JPH06332135A - Heat-developable color photosensitive material and manufacture thereof - Google Patents

Abstract

PURPOSE:To enhance maximum density and to reduce stains and to enhance secular stability before processing by incorporating a specified dye trapping agent in a layer upper than a layer containing a specified dye donor and other than a layer containing an electron transfer layer. CONSTITUTION:The dye trapping agent represented by formula II is contained in the layer upper than the layer containing the dye donor represented by formula I and other than the layer containing the electron transfer layer. In formula I and II, EAG is a group receiving an electron from a reducing substance; D<2> is-CO-or the like; D<1> is a heterocyclic group containing N, O, or D<2>; G is a group bonding for D<1> with X is formula I; Dye is a diffusive dye group; X in formula I is a heterocyclic ring including an aromatic ring; L is bonding group; (m) is an integer of >=1 and (n) is an integer of >=2; X in formula II is a repeating monomer unit having a quaternary ammonium group; Y is a repeating monomer unit having no quaternary ammonium group; Z is a counter anion for X; (k) is 2-100mol%; and (p) is 0-98mol%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photothermographic material, which has a high maximum density and a low stain.
The present invention also relates to a heat-developable color light-sensitive material having excellent stability over time before processing.

[0002]

2. Description of the Related Art Photothermographic materials are well known in the art, and the photothermographic materials and their processes are described, for example, in "Basics of Photographic Engineering", Non-silver photography (ed. Page, US Patent No. 450062
No. 6, etc.

In addition, for example, a method of forming a dye image by a coupling reaction between an oxidized product of a developing agent and a coupler is described in US Pat. Nos. 3,761,270 and 4,021,240. Further, a method of forming a positive color image by a photosensitive silver dye bleaching method is described in US Pat. No. 4,235,957.

Many methods have been proposed for obtaining a positive color image by heat development. For example, in U.S. Pat. No. 4,559,290, a so-called DRR compound, which is an oxidized compound having no color image releasing ability, is allowed to coexist with a reducing agent or a precursor thereof, and the reducing agent is added according to the exposure amount of silver halide by heat development. A method has been proposed in which the diffusible dye is released by being oxidized and reduced by the reducing agent remaining without being oxidized. Also, US Pat. No. 4,783,396, Open Technical Report 8
7-6199 (Vol. 12, No. 22) is a compound that releases a diffusible dye by a similar mechanism and diffuses by reductive cleavage of an N—X bond (X represents an oxygen atom, a nitrogen atom or a sulfur atom). A heat-developable color light-sensitive material using a compound that releases a functional dye is described. When such a dye-donating compound that releases a diffusible dye in a positive manner is used, it may be used as a reducing agent in order to improve the discrimination between the image area and the non-image area and to accelerate the developing speed. It is known to use a diffusible reducing agent and, in addition to this, an electron transfer agent. For example, US Pat.
3396 also discloses many specific examples of reducing agents (electron donors) and electron transfer agents used for this purpose.

[0005]

The photothermographic material is, in addition to a silver halide emulsion and a dye-donating substance, a diffusion-resistant reducing agent, an electron transfer agent, a base generator, etc. instead of supplying a processing chemical from the outside. Must be built into the photosensitive material. Therefore, in order to obtain a simple layer structure, many compounds must be mixed in the same layer, so that there is a drawback that stability of the photosensitive material with time before processing is impaired (in particular, stain increases during the time). It was Japanese Patent Application No. 3-1155
No. 86 has the general formula (II) for the purpose of keeping stain low.
There has been proposed a technique in which a compound represented by the formula (1) is added to an intermediate layer to trap a diffusible dye slightly released in a white background portion of an image. It is effective to add this dye trapping agent to the layer above the layer containing the dye-donating compound (on the side close to the image receiving material that is overlaid with the light-sensitive material during heat development / dye transfer) to enhance the trapping efficiency. But Cyan,
In order to trap the magenta and yellow stain forming components in a well-balanced manner, it is necessary to distribute the components to the intermediate layer in an optimum ratio. On the other hand, it is general that an electron transfer agent is also added to the intermediate layer in order to prevent a reaction with the diffusion resistant reducing agent over time. However, it has been found that coexistence of the dye trapping agent and the electron transfer agent in the same layer causes a problem that the aging stability of the photosensitive material before processing is deteriorated.

Further, even if various additives are optimally distributed to each layer, there is a problem in that they diffuse and move in the process of drying after coating and the intended stability over time cannot be obtained.

(Object of the Invention) An object of the present invention is to obtain a heat-developable color light-sensitive material having a high maximum density, an image with little stain, and good stability over time before processing.

[0008]

The object of the present invention has been achieved by the following constitutions (1) and (2). (1) At least a photosensitive silver halide on a support,
A heat-developable color photosensitive material comprising a diffusion resistant reducing agent, an electron transfer agent, a dye-donating compound represented by the following general formula (I) and a dye trapping agent represented by the following general formula (II). In the heat development, the dye trapping agent is contained in a layer which is an upper layer than the layer containing the dye donating compound and which is different from the layer containing the electron transfer agent. Color photosensitive material. (2) When the heat-developable color photosensitive material is applied and dried, at least until 40% of the total water content is dried.
A method for producing a heat-developable color photosensitive material, characterized in that the film surface temperature is maintained at 17 ° C. or lower.

[0009]

[Chemical 4]

In the formula, EAG represents a group that receives an electron from a reducing substance (diffusion-resistant reducing agent). N and O represent a nitrogen atom and an oxygen atom, respectively, and this single bond is cleaved after EAG receives an electron. D ² represents —CO— or —SO ₂ —, D ¹ forms a heterocycle containing N, O and D ² , and D ¹ − is formed after cleavage of the N—O bond.
It represents an atomic group having the property of breaking the G bond. G is D
A linking group connecting ¹ and X, which represents a group having the property of being cleaved by a D ¹ -G bond after cleavage of the N—O bond,
G may itself have the ability to be further decomposed.

Dye represents a diffusible dye group, and X represents a benzene ring, a naphthalene ring, a 5- to 8-membered heterocycle containing 1 or 2 nitrogen atoms, or a chain or cyclic alkyl group having 2 to 10 carbon atoms. Represents a group, which may have a substituent, may be condensed with another saturated or unsaturated ring, and a part of the constituent carbon atoms may be replaced by an oxygen atom or a sulfur atom. It may be.

L represents a linking group. m is 1 or more, n is 2
Representing the above natural number, n L- (Dye) _m may be the same or different, and when m is 2 or more, m Dye may be the same or different.

[0013]

[Chemical 5]

In the formula, [X] represents a repeating unit of a monomer having a quaternary ammonium group. [Y] represents a repeating unit of a monomer having no quaternary ammonium group. [Z] is a counter anion of [X] and is represented by the following general formula (III). k is 2 to 100 mol% and p is 0 to 98 mol%.

[0015]

[Chemical 6]

In the formula, R represents a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group. J represents a divalent linking group, and D ⁻ represents an anionic dissociative group. m is 0
Or represents 1.

In the present invention, the dye trapping agent represented by the general formula (II) is added to the layer above the layer containing the dye donating compound represented by the general formula (I). Here, the upper layer means a layer located closer to the image receiving material (superposed upon heat development / transfer) than the layer containing the dye-donor compound represented by the general formula (I). The layer containing the dye trapping agent is a layer different from the layer containing the electron transfer agent.

The compound of formula (I) will be described in more detail. D ¹ is N, O, The heterocyclic ring formed together with D ² include heterocyclic rings having a monocyclic or condensed 4-8 membered, preferably below the ring.

[0019]

[Chemical 7]

These heterocycles may have a substituent such as an alkyl group or an aryl group. Among these heterocycles, the heterocycles represented by (i) and (j) are particularly preferred.

In the general formula (I), EAG is an electron-accepting group, preferably an aromatic group having a quinone residue or a Hammett substituent having a σ _p value of +0.09 or more,
It represents a heterocyclic group, an alkenyl group or an alkynyl group.
More specifically, the group described as EAG in U.S. Pat. No. 4,783,396 (JP-A-62-215270) can be mentioned. Particularly preferred is a phenyl group in which the nitro group is substituted in the ortho or para position.

In order to keep the compound of the general formula (I) non-diffusible in the addition layer of the heat-developable color light-sensitive material, a group called a ballast group is preferably substituted. The ballast group is usually an aliphatic group having 8 or more carbon atoms or an aromatic group, and is a heterocycle or EA formed by N, O, D ¹ and D ^2.
Replaced by G. Preferred are sulfamoyl group (alkyl or arylaminosulfonyl group), carbamoyl group (alkyl or arylaminocarbonyl group), acylamino group, alkylsulfonyl group, arylsulfonyl group, alkyl group, alkylthio group and the like.

Examples of Dye of the general formula (I) include azo dyes, azomethine dyes, azopyrazolone dyes, indoaniline dyes, indophenol dyes, anthraquinone dyes, triarylmethane dyes, alizarin,
Examples include nitro dyes, quinoline dyes, indigo dyes, and phthalocyanine dyes. In addition, those leuco compounds, those whose absorption wavelength is temporarily shifted, and dye precursors such as tetrazolium salts are also included.
Further, these dyes may form chelate dyes with suitable metals. Regarding these dyes, for example, U.S. Pat. Nos. 3,880,658; 3,931,144;
No. 3,932,380; No. 3,932,381 and No. 3,942,987. Of these, cyan, magenta, and yellow dyes are particularly important for forming a color image. One example of them is given below.

