JPH0915805A - Heat developing color photosensitive material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photosensitive material in which the resulting image is hardly influenced by the fluctuation of processing conditions, and the deterioration in raw storage is minimized by containing a specified compound as electron donor. SOLUTION: This photosensitive material contains a compound represented by the formula I as electron donor, and also contains a compound represented by the formula II. In the formulae, A represents a hydroxy group or a group providing the hydroxy group under alkali condition, which may be the same or different. R<1> -R<4> , which may be the same or different, each represent hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group, an aryl group, a carbamoyl group, a sulfonyl group or the like. R<1> and R<2> , R<3> and R<4> may be mutually bonded to form a ring, respectively. αrepresents a divalent connecting group, and (n) represents 0 or 1. M represents a hydroxy group or a group providing the hydroxy group under alkali conditions, R<5> represents an alkyl group or aryl group, and R<6> , R<7> each represent hydrogen atom, a halogen atom, an alkyl group, an aryl group, a carbamoyl group or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-developable color light-sensitive material, and more particularly to a heat-development color light-sensitive material capable of stably obtaining a good image against variations in processing conditions.

[0002]

2. Description of the Related Art Photothermographic materials are known in the art. For details of the photothermographic materials and processes thereof, see, for example, "Basics of Photographic Engineering", Non-silver salt photography, ed. ２５255.

[0003] Many methods have been proposed for obtaining a color image by thermal development. For example, U.S. Patent Nos. 3,531,286, 3,761,270, and 40212
No. 40, Belgian Patent No. 802,519, Research Disclosure Magazine (hereinafter abbreviated as RD), September 31, 1975, pp. 31-32, etc., propose a method of forming a color image by combining an oxidized form of a developing agent with a coupler. Have been.

However, since the photothermographic material for obtaining the above-mentioned color image is a non-fixing type, silver halide remains after the image is formed, and the white background is gradually colored when exposed to strong light or stored for a long time. Is causing a serious problem. Furthermore, the above-mentioned methods generally have the disadvantage that development takes a relatively long time, and the resulting image can only have high fog and low image density.

In order to improve these drawbacks, a method has been proposed in which a diffusible dye is formed or released imagewise by heating, and the diffusible dye is transferred to an image receiving material having a mordant with a solvent such as water. (US Patent No. 45
No. 6626, No. 4483914, No. 4503137
No. 4,559,920; JP-A-59-165054).

In the above method, the developing temperature is still high, and the temporal stability of the photosensitive material is not sufficient. Thus, a method of heating and developing in the presence of a base or a base precursor and a very small amount of water to transfer the dye, thereby accelerating the development, lowering the developing temperature, and simplifying the processing is disclosed in Japanese Patent Application Laid-Open No. Sho 59-2.
No. 18443, No. 61-238056, European Patent 21
No. 0660A2.

Many methods have been proposed for obtaining a positive color image by thermal development. Among them, in U.S. Pat. No. 4,559,290, a so-called DRR compound is present in the presence of an oxidation type compound having no color image releasing ability and a reducing agent or a precursor thereof, and the reducing agent is added depending on the exposure amount of silver halide by heat development. A method has been proposed in which the diffusible dye is released by oxidizing the dye and reducing it with a reducing agent remaining without being oxidized. Further, U.S. Pat. No. 4,783,396 and Japanese Patent Laid-Open No. 64-13546 disclose an N-X bond (X represents an oxygen atom, a nitrogen atom or a sulfur atom) as a diffusion resistant compound that releases a diffusible dye by a similar mechanism. The heat-developable color light-sensitive material using a diffusion-resistant compound which releases a diffusible dye by reductive cleavage of (. This method comprises at least a photosensitive silver halide, a binder, an electron donor and / or its precursor (which is preferably diffusion resistant) on a support, and itself which is reduced to release a diffusible dye. A heat-developable color light-sensitive material having a multilayer structure having a diffusion-resistant compound is heated after exposure to oxidize an electron donor according to the amount of silver halide, and the above-mentioned reducible dye-donating compound is not oxidized. The residual electron donor is reduced to release a diffusible dye, which is transferred to a dye fixing material having a mordant to form a positive color image.

In the above-cited patent specifications, a compound which contains a sparingly soluble metal compound in a light-sensitive material and which releases a base by a dye-forming reaction between the sparingly soluble metal compound and water as a medium in a dye fixing material ( (Hereinafter referred to as a "fat-forming compound"), the light-sensitive material is exposed to light, then water is added thereto, and the mixture is heated with the dye-fixing material to form an image.

In such an image forming method, as a method of applying water, a method of forcibly supplying a fixed amount of water from the outside or a hydrophilic polymer such as gelatin as a binder, and a fixed amount of water is used according to its water absorption property. In many cases, the method of applying water is adopted. Of these water application methods,
The latter method is generally adopted from the viewpoint of simplification of the apparatus and uniformity of water application. However, in the case of using this water application method, when the water temperature or the like changes, the water absorption property of the hydrophilic polymer also changes, and the amount of applied water itself changes. Under such conditions, the concentration of the base released by the above-mentioned reaction forming reaction may fluctuate, and the resulting image, especially the white background, may fluctuate. In the above-mentioned positive-working heat-developable color light-sensitive material, it is preferable to accelerate silver development in the exposed area and quickly consume the electron donor in order to reduce the fluctuation of the white background. Therefore, in many cases, a method of using a diffusible electron transfer agent to reduce exposed silver halide with this electron transfer agent and oxidizing the electron donor with an oxidized form of the electron transfer agent is often used. However, even if such a method is used, it may not be possible to obtain a sufficient white background due to a change in the condition of applying water. On the other hand, as the yellow dye-donating compound used in the image forming method as described above, the light fastness and the density of the obtained image change in a very short time when the image is irradiated with light, especially in the multicolor portion. JP-A-6-301181 discloses a novel compound effective for solving the phenomenon that the colors appear different. Many of these yellow dye-donating compounds generally exhibit sharp absorption also from the viewpoint of hue, and are advantageous in color reproduction, but when these compounds are used, the image quality under the condition of imparting water, particularly, It was found that the effect on the white background was greater.

[0010]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a heat-developable color light-sensitive material in which an image obtained by a change in processing conditions, particularly water application conditions, is not easily affected. Another object of the present invention is to provide a heat-developable color light-sensitive material which has less variation in the obtained image when the heat-developable color light-sensitive material is left for a long period of time or under more severe conditions.

[0011]

As a result of research to solve the above-mentioned object, the present inventor has found that the following light-sensitive material achieves the object.

In a heat-developable color light-sensitive material containing at least a photosensitive silver halide, a binder, an electron donor and a dye-donating compound on a support, the compound represented by the following general formula (1) as the electron donor. A heat-developable color light-sensitive material containing at least one of the above and further containing a compound represented by the general formula (2). General formula (1)

[0013]

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In the formula, A represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions, and they may be the same or different. R ^{1 to} R ⁴ may be the same or different and each is a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an aryl group, a carbamoyl group, a sulfamoyl group, a sulfonyl group, an acyl group, an alkoxycarbonyl group, Aryloxycarbonyl group, alkoxy group, amino group, acylamino group, aryloxy group, sulfonylamino group, alkylthio group,
It represents an arylthio group, a sulfo group, or a carboxyl group.
R ¹ and R ² , and R ³ and R ⁴ may combine with each other to form a ring. α represents a divalent linking group, and n represents 0 or 1.

[0015]

[Chemical 6]

In the formula, M represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions, R ⁵ represents an alkyl group or an aryl group, R ⁶ and R ⁷ represent a hydrogen atom, a halogen atom, an alkyl group, It represents an aryl group, a carbamoyl group, a sulfamoyl group, or an acyl group.
In the present invention, it is unpredictable that the use of the compound represented by the general formula (1) and the compound represented by the general formula (2) can reduce the influence of fluctuations in water application conditions on image quality.

The general formula (1) which can be used in the present invention is as follows.
The compound represented by will be described in more detail. In the formula, A represents a hydroxy group or a group that gives a hydroxy group under alkaline conditions. Preferred examples of A include a hydroxy group, an acyloxy group, an alkylsulfonyloxy group, an arylsulfonyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, a dialkylphosphoryloxy group, an arylphosphoryloxy group and a dialkylamino group. To be A may be the same or different. R ^{1 to} R ⁴ may be the same or different and each is a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an aryl group,
Carbamoyl group, sulfamoyl group, sulfonyl group, acyl group, alkoxycarbonyl group, aryloxycarbonyl group, alkoxy group, amino group, acylamino group,
It represents an aryloxy group, a sulfonylamino group, an alkylthio group, an arylthio group, a sulfo group or a carboxyl group. R ¹ and R ² , and R ³ and R ⁴ may combine with each other to form a ring. In the above, groups other than hydrogen atom, halogen atom, hydroxy group, sulfo group, and carboxyl group preferably have 1 to 30 carbon atoms, and include those having a substituent.

In the general formula (1), α represents a divalent linking group, preferably an alkylene group, an arylene group or --NH.
It is a CO-arylene-CONH-group. α may have a substituent, and examples thereof include an alkyl group and an aryl group.

The compound represented by the general formula (1) is preferably diffusion resistant, and therefore, it is preferable that any one of R ^{1 to} R ⁴ and α has 8 or more carbon atoms. Specific examples of the compound represented by formula (1) are shown below, but the invention is not limited thereto.

