No. 12146,
Same No.

15108, No. 15127, and JP-A No. 15127
-27132 publication, U.S. Patent No. 3,342,599, U.S. Patent No. 3.719.492 specifications, JP-A-1983-1
p-phenylenediamine-based and p-aminophenol-based developing agents, phosphoramidophenol-based, sulfonamide aniline-based developing agents, and hydrazone-based color developing agents described in publications such as No. 35628 and No. 57-79035, and the like. precursors of, or phenols, sulfonamidophenols, or polyhydroxybenzenes, sodium chlorides, hydroxybisnaphthyls and methylene-snaphthols, methylenebisphenols, ascorbic acid, 3-pyrazolidones, pyrazolones. can be used.

As a particularly preferable reducing agent, JP-A-56-146133
N-(p-
N.

N-dialkyl) phenylsulfamate can be mentioned.

Two or more types of the above-mentioned reducing agents may be used simultaneously.

Use 1 of the reducing agent used in the heat-developable color photosensitive material of the present invention includes the type of photosensitive silver halide used,
Although it is not necessarily constant depending on the type of organic acid silver salt and the type of other additives, it is usually preferably 0.01 to 1500 mol per mol of photosensitive silver halide, and is preferably 01 to 200 moles.

Furthermore, binders that can be used in the thermal color photosensitive material of the present invention include polyvinyl butyral, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, cellulose acetate film 1-, polyvinyl alcohol, polyvinylpyrrolidone, gelatin, phthalated geladine, and the like. There are synthetic or natural polymeric substances such as gelatin derivatives, cellulose derivatives, proteins, starches, and gum arabic, and one or more of these can be used in combination. In particular, it is preferable to use gelatin or a derivative thereof together with a hydrophilic polymer such as polyvinylpyrrolidone or polyvinyl alcohol, and more preferably to use a mixed binder of gelatin and polyvinylpyrrolidone described in JP-A-59-229556. That's true.

The binder is preferably used in an amount of O.osg to 50 () per 1f of support, more preferably 0.1g.
~10g.

In addition, the binder is 041
~10 (J is preferably used, more preferably 0.
It is 25-4g.

The heat-developable color photosensitive material of the present invention can be obtained by forming a photographic constituent layer on a support, and examples of the support that can be used here include polyethylene film, cellulose acetate film, polyethylene terephthalate film, Synthetic plastic films such as polyvinyl chloride, paper supports such as photographic base paper, printing paper, baryta paper, and resin coated paper, and electron beam curable resin compositions coated and cured on these supports. Examples include supports.

It is preferable that various heat solvents be added to the heat-developable color photosensitive material of the present invention and/or the image receiving member used in the present invention. A thermal solvent is a compound that promotes thermal development and/or thermal transfer.

These compounds include, for example, U.S. Patent No. 3,347
, No. 675, No. 3,667.959, (RD Research Disclosure) No. 17643 (X
II), JP-A-59-229556, 59-6
No. 8730, No. 59-842364, No. 60-1912
No. 51, No. 60-232547, No. 60-14241
No. 61-52643, JP-A-62-785
No. 55, No. 60-181965, No. 60-18463
No. 7, etc., U.S. Patent No. 3.438776, U.S. Patent No. 3,666
．． 477, 3.667, 959 specifications, JP-A-51-19525, JP-A-53-24829, JP-A-53-
No. 60223, No. 58-118640, No. 58-19
Specific compounds having polarity such as those described in the 8038 specification can be mentioned, and those particularly useful in carrying out the present invention include, for example, urea derivatives (for example, dimethylurea, diethylurea, phenylurea, etc.) , amide derivatives (e.g., acetamide, benzamide, p-toluamide, p-butoxybenzamide, etc.), sulfonamide derivatives (e.g., benzenesulfonamide, α-toluenesulfonamide, etc.), polyvalent alconyls (e.g.,
1.5-bentanediol, 1.6-hexanediol, 1°2-cyclohexanediol, pentaerythritol, trimethylolethane, etc.), or polyethylene glycols.

