JPH103152A - Dye fixing element and image forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain coloring of the circumference part of a dye fixing element in the case of storing for a long period, by incorporating a specified compound in the dye fixing element. SOLUTION: The dye fixing element containing a mordant and a base and/or its precursor on at least one side of a support contains at least one kind of compound represented by the formula in which each of R<1> -R<4> is, independently, a 1-4C alkyl group, and X is a <=15C bivalent hydrocarbon group. The details of the mechanism of yellowing prevention by the compound of the formula are not known but it is presumed that the nitration reaction of 2,6-t-butyl-5- hydroxphenol is prevented by each compound. This compound itself is aleady known and the coloring of the circumference of the dye fixing element can be prevented by incorporating this compound in the element and executing this image forming method in this invention.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a dye diffusion transfer type image forming method and a dye fixing element used therein. More specifically, the present invention provides a dye-fixing element having improved coloring around the dye-fixing element when an image is stored for a long time, and an image forming method.

[0002]

2. Description of the Related Art Photothermographic materials are known in this technical field. For details of photothermographic materials and processes, see, for example, "Basics of Photographic Engineering", Non-Silver Salt Photo Edition, 1982, published by Corona Co., Ltd., p. ２５255.

Many methods have been proposed for obtaining a color image by thermal development. For example, U.S. Pat.
No. 6, No. 3761270, No. 4021240, Belgian Patent No. 80
No. 2519, Research Disclosure Magazine (hereinafter abbreviated as RD), pages 31 to 32, September 1975, etc., have proposed a method of forming a color image by combining an oxidized developer with a coupler. However, since the photothermographic material for obtaining the above color image is of a non-fixing type, silver halide remains even after image formation, and when exposed to strong light or stored for a long time, a white background gradually becomes colored. This causes a serious problem. Furthermore, the above-mentioned processing 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 a dye fixing element having a mordant with a solvent such as water. (US Patent No. 450062
No. 6, No. 4483914, No. 4503137, No. 4559920, JP-A-59-165054, etc.). The dye-fixing material of the dye diffusion transfer method contains a mordant as described above, and an image is formed by fixing the dye to be diffuse-transferred to the mordant by ionic interaction. However, in the case of this dye fixing method, it has been found that there is a problem that a background portion which should be originally a white background or transparent before or after image formation is colored with time. The present inventors have studied to find the cause of this problem, and in addition to the dye that the mordant diffuses and transfers, ionic substances present in the air and other water-soluble ionic substances are also fixed. I figured out that it was because of it. Furthermore, it was found that vanillin, 2,6-, t-butyl-5-hydroxyphenol derivative and the like exist in the air and cause coloring of the background of the dye fixing material. In particular, 2,6-t-butyl-5-hydroxyphenol (hereinafter referred to as BNP)
Is widely used as an anti-aging agent for various polymer materials and as an antioxidant for foods, and is considered to be present in a large amount in the air. Furthermore, when 2,6-t-butyl-5-nitrophenol formed by nitration of 2,6-t-butyl-5-hydroxyphenol penetrates into the above-mentioned dye-fixing element, it is particularly easy to develop a color. When stored for a long time, it was found that the periphery of the dye fixing element was colored yellow.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a dye-fixing element and an image forming method in which the periphery of the dye-fixing element is less likely to be colored when the dye-fixing element is stored for a long period of time. .