[0020]

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[0021]

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[0022]

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[0023]

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[0024]

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In the present invention, the compound represented by the general formula (1) is preferably used in the same layer as the dye-donor compound described later, and particularly preferably used as the same emulsion as the dye-donor compound. The compound represented by the general formula (1) is 50 to 20 relative to the dye-donor compound described below.
It is preferably used in the range of 0 mol%, 50 to 1
More preferably, it is used in the range of 00 mol%.

Next, the compound represented by the general formula (2) will be described in detail. In the general formula (2), M represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions.
Preferred examples of M include a hydroxy group, an acyloxy group, an alkylsulfonyloxy group, an arylsulfonyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, a dialkylphosphoryloxy group, an arylphosphoryloxy group and a dialkylamino group. To be R ⁵ represents an alkyl group or an aryl group. These include those having a substituent. The alkyl group may be linear, branched or cyclic and preferably has 1 to 32 carbon atoms. The aryl group preferably has a benzene ring or a naphthalene ring, and particularly has 6 carbon atoms.
~ 32. Substituents allowed for R ⁵ include aliphatic groups, aryl groups, heterocyclic groups, aliphatic oxy groups, aromatic oxy groups, acyl groups, ester groups, amide groups, imide groups, aliphatic / aryl or hetero groups. A ring sulfonyl group,
Examples thereof include an aliphatic / aryl or heterocyclic thio group, a hydroxyl group, a cyano group, a carboxyl group, a sulfo group and a nitro group. R ⁶ and R ⁷ are hydrogen atom, halogen atom, alkyl group, aryl group, carbamoyl group,
It represents a sulfamoyl group or an acyl group. As the alkyl group and the aryl group, those described for R ⁵ are preferable. As the carbamoyl group, sulfamoyl group and acyl group, those having an alkyl group having up to 30 carbon atoms, an alkoxy group, an aryl group, an aryloxy group or an aralkyl group are preferable. Groups other than the hydrogen atom and the halogen atom of R ⁶ and R ⁷ include those having a substituent. The substituents permissible for R ⁶ and R ⁷ include the same groups as those mentioned for R ⁵ .

In the present invention, it is preferable that the total number of carbon atoms of R ⁵ , R ⁶ and R ⁷ is 8 or more, and that it is diffusion resistant. Further, it is particularly preferable that either R ⁶ or R ⁷ is a substituted or unsubstituted carbamoyl group, and particularly preferably, this group is substituted at the ortho position with respect to M. Specific examples of the compound represented by the general formula (2) are shown below, but the present invention is not limited thereto.

[0028]

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[0029]

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[0030]

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[0031]

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[0032]

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[0033]

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[0034]

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[0035]

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In the present invention, the compound represented by the general formula (2) is preferably used in the same layer as the compound represented by the general formula (1), and further the compound represented by the general formula (2) is It is preferably contained in the same emulsion as the compound represented by the general formula (1). In the present invention, the compound represented by the general formula (2) is preferably used in the range of 1 to 100 mol% with respect to the compound represented by the general formula (1), and is used in the range of 1 to 50 mol%. More preferably.

The heat-developable color light-sensitive material of the present invention basically contains a photosensitive silver halide, a binder, an electron donor and a dye-donating compound on a support, and further, if necessary, an organic metal. A hydrochloric acid agent and the like can be included. These components are often added to the same layer, but may be added separately to another layer if they can react. For example, the presence of a colored reducible dye-providing compound in the lower layer of a silver halide emulsion prevents a decrease in sensitivity.

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, a combination of three layers of a blue layer, a green layer, and a red layer, a green layer, a red layer,
There is a combination of three layers of infrared sensitive layers. The order of arrangement of the respective photosensitive layers is arbitrary, and various arrangement orders known for ordinary type color photosensitive materials can be adopted. Further, each of these photosensitive layers may be divided into two or more layers as necessary, as described in JP-A-1-252954. Various auxiliary layers such as a protective layer, an undercoat layer, an intermediate layer, a yellow filter layer, an antihalation layer, and a back layer can be provided on the photothermographic material. Specifically, an undercoat layer as described in US Pat. No. 5,051,335, JP-A-1
No. 167,838, an intermediate layer having a solid pigment as described in JP-A No. 61-20,943, JP-A No. 1-120,
553, 5-34,884, 2-64,634.
An intermediate layer having a reducing agent or a DIR compound,
US Pat. Nos. 5,017,454 and 5,139,91
No. 9, an intermediate layer having an electron transfer agent as described in JP-A-2-235,044, a protective layer having a reducing agent as described in JP-A-4-249,245, or a layer combining these. be able to. The protective layer is preferably divided into two layers. In the case of photothermographic materials, it is often necessary to add various additives to the protective layer, so that the film strength is weakened and the film is easily scratched. Therefore, it is preferable to divide the protective layer into two layers and to make the uppermost layer a binder-rich composition while keeping the amount of additives (particularly oil-soluble components) added to the binder low from the viewpoint of increasing the film strength. When the support is polyethylene laminated paper containing a white pigment such as titanium oxide, the back layer preferably has an antistatic function and a surface resistivity of 10 ¹² Ω · cm or less.

The silver halide emulsion (emulsion containing a photosensitive silver halide) of the present invention may have various shapes. Examples thereof include regular particles having regular crystals such as cubes, octahedra and tetradecahedrons, tabular grains, spherical grains, grains having irregular crystal forms such as potato grains, etc. Examples of the photosensitive silver halide which can be used in each photosensitive layer of the present invention include silver chloride, silver bromide, silver iodobromide, silver chlorobromide, silver chloroiodide and silver chloroiodobromide. Either is fine. The silver halide emulsion may be 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 light fogging. Further, a so-called core-shell emulsion having a different phase between the inside of the grain and the grain surface layer may be used. The silver halide emulsion may be monodispersed or polydispersed, or a mixture of monodispersed emulsions may be used. In particular, a method of mixing emulsions having different sensitivities for adjusting the gradation (for example, JP-A-1-
No. 167744) is preferably used. The particle size is preferably 0.1 to 2 μm, particularly preferably 0.2 to 1.5 μm. The photosensitive silver halide emulsion used in the present invention is preferably a core-shell emulsion. Monodisperse emulsions having a coefficient of variation of 20% or less described in JP-A-3-110555 are preferred. Specifically, U.S. Pat. Nos. 4,500,626, column 50, 4,628,021, and Research Disclosure Magazine (hereinafter abbreviated as RD) 36544 (1)
994), JP-A-62-253159, JP-A-3-
No. 110555, No. 2-236546, No. 1-167
Nos. 743, 6-332, 093, 6-301, 1
Nos. 29, 6-230, 491, 6-194, 76
8, 6-194,766, European Patent 618,48
Any of the silver halide emulsions described in No. 4A and 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 washing method performed by gelling gelatin may be used, and inorganic salts composed of polyvalent anions (eg, sodium sulfate), anionic surfactants, anionic polymers (eg, polystyrenesulfonic acid) Sodium) or a precipitation method using a gelatin derivative (for example, aliphatic acylated gelatin, aromatic acylated gelatin, aromatic carbamoylated gelatin, etc.). 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, JP-A-2-236542, JP-A-1-116637, and JP-A-6-116637
No. 258,755 and No. 6-235,992, Japanese Patent Application No. 4-
The emulsions described in No. 126629 are preferably used.

In the step of forming grains of the light-sensitive silver halide emulsion of the present invention, rhodan salt, ammonia, 4-substituted thioether compound or JP-B No. 47-1 is used as a silver halide solvent.
Organic thioether derivatives described in 1386 or sulfur-containing compounds described in JP-A-53-144319 can be used.

For other conditions, see P. Graphide, "Shimmie Physics Photographic".
[Paul Montell, 1967], GF Duffin, "Photographic Emulsion Chemistry" [The Focal Press, 1966]
Year ", Bier Zerikman et al.," Making and Coating Photographic Emulsion "(published by The Focal Press, 1964). That is, any of an acidic method, a neutral method, and an ammonia method may be used, and a method of reacting a soluble silver salt and a soluble halide may be any of a one-sided mixing method, a double-sided mixing method, and a combination thereof. In order to obtain a monodisperse emulsion, a simultaneous mixing method is preferably used. A back mixing method in which the grains are formed in the presence of excess silver ions can also be used. As one type of the double jet method, a so-called controlled double jet method in which the pAg in a liquid phase in which silver halide is formed is kept constant can be used.

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-55-142329 and JP-A-5-142329).
No. 5-158124, U.S. Pat. No. 3,650,575).
Further, the method of stirring the reaction solution may be any known stirring method. The temperature of the reaction solution during the formation of silver halide grains,
The pH may be set as desired for any purpose. The preferred pH range is 2.2 to 7.0, more preferably 2.
It is 5 to 6.0.

The photosensitive silver halide emulsion is usually a chemically sensitized silver halide emulsion. The chemical sensitization of the light-sensitive silver halide emulsion of the present invention may be performed by a known method such as a sulfur sensitization method, a reduction sensitization method, a noble metal sensitization method and a selenium sensitization method alone or in combination with an emulsion for a conventional light-sensitive material. (For example, JP-A-3-110555 and Japanese Patent Application No. 4-75).
798). These chemical sensitizations can also be carried out in the presence of a nitrogen-containing heterocyclic compound (JP-A-62-2531).
59). The pH at the time of chemical sensitization is preferably 5.3 to 1
0.5, more preferably 5.5 to 8.5, pAg
Is preferably 6.0 to 10.5, more preferably 6.8.
９9.0. The coating amount of the photosensitive silver halide used in the present invention is in the range of 1 mg to 10 g / m ² in terms of silver.