Examples of yellow dyes: US Pat. No. 3,597,
No. 200, No. 3,309,199, No. 4,013,6
No. 33, No. 4,245,028, No. 4,156,60
No. 9, No. 4,139,383, No. 4,195,992
No. 4,148,641 No. 4,148,643
No. 4,336,322: JP-A-51-11493
No. 0, No. 56-71072: Research Disclosure 1
7630 (1978) and 16475 (1977).

Examples of magenta dyes: US Pat. No. 3,453,3
No. 107, No. 3,544,545, No. 3,932,3
80, 3,931,144, 3,932,30
No.8, No.3,954,476, No.4,233,237
Nos. 4,255,509 and 4,250,246
No. 4,142,891, No. 4,207,104
No. 4,287,292: JP-A-52-10672
No. 7, No. 53-23628, No. 55-36804,
56-73057, 56-71060, 55.
-134.

Examples of cyan dyes: US Pat. No. 3,482,382
972, 3,929,760, 4,013,6
No. 35, No. 4,268,625, No. 4,171,22
0, 4,242,435, 4,142,891
Issue No. 4,195,994, No. 4,147,544
No. 4,148,642: British Patent 1,551,1
No. 38: JP-A Nos. 54-99431 and 52-8827.
No. 53-47823, No. 53-143323,
54-99431 and 56-71061: European Patents (EPC) 53,037 and 53,040.
Issue, Research Disclosure 17,630 (1978)
And those described in No. 16,475 (1977).

Further, as a kind of the dye precursor portion, specific examples of the dye whose light absorption is temporarily shifted in the photosensitive element are described in US Pat. Nos. 4,310,612 and T-99.
9,003, 3,336,287, 3,57
9,334, 3,982,946, British Patent 1,
No. 467,317 and JP-A No. 57-158638.

Specific examples of the dye-donor compound represented by formula (I) used in the color light-sensitive material used in the present invention are shown below, but the present invention is not limited thereto.

[0029]

[Chemical 8]

[0030]

[Chemical 9]

[0031]

[Chemical 10]

[0032]

[Chemical 11]

[0033]

[Chemical 12]

The coating amount of the dye-donor compound represented by formula (I) of the present invention is 0.08 mmol / m ^{2 to} 0.4 mmol / m ^2.
2 is ^{preferred, 0.12mmol / m 2 ~0.30mmol / m} 2 is more preferable.

An example of the dye trapping agent represented by formula (II) of the present invention is described in detail in Japanese Patent Application No. 3-115586.

Specific examples of the dye trapping agent represented by the general formula (II) of the present invention are shown below, but the present invention is not limited thereto.

[0037]

[Chemical 13]

[0038]

[Chemical 14]

[0039]

[Chemical 15]

The general formula (II) the coating amount of the dye trapping agent represented by preferably 0.005~1.0g / m ^2, in particular 0.01 to 0.3 g / m ² is preferred.

The electron transfer agent used in the present invention is a reducing agent whose mobility is larger than that of the diffusion resistant reducing agent. The exposed silver halide is developed into an oxidant and crosses the diffusion resistant reducing agent. A compound capable of oxidizing is used.
Particularly, 1-phenyl-3-pyrazolidones and p-aminophenols are preferable. Since these electron transfer agents are known as described above, here, for example, US Pat.
No. 396, No. 5017454, No. 5026634,
No. 5032487, No. 5139919, JP-A-62.
No. 2,440,44, 63,262,647;
Nos. 16538 and 2-53049 are listed for reference. The coating amount of the electron transfer agent is preferably 0.01 to
It is 1.0 g / m < ² >, especially 0.03 to 0.3 g / m < ² >. The diffusion resistant reducing agent will be described later.

In the present invention, the antidiffusive reducing agent (electron donor) is preferably added to the same layer as the dye-donor compound, and the electron transfer agent is provided in a layer different from the dye-donor compound.
It is particularly preferable to add it to the intermediate layer.

In the photothermographic material used in the present invention,
The light-sensitive silver halide emulsion and the dye-donor compound are often added to the same layer, but they can also be added separately in separate layers. For example, when a colored dye-donor compound is present in the lower layer of the silver halide emulsion, the reduction in sensitivity can be prevented. The reducing agent is preferably incorporated in the photothermographic material, but it may be supplied from the outside by, for example, a method of diffusing from a dye fixing material described later.

In order to obtain a wide range of colors in the chromaticity diagram by using the three primary colors of yellow, magenta and cyan, a combination of at least three silver halide emulsion layers sensitive to different spectral regions is used. . For example, JP-A-59-180,550 and JP-A-64-13,546, 6
2-253,159, European Patent Publication No. 479,167.
Combination of three layers of blue-sensitive layer, green-sensitive layer and red-sensitive layer, green-sensitive layer, red-sensitive layer, infrared-sensitive layer combination, red-sensitive layer, infrared-sensitive layer (I), red There is a combination of the outer photosensitive layer (II). Each of the light-sensitive layers can take various arrangement orders known in a conventional type color light-sensitive material. Further, each of these photosensitive layers may be divided into two or more layers as required as described in JP-A-1-252954. In the heat-developable light-sensitive material, various non-light-sensitive layers such as a protective layer, an undercoat layer, an intermediate layer, a yellow filter layer, and an antihalation layer are provided between the uppermost layer and the lowermost layer between the silver halide emulsion layers. It may be provided, and various auxiliary layers such as a back layer can be provided on the opposite side of the support. Specifically, the layer structure as described in the above patent, US Pat. No. 5,051,33
An undercoat layer as described in JP-A-5-167,838
No. 6,120,533, the intermediate layer having a solid pigment as described in JP-A-61-20943,
Nos. 34,884 and 2-64,634, an intermediate layer containing a reducing agent and a DIR compound, US Pat.
17,454, 5,139,919, Japanese Patent Laid-Open No. 2-
An intermediate layer having an electron transfer agent as described in JP-A No. 235,044, a protective layer having a reducing agent as described in JP-A-4-249,245, and a layer in which these are combined can be provided. The support is preferably designed to have an antistatic function and a surface resistivity of 10 ¹² Ω · cm or less.

The silver halide emulsion which can be used in the present invention is
It may be any of silver chloride, silver bromide, silver iodobromide, silver chlorobromide, silver chloroiodide and silver chloroiodobromide. The silver halide emulsion used in the present invention may be either a surface latent image type emulsion or an internal latent image type emulsion. The internal latent image type emulsion is used as a direct reversal emulsion in combination with a nucleating agent or an optical fogging. Also,
It may be a so-called core-shell emulsion in which the inside of the grain and the surface layer of the grain have different phases, or silver halide having a different composition may be joined by epitaxial joining. The silver halide emulsion may be either monodisperse or polydisperse, and the method of mixing monodisperse emulsions and adjusting the gradation as described in JP-A-1-167,743 and 4-223,463 is preferably used. . The particle size is preferably 0.1 to 2 μm, particularly preferably 0.2 to 1.5 μm. The crystal habit of silver halide grains is one having a regular crystal such as a cube, octahedron, or tetrahedron, a sphere, an irregular crystal system such as a flat plate having a high aspect ratio, or a twin plane. Any of those having such a crystal defect, a composite system thereof or the like may be used. Specifically, US Pat. No. 4,500,626
No. 50, No. 4,628,021, Research Disclosure (hereinafter abbreviated as RD) No. 17,
029 (1978), the same No. 17,643 (197)
Dec. 8) pp. 22-23, ibid. 18,716 (1
997), p. 648, ibid. 307,105
(Nov. 1989) pp. 863-865, JP-A-62-
No. 253,159, No. 64-13,546, Japanese Patent Laid-Open No.
─236,546, Ⅲ-110,555, and Graphide, "Physics and Chemistry of Photography," published by Paul Monte (P.Glafkides, Chemie et Phisique Photographique, P.
aul Montel, 1967), "Photoemulsion Chemistry" by Duffin, published by Focal Press (GFDuffin, Photographic Emulsi
on Chemistry, Focal Press, 1966), "Production and Coating of Photographic Emulsions" by Zelikmann et al., published by Focal Press (V.
L. Zelikman et al., Making and Coating PhotographicE
Any of the silver halide emulsions prepared by the method described in Mulsion, Focal Press, 1964) or the like can be used.

In the process of preparing the light-sensitive silver halide emulsion of the present invention, it is preferable to carry out so-called desalting to remove excess salt. As a means for this, a Nudel water washing method in which gelatin is gelled may be used, and inorganic salts (for example, sodium sulfate) composed of polyvalent anions, anionic surfactants, anionic polymers (for example, polystyrene sulfonic acid). The precipitation method using sodium) or a gelatin derivative (eg, aliphatic acylated gelatin, aromatic acylated gelatin, aromatic carbamoylated gelatin, etc.) may be used. The sedimentation method is preferably used.

The photosensitive silver halide emulsion used in the present invention may contain heavy metals such as iridium, rhodium, platinum, cadmium, zinc, thallium, lead, iron and osmium for various purposes. These compounds may be used alone or in combination of two or more. The addition amount depends on the purpose of use, but is generally about 10 ^-9 to 10 ^-3 mol per mol of silver halide. When it is contained, it may be uniformly added to the particles, or may be localized inside or on the surface of the particles. Specifically, the emulsions described in JP-A-2-236542, JP-A-1-116637, and JP-A-4-126629 are preferably used.

In the step of forming grains of the photosensitive silver halide emulsion of the present invention, as a silver halide solvent, a rhodan salt, ammonia, a 4-substituted thioether compound, or JP-B No. 47-1
The organic thioether derivatives described in 1,386 or the sulfur-containing compounds described in JP-A-53-144,319 can be used.