As the above-mentioned thermal solvent, a water-insoluble solid thermal solvent is more preferably used. Here, the water-insoluble solid thermal solvent is solid at room temperature, but at high temperature (60°C or higher, preferably 10G
'C or higher, particularly preferably 130°C or higher and 250°C or lower)
It is a compound that becomes liquid, and the ratio of organicity to organicity ("Organic Conceptual Diagram", Yoshio Koda, Sankyo Publishing, 1984) is 0.
It refers to a compound in the range of 5 to 3.0, preferably 0.7 to 2.5, particularly preferably 1.0 to 2.0.

Specific examples of the above-mentioned water-soluble heat solvent include, for example,
-278331 and Go-280824.

Examples of the layer to which a heat solvent is added include a photosensitive silver halide emulsion layer, an intermediate layer, a Wi-retention layer, an image receiving layer of an image receiving member, etc., and it is added and used to obtain an effect depending on each layer. .

The preferred addition amount of the heat solvent is usually 10% to 500% by weight of the binder, more preferably 30% to 200% by weight.
It is Shigetsu%.

The organic silver salt and the thermal solvent may be dispersed in the same dispersion. The same binder, dispersion medium, and dispersion device as used for making each dispersion can be used.

The heat-developable color photosensitive material of the present invention may contain various additives in addition to the above-mentioned components, if necessary.

A color toning agent known in heat-developable light-sensitive materials may be added as a development accelerator to the heat-developable color light-sensitive material of the present invention. As a color toning agent, for example, JP-A-46
-4928, 46-6077, 49-5019
No. 49-5020, No. 49-95215, No. 4
No. 9-107727, No. 50-2524, No. 50-6
No. 7132, No. 50-67641, No. 50-1142
No. 17, No. 52-33722, No. 52-99813, No. 53-1020, No. 53-55115, No. 53
-76020, 53-125014, 54-1
No. 56523, No. 54-156524, No. 54-15
No. 6525, No. 54-156526, No. 55-406
Publications such as No. 0, No. 55-4061, No. 55-32015, and West German Patent No. 2.140.406, No. 2
, 141, 063, 2,220,618, U.S. Patent No. 3,847,612, 3,782,941
No. 4,201,582, etc., as well as Japanese Patent Application Laid-open Nos. 57-207244, 57-207245, 58-1896328, 58-193541, etc. There are compounds that have

Other development accelerators include compounds described in JP-A-59-177550 and JP-A-59-111636.

Further, development accelerator releasing compounds described in JP-A-61-159642 can also be used.

As the antifoggant, the following can be used. For example, the higher fatty acids described in U.S. Patent No. 3,645,739 Meikei Weight,
Mercury salts described in Japanese Patent Publication No. 51-47419, N-halogen compounds described in JP-A-51-47419, U.S. Patent No. 3700
．． Mercapto compound releasing compound described in JP-A-51-50725, No. 49-1250
Aryl sulfonic acid described in Publication No. 16, 51-47
Carboxylic acid lithium salt described in Publication No. 419, British Patent No. 1.455.271, JP-A-1010-1987
Oxidizing agents described in Publication No. 19@, Sulfinic acids or thiosulfonic acids described in Publication No. 53-19825, 2-thiouracils described in Publication No. 51-3223, No. 51
- Simple sulfur described in No. 26019, No. 51-4252
Disulfide and polysulfide compounds described in No. 9, No. 51-81124, and No. 55-93149,
rosin or diterpenes described in No. 51-57435, polymer acids having free carboxyl groups or sulfonic acid groups described in No. 51-104338,
Thiazolinthione as described in U.S. Pat. Mercapto-1,2,4-1~
Riazole, thiosulfinic acid esters described in JP-A-55-140883, 1.2.3.4-thiatriazoles described in JP-A-55-142331, JP-A-55-140883;
-46641, 59-57233, 59-57
Dihalogen compounds or trihalogen compounds described in Publication No. 234, thiol compounds described in Publication No. 59-111636, hydroquinone derivatives described in Publication No. 60-198540, and hydroquinone derivatives described in Publication No. 60-227255. For example, in combination with benzotriazole derivatives.