Additives used in such a step and known photographic additives usable in the present invention are the above-mentioned RDN.
o. 36,544, the same No. 18,716 and the same No.
307 and 105, and the corresponding parts are summarized in the table below. Type of additive RD36544 RD18716 RD307105 1. Chemical sensitizers, pages 510-511, page 648, right column, page 866. 2. Sensitivity increasing agent, page 648, right column 3. Spectral sensitizers 511-514 page 648 right column 866-868 supersensitizer 頁 649 right column 4. Brightener 514 page 648 right column 868 page Antifoggants 515 to 517 pages 649 right column 868 to 870 stabilizers 6. 6. Light absorbers 517 to 518 649 right column 873 filter dyes 650 left column Ultraviolet absorbers 7. Dye image stabilizer page 527 page 650 left column page 872 8. Hardener 508 pages 651 left column 874-875 pages Binder page 507 page 651 left column pages 873 to 874 10. Plasticizer, page 519, page 650, right column, page 876, lubricant 11. Coating aid page 519 page 650 right column pages 875-876 surface active agent 12. Static page 520 page 650 right column 876-877 page inhibitor 13. Matting agent 521 pages 878-879

Gelatin is advantageously used as a protective colloid used in the preparation of the emulsion of the present invention and as a binder for other constituent layers of the light-sensitive material and dye fixing element, but other hydrophilic binders are also used. be able to. Examples thereof include the above-mentioned Research Disclosure and JP-A-64-13546, page (71)-
(75). Specifically, transparent or translucent hydrophilic binders are preferred, for example, gelatin, proteins or cellulose derivatives such as gelatin derivatives, starch, gum arabic, dextran, natural compounds such as polysaccharides such as pullulan, polyvinyl alcohol, Examples include polyvinylpyrrolidone, acrylamide polymers, and other synthetic polymer compounds. Further, a superabsorbent polymer described in JP-A-62-245260, that is, a homopolymer of a vinyl monomer having —COOM or —SO ₃ M (M is a hydrogen atom or an alkali metal), or those vinyl monomers or other vinyl monomers. (For example, sodium methacrylate, ammonium methacrylate, Sumikagel L-5H manufactured by Sumitomo Chemical Co., Ltd.) may also be used. These binders can be used in combination of two or more kinds. In particular, a combination of gelatin and the above binder is preferable.Depending on various purposes, lime-processed gelatin, acid-processed gelatin, demineralized gelatin with a reduced content of calcium, etc., and oxidized to reduce methionine residues according to various purposes. It may be selected from gelatin and the like, and it is also preferable to use them in combination.

In the case of a system in which a small amount of water is supplied for thermal development, by using the above superabsorbent polymer,
It becomes possible to absorb water quickly. Further, when a superabsorbent polymer, polyvinyl alcohol, or a polysaccharide is used in the dye fixing layer or its protective layer as described in Japanese Patent Application No. 5-181,413, the dye may be removed from the dye fixing element after transfer. It is possible to prevent the retransfer to the thing. In the present invention, the coating amount of the binder is preferably 20 g or less per 1 m ² , particularly 10 g or less, and further 7 g
The following is appropriate.

In the present invention, an organic metal salt may be used as an oxidizing agent together with the photosensitive silver halide. Among such organic metal salts, an organic silver salt is particularly preferably used. Organic compounds that can be used to form the above-described organic silver salt oxidizing agents include US Pat.
There are benzotriazoles, fatty acids and other compounds described in No. 0,626, columns 52 to 53 and the like. In addition, JP
Silver salts of carboxylic acids having an alkynyl group, such as silver phenylpropiolate described in JP-A-113235;
The acetylene silver described in No. 1-249044 is also useful.
Two or more organic silver salts may be used in combination. The above organic silver salts can be used in an amount of 0.01 to 10 mol, preferably 0.01 to 1 mol, per mol of the photosensitive silver halide. The total coating amount of the photosensitive silver halide and the organic silver salt is suitably from 50 mg to 10 g / m ² in terms of silver.

Various antifoggants or photographic stabilizers can be used in the present invention. Examples thereof include azoles and azaindenes described in RD17643 (1978), pp. 24-25, and JP-A-59-1684.
No. 42 nitrogen-containing carboxylic acids and phosphoric acids,
Alternatively, JP-A-59-111636 and JP-A-4-73
The mercapto compound and its metal salt described in JP-A No. 649, the acetylene compounds described in JP-A-62-87957 and JP-A-4-255845 are used.

The constituent layers (including the back layer) of the light-sensitive material or the dye-fixing element are used for the purpose of improving physical properties of the film such as dimensional stability, curl prevention, adhesion prevention, film cracking prevention, and pressure increase / decrease prevention. Various polymer latices can be included. Specifically, any of the polymer latexes described in JP-A Nos. 62-245258, 62-136648, and 62-110066 can be used. Especially,
When a polymer latex having a low glass transition point (40 ° C. or less) is used for the mordant layer, cracking of the mordant layer can be prevented, and when a polymer latex having a high glass transition point is used for the back layer, a curl preventing effect can be obtained. .

As the electron donor used in the present invention, in addition to the compound represented by the general formula (1), those known in the field of photothermographic materials can be used in combination. Further, a reducing agent precursor which does not itself have a reducing property but expresses a reducing property by the action of a nucleophilic reagent or heat during the development process can be used. Examples of electron donors used in the present invention include US Pat. No. 4,500,626, Nos. 49-5.
Column 0, Nos. 4,483,914, columns 30 to 31, Nos. 4,330,617, 4,590,152, and JP-A-60-140335, pages (17) to (18). , Ibid. 5-40245, ibid. 56-138736, ibid. 59.
No. 178458, No. 59-53831, No. 59-1
No. 82449, No. 59-182450, No. 60-11
9555, 60-128436 to 60-12
No. 8439, No. 60-198540, No. 60-1
No. 81742, No. 61-259253, No. 62-24
Nos. 4044, 62-131253 to 62-13
Up to 1256, there are electron donors and electron donor precursors described on pages 78 to 96 of EP 220,746A2. Various electron donor combinations, such as those disclosed in U.S. Pat. No. 3,039,869, can also be used.

In the present invention, an electron transfer agent can be used in combination with the electron donor. The electron transfer agent or its precursor can be selected from the above-mentioned electron donor or its precursor. It is desirable that the electron transfer agent or its precursor has a mobility higher than that of the diffusion-resistant electron donor. Particularly useful electron transfer agents are 1-phenyl-3-pyrazolidones or aminophenols. The diffusion-resistant electron donor used in combination with the electron transfer agent may be one that does not substantially move in the layer of the light-sensitive material among the above-mentioned reducing agents, and preferably hydroquinones and sulfonamidephenols. , Sulfonamide naphthols, and compounds described as electron donors in JP-A No. 53-110827. In the present invention, the total addition amount of the electron donor and the electron transfer agent is 0.01 to 20 mol, and particularly preferably 0.1 to 1 mol of silver.
10 to 10 mol.

The dye-donating compound used in the present invention is
When silver ions are reduced to silver under high temperature conditions, it is a compound that counteracts this reaction and produces or releases a mobile dye. Examples of the dye-donating compound include compounds having a function of releasing or diffusing a diffusible dye imagewise. Compounds of this type have the general formula [LI]
Can be represented by (Dye-Y) nZ [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 latent image. Inversely corresponding to the photosensitive silver salt having a difference in the diffusivity of the compound represented by (Dye-Y) n-Z, or releasing Dye, and released Dye and (Dye-Y) represents a group having a property of causing a difference in diffusibility from n-Z, and n is 1
Or, it represents 2, and when n is 2, two Dye-Ys may be the same or different. Specific examples of the dye donating compound represented by the general formula [LI] include the following compounds. The following compounds form a diffusible dye image (positive dye image), which corresponds to the development of silver halide.

US Pat. No. 4,559,290, European Patent 220,746A2, US Pat. No. 4,783,3
As described in No. 96, Kokai Giho 6-6199 and the like, a non-diffusible compound which releases a diffusible dye by reacting with a reducing agent remaining unoxidized by development can also be used.
Examples thereof include U.S. Pat. Nos. 4,139,389 and 4,139,379, JP-A-59-185333,
Compounds which release a diffusible dye by a nucleophilic substitution reaction in the molecule after reduction described in, for example, JP-A-57-84453, U.S. Pat.
-101649, 61-88257, RD240
No. 25 (1984), etc., compounds which release a diffusible dye by an intramolecular electron transfer reaction after reduction, West German Patent No. 3,008,588A, JP-A-56-1984.
No. 142530, U.S. Pat. Nos. 4,343,893, 4,619,884, and the like, compounds which release a diffusible dye by cleavage of a single bond after reduction, U.S. Pat. Examples thereof include nitro compounds described in U.S. Pat. No. 223, which release a diffusible dye after electron acceptance, compounds described in U.S. Pat. No. 4,609,610 which release a diffusible dye after electron acceptance, and the like.