For other conditions, see Graphide, "Physics and Chemistry of Photography", published by Paul Monte (P.Glaf).
kides, Chemie et Phisique Photographique, Paul Mont
el, 1967), "Photographic Emulsion Chemistry" by Duffin, published by Focal Press (GFDuffin, Photographic Emulsion Chemi
stry, Focal Press, 1966), "Manufacturing and coating of photographic emulsions" by Zelikmann et al., published by Focal Press (VLZelikm).
an et al., Making and Coating Photographic Emulsion,
Focal Press, 1964) etc. may be referred to. That is, any of an acidic method, a neutral method and an ammonia method may be used, and as a method of reacting a soluble silver salt and a soluble halogen salt, any of a one-sided mixing method, a simultaneous mixing method and a combination thereof may be used. The double jet method is preferably used to obtain a monodisperse emulsion. A back mixing method in which the grains are formed in the presence of excess silver ions can also be used. A so-called controlled double jet method, in which pAg in the liquid phase in which silver halide is produced is kept constant, can also be used as one form of the simultaneous mixing method.

Further, in order to accelerate the grain growth, the addition concentration, the addition amount, and the addition rate of the silver salt and the halogen salt to be added may be increased (JP-A-55-142,329 and JP-A-55-158). 124, U.S. Pat. No. 3,650,757). Further, the stirring method of the reaction liquid may be any known stirring method. Further, the temperature and pH of the reaction solution during the formation of silver halide grains may be set arbitrarily according to the purpose. The preferred pH range is 2.2 to 8.5, more preferably 2.5 to 7.5.

The photosensitive silver halide emulsion is usually a chemically sensitized silver halide emulsion. For the chemical sensitization of the photosensitive silver halide emulsion of the present invention, chalcogen sensitizing methods such as sulfur sensitizing method, selenium sensitizing method, tellurium sensitizing method, gold, platinum, etc., which are known in the emulsions for conventional type light-sensitive materials A noble metal sensitization method using palladium or the like and a reduction sensitization method can be used alone or in combination (for example, JP-A-3-110,55).
No. 5, Japanese Patent Application No. 4-75,798, etc.). These chemical sensitizations can also be carried out in the presence of a nitrogen-containing heterocyclic compound (JP-A-62-253,159). Further, an antifoggant described below can be added after the completion of the chemical sensitization. Specifically, JP-A-5-45,833 and JP-A-62.4-4
The method described in No. 0,446 can be used. The pH during chemical sensitization is preferably 5.3 to 10.5, more preferably 5.5 to 8.5, and pAg is preferably 6.0.
˜10.5, more preferably 6.8 to 9.0. The coating amount of the photosensitive silver halide emulsion used in the present invention is in the range of 1 mg to 10 g / m ² in terms of silver.

In order to provide the photosensitive silver halide used in the present invention with green-, red-, and infrared-sensitive color sensitivities, the photosensitive silver halide emulsion is spectrally sensitized with a methine dye or the like. . Further, if necessary, the blue-sensitive emulsion may be spectrally sensitized in the blue region. The dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes and hemioxonol dyes. Specifically, US Pat.
617,257, JP-A-59-180,550, JP-A-64-13,546, JP-A-5-45,828, and JP-A-5-45,834. These sensitizing dyes may be used alone, or a combination thereof may be used, and the combination of sensitizing dyes is often used particularly for the purpose of supersensitization or wavelength adjustment of spectral sensitivity. Along with the sensitizing dye, a dye having no spectral sensitizing effect itself or a compound that does not substantially absorb visible light and exhibits supersensitization may be contained in the emulsion (for example, US Pat. 615, 641 and those described in JP-A-63-23, 145). These sensitizing dyes may be added to the emulsion at the time of chemical ripening or before or after the chemical ripening, or according to U.S. Pat. Nos. 4,183,756 and 4,225,666 before and after the nucleation of silver halide grains. Good. Further, these sensitizing dyes and supersensitizers may be added in a solution of an organic solvent such as methanol, a dispersion of gelatin or a solution of a surfactant. The addition amount is generally 10 ^-8 to 10 per mol of silver halide.
^-It is about ² mol.

Additives used in such steps and known photographic additives usable in the photothermographic material and dye-fixing material of the present invention are described in Research Disclosure (RD) above.
No. 17, 643, the same No. 18,716 and N
o. 307 and 105, and the corresponding parts are summarized in the table below. Types of additives RD17643 RD18716 RD307105 1. Chemical sensitizer page 23 page 648 right column page 866 2. Sensitivity enhancer page 648, right column 3. Spectral sensitizer, pages 23 to 24, page 648, right column, pages 866 to 868, supersensitizer, page 649, right column, 4. 4. Optical brightener page 24 page 648 right column page 868 5. Fogging prevention 24 to 25 pages 649 right column 868 to 870 Agents and stabilizers 6. Light absorber, pages 25-26, page 649, right column, page 873, filter dye, page 650, left column, ultraviolet absorber 7. Dye image Page 25 Page 650 Left column Page 872 Stabilizer 8. Hardener, page 26, page 651, left column, pages 874-875 9. Binder page 26 page 651 left column page 873-874 10. Plasticizer, page 27, page 650, right column, page 876, lubricant 11. Coating aid, pages 26 to 27, page 650, right column, pages 875 to 876, surface active agent 12. Static page 27, page 650, right column, pages 876-877, inhibitor 13. Matting agent pp. 878-879

A hydrophilic binder is preferably used as the binder of the constituent layers of the photothermographic material and the dye fixing material. Examples thereof include the above-mentioned RD and JP-A-64-13,54.
Examples thereof include those described in No. 6, pages (71) to (75). Specifically, a transparent or translucent hydrophilic binder is preferable, and for example, gelatin, proteins such as gelatin derivatives or cellulose derivatives, natural compounds such as starch, gum arabic, dextran, and polysaccharides such as pullulan and polyvinyl alcohol, Examples thereof include synthetic polymer compounds such as polyvinylpyrrolidone and acrylamide polymers. Also, U.S. Pat. No. 4,960,681 and Japanese Patent Laid-Open No. 62-2
45, 260, etc., ie, a superpolymer of vinyl monomers having --COOM or --SO ₃ M (M is a hydrogen atom or an alkali metal) or homopolymers of these vinyl monomers, or other vinyl monomers. The copolymer (for example, sodium methacrylate, ammonium methacrylate, Sumika Gel L-5H manufactured by Sumitomo Chemical Co., Ltd.) is also used. These binders can be used in combination of two or more. In particular, a combination of gelatin and the above binder is preferred. Gelatin may be selected from lime-processed gelatin, acid-processed gelatin, so-called decalcified gelatin having a reduced content of calcium, etc. according to various purposes. Is also preferable.

When a system in which a small amount of water is supplied for thermal development is adopted, it is possible to quickly absorb water by using the above superabsorbent polymer. Also, the use of superabsorbent polymers in the dye-fixing layer or its protective layer can prevent the dye from retransferring from the dye-fixing element to another after transfer. In the present invention, the coating amount of the binder is preferably 20 g or less per 1 m ² ,
Particularly, it is suitable that the amount is 10 g or less, further 7 g to 0.5 g.

In the present invention, an organic metal salt may be used as an oxidizing agent together with the light-sensitive silver halide emulsion. Among such organic metal salts, organic silver salts are particularly preferably used. Organic compounds that can be used to form the above organic silver salt oxidizing agents include those described in US Pat.
There are benzotriazoles, fatty acids and other compounds described in Nos. 00,626, columns 52 to 53. The acetylene silver described in U.S. Pat. No. 4,775,613 is also useful. Two or more kinds of organic silver salts may be used in combination. The above organic silver salt is 0.01 mol per mol of photosensitive silver halide.
-10 mol, preferably 0.01-1 mol can be used in combination. The total coating amount of the photosensitive silver halide emulsion and the organic silver salt is 0.05 to 10 g / m ² , preferably 0.1 to ⁴ g / m ² g in terms of silver.

As the reducing agent used in the present invention, those known in the field of photothermographic materials can be used. Further, a reducing agent precursor which has no reducing property itself but exhibits reducing property by the action of a nucleophile or heat during the development process can also be used. Examples of the reducing agent used in the present invention include U.S. Pat. No. 4,500,626, columns 49 to 50, U.S. Pat. Nos. 4,839,272, and 4,33.
0,617, 4,590,152, 5,01
7,454, 5,139,919, JP-A-60-
140, 335, pages (17) to (18), ibid. 57-
40,245, 56-138,736, 59-
178, 458, 59-53, 831, 59-
182, 449, 59-182, 450, 60
-119,555, 60-128,436, 6
0-128,439, 60-198,540, 60-181,742, 61-259,253,
62-201,434, 62-244,044
No. 62-131, 253, 62-131, 25
No. 6, No. 63-10, 151, No. 64-13, 546
No. (40) to (57), Japanese Patent Application Laid-Open No. 1-120,5
No. 53, No. 2-32, 338, No. 2-35, 451
No. 2-234, 158, 3-160, 443
And EP-A-220,746, pages 78 to 96, and the like. Combinations of various reducing agents such as those disclosed in US Pat. No. 3,039,869 can also be used.

The diffusion resistant reducing agent (electron donor) used in combination with the electron transfer agent may be any one of the above reducing agents which does not substantially move in the layer of the light-sensitive material, preferably hydroquinone. , Sulfonamide phenols, sulfonamide naphthols, JP-A-53-110
827, US Pat. Nos. 5,032,487 and 5,0.
26,634 and 4,839,272 include compounds described as electron donors. An electron donor precursor as described in JP-A-3-160,443 is also preferably used. Further, the reducing agent can be used in the intermediate layer and the protective layer for various purposes such as preventing color mixture, improving color reproduction, improving white background, and preventing silver transfer to the dye fixing material. Specifically, European Patent Publication Nos. 524,649 and 357,040, and JP-A-4-249,245 and 2
-64,633, 2-46,450, JP-A-63.
The reducing agents described in JP-A 186,240 are preferably used. In addition, Japanese Patent Publication No. 3-63,733 and Japanese Patent Laid-Open No. 1-15
No. 0,135, No. 2-110, 557, No. 2-64,
No. 634, No. 3-43,735, European Patent Publication No. 45
Development inhibitor releasing reducing compounds such as those described in 1,833 can also be used. In the present invention, the total addition amount of the reducing agent other than the electron transfer agent is 0.01 to 20 mol per 1 mol of silver,
It is particularly preferably 0.1 to 10 mol.