Other particularly preferable anti-capri agents that can be used in combination include the hydrophilic group-containing inhibitors described in JP-A-62-78554, the polymer inhibitors described in JP-A-62-121452, and Examples include the inhibitor having a pallast group described in JP-A No. 62-123456.

Furthermore, inorganic or organic bases or base precursors can be added. Examples of base precursors include compounds that decarbonize upon heating and release basic substances (e.g. guanidinium trichloroacetate), compounds that decompose through reactions such as intramolecular nucleus displacement reactions and release amines, etc. For example, Japanese Patent Application Publication No. 56-130745, Japanese Patent Application Publication No. 56-132332, British Patent No. 2.079.
No. 480, U.S. Patent No. 4. o60.420 specification, JP-A-59-157637, JP-A-59-166943,
Examples include base releasing agents described in Japanese Publications No. 59-180537, No. 59-174830, No. 59-195237, and the like.

In addition, various additives used in the heat-developable photosensitive layer as necessary, such as antihalation dyes, optical brighteners, hardeners, antistatic agents, plasticizers, spreading agents, matting agents, and surfactants. , anti-fading agents, etc., specifically RD (
Research Disclosure) magazine vol.1.170.1
June 978 No. 0.17029, JP-A-62-13
It is described in No. 5825, etc.

The heat-developable color photosensitive material of the present invention contains (a > photosensitive silver halide, (b) a reducing agent, and (C) a dye-providing substance. Furthermore, if necessary, (d) a binder, and (e)
) It is preferable to contain organic silver. Basically, these may be contained in one heat-developable photosensitive layer, but they do not necessarily need to be contained in a single photographic constituent layer. For example, if the heat-developable photosensitive layer is divided into two layers, a ), (b
), (d), and (e) may be contained in one heat-developable photosensitive layer, and the other layer adjacent to this photosensitive layer may contain the dye-providing substance (C). It may be contained in two or more constituent layers as long as it is in a state where it can react.

Further, the heat-developable photosensitive layer may be divided into two or more layers: a low-sensitivity layer and a high-sensitivity layer, a high-density layer and a low-density layer, or more.

The heat-developable color photosensitive material of the present invention has one or more heat-developable photosensitive layers. In the case of a full-color photosensitive material, it is generally provided with three heat-developable photosensitive layers having different color sensitivities, and in each photosensitive layer, dyes having different hues are formed or released by heat development.

Typically, a yellow dye is used in the blue-sensitive layer, a magenta dye is used in the green-sensitive layer, and a cyan dye is used in the red-sensitive layer, but the invention is not limited to this. It is also possible to combine a near-infrared sensitive layer.

The structure of each layer can be arbitrarily selected depending on the purpose. For example, a structure in which a red-sensitive layer, a green-sensitive layer, and a blue-sensitive layer are sequentially formed on a support, or a blue-sensitive layer is sequentially formed on a support. , a green-sensitive layer, a red-sensitive layer, or a green-sensitive layer, a red-sensitive layer, and a blue-sensitive layer sequentially on the support.

In addition to the heat-developable photosensitive layer, the heat-developable color photosensitive material of the present invention includes an undercoat layer, an intermediate layer, a protective layer, a filter layer,
Non-photosensitive layers such as backing layers and release layers can be provided. To coat the heat-developable photosensitive layer and these non-photosensitive layers on the support, a method similar to that used for coating and preparing general silver halide photosensitive materials can be applied.

The heat-developable color light-sensitive material of the present invention is imagewise exposed to light, usually preferably from 80°C to 200°C, more preferably from 100°C to 100°C.
at a temperature range of 70°C, preferably for 1 second to 180 seconds,
More preferably, the image can be developed by simply heating for 1.5 seconds to 120 seconds. Transfer of the diffusible dye to the receiver and layer may be carried out simultaneously with heat development by bringing the image receiving member into close contact with the photosensitive surface of the photosensitive material and the image receiving layer during heat development, or by bringing the image receiving member into close contact with the image receiving member after heat development. Alternatively, the transfer may be carried out by contacting the coating with water and heating if necessary. Moreover, you may perform preheating in the temperature range of 70 degreeC - 180 degreeC before exposure. Also, JP-A-60-1433
As described in No. 38 and Japanese Patent Application No. 60-3644, the photosensitive material and image receiving member are preheated at a temperature of 80°C to 250°C immediately before thermal development transfer in order to improve mutual adhesion. You may.