Further, as more preferable ones, European Patent No. 220,746A2, Open Technical Report 87-6199, US Pat. No. 4,783,396, Japanese Patent Laid-Open No. 63-2016.
No. 53, 63-201654 and the like, compounds having an NX bond (X represents an oxygen, sulfur or nitrogen atom) and an electron-withdrawing group in one molecule, JP-A-1-268
No. 42, a compound having an SO ₂ —X (X is as defined above) and an electron-withdrawing group in one molecule.
No. 71344 describes that a PO-X bond (X
Has the same meaning as described above) and a compound having an electron-withdrawing group, C-X 'in one molecule described in JP-A-63-271341.
Compounds having a bond (X ′ has the same meaning as X or represents —SO ₂ —) and an electron-withdrawing group are exemplified. Also, Japanese Patent Application Laid-Open
Compounds disclosed in JP-A-161237 and JP-A-1-161342, in which a single bond is cleaved after reduction by a π bond conjugated to an electron-accepting group to release a diffusible dye, can also be used. Among them, a compound having an NX bond and an electron-withdrawing group in one molecule is particularly preferable. Specific examples thereof are EP 220,746A2 or US Pat. No. 4,783,3.
No. 96, compounds (1) to (3), (7) to
(10), (12), (13), (15), (23)-
(26), (31), (32), (35), (36),
(40), (41), (44), (53)-(59),
(64), (70), compounds (11) to (23) described in JP-A-87-6199, JP-A-6-301,1.
Compounds (I-1) to (I-10) described in No. 81.

The effect of the present invention is more remarkable when the compound represented by the following general formula (3) is used as the yellow dye-donating compound, and this point is also unexpected from the conventional knowledge. General formula (3)

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In the formula, EAG represents a group that receives an electron from an electron-donating substance. N and O represent a nitrogen atom and an oxygen atom, respectively, after the EAG receives an electron.
The heavy bond is cleaved. D ² represents —CO— or —SO ₂ —, D ¹ forms a heterocycle containing N, O and D ² , and cleavage of the N—O bond is followed by cleavage of the D ¹ -G bond. Represents an atomic group having properties. G is a linking group connecting D ¹ and X, and represents a group having a property that the D ¹ -G bond is cleaved after the cleavage of N—O, and G itself has a timing ability for further decomposition. It may be. DYE is a hydrogen atom from a dye or dye precursor represented by the following general formula (4).
Represents a group excluding the above, X is a benzene ring, a naphthalene ring,
Represents a 5- to 8-membered ring containing 1 or 2 nitrogen atoms, or a chain or cyclic alkyl group having 2 to 10 carbon atoms,
Another saturated or unsaturated ring may be condensed, and a part of constituent carbon atoms may be replaced with an oxygen atom or a sulfur atom. L represents a linking group. m is 1 or more, n is 2
Representing the above natural numbers, n L- (DYE) n may be the same or different. General formula (4)

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In the formula, R ⁸ and R ⁹ are hydrogen atom, halogen atom, hydroxy group, cyano group, nitro group, carboxyl group, substituted or unsubstituted alkyl group, aralkyl group,
Cycloalkyl group, aryl group, heterocyclic group, alkoxy group, aryloxy group, amino group, acylamino group, sulfonylamino group, acyl group, sulfonyl group, carbamoyl group, sulfamoyl group, ureido group, alkylthio group, arylthio group, It represents a substituent selected from among them. R ¹⁰ has the same meaning as R ⁸ and R ⁹ except for the hydrogen atom defined by R ⁸ and R ⁹ . p represents an integer of 0 to 5,
When p is 2 to 5, R ¹⁰ may be the same or different. DYE and L are bonded via any one of R ⁸ , R ⁹ and R ^{10 in} the general formula (4). A more detailed description of the above general formula (3) can be found on page (3) of JP-A-6-301181.
Specific compounds described on page (5) are described on pages (6) to (10) of the same publication.

Although the amount of the dye-donating substance used varies depending on the absorption coefficient of the dye, it is generally 10 ⁻⁵ to ⁻⁵ for each hue.
It is 10 ^-2 mol / m ² , preferably 10 ^-4 to 10 ^-3 mol / m ² .

In the present invention, a development inhibitor releasing redox compound can be used. For example, 61-213,847
No. 62-260,153, JP-A-2-68,54.
No. 7, No. 2-110,557, No. 2-253,253
Nos. 1 and 150,135 can be used. The synthesis method of the development inhibitor releasing redox compound used in the present invention is described in, for example, JP-A-61-213,8.
47, 62-260,153, U.S. Pat. No. 4,6.
84,604, JP-A-1-269936, U.S. Pat. Nos. 3,379,529, 3,620,746, 4,377,634, 4,332,878, and JP-A-49. -129,536, 56-153,336.
No. 56-153,342.

In the present invention, the development inhibitor releasing redox compound is 1 × 10 ^{−6 to} 5 × per mol of silver halide.
It is used in an amount of 10 ^-2 mol, more preferably 1 x 10 ^-5 to 1 x 10 ^-2 mol. The development inhibitor releasing redox compound used in the present invention is a suitable water-miscible organic solvent such as alcohols (methanol, ethanol,
Propanol, fluorinated alcohol), ketones (acetone, methyl ethyl ketone), dimethylformamide,
It can be used by dissolving it in dimethyl sulfoxide, methyl cellosolve or the like. Also, by an already well-known emulsification dispersion method, dibutyl phthalate, trisyl phosphate, oil such as glyceryl triacetate or diethyl phthalate, dissolved using an auxiliary solvent such as ethyl acetate or cyclohexanone, mechanically emulsified dispersion. Can be created and used. Alternatively, the powder of the development inhibitor-releasing redox compound may be dispersed in water by a ball mill, a colloid mill, or ultrasonic waves by a method known as a solid dispersion method, and used.

The heat-developable color light-sensitive material of the present invention may contain one or more of dextran, pullulan and derivatives thereof. Dextran and pullulan are types of polysaccharides and are polymers of D-glucose. The dextran used in the present invention preferably has a molecular weight of 20,000 to 2,000,000,
In particular, 100,000 to 800,000 are preferable. The pullulan is preferably 20,000 to 2,000,000. The layer containing dextran, pullulan and derivatives thereof may be any layer of the photothermographic material, but it is preferably contained in the intermediate layer or the protective layer. The use amount of dextran, pullulan and / or their derivatives is 0.01 to 10 g / m ² ,
It is preferably in the range of 0.05 to 5 g / m ² . The reason for using such a range is that if the amount is less than 0.01 g / m ² , the present invention is not effective, and if it exceeds 10 g / m ² , the film quality deteriorates.

Hydrophobic additives such as dye-donor compounds, antidiffusive reducing agents and electron donors are described in US Pat. No. 2,322,0.
It can be incorporated into the layer of the light-sensitive material by a known method such as the method described in No. 27. In this case, JP-A-59
-83154, 59-178451, 59-1
78452, 59-178453, 59-17.
No. 8454, No. 59-178455, No. 59-178.
A high boiling point organic solvent as described in No. 457 and the like can be used in combination with a low boiling point organic solvent having a boiling point of 50 ° C. to 160 ° C., if necessary.

The amount of the high boiling point organic solvent is 10 g or less, preferably 5 g or less, relative to 1 g of the dye-donor compound used. Further, 1 cc or less, more preferably 0.5 cc or less, particularly 0.3 cc or less is suitable for 1 g of the binder. A dispersion method using a polymer described in JP-B-51-39853 and JP-A-51-59943 can also be used. In the case of a compound which is substantially insoluble in water, it can be dispersed and contained as fine particles 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, JP-A-59-
The surfactants described in Research Disclosure, pages 37 to 38 of 157636, can be used. Further, a so-called polymer dispersant can be used. In the present invention, a compound capable of activating development and simultaneously stabilizing an image can be used in the light-sensitive material. Specific compounds preferably used are described in U.S. Pat. No. 4,500,626, columns 51 to 52.

In a system for forming an image by diffusion transfer of a dye, a dye fixing element is used together with a light-sensitive material. The dye-fixing element may be in the form of being separately coated on a support separate from the light-sensitive material, or in the form of being coated on the same support as the light-sensitive material. The relationship between the photosensitive material and the dye fixing element, the relationship with the support, and the relationship with the white reflective layer described in US Pat. No. 4,500,626, column 57, can be applied to the present invention. The dye fixing element 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, and specific examples thereof include US Pat.
00,626, columns 58-59 and JP-A-61-8825.
No. 6, pages (32) to (41);
Nos. 2-244043 and 62-244036. Also, US Pat.
A dye-accepting polymer compound as described in JP-A-63,079 may be used. The dye-fixing element may be provided with an auxiliary layer such as a protective layer, a release layer, and an anti-curl layer, if necessary. It is particularly useful to provide a protective layer.

In the constituent layers of the light-sensitive material and the dye-fixing element, a plasticizer, a slipping agent, or a high boiling point organic solvent can be used as an agent for improving the releasability of the light-sensitive material and the dye-fixing element. Specific examples include (2) of JP-A-62-253159.
5), pages 62-245253 and the like. Further, for the above purpose, various silicone oils (all silicone oils from dimethyl silicone oil to modified silicone oil obtained by introducing various organic groups into dimethyl siloxane) can be used. Examples thereof include 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. In addition, JP-A-62
Silicone oils described in JP-A-215953 and JP-A-63-46449 are also effective.