In the present invention, when a silver ion is reduced to silver under a high temperature condition, a dye-donor compound which forms or releases a mobile dye in reverse reaction to this reaction is defined as the dye-donor compound of the present invention. It can also be contained in combination. Examples of the dye-donating compound that can be used in the present invention can be represented by the following general formula [LI]. ((Dye) m-Y) n-Z [LI] Dye represents a dye group, a temporarily shortened dye group or a dye precursor group, Y represents a simple bond or linking group, and Z represents an image-like structure. Inversely corresponding to the photosensitive silver salt having a latent image, a difference in the diffusivity of the compound represented by ((Dye) m-Y) n-Z is produced, or a (Dye) m-Y is released. , Released (Dye) m-Y and ((Dye) m-
Y) represents a group having a property of causing a difference in diffusibility from n-Z, m represents an integer of 1 to 5,
n represents 1 or 2, and when either m or n is not 1, a plurality of Dyes may be the same or different. Specific examples of the dye donating compound represented by the general formula [LI] include the following compounds (1) to (3).

US Pat. Nos. 3,134,764, 3,362,819, 3,597,200, 3,544,545, 3,482,972 and Japanese Patent Publication No. 3-68. No. 387, etc., a dye developer in which a hydroquinone-based developer and a dye component are linked. This dye developing agent is diffusible in an alkaline environment, but becomes non-diffusible when it reacts with silver halide. As described in U.S. Pat. No. 4,503,137, a non-diffusible compound which releases a diffusible dye in an alkaline environment but loses its ability when reacted with silver halide can also be used. An example is U.S. Pat. No. 3,983.
Compounds releasing a diffusible dye by an intramolecular nucleophilic substitution reaction described in US Pat. No. 4,199,
Compounds that release a diffusible dye by the intramolecular rewinding reaction of the isoxazolone ring described in JP-A No. 354 and the like.

US Pat. No. 4,559,290, European Patent 220,746A2, US Pat. No. 4,783.
396, Open Technical Report 87-6, 199, JP-A-64-1.
As described in No. 3,546, a non-diffusible compound that reacts with a reducing agent remaining without being oxidized by development to release a diffusible dye can also be used. Examples thereof include U.S. Pat. Nos. 4,139,389 and 4,139,379.
No. 59-185,333, 57-84,4.
Compounds which release diffusible dyes by nucleophilic substitution reaction in the molecule after reduction described in US Pat. No. 4,232,107, JP-A-59-101,64
9, No. 61-88,257, RD24,025 (1
984) and the like, which release a diffusible dye by an intramolecular electron transfer reaction after reduction, West German Patent No. 3,008,588A, JP-A-56-142,5.
30, U.S. Pat. Nos. 4,343,893 and 4,61
Compounds which release a diffusible dye by cleavage of a single bond after reduction as described in US Pat.
Nitro compounds releasing a diffusible dye after electron acceptance as described in U.S. Pat.
Examples thereof include compounds that release a diffusible dye after electron acceptance as described in JP-A No. 9,610.

Further, as more preferable ones, European Patent No. 220,746, Open Technical Report 87-6,199, US Pat. No. 4,783,396, JP-A-63-201,6
No. 53, No. 63-201, 654, No. 64-13, 5
No. 46, etc., a compound having an N—X bond (X represents an oxygen, sulfur or nitrogen atom) and an electron-withdrawing group in one molecule, one molecule described in JP-A-1-26,842. A compound having SO ₂ -X (where X is as defined above) and an electron-withdrawing group within the molecule, and a PO-X bond (where X is as defined above) within one molecule described in JP-A-63-271344. And a compound having an electron-withdrawing group, JP-A-63-271341
The compound having a C—X ′ bond (X ′ is the same as X or representing —SO ₂ —) and an electron-withdrawing group in one molecule described in No. In addition, JP-A-1-161,237
The compounds described in JP-A No. 1-161, 342, which release the diffusible dye by cleaving a single bond after reduction by a π bond conjugated with an electron-accepting group can also be used. Among these, a compound having an N—X bond and an electron-withdrawing group in one molecule is particularly preferable. A specific example is European Patent 220,746.
Or the compounds (1) to (3), (7) to (10), (12), described in U.S. Pat. No. 4,783,396.
(13), (15), (23) to (26), (31),
(32), (35), (36), (40), (41),
(44), (53) to (59), (64), (70),
Compound (11) described in Published Technical Report 87-6,199
To (23), and compounds (1) to (84) described in JP-A No. 64-13,546.

Hydrophobic additives such as dye-providing compounds and diffusion-resistant reducing agents can be incorporated into the layer of the photothermographic material by known methods such as the method described in US Pat. No. 2,322,027. it can. In this case, US Pat.
55,470, 4,536,466, 4,53
No. 6,467, No. 4,587, 206, No. 4,55
No. 5,476, No. 4,599,296, Japanese Patent Fair 3-6
A high-boiling point organic solvent such as that described in No. 2,256 can be used in combination with a low-boiling point organic solvent having a boiling point of 50 ° C. to 160 ° C., if necessary. In addition, two or more kinds of these dye donating compounds, diffusion resistant reducing agents, high boiling point organic solvents and the like can be used in combination. The amount of the high boiling point organic solvent is 10 g or less, preferably 5 g or less, and more preferably 1 g to 0.1 g, relative to 1 g of the dye-donor compound used. Also, 1 cc or less, further 0.5 for 1 g of binder
cc or less, particularly 0.3 cc or less is suitable. Further, a dispersion method using a polymer described in JP-B-51-39,853 and JP-A-51-59,943 and JP-A-62-3
The method of adding it as a fine particle dispersion described in No. 0,242 and the like can also be used. In the case of a compound which is substantially insoluble in water, fine particles can be dispersed and contained in a binder in addition to the above method. When dispersing the hydrophobic compound in the hydrophilic colloid, various surfactants can be used. For example, those listed as the surfactants on pages (37) to (38) of JP-A-59-157,636 and described above in Research Disclosure can be used. In the photothermographic material of the present invention, a compound capable of activating development and stabilizing an image at the same time can be used. The specific compounds preferably used are described in US Pat. No. 4,500,626, columns 51 to 52.

In a system for forming an image by diffusion transfer of a dye, for the purpose of improving the white background of the obtained image by immobilizing or colorless unnecessary dyes or coloring matters in the constituent layers of the photothermographic material of the present invention. Various compounds can be added. Specifically, European Published Patent No. 353,741
No. 461,416, JP-A-63-163,345.
No. 62-203,158 can be used.

Various pigments and dyes can be used in the constituent layers of the photothermographic material of the present invention for the purpose of improving color separation and increasing sensitivity. Specifically, the compounds described in Research Disclosure and European Published Patent No. 479,1
67, 502,508, JP-A-1-167,83
No.8, No.4-343,355, No.2-168,252
No. 6, JP-A-61-20,943, European Patent Publication No. 47
The compounds and layer constitutions described in No. 9,167, No. 502,508 and the like can be used.

In a system for forming an image by diffusion transfer of a dye, a dye fixing material is used together with a photothermographic material. The dye fixing material may be applied separately on a support different from the photosensitive material, or may be applied on the same support as the photosensitive material. Regarding the relationship between the light-sensitive material and the dye fixing material, the relationship with the support, and the relationship with the white reflective layer, the relationship described in column 57 of US Pat. No. 4,500,626 can be applied to the present invention. The dye fixing material preferably used in the present invention has at least one layer containing a mordant and a binder. As the mordant, those known in the photographic field can be used. Specific examples thereof include US Pat. No. 4,500,626, columns 58 to 59, JP-A-61-161.
88, 256, pages (32) to (41) and JP-A-1-1.
No. 61,236, mordanting agents described on pages (4) to (7), U.S. Pat. Nos. 4,774,162 and 4,619,883.
Nos. 4,594,308 and the like. Further, a dye-receptive polymer compound as described in US Pat. No. 4,463,079 may be used. The hydrophilic binder is preferable as the binder used in the dye fixing material of the present invention. Further, it is preferable to use carrageenans as described in EP-A-443,529 and latexes having a glass transition temperature of 40 ° C. or lower as described in JP-B-3-74,820. If necessary, the dye fixing material may be provided with auxiliary layers such as a protective layer, a peeling layer, an undercoat layer, an intermediate layer, a back layer and an anti-curl layer. In particular, it is useful to provide a protective layer.

In the constituent layers of the photothermographic material and the dye-fixing material, a high boiling point organic solvent can be used as a plasticizer, a slipping agent or an agent for improving the releasability between the photosensitive material and the dye-fixing material. Specific examples include those described in Research Disclosure and JP-A-62-245,253. Further, various silicone oils (all silicone oils from dimethyl silicone oils to modified silicone oils obtained by introducing various organic groups into dimethyl siloxane) can be used for the above purpose. As examples thereof, various modified silicone oils described in “Modified Silicone Oil” technical material P6-18B issued by Shin-Etsu Silicone Co., Ltd., particularly carboxy-modified silicone (trade name X-22-3710) are effective. Silicone oils described in JP-A Nos. 62-215,953 and 63-46,449 are also effective.