Various heating means can be used for the heat-developable color photosensitive material of the present invention.

As the heating means, any method that can be applied to ordinary heat-developable photosensitive materials can be used, such as contacting with a heated block or plate, contacting with a heated roller or drum, or passing through a high-temperature atmosphere. Alternatively, frequency heating may be used, or furthermore, a conductive layer containing a conductive substance such as carbon black may be provided on the back surface of the photosensitive material of the present invention or the back surface of the image receiving member for thermal transfer, and the Joule heat generated by energization may be utilized. You can also. There are no particular restrictions on the heating pattern, including methods of preheating and then reheating, heating at a high temperature for a short time, or at a low temperature for a long time, continuously rising, continuously falling, or repeating these methods. Although discontinuous heating is also possible, a simple pattern is preferred. Alternatively, a method in which exposure and heating proceed simultaneously may be used.

The image-receiving layer of the image-receiving member that can be effectively used in the present invention may be any layer that has the function of receiving the dye in the heat-developable photosensitive layer released or formed by heat development. Polymers containing amines or quaternary ammonium salts as described in US Pat. No. 3,709,690 are preferably used. Typical image-receiving layers for diffusion transfer include ammonium salts, 3
It can be obtained by mixing a polymer containing a class amine, etc. with gelatin, polyvinyl alcohol, etc., and coating the mixture on a support. Another useful dye-receiving material is JP-A-57-
The glass transition temperature described in 207250 etc. is 4
Examples include those formed of heat-resistant organic polymeric substances having a temperature of 0° C. or more and 250° C. or less.

These polymers may be supported on a support as an image-receiving layer, or may themselves be used as a support.

Examples of the heat-resistant polymer substances include polystyrene, polystyrene derivatives having a substituent having 4 or less carbon atoms, polyacetals such as polyvinylcyclohexane, polydivinylbenzene, polyvinylbi-Olidone, polyvinylcarbazole alcohol, polyvinyl formal, and polyvinyl butyral. class, polyvinyl chloride,
Chlorinated polyethylene, polytrichloride fluoroethylene, polyacrylonitrile, poly-N.

N-dimethylallylamide, polyacrylate with p-cyanophenyl group, pentachlorophenyl group and 2,4-dichlorophenyl group, polyacrylic acrylate, polymethyl methacrylate, polyethyl methacrylate, polypropyl methacrylate, polyisopropyl methacrylate, poly Isobutyl methacrylate, poly tert-butyl methacrylate, polycyclohexyl methacrylate, polyethylene glycol dimethacrylate, poly-2-cyano-ethyl methacrylate,
Examples include polyesters such as polyethylene terephthalate, polycarbonates such as polysulfone and bisphenol A polycarbonate, polyanhydrides, polyamides, and cellulose acetates. Also,[
``Polymer Handbook, Second Edition'' (Joy Brandrup, E.H. Inmargat tlA) John Willian and Sands Publishing (Pol.
ymerHandbook 2nd ed, (J,
Brandrup, E., H.

(mmergut MA) John W 1le
Also useful are synthetic polymers with a glass transition temperature of 40° C. or higher, as described in J&S OnS). -For boat fishing, the molecular weight of the polymer substance is 2,000 to 200,000.
is useful. These polymeric substances may be used alone or in a blend of two or more types, or may be used in combination of two or more types as a copolymer.

As a particularly preferable 1 m receiver, Japanese Patent Application Laid-open No. 59-22342
Examples include a layer made of polyvinyl chloride described in Japanese Patent Application No. 5, and a layer made of polycarbonate and a plasticizer described in JP-A-60-19138.

These polymers can also be used as a support and an image-receiving layer (image-receiving member), in which case the support may be formed from a single layer or from multiple layers. good.