An anti-fading agent may be used in the light-sensitive material and the dye fixing element. Anti-fading agents include, for example, antioxidants, ultraviolet absorbers, or certain metal complexes.
Examples of the antioxidant include chroman compounds, coumaran compounds, phenol compounds (eg, hindered phenols), hydroquinone derivatives, hindered amine derivatives, and spiroindane compounds. The compounds described in JP-A-61-159644 are also effective. Examples of ultraviolet absorbers include benzotriazole-based compounds (such as U.S. Pat. No. 3,533,794), 4-thiazolidone-based compounds (such as U.S. Pat. No. 3,352,681),
Benzophenone compounds (JP-A-46-2784 and the like), JP-A-54-48535 and JP-A-62-13
Nos. 6641 and 61-88256. Further, ultraviolet absorbing polymers described in JP-A-62-260152 are also effective. Examples of the metal complex include U.S. Pat. Nos. 4,241,155, 4,245,018, columns 3 to 36, and 4,254,195, columns 3 to 8,
There are compounds described in JP-A-62-174741, JP-A-61-88256 (pages 27-29), JP-A-63-199248, JP-A-1-75568 and JP-A-1-74272.

Examples of useful anti-fading agents are disclosed in JP-A-62-21.
No. 5272, pages (125) to (137). An anti-fading agent for preventing fading of the dye transferred to the dye-fixing element may be contained in the dye-fixing element in advance, or may be supplied to the dye-fixing element from the outside such as a photosensitive material. . The above antioxidants, ultraviolet absorbers, and metal complexes may be used in combination with each other. A fluorescent whitening agent may be used for the light-sensitive material and the dye fixing element. In particular, whether the dye-fixing element contains a fluorescent whitening agent,
It is preferable to supply from the outside such as a photosensitive material. As an example, K.K. Veenkataraman ed. "The Chemistry of
Synthetic Dyes ", Volume V, Chapter 8, JP-A-61-143
No. 752 and the like. More specifically, a stilbene compound, a coumarin compound, a biphenyl compound, a benzoxazolyl compound, a naphthalimide compound, a pyrazoline compound, a carbostyril compound, and the like can be given. The fluorescent whitening agent can be used in combination with an anti-fading agent.

As the hardener used in the constituent layers of the light-sensitive material and the dye fixing element, US Pat. No. 4,678,739, No. 4,
Column 1, JP-A-59-116655, JP-A-62-2452
No. 61, No. 61-18942 and the like. More specifically, aldehyde hardeners (such as formaldehyde), aziridine hardeners, epoxy hardeners, and vinyl sulfone hardeners (N, N'-ethylene-
Bis (vinylsulfonylacetamide) ethane, etc., N
-Methylol type hardeners (such as dimethylol urea) and polymer hardeners (compounds described in JP-A-62-234157). Particularly preferred is JP-A-Hei 3
A vinyl sulfone hardener described in -114,043 is used.

In the constituent layers of the light-sensitive material and the dye-fixing element, various surfactants can be used for the purpose of coating aid, improvement of peeling property, improvement of sliding property, antistatic property, acceleration of development and the like. Specific examples of the surfactant are described in JP-A-62-173463.
And No. 62-183457. The constituent layers of the light-sensitive material and the dye-fixing element may contain an organic fluoro compound for the purpose of improving slipperiness, preventing electrification, improving peelability and the like. Representative examples of organic fluoro compounds include JP-B-57-9053, columns 8-17, and JP-A-61-20.
No. 944, No. 62-135826 or the like, or a hydrophobic fluorine compound such as an oily fluorine compound such as fluorine oil or a solid fluorine compound resin such as ethylene tetrafluoride resin. No.

A matting agent can be used in the light-sensitive material and the dye fixing element. Examples of the matting agent include silicon dioxide, polyolefin and polymethacrylate.
JP-A-63-274944 such as benzoguanamine resin beads, polycarbonate resin beads, and AS resin beads in addition to the compounds described on page 1-88256 (29).
And No. 63-274952. In addition, the constituent layers of the light-sensitive material and the dye-fixing element may contain a heat solvent, an antifoaming agent, an antibacterial and antibacterial agent, colloidal silica and the like. Specific examples of these additives are disclosed in JP-A-61-8.
No. 8256, pages (26) to (32).
Further, as a preferable antibacterial / antifungal agent, JP-A-3-11338 is used.
The one from the issue is used.

In the present invention, an image formation accelerator can be used in the light-sensitive material and / or the dye fixing element. Examples of the image formation accelerator include the promotion of a redox reaction between a silver salt oxidizing agent and a reducing agent, the promotion of a reaction such as the generation of a dye from a dye-providing substance or the decomposition or release of a diffusible dye, and the use of a photosensitive material layer. From the physicochemical function to bases or base precursors, nucleophilic compounds, high-boiling organic solvents (oils), thermal solvents, surfactants, silver Or, it is classified into a compound having an interaction with silver ions. However, these substance groups generally have a composite function and usually have some of the above-mentioned promoting effects. Details of these are described in U.S. Pat. No. 4,678,739, columns 38-40. Examples of the base precursor include salts of an organic acid and a base which are decarboxylated by heat, compounds which release amines by an intramolecular nucleophilic substitution reaction, Rossen rearrangement or Beckmann rearrangement, and the like. A specific example is U.S. Pat. No. 4,511,493.
And JP-A-62-65038.

In a system in which heat development and dye transfer are carried out simultaneously in the presence of a small amount of water, it is preferable to add a base and / or base precursor to the dye fixing element in order to enhance the storage stability of the light-sensitive material. In the present invention, EP 210,660, U.S. Pat.
Use is made of a combination of the hardly soluble metal compound described in No. 45 and a compound capable of forming a complex with a metal ion constituting the hardly soluble metal compound (referred to as a complex forming compound). Specifically, JP-A-2-269,338 (2)-
It is described on page (6). Particularly preferred compounds as sparingly soluble metal compounds are zinc hydroxide, zinc oxide and mixtures thereof.

In the present invention, various development terminators can be used in the light-sensitive material and / or the dye-fixing element for the purpose of always obtaining a constant image against variations in processing temperature and processing time during development. As used herein, the term "development terminator" refers to a compound that neutralizes a base or reacts with a base immediately after appropriate development to reduce the base concentration in the film and to stop development by interacting with a compound or silver and silver salt to suppress development. Compound. Specific examples 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. For further details, see JP-A-62-25
No. 3159, pages (31) to (32).

In the present invention, as the support for the light-sensitive material and the dye-fixing element, one which can withstand the processing temperature is used. Generally, paper, synthetic polymer (film)
Is mentioned. Specifically, polyethylene terephthalate, polycarbonate, polyvinyl chloride, polystyrene (especially syndiotactic polystyrene is preferable),
Polypropylene, polyimide, celluloses (for example, triacetyl cellulose) or those films containing a pigment such as titanium oxide, synthetic film made of polypropylene or the like, synthetic resin pulp such as polyethylene and natural pulp Blended paper made from, Yankee paper, baryta paper, coated paper (particularly cast coated paper), metal, cloth, glass and the like are used. These can be used alone,
It can also be used as a support laminated on one or both sides with a synthetic polymer such as polyethylene. In addition to these, the supports described in JP-A-62-253159, pages (29) to (31), JP-A-2-272543, and JP-A-2-2
The support described in No. 2651 can be preferably used. A hydrophilic binder, a semiconductive metal oxide such as alumina sol or tin oxide, carbon black, or another antistatic agent may be applied to the surface of these supports.

As a method of exposing and recording an image on a light-sensitive material, for example, a method of directly photographing a landscape or a person with a camera or the like, a method of exposing through a reversal film or a negative film with a printer or an enlarger, A method of scanning and exposing an original image through a slit or the like using an exposure device of a copying machine, a method of exposing image information by emitting light from a light emitting diode or various lasers through an electric signal, a CRT, a liquid crystal display of image information, There is a method of outputting to an image display device such as an electroluminescence display and a plasma display, and exposing directly or through an optical system.

As a light source for recording an image on a photosensitive material,
As described above, natural light, tungsten lamps, light emitting diodes, laser light sources, CRT light sources, etc., US Pat. No. 4,500,626, column 56, JP-A-2-53,37.
The light sources and exposure methods described in No. 8 and No. 2-54,672 can be used. Further, a light source using a blue light emitting diode, which has been remarkably developed recently, and a green light emitting diode in combination with a red light emitting diode can be used. In particular, Japanese Patent Application Nos. 6-40,164 and 6-40,012
No. 6, No. 6-42, 732, No. 6-86,919, No. 6-86,920, No. 6-93,421, No. 6-9.
4,820, 6-96,628, 6-149,
The exposure apparatus described in No. 609 can be preferably used. Also, image exposure can 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 derivative, JP-A-6
Compounds described in 1-53462 and 62-210432 are preferably used. As a 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 image information is
Image signals obtained from video cameras, electronic still cameras, etc., television signals represented by the Nippon Television Signal Standard (NTSC), image signals obtained by dividing an original image into a large number of pixels such as a scanner, CG, CAD, etc. An image signal created by using a computer can be used.