An anti-fading agent may be used in the photothermographic material and dye fixing material. As the anti-fading agent, there are, for example, an antioxidant, an ultraviolet absorber, or a certain kind of metal complex, and the dye image stabilizer and the ultraviolet absorber described in the above Research Disclosure are also useful. Examples of the antioxidant include chroman compounds, coumarane compounds, phenol compounds (for example, hindered phenols), hydroquinone derivatives, hindered amine derivatives, and spiroindane compounds. In addition, JP-A-61
The compounds described in -159,644 are also effective. As the ultraviolet absorber, benzotriazole compounds (US Pat. No. 3,533,794 etc.), 4-thiazolidone compounds (US Pat. No. 3,352,681 etc.), benzophenone compounds (JP-A-46- 2,784) and others, JP-A-54-48,535 and 62-1.
36,641 and 61-88,256. Further, the ultraviolet absorbing polymer described in JP-A-62-260,152 is also effective. Examples of the metal complex include U.S. Pat. Nos. 4,241,155 and 4,245.
No. 018, columns 3 to 36, No. 4,254,195, number 3
Column-8, JP-A-62-174,741 and 61-8
8, 256 (27) to (29), 63-199,
248, JP-A-1-75,568, 1-74,2
There are compounds described in No. 72 and the like.

The anti-fading agent for preventing the fading of the dye transferred to the dye fixing material may be contained in the dye fixing material in advance, or the dye may be applied from the outside such as a photothermographic material or a transfer solvent described later. You may make it supply to a fixing material. The above-mentioned antioxidant, ultraviolet absorber, and metal complex may be used in combination with each other. A fluorescent whitening agent may be used in the photothermographic material and the dye fixing material. In particular, it is preferable to incorporate a fluorescent whitening agent in the dye fixing material or supply it from the outside such as a photothermographic material or a transfer solvent. As an example, K. Veenkataraman
Chapter "The Chemistry of Synthe"
tic Dyes "Vol. V, Chapter 8, JP-A-61-143
Examples thereof include the compounds described in No. 752. More specifically, stilbene compounds, coumarin compounds, biphenyl compounds, benzoxazolyl compounds, naphthalimide compounds, pyrazoline compounds, carbostyryl compounds and the like can be mentioned. The fluorescent whitening agent can be used in combination with an anti-fading agent or an ultraviolet absorber. Specific examples of these anti-fading agents, ultraviolet absorbers, and fluorescent whitening agents are described in JP-A-62-215,272 (125) to (137), JP-A-1-161,236.
No. (17)-(43).

As the hardener used in the constituent layers of the photothermographic material and the dye fixing material, the above-mentioned Research Disclosure, US Pat. No. 4,678,739, column 41, US Pat. Sho 59-116,655
No. 62-245, 261, 61-18, 942.
And the hardeners described in JP-A-4-218,044 and the like. More specifically, aldehyde type hardener (formaldehyde etc.), aziridine type hardener, epoxy type hardener, vinyl sulfone type hardener (N, N'-ethylene-bis (vinylsulfonylacetamide)) Ethane),
Examples thereof include N-methylol type hardeners (dimethylolurea etc.) and polymer hardeners (compounds described in JP-A-62-234,157). These hardeners
0.001 to 1 g, preferably 0.005 to 0.5 g, is used per 1 g of coated gelatin. The layer to be added may be any of the layers constituting the light-sensitive material and the dye-solid material, or may be divided into two or more layers and added.

Various antifoggants or photographic stabilizers and their precursors can be used in the constituent layers of the photothermographic material and the dye fixing material. Specific examples thereof include Research Disclosure, U.S. Pat. Nos. 5,089,378, 4,500,627, 4,614,702, and JP-A 64-13,546 (7). (9) page, (57) to (71) page and (8
1)-(97), U.S. Pat. No. 4,775,610,
No. 4,626,500, No. 4,983,494, JP-A Nos. 62-174,747 and 62-239,148.
No. 63-264,747, JP-A-1-150,1.
No. 35, No. 2-110,557, No. 2-178,65
No. 0, RD17, 643 (1978) (24)-(2
5) The compounds described on page etc. are mentioned. These compounds are preferably used in an amount of 5 × 10 ⁻⁶ to 1 × 10 ⁻¹ mol, and more preferably 1 × 10 ⁻⁵ to 1 × 10 ⁻² mol, per mol of silver.

In the constituent layers of the photothermographic material and the dye fixing material, a coating aid, a peeling property improving property, a slip property improving property, an antistatic property,
Various surfactants can be used for the purpose of promoting development and the like. Specific examples of the surfactant include Research Disclosure, JP-A Nos. 62-173,463 and 62-62.
No. 183,457. The constituent layers of the photothermographic material and the dye-fixing material may contain an organic fluoro compound for the purpose of improving slipperiness, preventing electrification, and improving releasability. As typical examples of organic fluoro compounds, JP-B-57-9053, columns 8 to 17, JP-A-61-209 can be used.
No. 44, No. 62-135826, or the like, or a fluorine-containing surfactant such as a fluorine-containing surfactant such as a fluorine-containing compound such as a fluorine oil or a solid fluorine-containing compound resin such as a tetrafluoroethylene resin. Can be mentioned.

A matting agent can be used in the photothermographic material and dye fixing material for the purpose of preventing adhesion, improving slipperiness, and providing a non-glossy surface. As the matting agent, in addition to the compounds described in JP-A-61-88256, page 29, such as silicon dioxide, polyolefin or polymethacrylate, benzoguanamine resin beads, polycarbonate resin beads, AS resin beads and the like are disclosed in JP-A-63-2749.
44, and 63-274952.
In addition, the compounds described in the above Research Disclosure can be used. These matting agents are the top layer (protective layer)
Not only can it be added to the lower layer, if desired.
In addition, the constituent layers of the photothermographic material and the dye-fixing material may contain a thermal solvent, a defoaming agent, an antibacterial / antifungal agent, colloidal silica and the like. Specific examples of these additives are described in JP-A-61-88256, pages (26) to (32), JP-A-3.
-11,338, Japanese Patent Publication No. 2-51,496, etc.

In the present invention, an image forming accelerator can be used in the photothermographic material and / or the dye fixing material. The image formation accelerator includes a redox reaction between a silver salt oxidizing agent and a reducing agent, a reaction such as generation of a dye from a dye-donor substance, decomposition of the dye or release of a diffusible dye, and heat development sensitization. It has functions such as accelerating the migration of dyes from the material layer to the dye fixing layer. From the physicochemical functions, bases or base precursors, nucleophilic compounds, high boiling organic solvents (oils), thermal solvents, surfactants. , And compounds that interact with silver or silver ions. However, these substance groups generally have a composite function, and usually have some of the above-mentioned accelerating effects together. Details thereof are described in US Pat. No. 4,678,739, columns 38 to 40. As a base precursor, a salt of an organic acid and a base that is decarboxylated by heat, an intramolecular nucleophilic substitution reaction,
Examples include compounds that release amines by Rossen rearrangement or Beckmann rearrangement. A specific example is U.S. Pat. No. 4,
Nos. 514,493 and 4,657,848.

In a system in which heat development and dye transfer are carried out simultaneously in the presence of a small amount of water, a method of incorporating a base and / or a base precursor into the dye-fixing material is preferable in terms of enhancing the storability of the photothermographic material. . Besides the above,
European Patent Publication 210,660, US Pat. No. 4,74
No. 0,445, a combination of a sparingly soluble metal compound and a compound capable of complex-forming reaction with a metal ion constituting the sparingly soluble metal compound (referred to as a complex-forming compound), and JP-A-61-232451. The compounds that generate a base by electrolysis described in 1) can also be used as the base precursor. The former method is particularly effective. As described in the above-mentioned patent, it is advantageous to add the hardly soluble metal compound and the complex-forming compound separately to the photothermographic material and the dye-fixing material.

In the present invention, various development terminators can be used in the photothermographic material and / or the dye fixing material for the purpose of always obtaining a constant image with respect to the fluctuation of processing temperature and processing time during development. . The term "development terminating agent" as used herein refers to a compound that immediately neutralizes or reacts with a base to reduce the concentration of the base in the film to stop the development after proper development, or inhibits development by interacting with silver and a silver salt. Compound. Specific examples thereof include an acid precursor that releases an acid when heated, an electrophilic compound that causes a substitution reaction with a coexisting base when heated, or a nitrogen-containing heterocyclic compound, a mercapto compound and a precursor thereof. More specifically, JP-A-62
-253, 159, pages (31) to (32).

In the present invention, the support for the photothermographic material or dye fixing material is one that can withstand the processing temperature. In general, papers, synthetic polymers (films) described in “Basics of Photographic Engineering: Silver Salt Photographs,” edited by The Photographic Society of Japan, published by Corona Publishing Co., Ltd. (1979) (223) to (240) pages. ) And other photographic supports. Specifically, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyvinyl chloride, polystyrene, polypropylene, polyimide, celluloses (for example, triacetyl cellulose) or those containing pigments such as titanium oxide in these films, Film method synthetic paper made from polypropylene etc., mixed paper made from synthetic resin pulp such as polyethylene and natural pulp, Yankee paper, baryta paper, coated paper (particularly cast coated paper), metal, cloth, glass etc. Is used. These can be used alone or as a support having one or both sides laminated with a synthetic polymer such as polyethylene. The laminate layer may contain pigments and dyes such as titanium oxide, ultramarine blue and carbon black as required. In addition, JP-A-62-253,159 (29) to (31), JP-A-1-161,236 (14) to (17), JP-A-63-316,848.
No. 2, JP-A-2-22,651, and JP-A-3-56,955.
No. 5,001,033 and the like can be used. The back surface of these supports may be coated with a hydrophilic binder, a semiconductive metal oxide such as alumina sol and tin oxide, carbon black and other antistatic agents. Specifically, JP-A-63-220,24
The support described in No. 6 can be used. Further, the surface of the support is preferably subjected to various surface treatments and undercoats for the purpose of improving the adhesion with the hydrophilic binder.