As the support for the image-receiving member, any material such as a transparent support or an opaque support may be used, and examples thereof include films such as polyethylene terephthalate, polycarbonate, polystyrene, polyvinyl chloride, polyethylene, and boli-O-pyrene;
and supports containing pigments such as titanium oxide, barium sulfate, calcium carbonate, talc, etc., baryta paper, RC paper in which thermoplastic resin containing pigments is laminated on paper, cloth, Supports made of glass, metals such as aluminum, etc., and supports made by coating and curing electron beam curable resin compositions containing pigments on these supports, and coatings containing pigments on these supports. Examples include a support provided with a layer. Furthermore, cast coated paper described in Japanese Patent Application No. 126972/1984 is also useful as a support.

In addition, a support is prepared by coating and curing an electron beam curable resin composition containing a pigment on paper, or a support having a pigment coating layer on paper and an electron beam curable resin composition on the pigment coating layer. The resin layer of the support coated and cured can be used as an image-receiving layer, so it can be used as is as an image-receiving member.

The heat-developable color photosensitive material of the present invention is published in RD (Research Disclosure Magazine) No. 15108, JP-A-57-
No. 198458, No. 57-207250, No. 61-8
It can be a so-called monosheet type photothermographic material in which a photosensitive layer and an image-receiving layer are formed on the same support, as described in Japanese Patent No. 0148.

It is preferable that the heat-developable color photosensitive material of the present invention is provided with a protective layer, in which the compound of the present invention is contained.

Various additives used in the photographic field can be used in the protective layer. The additives include various pine agents 1 to 1,
Colloidal silica, slipping agents, organic fluoro compounds (especially fluorosurfactants), antistatic agents, ultraviolet absorbers, high-boiling organic solvents, antioxidants, hydroquinone derivatives, polymer latex, surfactants (polymer surfactants) hardeners (including polymer hardeners), hardeners (including polymer hardeners), organic silver salt particles, non-photosensitive silver halide particles, and the like.

Regarding these additives, please refer to RD (Research Disclosure) Vol. 170, June 1978.
', l No. 0.17029, JP-A-62-135825
listed in the number.

[Example] Hereinafter, specific examples of the present invention will be described. However, as a matter of course, the present invention is not limited to the examples described below.

Example 1 In this example, a silver iodobromide emulsion, a dispersion of an organic silver salt and a heat solvent, a dye-providing substance dispersion, and a reducing agent dispersion were prepared as follows, and these were used to heat the A developable color photosensitive material was prepared. Further, an image receiving member was prepared as described below.

■ Preparation of silver iodobromide emulsion At 50°C, JP-A-57-92523;
Ossein gelatin 20! +-1 distilled water 1000. Add 11% potassium iodide to solution (A) in which β and ammonia are dissolved. s
Liquid (B) 500-, which is an aqueous solution containing g and 131 g of potassium bromide, and Liquid (C) 5oo11, which is an aqueous solution containing 1 mol of silver nitrate and ammonia, were simultaneously D
Ag was added while keeping it constant.

The shape and size of the emulsion grains to be prepared depend on the pH.

It was adjusted by controlling pAg and the addition rate of solutions (B) and (C). In this way, silver iodide content of 7 mol%
A core emulsion having a regular octahedral shape and an average grain size of 0.25 μm was prepared.

Next, a core/shell type silver halide emulsion with a regular octahedron and an average grain size of 0.3 μm was prepared by coating a shell of silver halide containing 1 mol% of silver iodide in the same manner as above. (monodispersity was 9%). In this way I
The emulsion prepared in I was washed with water and desalted.

■M-made photosensitive silver halide dispersion The following ingredients were added to the silver iodobromide emulsion 7001Q prepared as described above, and chemical sensitization and spectral sensitization were performed, resulting in red sensitivity, green sensitivity, and blue sensitivity. Each photosensitive silver halide emulsion dispersion was prepared.