The light-sensitive material and / or the dye fixing element may have a form having a conductive heating element layer as a heating means for heat development or diffusion transfer of a dye. The transparent or opaque heating element in this case is disclosed in JP-A-61-1.
No. 45544 can be used. Note that these conductive layers also function as antistatic layers. The heating temperature in the heat development step is about 50 ° C. to about 250 ° C., but development at about 80 ° C. to about 180 ° C. is particularly useful. The dye diffusion transfer step may be performed simultaneously with the heat development, or may be performed after the heat development step. 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 it is more preferably 50 ° C. or higher and 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 promote dye transfer. Also,
As described in detail in JP-A-59-218443 and JP-A-61-238056, a method in which development and transfer are carried out simultaneously or continuously by heating in the presence of a small amount of a solvent (particularly water) is also useful. is there. In this method, the heating temperature is preferably not lower than 50 ° C. and not higher than the boiling point of the solvent. For example, when the solvent is water, the temperature is preferably 50 ° C. or more and 100 ° C. or less. Examples of the solvent used for promoting development and / or transferring the diffusible dye to the dye-fixing layer include water or a basic aqueous solution containing an inorganic alkali metal salt or an organic base (these bases include Those described in the section of formation accelerator are used)
Can be mentioned. In addition, a low-boiling solvent or a mixed solution of a low-boiling solvent and water or a basic aqueous solution can also be used. Further, a surfactant, an antifoggant, a sparingly soluble metal salt and a complex-forming compound, a fungicide and a fungicide may be contained in the solvent. Water is preferably used as the solvent in these 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 light-sensitive material and the image-receiving material of the present invention, water may be used up, or may be circulated for repeated use. And JP-A-63-144,354 and JP-A-63-144,3.
No. 55, 62-38, 460, JP-A-3-210,
No. 555 or the like or water may be used.

These solvents can be used by a method of applying them to the dye fixing element, the light-sensitive material or both.
The amount used may be as small as not more than the weight of the solvent corresponding to the maximum swelling volume of the entire coating film (especially not more than the weight of the solvent corresponding to the maximum swelling volume of the entire coating film minus the weight of the entire coating film). Examples of the method for applying a solvent to the photosensitive layer or the dye fixing layer include the methods described in JP-A-62-253,159, page (5) and JP-A-63-85,544. Further, the solvent can be used by being incorporated in advance in the light-sensitive material or the dye-fixing element or both in the form of enclosing the solvent in microcapsules.

In order to promote dye transfer, a method in which a hydrophilic thermal solvent that is solid at room temperature and dissolves at high temperature is incorporated in the light-sensitive material or the dye fixing element can also be adopted. The hydrophilic thermal solvent may be incorporated in either the photosensitive material or the dye fixing element, or may be incorporated in both. The layer to be incorporated may be any of an emulsion layer, an intermediate layer, a protective layer and a dye-fixing layer, but is preferably incorporated in the dye-fixing layer and / or an adjacent layer. Examples of hydrophilic thermal solvents include ureas, pyridines, amides, sulfonamides, imides, alcohols, oximes, and other heterocycles. In order to promote dye transfer, a high-boiling organic solvent may be contained in the light-sensitive material and / or the dye-fixing element.

As a heating method in the developing and / or transferring step, a heated block or plate is brought into contact, or a hot plate, a hot presser, a heat roller, a halogen lamp heater, an infrared or far infrared lamp heater or the like is contacted. And passing through a high temperature atmosphere. JP-A-61-1 is a method for applying a pressure condition or pressure when the light-sensitive element and the dye fixing element are superposed and closely contacted with each other.
No. 47244, page 27, can be applied.

Any of a variety of heat developing apparatus can be used to process the photographic elements of this invention. For example, JP-A-59-7
No. 5247, No. 59-177547, No. 59-181
No. 353, No. 60-18951, Shokai 62-259
No. 44, JP-A-3-131856 and JP-A-3-13185
No. 1, Japanese Patent Application Nos. 4-277,517 and 4-243,0
No. 27, No. 4-244, 693, No. 6-164, 42
No. 1 and No. 6-164,422, etc. are preferably used. As a specific device, Fuji Photo Film Co., Ltd. Fujix Pictolostat 100, Pictolostat 200, and Pictolostat 300 are preferably used.

[0087]

EXAMPLES The present invention will be described below with reference to examples.
The present invention is not limited to these.

Example 1 A method for preparing a zinc hydroxide dispersion will be described.

12.5 g of zinc hydroxide having an average particle size of 0.2 μm, 1 g of carboxymethyl cellulose as a dispersant, and 0.1 g of sodium polyacrylate were added to 100 ml of a 4% gelatin aqueous solution, and the average particle size was 0.75 mm with a mill. It was ground for 30 minutes using glass beads. The glass beads were separated to obtain a dispersion of zinc hydroxide.

Next, a method for preparing a dispersion of the electron transfer agent will be described.

10 g of the following electron transfer agent, 0.4 g of carboxymethyl cellulose (manufactured by Dai-ichi Kogyo Co., Ltd., trade name Serogen 6A) as a dispersant, and the following surfactant (1)
0.2 g was added to a 5% gelatin aqueous solution, and the mixture was milled for 60 minutes using glass beads having an average particle size of 0.75 mm.
The glass beads were separated to obtain a dispersion of the electron transfer agent having an average particle size of 0.35 μm.

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Next, the method for preparing the dye trapping agent dispersion will be described.

The following polymer latex (solid content 13
%) 108 ml, the following surfactant 20 g, water 1232 ml
While stirring this mixture, 600 ml of a 5% aqueous solution of the following anionic surfactant was added over 10 minutes. Using the ultrafiltration module, the dispersion made in this way is
It was concentrated and desalted to 500 ml. Next, 1500 ml of water was added and the same operation was repeated once again to obtain 500 g of a dye trapping agent dispersion.

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Next, a method for preparing a gelatin dispersion of a hydrophobic additive will be described.

Cyan, magenta, and yellow dye-donor compounds and electron-donor gelatin dispersions were prepared according to the formulations shown in Table 1. That is, each oil phase component was heated and dissolved at about 60 ° C. to form a uniform solution. This solution and the aqueous phase component heated at about 60 ° C. were added, mixed with stirring, and dispersed with a homogenizer for 13 minutes at 12,000 rpm. Add water to this,
Stirring yielded a uniform dispersion. Furthermore, for gelatin dispersions of magenta and cyan dye-donor compounds, an ultrafiltration module (Asahi Kasei Ultrafiltration Module ACV
-3050) using water to repeat dilution and concentration,
Ethyl acetate and methyl ethyl ketone in Table 1 were reduced to 1/6.

[0101]

[Table 1]

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

Photosensitive silver halide emulsion (1) [for red-sensitive emulsion layer] A well-stirred aqueous gelatin solution (20 g of gelatin, 0.5 g of potassium bromide, 2.5 g of sodium chloride in 700 ml of water and the following chemicals) (A) Add 15mg and 42 ℃
Solution (I) and solution (II) in Table 2 were simultaneously added at a constant flow rate for 8 minutes. Then, 8 minutes after the completion of the addition of the solutions (I) and (II), an aqueous solution of a gelatin dispersion of the dye (water
1.9 g of gelatin in 0 ml, the following pigment (a): 127 m
g, 253 mg of the following pigment (b), 8 mg of the following pigment (c)
Containing 35 ° C. and kept at 35 ° C.). Two minutes later, solution (III) and solution (IV) shown in Table 2 were simultaneously added at the same flow rate for 32 minutes.

After washing with water and desalting in a conventional manner, 22 g of lime-treated ossein gelatin and 50 mg of the following chemical (B) were added to adjust the pH to 6.2 and the pAg to 7.8, and to adjust 4-hydroxy-6- Methyl-1,3,3a, 7-tetrazaindene was added, and then sodium thiosulfate and chloroauric acid were added for optimal chemical sensitization at 68 ° C. Then, the following antifoggant (1) and chemical (C) ) 80 mg and 3 g of the chemical (D) were added and the mixture was cooled. Thus, the average particle size is 0.21 μm
635 g of a monodispersed cubic silver chlorobromide emulsion was obtained.

[0117]

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[0118]

[Table 2]

[0119]

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[0120]

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[0121]

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Photosensitive silver halide emulsion (2) [for red-sensitive emulsion layer] A well-stirred aqueous gelatin solution (20 g of gelatin, 0.3 g of potassium bromide, 9 g of sodium chloride in 700 ml of water)
g) and 15 mg of the above-mentioned chemical (A) were added thereto, and the mixture was kept at 53 ° C.). Solution (I) and solution (II) in Table 3 were simultaneously added at an equal flow rate for 10 minutes. Then, 6 minutes after the completion of the addition of the liquids (I) and (II), an aqueous solution of a pigment dispersion of the pigment (1.2 g of gelatin in 115 ml of water, 77 mg of the pigment (a), 153 mg of the pigment (b), and 153 mg of the pigment 45 containing 5 mg of pigment (c)
℃). Table 2 after 4 minutes
Solution (III) and Solution (IV) were simultaneously added at an equal flow rate for 30 minutes.

After washing with water and desalting according to a conventional method, 33 g of lime-treated ossein gelatin and 50 mg of the above-mentioned chemical (B) were added to adjust the pH to 6.2 and the pAg to 7.8, and to adjust 4-hydroxy-6-. Methyl-1,3,3a, 7-tetrazaindene was added, and then sodium thiosulfate and chloroauric acid were added for optimal chemical sensitization at 68 ° C. Then, the antifoggant (1) and the chemical (C) ) 80 mg and 3 g of the chemical (D) were added and the mixture was cooled. Thus, the average particle size is 0.45 μm
635 g of a monodispersed cubic silver chlorobromide emulsion was obtained.