As a method for exposing and recording an image on the photothermographic material, for example, a method of directly photographing a landscape or a person using a camera or the like, or exposing through a reversal film or a negative film using a printer or a enlarger is used. Method, scanning exposure of the original image through a slit, etc. using an exposure device of a copying machine, scanning exposure by causing image information to emit light through a light emitting diode, various lasers (laser diode, gas laser, etc.) Method (Japanese Patent Application Laid-Open No. 2-129,625, Japanese Patent Application No. 3-33)
8,182, 4-9,388, 4-281,4
No. 42), image information is output to an image display device such as a CRT, a liquid crystal display, an electroluminescence display, and a plasma display, and exposed directly or through an optical system.

As a light source for recording an image on a photothermographic material, as described above, natural light, a tungsten lamp, a light emitting diode, a laser light source, a CRT light source, etc., US Pat. No. 4,500,626, column 56, Special Features Kaihei 2-53,
The light source and the exposure method described in Nos. 378 and 2-54,672 can be used. Image exposure can also be performed using a wavelength conversion element in which a non-linear optical material and a coherent light source such as laser light are combined. Here, the non-linear optical material is a material capable of exhibiting non-linearity between polarization and an electric field, which appears when a strong optical electric field such as laser light is applied, such as lithium niobate and potassium dihydrogen phosphate (KDP). ), An inorganic compound represented by lithium iodate, BaB ₂ O ₄ or the like, a urea derivative, a nitroaniline derivative, for example, nitropyridine-N-such as 3-methyl-4-nitropyridine-N-oxide (POM). Oxide derivatives, JP-A-61-53462 and JP-A-62-2104
The compound described in No. 32 is preferably used. As the form of the wavelength conversion element, a single crystal optical waveguide type, a fiber type and the like are known, and any of them is useful. Further, the above-mentioned image information is an image signal obtained from a video camera, an electronic still camera, or the like, NTV signal standard (NT
For example, a television signal represented by SC), an image signal obtained by dividing an original image into a large number of pixels such as a scanner, or an image signal created by using a computer represented by CG or CAD can be used.

The photothermographic material and / or dye fixing material of the present invention may have a form having a conductive heating element layer as a heating means for heat development and diffusion transfer of dye. The heat generating element in this case is disclosed in JP-A-61-14.
Those described in No. 5,544 can be used. The heating temperature in the heat development step is about 50 ° C to 250 ° C, and particularly about 60 ° C to 180 ° C is useful. The dye diffusion transfer process may be performed simultaneously with the heat development, or may be performed after the end of the heat development process. In the latter case, the heating temperature in the transfer step can be transferred in the range from the temperature in the heat development step to room temperature, but is preferably 50 ° C. or higher and up to about 10 ° C. lower than the temperature in the heat development step. .

Although the migration of the dye occurs only by heat,
Solvents may be used to facilitate dye transfer. Also,
U.S. Pat. Nos. 4,704,345 and 4,740,44
No. 5, JP-A-61-238,056 and the like, a method of performing development and transfer simultaneously or continuously by heating in the presence of a small amount of solvent (particularly water) is also useful. In this method, the heating temperature is preferably 50 ° C. or higher and not higher than the boiling point of the solvent, for example, 50 ° C. to 100 when the solvent is water.
° C is preferred. Examples of the solvent used for accelerating the development and / or the diffusion transfer of the dye include water, a basic aqueous solution containing an inorganic alkali metal salt or an organic base (these bases are referred to in the section of the image formation accelerator). Those described are used), or a low boiling point solvent or a mixed solution of a low boiling point solvent and water or the above basic aqueous solution. Further, a surfactant, an antifoggant, a complex-forming compound with a poorly soluble metal salt, an antifungal agent, and an antibacterial agent may be contained in the solvent. Water is preferably used as the solvent used in the steps of heat development and diffusion transfer, but any commonly used water may be used. Specifically, distilled water, tap water, well water, mineral water and the like can be used. Further, in the heat developing apparatus using the photothermographic material and the dye fixing material of the present invention, water may be used up, or may be circulated for repeated use. In the latter case, water containing the components eluted from the material will be used.
Moreover, JP-A-63-144,354 and JP-A-63-144.
355, 62-38,460, JP-A-3-21.
You may use the apparatus and water described in 0,555 etc.

These solvents can be applied to the photothermographic material, the dye fixing material, or both of them. The amount used may be not more than the weight of the solvent corresponding to the maximum swelling volume of the entire coated film. As a method of giving this water,
For example, the methods described in JP-A-62-253,159, page (5) and JP-A-63-85,544 are preferably used. Also, the solvent is enclosed in microcapsules,
It can also be used by preliminarily incorporating it in the form of a hydrate into the photothermographic material or the dye fixing element or both. The temperature of the applied water may be 30 ° to 60 ° C as described in JP-A-63-85,544. In particular, it is useful to set the temperature to 45 ° C. or higher for the purpose of preventing the growth of various fungi in water.

In order to promote dye transfer, a system in which a hydrophilic thermal solvent that is solid at room temperature and dissolves at high temperature is incorporated in the photothermographic material and / or the dye fixing material can also be adopted. The layer to be incorporated may be any of a photosensitive silver halide emulsion layer, an intermediate layer, a protective layer and a dye fixing layer, but a dye fixing layer and / or a layer adjacent thereto is preferable. Examples of hydrophilic thermal solvents include ureas, pyridines, amides, sulfonamides, imides, alcohols, oximes and other heterocycles.

As a heating method in the developing and / or transferring step, a heated block or plate is brought into contact with a heating plate, a hot presser, a heating roller, a heating drum, a halogen lamp heater, an infrared lamp or a far infrared lamp heater. There is a method of contacting with, etc. or passing through in a high temperature atmosphere. The method described in JP-A-62-253,159 and JP-A-61-147,244 (page 27) can be applied to the method of superimposing the heat-developable light-sensitive material and the dye-fixing material.

Any of a variety of thermal development apparatus can be used in processing the photographic elements of this invention. For example, JP-A-59-7
5,247, 59-177, 547, 59-1
81,353, 60-18,951, No. 62
─25,944, Japanese Patent Application No. 4-277,517, 4
No. 243,072, No. 4-244,693, etc. are preferably used. Also, as a commercially available device, Fuji Photo Film Co., Ltd. Pictrostat 1
00, the same Pictrostat 200, the same Pictrography 3000, the same Pictrography 2000, etc. can be used.

[0086]

The present invention will be described with reference to the following examples.
The present invention is not limited to these.

Example 1

A method for preparing a zinc hydroxide dispersion will be described. Zinc hydroxide having an average particle size of 0.08 μm 12.
5 g, 1 g of carboxymethyl cellulose as a dispersant,
0.1 g of sodium polyacrylate in 5% gelatin aqueous solution 1
In addition to 00 ml, it was ground in a mill for 30 minutes using glass beads having an average particle size of 0.75 mm. Separate the glass beads,
A zinc hydroxide dispersion was obtained.

Next, a method for preparing a dispersion of the electron transfer agent will be described. 10 g of electron transfer agent (1), 0.5 g of polyethylene glycol nonylphenyl ether as a dispersant, and 0.5 g of anionic surfactant (1) were added to a 5% gelatin aqueous solution, and glass beads having an average particle size of 0.75 mm were milled. Was used for 60 minutes. The glass beads were separated to obtain a dispersion of the electron transfer agent having an average particle size of 0.25 μm.

[0090]

[Chemical 16]

[0091]

[Chemical 17]

Next, a method for preparing a dye trapping agent dispersion will be described. Polymer latex (A) (13% solid content)
While stirring a mixed solution of 108 ml, 20 g of the surfactant (1) and 1232 ml of water, 600 ml of a 5% aqueous solution of the anionic surfactant (1) was added over 10 minutes. Using the ultrafiltration module, the dispersion thus prepared is 500 ml.
It was concentrated and desalted. Next, 1500 ml of water is added, and the same operation is repeated once more to repeat the dye trapping agent dispersion 500.
g was obtained.

[0093]

[Chemical 18]

[0094]

[Chemical 19]

Next, a method for preparing a gelatin dispersion of a hydrophobic additive will be described. Cyan, magenta, yellow, and electron donor gelatin dispersions were prepared according to the formulations in Table 1, respectively. That is, each oil phase component was dissolved by heating at about 60 ° C. to form a uniform solution, and this solution and an aqueous phase component heated at about 60 ° C. were added, and the mixture was stirred and mixed, followed by a homogenizer for 13 minutes,
Dispersed at 12000 rpm. Water was added to this and stirred to obtain a uniform dispersion.

[0096]

[Table 1]

[0097]

[Chemical 20]

[0098]

[Chemical 21]

[0099]

[Chemical formula 22]

[0100]

[Chemical formula 23]

[0101]

[Chemical formula 24]

[0102]

[Chemical 25]

[0103]

[Chemical formula 26]

[0104]

[Chemical 27]

Next, a method for preparing a photosensitive silver halide emulsion will be described.