(a) Preparation of red-sensitive silver iodobromide emulsion The above silver iodobromide emulsion 7001f14-
Human Oxy-6-methyl-1゜3.3a,7-chitrazaindene 0.4g Gelatin 32 (J Sothium thiosulfate 10111 (J below sensitizing dye <a) 1% methanol solution Distilled water sensitizing dye <a> go, g 200d ゝ-22shi (b) Preparation of green-sensitive silver iodobromide emulsion The above silver iodobromide emulsion 700mj/4-
Hydroxy-6-methyl-1゜3.3a, 7-chitrazaindene 0.4g Gelatin 32 Q Sodium thiosulfate 110l11 The following sensitizing dye (
b) 1% methanol solution Distilled water sensitizing dye (b) 0 ml 1200 v (1 (C) Preparation of blue-sensitive silver iodobromide emulsion The above silver iodobromide emulsion 4-hydroxy-6-methyl-1°3.38 .7-Chitrazaindengelatin Sodium thiosulfate 001j2 0.4g 0mg Sensitizing dye (C1) below 1% methanol solution Distilled water Sensitizing dye (C) 01g 200nQ ■ Dispersion of organic silver and hot solvent Based on the following formulation , a dispersion of organic silver salt and hot solvent was prepared.

Formula 5-Methylbenztriazole silver 60.5 gp-
Tolylamide 346g polyvinylvinylene (10%) 4461Q in water
The weight shall be 2000 g.

After dispersing in an alumina ball mill, l)H was adjusted to 5.5 with a 10% aqueous citric acid solution to prepare a dispersion of an organic silver salt and a hot solvent.

■-(1) Preparation of dye-providing substance dispersion-1 The following polymeric dye-providing substance (1) 35.5! +, the following hydroquinone compound 5. Dissolve Og in 200 tffi of ethyl acetate and add 1 part of Alkanol XC (manufactured by DuPont) 5% aqueous solution.
241β, phenylcarbamoylated gelatin (Russlow Co., type 17819P C) 30.5!11 was mixed with 720iR of gelatin aqueous solution containing 30.5!11, dispersed with an ultrasonic homogenizer, and after distilling off ethyl acetate, the pH was adjusted to 7951g in s. , Dye-providing substance dispersion-1 was obtained.

Polymer dye-providing substance (1) ■-(2) Dye-donor dispersion-2 Proceed in the same manner as dye-donor dispersion-1 except that the dye-donor was changed to the following polymer dye-donor (2). Thus, dye-providing substance dispersion-2 was obtained.

Polymer dye-donor substance (2) ■-(3) Dye-donor dispersion liquid-3 This is the above-mentioned dye-donor substance dispersion liquid-1 except that the dye-donor substance is changed to the following polymer dye-donor substance (3). , obtained in the same manner.

Polymer dye-donor substance (3) Hydroquinone compound ■ Preparation of reducing agent solution Reducing agent 23.3 below (1, poly(N-vinylpyrrolidone) 14.6 g, fluorine-based surfactant below 0.50 g
was dissolved in water to give p)-45,5 to obtain a reducing agent solution of 250 vI2.

Reducing agent photosensitive materials (2) to (6) (additional compounds and ingredients are as shown in Table 1) were prepared.

Below, ゛Margin 1 Surfactant N a O = S CHCOOCH2 (CF 20
F2)III HCH2C00CH2(CF2C
F 2 ) n H (m, n = 2 or 3) ■ Preparation of heat-developable color photosensitive material The above-prepared dispersion of organic silver salt and thermal solvent, silver halide emulsion, dye-providing substance dispersion, and reducing agent solution were combined. Use,
A color photosensitive material (1) having a Nagai structure as shown in Table 1 was prepared.

(1) Creation of image-receiving member in the same manner as in photosensitive material (1) except that the infrared coupler of the present invention was added to the sixth layer of the photosensitive material. The following compounds (A) and (B) are added to the tetrahydrofuran solution.
Melt this and add it to a solution where the amount of polyvinyl chloride applied is 15.00/
An image-receiving member was prepared by coating and drying it on photographic baryta paper so that the color was 1'.