[0124]

[Table 3]

Photosensitive silver halide emulsion (3) [for green-sensitive emulsion layer] A well-stirred aqueous gelatin solution (20 g of gelatin, 0.5 g of potassium bromide, 5 g of sodium chloride in 690 ml of water)
g) and 15 mg of the above-mentioned chemical (A) were added thereto, and the mixture was kept at 41 ° C.). Solution (I) and solution (II) in Table 4 were simultaneously added at a constant flow rate for 8 minutes. After 10 minutes, solutions (III) and (IV) shown in Table 4 were simultaneously added at the same flow rate for 32 minutes. (II
One minute after completion of the addition of the liquids (I) and (IV), a methanol solution of the dye (containing 280 mg of the following dye (d) in 47 ml of methanol and kept at 30 ° C.) was added all at once.

After washing with water and desalting in a conventional manner, 22 g of lime-treated ossein gelatin, 50 mg of the above-mentioned chemical (B) and 3 g of chemical (D) were added to adjust the pH to 6.0 and the pAg to 7.1. 4-hydroxy-6-methyl-1,3,3a, 7
-Tetrazaindene was added, and then sodium thiosulfate was added for optimal chemical sensitization at 60 ° C. Then, the following antifoggant (1) was added, followed by cooling. Thus, a monodisperse cubic silver chlorobromide emulsion 63 having an average grain size of 0.23 μm was prepared.
5 g were obtained.

[0127]

[Table 4]

[0128]

Embedded image

Photosensitive silver halide emulsion (4) [for green-sensitive emulsion layer] A well-stirred aqueous gelatin solution (20 g of gelatin, 0.3 g of potassium bromide, 9 g of sodium chloride in 710 ml of water)
g) and 7.5 mg of the above-mentioned chemical (A) were added, and the mixture was kept at 63 ° C.).
It was added at an equal flow rate for 0 minutes. After 10 minutes, (III) in Table 5
The solution and the solution (IV) were simultaneously added at an equal flow rate for 20 minutes. Also
One minute after the completion of the addition of the liquids (III) and (IV), a methanol solution of the dye (170 mg of the above-mentioned dye (d) in 35 ml of methanol)
Which was kept at 46 ° C.).

After washing with water and desalting in a conventional manner, 33 g of lime-treated ossein gelatin, 50 mg of the above-mentioned chemical (B) and 3 g of chemical (D) were added to adjust the pH to 6.0 and the pAg to 7.2. 4-hydroxy-6-methyl-1,3,3a, 7
-Tetrazaindene was added, sodium thiosulfate and chloroauric acid were added, and the mixture was optimally chemically sensitized at 60 ° C. Then, the following 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.

[0131]

[Table 5]

Photosensitive silver halide emulsion (5) [for blue-sensitive emulsion layer] A well-stirred aqueous gelatin solution (20 g of gelatin, 0.5 g of potassium bromide, 5 g of sodium chloride in 690 ml of water)
g) and 15 mg of the above-mentioned chemical (A) were added thereto, and the mixture was kept at 46 ° C.). Solution (I) and solution (II) in Table 6 were simultaneously added at the same flow rate for 8 minutes. After 10 minutes, solutions (III) and (IV) shown in Table 6 were simultaneously added at the same flow rate for 18 minutes. (II
One minute after the completion of the addition of the liquids (I) and (IV), an aqueous solution of the dye (water 9
225 mg of the following dye (e) in 5 ml and 5 ml of methanol
And the following dye (f) containing 225 mg and kept at 30 ° C.) were added all at once.

After washing with water and desalting in a conventional manner, 22 g of lime-treated ossein gelatin, 50 mg of the above-mentioned chemical (B) and 3 g of chemical (D) were added to adjust the pH to 6.0 and the pAg to 7.7. 4-hydroxy-6-methyl-1,3,3a, 7
-Addition of tetrazaindene, then sodium thiosulfate, optimal chemical sensitization at 65 ° C, then addition of the following antifoggant (1) followed by cooling. Thus, a monodisperse cubic silver chlorobromide emulsion 63 having an average grain size of 0.27 μm was prepared.
5 g were obtained.

[0134]

[Table 6]

[0135]

Embedded image

[0136]

Embedded image

Photosensitive silver halide emulsion (6) [for blue-sensitive emulsion layer] A well stirred gelatin aqueous solution (20 g of gelatin, 0.3 g of potassium bromide, 9 g of sodium chloride in 710 ml of water)
g) and 15 mg of the above-mentioned chemical (A) were added thereto, and the mixture was kept at 59 ° C.). Liquids (I) and (II) in Table 7 were simultaneously added at a constant flow rate for 8 minutes. After 10 minutes, solutions (III) and (IV) in Table 7 were simultaneously added at the same flow rate for 18 minutes. (II
One minute after the completion of the addition of the liquids (I) and (IV), an aqueous solution of the dye (water 8
113 mg of the above dye (e) in 2 ml and 6 ml of methanol
And the above-mentioned dye (f) containing 113 mg and kept at 40 ° C.) were added all at once.

After washing with water and desalting in a conventional manner, 33 g of lime-treated ossein gelatin, 50 mg of the above-mentioned chemical (B) and 3 g of chemical (D) were added to adjust the pH to 6.0 and the pAg to 7.7. 4-hydroxy-6-methyl-1,3,3a, 7
-Tetrazaindene was added, sodium thiosulfate and chloroauric acid were added, and the mixture was optimally chemically sensitized at 65 ° C. Then, the following antifoggant (1) was added, followed by cooling. Thus, 635 g of a monodisperse cubic silver chlorobromide emulsion having an average grain size of 0.47 μm was obtained.

[0139]

[Table 7]

Using the above materials, photosensitive materials 101 shown in Table 8 were prepared.

[0141]

[Table 8]

[0142]

[Table 9]

[0143]

[Table 10]

[0144]

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[0145]

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[0146]

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[0147]

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[0148]

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[0149]

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[0150]

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As in the case of the photosensitive material 101, as shown in Table 9, the photosensitive material 101 was prepared in the same manner as the photosensitive material 101 except that the kinds and amounts of the compounds represented by the general formulas (1) and (2) in the photosensitive layer were changed. Photosensitive materials 102 to 111 were prepared.

[0152]

[Table 11]

Next, a method for producing the image receiving material will be described. An image receiving material G101 having a constitution as shown in Table 10 was prepared.

[0154]

[Table 12]

[0155]

[Table 13]

[0156]

Embedded image

[0157]

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[0158]

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[0159]

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[0160]

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Processing using the above-mentioned photosensitive materials 101 to 111 and image receiving material G101, and an image forming apparatus (Pictrostat 300 manufactured by Fuji Photo Film Co., Ltd.) for applying a small amount of water to the photosensitive material to perform thermal development diffusion transfer did.
That is, the original image [a test chart obtained by photographing a Macbeth color checker chart and printing it on color paper] was placed on the original plate of Pictrostat 300, and processed by the pictrostat. Gray step Ne at this time
The exposure amount of each layer was adjusted so that the density of the general 5 was 0.7 (measured using a density measuring device X light 404 manufactured by X light company). At this time, the water temperature when applying water is 30 ° C.
Alternatively, the temperature was changed to 50 ° C. for treatment. Photosensitive material 101
~ 111 is processed as described above, the white background of the obtained image is measured by X light 404, and the difference (ΔD) between the white background when the water temperature is 30 ° C and the white background when the water temperature is 50 ° C is obtained. It was Regarding the raw storability, the light-sensitive material was treated under the conditions of 45 ° C. and 80% RH for 5 days and then processed in the same manner as above, and the fluctuation range of the white background before and after the aging was compared. At this time, the water temperature when applying water is 40 ° C.
I went in. The results are shown in Tables 11 and 12.

[0162]

[Table 14]

[0163]

[Table 15]

In Table 11, it can be seen that in the light-sensitive material of the present invention, the white background is less likely to be affected by the change in the temperature condition of water application, as compared with the light-sensitive material 101. In addition, Table 12 shows that the photosensitive material of the present invention shows little fluctuation even after being stored raw.

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 30, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Embedded image In the formula, A represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions, and may be the same or different. R ^{1 to} R ⁴ may be the same or different and each is a hydrogen atom, halogen atom, hydroxy group, alkyl group, aryl group, carbamoyl group, sulfamoyl group, sulfonyl group, acyl group, alkoxycarbonyl group, aryl. Oxycarbonyl group, alkoxy group, amino group, acylamino group, aryloxy group,
It represents a sulfonylamino group, an alkylthio group, an arylthio group, a sulfo group, and a carboxyl group. R ¹ and R ² , R
³ and R ⁴ may combine with each other to form a ring. α represents a divalent linking group, and n represents 0 or 1. General formula (2)

Embedded image In the formula, M represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions, R ⁵ represents an alkyl group or an aryl group, and R ⁶ and R ⁷ represent a hydrogen atom, a halogen atom, an alkyl group, an aryl group, carbamoyl. Represents a group, a sulfamoyl group, or an acyl group.