Photosensitive Silver Halide Emulsion (1) [For red-sensitive emulsion layer] Well stirred gelatin aqueous solution (gelatin 20 g, potassium bromide 0.5 g, sodium chloride 3 in 480 ml of water).
g and 30 mg of the chemical (A) were added and kept at 45 ° C.), the solutions (I) and (II) in Table 2 were simultaneously added at an equal flow rate for 20 minutes. After 5 minutes, solution (III) and solution (IV) in Table 2 were simultaneously added at the same flow rate for 25 minutes. In addition, 10 minutes after the start of addition of the liquids (III) and (IV), an aqueous solution of a gelatin dispersion of the dye (containing 105 g of water, 1 g of gelatin, 70 mg of the dye (a), 139 mg of the dye (b), and 5 mg of the dye (c)) was added. (Incubated at 45 ° C.) was added over 20 minutes.

After washing with water and desalting by a conventional method, 22 g of lime-treated ossein gelatin was added to adjust pH to 6.2 and pAg to 7.7, and sodium thiosulfate and 4-hydroxy- were added.
6-Methyl-1,3,3a, 7-tetrazaindene and chloroauric acid were added for optimum chemical sensitization at 60 ° C., and then an antifoggant (2) was added, followed by cooling. Thus, 635 g of a monodisperse cubic silver chlorobromide emulsion having an average grain size of 0.30 μm was obtained.

[0108]

[Chemical 28]

[0109]

[Table 2]

[0110]

[Chemical 29]

Photosensitive silver halide emulsion (2) [for red-sensitive emulsion layer] An aqueous solution of well-stirred gelatin (in 783 ml of water, 20 g of gelatin, 0.5 g of potassium bromide, 6 parts of sodium chloride).
g and 30 mg of the chemical (A) were added and kept at 65 ° C.), the solutions (I) and (II) in Table 3 were simultaneously added at an equal flow rate for 30 minutes. After 5 minutes, solution (III) and solution (IV) in Table 3 were added simultaneously at the same flow rate for 15 minutes. Two minutes after the addition of the solutions (III) and (IV), an aqueous solution of a gelatin dispersion of a dye (0.9 g of gelatin in 76 ml of water, 76 mg of the dye (a),
The dye (b) (150 mg) and the dye (c) (5 mg) which had been kept at 50 ° C.) were added over 18 minutes.

After washing with water and desalting by a conventional method, 22 g of lime-treated ossein gelatin was added to adjust pH to 6.2 and pAg to 7.8, and sodium thiosulfate and 4-hydroxy- were added.
6-Methyl-1,3,3a, 7-tetrazaindene and chloroauric acid were added and optimal chemistry was performed at 60 ° C, and then an antifoggant (1) was added and then cooled. Thus, monodisperse cubic silver chlorobromide emulsion 6 having an average grain size of 0.50 μm
35 g were obtained.

[0113]

[Chemical 30]

[0114]

[Table 3]

Photosensitive Silver Halide Emulsion (3) [For Green Sensitive Emulsion Layer] Well-stirred aqueous gelatin solution (20 g of gelatin in 690 ml of water, 0.5 g of potassium bromide and 4 parts of sodium chloride).
g and 15 mg of the chemical (A) were added and kept at 48 ° C.), the solutions (I) and (II) in Table 4 were simultaneously added at an equal flow rate for 8 minutes. After 10 minutes, solution (III) and solution (IV) in Table 4 were simultaneously added at the same flow rate for 32 minutes. In addition, 1 minute after the addition of the solutions (III) and (IV), an aqueous solution of a gelatin dispersion of the dye (2.5 g of gelatin and 250 mg of the dye (d) in 100 ml of water and kept at 45 ° C.) was put together. Was added.

After washing with water and desalting by a conventional method, 20 g of lime-treated ossein gelatin was added to adjust the pH to 6.0 and pAg to 7.6, and sodium thiosulfate and 4-hydroxy- were added.
6-Methyl-1,3,3a, 7-tetrazaindene and chloroauric acid were added for optimum chemical sensitization at 68 ° C., antifoggant (1) was added, and then the mixture was cooled. Thus, a monodisperse cubic silver chlorobromide emulsion 63 having an average grain size of 0.27 μm was obtained.
5 g was obtained.

[0117]

[Table 4]

[0118]

[Chemical 31]

Photosensitive Silver Halide Emulsion (4) [For Green Sensitive Emulsion Layer] Well-stirred aqueous gelatin solution (20 g of gelatin, 0.3 g of potassium bromide and 6 g of sodium chloride in 700 ml of water).
solution (I) and solution (II) shown in Table 5 were simultaneously added to the above solution at a constant flow rate for 20 minutes. After 10 minutes, solution (III) and solution (IV) in Table 5 were further added simultaneously at an equal flow rate for 20 minutes. Also (III), (IV)
One minute after the end of the addition of the solution, an aqueous solution of a gelatin dispersion of a dye (1.8 g of gelatin in 95 ml of water, 180 mg of dye (d))
Which was kept at 45 ° C.) was added all at once.

After washing with water and desalting by a conventional method, 20 g of lime-treated ossein gelatin was added to adjust pH to 6.0 and pAg to 7.6, and sodium thiosulfate and 4-hydroxy- were added.
6-Methyl-1,3,3a, 7-tetrazaindene and chloroauric acid were added for optimum chemical sensitization at 68 ° C, and then an antifoggant (1) was added, followed by cooling. Thus, 635 g of a monodisperse cubic silver chlorobromide emulsion having an average grain size of 0.45 μm was obtained.

[0121]

[Table 5]

Photosensitive Silver Halide Emulsion (5) [For Blue Sensitive Emulsion Layer] Well stirred gelatin aqueous solution (gelatin 20 g, potassium bromide 0.5 g, sodium chloride 5 in 690 ml of water).
solution (I) and solution (II) shown in Table 6 were simultaneously added at a constant flow rate for 8 minutes. After 10 minutes, solution (III) and solution (IV) in Table 6 were added simultaneously at the same flow rate for 32 minutes. One minute after the addition of solutions (III) and (IV) was completed, 220 mg of dye (e) and 110 mg of dye (f) were added to an aqueous solution of dye (in 95 ml of water and 5 ml of methanol).
Which was kept at 45 ° C.) was added all at once.

After washing with water and desalting by a conventional method, 22 g of lime-treated ossein gelatin was added to adjust the pH to 6.0 and pAg to 7.8, and sodium thiosulfate and 4-hydroxy- were added.
6-Methyl-1,3,3a, 7-tetrazaindene was added for optimum chemical sensitization at 68 ° C, and then an antifoggant (1) was added, followed by cooling. Thus, a monodisperse cubic silver chlorobromide emulsion 635 having an average grain size of 0.30 μm
g was obtained.

[0124]

[Table 6]

[0125]

[Chemical 32]

Photosensitive Silver Halide Emulsion (6) [For blue sensitive emulsion layer] Well stirred gelatin aqueous solution (gelatin 20 g, potassium bromide 0.3 g, sodium chloride 9 in 695 ml of water).
g and 15 mg of the chemical (A) were added and kept at 63 ° C.), the solutions (I) and (II) in Table 7 were simultaneously added at an equal flow rate for 10 minutes. After 10 minutes, solution (III) and solution (IV) shown in Table 7 were added simultaneously at the same flow rate for 30 minutes. Also (III), (IV)
One minute after the end of the addition of the solution, an aqueous solution of the dye (in 66 ml of water and 4 ml of methanol, 155 mg of the dye (e) and 78 mg of the dye (f))
Which was kept at 60 ° C.) was added all at once.

After washing with water and desalting by a conventional method, 22 g of lime-treated ossein gelatin was added to adjust the pH to 6.0 and pAg to 7.8, and sodium thiosulfate and 4-hydroxy- were added.
6-Methyl-1,3,3a, 7-tetrazaindene and chloroauric acid were added for optimum chemical sensitization at 68 ° C, and then an antifoggant (1) was added, followed by cooling. Thus, 635 g of a monodisperse cubic silver chlorobromide emulsion having an average grain size of 0.55 μm was obtained.

[0128]

[Table 7]

Using the above dispersions and emulsions, coating solutions were prepared as follows.

First Layer (Red Sensitive Emulsion Layer) 648.5 g of the photosensitive silver halide emulsion (1), 351.5 g of the photosensitive silver halide emulsion (2), and 1050 g of a 16% aqueous solution of lime-processed gelatin, 40 g each. Melted at ° C and mixed. Further, 4563 g of a gelatin dispersion of a cyan dye-providing compound was dissolved at 45 ° C and added. Next, 83.6 ml of 5% aqueous solution of water-soluble polymer (1)
In addition, a coating liquid for the first layer was prepared. At 40 ° C, the viscosity was 85 centipoise and the pH was 6.3.

[0131]

[Chemical 33]

2nd and 6th layers (intermediate layer) To a 1000% 16% aqueous solution of lime-processed gelatin was added a solution of 1845 g of a dispersion of zinc hydroxide dissolved at 45 ° C, and 41 ml of a 25% aqueous solution of dextran, electron-donated. 748 g of body gelatin dispersion dissolved at 45 ° C, 791 ml of dye trapping agent dispersion, 5 parts of water-soluble polymer (1)
% Aqueous solution (20 ml) was added to prepare coating solutions for the second and sixth layers. Viscosity is 80 centipoise at 40 ° C, pH
Was 7.9.

Third Layer (Green-Sensitive Emulsion Layer) 710.0 g of the photosensitive silver halide emulsion (3) and 290.0 g of the photosensitive silver halide emulsion (4) were each added at 40 ° C.
Dissolved in and mixed. Further, 2511 g of a gelatin dispersion of a magenta dye-donor compound was dissolved at 45 ° C and added. Next, 9.6 ml of a 9.8% aqueous solution of sulfuric acid and 70.5 ml of a 5% aqueous solution of the water-soluble polymer (1) were added to prepare a coating solution for the third layer. At 40 ° C, the viscosity was 75 centipoise and the pH was 5.4.