The heat-developable color photosensitive materials (1) to (6) were exposed to 800 cms of blue light, green light, red light, and white light through a step wedge, and then combined with each image-receiving member and placed in a heat developing machine (Deibero tube). -Module 277.3
Thermal development was performed at 145° C. for 90 seconds at M Company. The photosensitive material and the image receiving element are quickly peeled off, and the reflection density of each image of yellow (Y), magenta (M), cyan (C>) and the reflection density against infrared light (850 rv) of the obtained image receiving member are measured using a densitometer ( Each measurement was performed using PDA-65 (manufactured by Konica@).

Maximum concentration obtained ([)wax), m small temperature (Dm
in) Compound (A) Compound (B) HOCH2CH2SCHICH2SCH2CH, OH amount 600 mg/a+" Hereinafter, -i Infrared images are observed in blue light and white light exposed areas, but in Table 2, white exposed areas This is the reflection density measured using infrared light at the highest density part of the image f!& (black) in .

As can be seen from the results in Table 2, in the heat-developable color photosensitive material of the present invention, character information, signal information, and color image information could be read with light having a wavelength longer than 750 ni.

Example-2 A photosensitive material (7) having a multilayer structure shown in Table 3 was produced.

After exposing the obtained photosensitive material (7) to green light, red light and infrared light through a step wedge,
Water was applied to the emulsion surface of the photosensitive material using a wire bar, and image receiving member 2 described below was layered on top of the photosensitive material, followed by thermal development at 130° C. for 30 seconds.

Transfer images of cyan, magenta and yellow were obtained on the image receiving paper corresponding to each exposure.

When the reflection density of the obtained cyan image against infrared light (850 nm) was measured, D 1 lax was 1.48.1.
) min was 0.31.

Preparation of image-receiving member-2 Lime-treated gelatin (amount 2.3
J/v') layer was coated, and further a dyed layer having the composition shown below was coated to obtain image receiving member-2.

Composition of the dyed layer: Polymer (■) below: 4.25 g/lf Polymer (II) below: 1.4 (1
/i' Lime-processed gelatin 3Q/f Polymer (1) 2, The same infrared dye image as in the case of photosensitive material (7) was obtained with the photosensitive materials prepared in place of A-3 or A-4.
No image was detected in the photosensitive material excluding the infrared dye-providing substance of the present invention when measured using infrared light.

Polymer(n) Donor substance-(6): Book 1) Heat solvent-B: Benzene sulfonamide Book 2) Dye-donor substance-(4): Book 3) Inhibitor-B: Powder 4) Dye-donor substance-(5) Niemily Example -3 Personal information, character information, color image information, etc. are transferred from the photosensitive layer side of the photosensitive material-5 of Example-1 to blue (He-Cd) and green (
Exposure was performed using a red (He-Ne) (D) multi-gas laser.

In this case, the exposure was performed by switching the left and right sides of the screen so that the final image obtained was a mirror image when viewed from the photosensitive layer side. The exposed light-sensitive material was then processed by the method described in Example 1 to form a dye image.

Next, as shown in FIG. 2, ten booklets each having a hot melt layer (8) were stacked on top of each other and pressed at about 120° C. for 10 seconds. As a result, it has a clear image of the type shown in FIG.
An ID booklet having the following information was obtained.

[Effects of the Invention] As described in detail above, the present invention provides a heat-developable color photosensitive material that can record high-quality color image quality, character information, signal information, etc., and that can be processed easily and quickly. I was able to do that.

Furthermore, it was possible to provide a heat-developable color photosensitive material that can record character information, signal information, etc. that can be read with light with a wavelength longer than 750 nm at the same time as forming a color image.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an ID booklet using the ID card of the present invention, and FIG. 2 is a sectional view of the booklet portion of the ID booklet and the ID card portion after image formation and before lamination. In the figure, reference numeral 1 is an ID booklet, 2 is a booklet portion, 3 is an ID card portion, 6 is an image recording layer, 7 is a plastic film, and 8 is a hot melt leopard.

Claims (1)

[Claims] In a heat-developable color photosensitive material having at least a photosensitive silver halide, a reducing agent, and a dye-providing substance on a support, at least one of the dye-providing substances has a wavelength of 400 nm to 700 nm.
1. A heat-developable color photosensitive material, further comprising a compound that forms or releases a dye having an absorption maximum at wavelengths longer than 725 nm.