Embedded image In the formula, EAG represents a group that receives an electron from an electron-donating 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 —, D 1 forms a heterocycle containing N, O, and D ² and the property that D ¹ -G bond is cleaved after cleavage of N—O bond Represents an atomic group having. G is a connecting group connecting D ¹ and X, and N-
It represents a group having a property that the D ¹ -G bond is cleaved after the cleavage of O, and G itself may have a timing ability for further decomposition. DYE represents a group obtained by removing one hydrogen atom from the dye or dye precursor represented by the following general formula (4), and X represents a benzene ring, a naphthalene ring, and a nitrogen atom.
Or a 5- to 8-membered ring containing 2 or 2 to 10 carbon atoms
Represents a chain or cyclic alkyl group, and other saturated or unsaturated ring may be condensed, and a part of constituent carbon atoms may be replaced by an oxygen atom or a sulfur atom.
L represents a linking group. m represents a natural number of 1 or more and n is 1 or more, and n L- (DYE) n may be the same or different. General formula (4)

Embedded image In the formula, R ⁸ and R ⁹ are hydrogen atom, halogen atom, hydroxy group, cyano group, nitro group, carboxyl group, alkyl group, aralkyl group, cycloalkyl group, aryl group, heterocyclic group, alkoxy group, aryloxy group, Amino group,
It represents a substituent selected from an acylamino group, a sulfonylamino group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, a ureido group, an alkylthio group and an arylthio group. R ¹⁰ has the same meaning as R ⁸ and R ⁹ except for the hydrogen atom defined by R ⁸ and R ⁹ . p ¹ 0
Represents an integer of 5 and when p ¹ is 2 to 5, R ¹⁰ may be the same or different. DYE and L are general formula (4)
Is bonded at any one of R ⁸ , R ⁹ and R ¹⁰ .

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

However, since the photothermographic material for obtaining the above-mentioned color image is a non-fixing type, silver halide remains after the image is formed, and the white background is gradually colored when exposed to strong light or stored for a long time. It causes a serious problem of coming. Furthermore, the above-mentioned methods generally have the disadvantage that development takes a relatively long time, and the resulting image can only have high fog and low image density.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

In such an image forming method, as a method of applying water, a method of forcibly supplying a fixed amount of water from the outside or a hydrophilic polymer such as gelatin as a binder, and a fixed amount of water is used according to its water absorption property. In many cases, the method of applying water is adopted. Of these water application methods,
The latter method is generally adopted from the viewpoint of simplification of the apparatus and uniformity of water application. However, in the case of using this water application method, when the water temperature or the like changes, the water absorption property of the hydrophilic polymer also changes, and the amount of applied water itself changes. Under such conditions, the concentration of the base released by the above-mentioned reaction forming reaction may fluctuate, and the resulting image, especially the white background, may fluctuate. In the above-mentioned positive-working heat-developable color light-sensitive material, it is preferable to accelerate silver development in the exposed area and quickly consume the electron donor in order to reduce the fluctuation of the white background. Therefore, in many cases, a method of using a diffusible electron transfer agent to reduce exposed silver halide with this electron transfer agent and oxidizing the electron donor with an oxidized form of the electron transfer agent is often used. However, even if such a method is used, it may not be possible to obtain a sufficient white background due to a change in the condition of applying water. On the other hand, as the yellow dye-donating compound used in the image forming method as described above, the light fastness and the density of the obtained image change in a very short time when the image is irradiated with light, especially in the multicolor portion. JP-A-6-301181 discloses a novel compound effective for solving the phenomenon that the colors appear different. Many of these yellow dye-donating compounds generally exhibit sharp absorption also from the viewpoint of hue, and are advantageous in color reproduction, but when these compounds are used, the image quality of the fluctuation of the conditions for imparting water, In particular, it has been found that the effect on the white background becomes greater.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

[0015]

[Chemical 6]

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

The compound represented by the general formula (1) is resistant to diffusion.
Is preferred, and therefore R ¹~ R^Four, Α
It is preferred that they have 8 or more carbon atoms. Below
Specific examples of the compound represented by the general formula (1) will be given below.
Is not limited to these.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction contents]

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 washing method performed by gelling gelatin may be used, and inorganic salts composed of polyvalent anions (eg, sodium sulfate), anionic surfactants, anionic polymers (eg, polystyrenesulfonic acid) Sodium) or a precipitation method using a gelatin derivative (for example, aliphatic acylated gelatin, aromatic acylated gelatin, aromatic carbamoylated gelatin, etc.). The sedimentation method is preferably used.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

[Correction contents]

The dye-donating compound used in the present invention is
When silver ions are reduced to silver under high temperature conditions, it is a compound that counteracts this reaction and produces or releases a mobile dye. Examples of the dye-donating compound include compounds having a function of releasing or diffusing a diffusible dye imagewise. Compounds of this type have the general formula [LI]
Can be represented by ((Dye) _p -Y) nZ [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) _p —Y) nZ is produced, or Dye is released and the released Dye is released. And ((Dye) _p -Y) n-Z represent a group having a property of causing a difference in diffusibility, p represents a natural number of 1 or more, n represents 1 or 2, and n is When 2, two Dye-Y may be the same or different. Specific examples of the dye donating compound represented by the general formula [LI] include the following compounds. The following compounds form a diffusible dye image (positive dye image), which corresponds to the development of silver halide.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Change

[Correction contents]

In the formula, EAG represents a group that receives an electron from an electron-donating substance. N and O represent a nitrogen atom and an oxygen atom, respectively, after the EAG receives an electron.
The heavy bond is cleaved. D ² represents —CO— or —SO ₂ —, D ¹ forms a heterocycle containing N, O and D ² , and cleavage of the N—O bond is followed by cleavage of the D ¹ -G bond. Represents an atomic group having properties. G is a linking group connecting D ¹ and X, and represents a group having a property that the D ¹ -G bond is cleaved after the cleavage of N—O, and G itself has a timing ability for further decomposition. It may be. DYE is a hydrogen atom from a dye or dye precursor represented by the following general formula (4).
Represents a group excluding the above, X is a benzene ring, a naphthalene ring,
Represents a 5- to 8-membered ring containing 1 or 2 nitrogen atoms, or a chain or cyclic alkyl group having 2 to 10 carbon atoms,
Another saturated or unsaturated ring may be condensed, and a part of constituent carbon atoms may be replaced with an oxygen atom or a sulfur atom. L represents a linking group. m is 1 or more, n is 1
Representing the above natural numbers, n L- (DYE) n may be the same or different.

Claims (3)

[Claims] 1. A heat-developable color light-sensitive material containing at least a light-sensitive silver halide, a binder, an electron donor and a dye-donating compound on a support and represented by the following general formula (1) as the electron donor. A heat-developable color light-sensitive material containing at least one compound represented by the general formula (2). General formula (1) In the formula, A represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions, and may be the same or different. R ^{1 to} R ⁴ may be the same or different and each is a hydrogen atom, halogen atom, hydroxy group, alkyl group, aryl group, carbamoyl group, sulfamoyl group, sulfonyl group, acyl group, alkoxycarbonyl group, aryl. Oxycarbonyl group, alkoxy group, amino group, acylamino group, aryloxy group,
It represents a sulfonylamino group, an alkylthio group, an arylthio group, a sulfo group, and a carboxyl group. R ¹ and R ² , R
³ and R ⁴ may combine with each other to form a ring. α represents a divalent linking group, and n represents 0 or 1. General formula (2) In the formula, M represents a hydroxy group or a group which gives a hydroxy group under alkaline conditions, R ⁵ represents an alkyl group or an aryl group, and R ⁶ and R ⁷ represent a hydrogen atom, a halogen atom, an alkyl group, an aryl group, carbamoyl. Represents a group, a sulfamoyl group, or an acyl group. 2. A heat-developable color light-sensitive material according to claim 1, which contains a compound represented by the following general formula (3) as a dye-donating compound. General formula (3) In the formula, EAG represents a group that receives an electron from an electron-donating 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 —, D 1 forms a heterocycle containing N, O, and D ² and the property that D ¹ -G bond is cleaved after cleavage of N—O bond Represents an atomic group having. G is a connecting group connecting D ¹ and X, and N-
It represents a group having a property that the D ¹ -G bond is cleaved after the cleavage of O, and G itself may have a timing ability for further decomposition. DYE represents a group obtained by removing one hydrogen atom from the dye or dye precursor represented by the following general formula (4), and X represents a benzene ring, a naphthalene ring, and a nitrogen atom.
Or a 5- to 8-membered ring containing 2 or 2 to 10 carbon atoms
Represents a chain-like or cyclic alkyl group, other saturated or unsaturated ring may be condensed, and a part of constituent carbon atoms may be replaced by an oxygen atom or a sulfur atom.
L represents a linking group. m is a natural number of 1 or more and n is 2 or more, and n L- (DYE) n may be the same or different. General formula (4) In the formula, R ⁸ and R ⁹ are hydrogen atom, halogen atom, hydroxy group, cyano group, nitro group, carboxyl group, alkyl group, aralkyl group, cycloalkyl group, aryl group, heterocyclic group, alkoxy group, aryloxy group, Amino group,
It represents a substituent selected from an acylamino group, a sulfonylamino group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, a ureido group, an alkylthio group and an arylthio group. R ¹⁰ has the same meaning as R ⁸ and R ⁹ except for the hydrogen atom defined by R ⁸ and R ⁹ . p is 0
Represents an integer of 5, and when p is 2 to 5, R ¹⁰ may be the same or different. DYE and L are R in the general formula (4).
Bond at any one of ⁸ , R ⁹ and R ¹⁰ . 3. In claim 2, when the compound represented by the general formula (1) and the compound represented by the general formula (2) are contained in the same layer, the compound represented by the general formula (2) is 1 to 10 of compounds represented by the general formula (1) contained in the same layer
A heat-developable color photosensitive material characterized by being 0 mol%.