Fourth layer (intermediate layer) A solution prepared by dissolving 317 g of the dispersion of the electron transfer agent at 45 ° C. in 1000 g of a 16% aqueous solution of lime-processed gelatin was added, and 3777 ml of ion-exchanged water and a gelatin dispersion of the electron donor. 962 g dissolved at 45 ° C., 61 ml of 25% aqueous dextran solution, 19.1 aqueous 9.8% sulfuric acid solution
ml and 138 ml of a 5% aqueous solution of the water-soluble polymer (1) were added to prepare a coating solution for the fourth layer. Viscosity is 8 at 40 ° C
It was 5 centipoise and pH was 5.3.

Fifth layer (blue-sensitive emulsion layer) 765.2 g of the light-sensitive silver halide emulsion (5) and 234.8 g of the light-sensitive silver halide emulsion (6) at 40 ° C., respectively.
Dissolved in and mixed. Further, 2064 g of a gelatin dispersion of a yellow dye-providing compound was dissolved at 45 ° C and added. Next, 11.4 ml of a 9.8% aqueous solution of sulfuric acid and 51.1 ml of a 5% aqueous solution of the water-soluble polymer (1) were added to prepare a coating solution for the fifth layer. At 40 ° C, the viscosity was 70 centipoise and the pH was 5.2.

Seventh Layer (Protective Layer) A gelatin dispersion of a matting agent (18 g of polymethyl methacrylate having an average particle diameter of 3.5 μm dispersed in a 5% aqueous solution of acid-treated gelatin) in 1000 g of a 16% aqueous solution of acid-treated gelatin. ) 38 g, ion-exchanged water 1640 ml, 70% methanol solution 1 of the following anionic surfactant (1)
0.6 ml, 20.6 ml of a 5% methanol solution of the following fluorine-containing surfactant (1), 2.5 ml of a 32% aqueous solution of NaOH
Was added to obtain a coating liquid for the seventh layer. At 40 ° C., the viscosity was 14 centipoise and the pH was 8.7.

[0137]

[Chemical 34]

[0138]

[Chemical 35]

Using the above coating solution, the first coating was applied on the support having the constitution shown in Table 8 below so that the wet film thickness shown in Table 9 was obtained.
The coating liquid for the 7th layer was applied from the layer.

[0140]

[Table 8]

[0141]

[Table 9]

During the feeding of the coating solution, a 1.6% aqueous solution of the following hardening agent (1) was added to the fourth layer by a mixing system immediately before the coating amount was 2.39 ml / m ² . . That is, a mixing tank equipped with stirring blades was provided at a position immediately before the coating of the liquid feeding system for the fourth layer, and the coating solution and the aqueous solution of the hardener were combined on the upstream side of the mixing tank for coating.

[0143]

[Chemical 36]

Next, the coated light-sensitive material is cooled in an atmosphere of 0 ° C. for 5 seconds, and 20% of the total water content is dried under the condition that the film surface temperature is 15 ° C., and then the film surface temperature is 17 ° C. Drying up to 40% of the total water content, film surface temperature 1 up to 95% remaining
The photosensitive material 101 was prepared by controlling the temperature to 8 ° C to 22 ° C and drying.

Next, in the method for preparing the dispersion of the dye trapping agent, the light-sensitive material 101 except that the following anionic surfactant (2) was used in place of the anionic surfactant (1)
Except for using the light-sensitive material 102 and the following anionic surfactant (3) in exactly the same manner as
A light-sensitive material 103 was prepared in exactly the same manner as.

[0146]

[Chemical 37]

[0147]

[Chemical 38]

Next, as comparative examples, photosensitive materials 104 to 108 were prepared in exactly the same manner as the photosensitive material 101 except that the dispersion of the dye trapping agent was added as shown in Table 10 below.

[0149]

[Table 10]

Next, how to make the image receiving material will be described. An image receiving material R101 having a constitution as shown in Table 11 was prepared.

[0151]

[Table 11]

[0152]

[Table 12]

[0153]

[Chemical Formula 39]

[0154]

[Chemical 40]

[0155]

[Chemical 41]

[0156]

[Chemical 42]

[0157]

[Chemical 43]

[0158]

[Chemical 44]

[0159]

[Chemical formula 45]

[0160]

[Chemical formula 46]

[0161]

[Chemical 47]

Using the photosensitive materials 101 to 108 and the image receiving material R101 described above, an instant print system manufactured by Fuji Photo Film Co., Ltd., Pictrostat 200 (P
S200) was processed using the apparatus. That is, the original image [Y, M, Cy, and gray wedges whose densities are continuously changing are scanned and exposed through a slit, and the exposed photosensitive material
After immersing in water kept at 0 ° C. for 2.5 seconds, it was squeezed with a roller and immediately superposed so that the image receiving material and the film surface were in contact with each other. Then, using a heat drum whose temperature has been adjusted so that the water-absorbed film surface temperature is 80 ° C., the photosensitive material is peeled off from the image receiving material by heating for 17 seconds, and a clear color image corresponding to the original image is obtained on the image receiving material. Was given.

Then, the photosensitive materials 101 to 108 are treated at 50 ° C. 70.
The same treatment was carried out after storing for 7 days under the condition of% RH.

Next, Y (yellow) and M of the obtained image
Table 13 shows the results of measuring Dmax and Dmin of (magenta) and Cy (cyan) with an X light densitometer.

[0165]

[Table 13]

From the above results, the light-sensitive materials 101, 102 of the present invention were compared with the light-sensitive materials 105, 107, 108 of Comparative Examples in which the dye trapping agent of the present invention was not contained in the upper layer above the layer containing the dye-donating compound of the present invention. , 103 is yellow Dmi
It can be seen that n is low. In addition, photosensitive materials 104 and 10 of Comparative Examples containing an electron transfer agent and a dye trapping agent in the same layer.
5, 106, and 107, the photosensitive material 101 of the present invention,
It can be seen that 102 and 103 have little increase in Dmin after aging at 50 ° C. and 70% for 7 days. Therefore, the light-sensitive material of the present invention is Dmi
It can be said that n is low and the stability with time before treatment is excellent.

In the examples given here, the difference in Dmin between the light-sensitive material of the present invention and the comparative example is 0.01 to 0.03.
Although it is a very slight difference in terms of numerical value, 0.01 at Dmin
The difference between is a very large difference in practical use, and the appearance of the finished image is completely different. Therefore, the effect of the present invention is great.

Example 2

In the light-sensitive material 101 of Example 1, immediately after coating, it was cooled at 0 ° C. for 5 seconds, and then in the order shown in Table 14 below, that is, 0 to 20% of the total water content, 20 to 40.
Photosensitive materials 201 to 205 were prepared in exactly the same manner as the photosensitive material 101 except that the drying conditions were controlled in the order of%, to 95%.

[0170]

[Table 14]

Using the above light-sensitive materials 201 to 205 and the image receiving material R101 described in Example 1, the same processing as in Example 1 was performed. The results are shown in Table 15.

[0172]

[Table 15]

From the above results, in the comparative example in which the first half of the drying was carried out in the state where the film surface temperature was high, the increase in Dmin after 50% aging of 70% was larger than that of the light-sensitive material of the present invention. Therefore, it can be seen that the light-sensitive material of the present invention obtained by drying the first half of drying at a film surface temperature of 17 ° C. or lower has a low Dmin and is excellent in stability over time before processing.

Claims (2)

[Claims] 1. A support comprising at least a photosensitive silver halide, a diffusion-resistant reducing agent, an electron transfer agent, a dye donating compound represented by the following general formula (I) and a general formula (II) below. A heat-developable color light-sensitive material having a dye trapping agent represented, wherein the dye trapping agent is an upper layer than a layer containing the dye donating compound, and contains the electron transfer agent. A photothermographic material which is contained in a layer different from the layer. [Chemical 1] In the formula, EAG represents a group that receives an electron from a reducing substance. N and O represent a nitrogen atom and an oxygen atom, respectively, and this single bond is cleaved after EAG receives an electron. D ² represents —CO— or —SO ₂ —, and D ¹
Represents an atomic group having the property of forming a heterocycle containing N, O and D ² and cleaving the D ¹ -G bond following the cleavage of the N—O bond. G is a linking group connecting D ¹ and X,
It represents a group having a property that the D ¹ -G bond is cleaved after cleavage of the N—O bond, and G itself may have a timing ability for further decomposition. Dye represents a diffusible dye group, X represents a benzene ring, a naphthalene ring, and a nitrogen atom.
Or a 5- to 8-membered heterocycle containing 2 or 2 carbon atoms
To 10 in the form of a chain or cyclic alkyl group, which may have a substituent, may be condensed with another saturated or unsaturated ring, and may have a part of carbon atoms constituting the same. It may be replaced with an oxygen atom or a sulfur atom. L represents a linking group. m represents a natural number of 1 or more and n is 2 or more, and n L- (Dye) _m may be the same or different, and when m is 2 or more, m Dyes are the same. Or they may be different. [Chemical 2] In the formula, [X] represents a repeating unit of a monomer having a quaternary ammonium group. [Y] represents a repeating unit of a monomer having no quaternary ammonium group. [Z] is a counter anion of [X] and has the following general formula (III)
It is represented by. k is 2 to 100 mol% and p is 0 to 98 mol%. [Chemical 3] In the formula, R represents a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group. J represents a divalent linking group,
D ⁻ represents an anionic dissociative group. m represents 0 or 1. 2. When the heat-developable color photosensitive material according to claim 1 is applied and dried, the film surface temperature is kept at 17 ° C. or lower until at least 40% of the total water content is dried. A method for producing a heat-developable color light-sensitive material.