[0006]

An object of the present invention is to provide a dye-fixing element containing a mordant and a base and / or a base precursor on at least one surface of a support, wherein the dye-fixing element has the following general formula: A dye-fixing element comprising at least one compound represented by formula (1), or a reaction corresponding to at least a photosensitive silver halide, a reducing agent, and a reaction in which silver halide is reduced to silver on a support. A heat-developable color light-sensitive material containing a non-diffusible dye-donating compound and a binder that emits or forms a correspondingly diffusible dye is heated after image exposure, thereby releasing a diffusible image-forming dye imagewise. And an image forming method for diffusing and transferring the same to a dye-fixing layer of a dye-fixing element. It was achieved by an image forming method, which comprises carrying out in the presence. General formula (1)

[0007]

Embedded image

In the formula, R ^{1 to} R ⁴ represent the same or different alkyl groups having 1 to 4 carbon atoms, and X represents a divalent hydrocarbon group having 15 or less carbon atoms. The details of the mechanism of yellowing prevention by the compounds represented by the general formula (1) are unknown, but it is presumed that these compounds prevent the nitration reaction of BNP. Although the substance itself of the compound of the general formula (1) is already known, it is difficult to expect that coloring of the periphery of the dye-fixing element can be prevented by the dye-fixing element and the image forming method of the present invention.

Hereinafter, the semicarbazide compound represented by the general formula (1) of the present invention will be described in detail. In the general formula (1), R ^{1 to} R ⁴ are the same or different alkyl groups having 1 to 4 carbon atoms, and examples of the alkyl group include a methyl group, an ethyl group, an n- or iso-propyl group,
Examples thereof include an n- or sec- or t-butyl group, and a methyl group is particularly preferable. In the general formula (1), X is a divalent hydrocarbon group having 15 or less carbon atoms.

[0010]

Embedded image

(Where n is an integer of 10 or less, m is an integer of 3 or less, p is an integer of 0 to 4, and r is an integer of 0 to 4). Specific examples of the compound represented by the general formula (1) include, for example, 1,6-hexamethylenebis (N, N-
Dimethylsemicarbazide), 4,4- (methylenedi-p-phenylene) bis (N, N-diethylsemicarbazide), 4,4-
(Methylenedi-p-phenylene) bis (N, N-dimethylsemicarbazide), 4,4- (methylenedi-p-phenylene)
Bis (N, N-di-1-propylsemicarbazide), α, α-
(p-xylylene) bis (N, N-dimethylsemicarbazide), 1,4-cyclohexylenebis (N, N-dimethylsemicarbazide), 1,1,1 ′, 1′-tetramethyl-4,4 (methylene- Di-p-phenylene) disemicarbazide, burette litri (hexamethylene-N, N-dimethylsemicarbazide) and the like.

In the present invention, the compound represented by the general formula (1) can be added to any place in the dye fixing element. Further, it may be added to a heat-developable color photosensitive material and transferred during heat development. Further, when a small amount of a solvent such as a small amount of water is used during thermal development, it can be added to the solvent. Among these uses, in the present invention, the compound represented by the general formula (1) is preferably added to the dye-fixing element, and more specifically, to the dye-fixing layer in the dye-fixing element or the support. Preferably, it is added. In the present invention, the compound represented by the general formula (1) can be used alone or in combination of two or more. In the present invention, the compound represented by the general formula (1) is preferably used in the range of 0.001 to 1000% by weight, more preferably 0.01 to 200% by weight, based on the mordant described below.
Is preferably used.

Hereinafter, the photothermographic material and the dye fixing element used in the present invention will be described in more detail. The photothermographic material used in the present invention basically has a photosensitive silver halide and a binder on a support, and further, if necessary, an organic metal salt oxidizing agent and a dye donating compound (as described later). May also serve as a reducing agent). These components are often added to the same layer, but may be added separately to another layer if they can react. For example, if a coloring dye-providing compound is present in the lower layer of the silver halide emulsion, the sensitivity can be prevented from lowering. The reducing agent is preferably incorporated in the photothermographic material, but may be supplied from the outside by, for example, a method of diffusing from a dye fixing element described later.

In order to obtain a wide range of colors in the chromaticity diagram using the three primary colors of yellow, magenta and cyan, at least three silver halide emulsion layers sensitive to different spectral regions are used in combination. . For example, JP-A-59-180,550 and JP-A-64-13,546, 6
2-253,159, EP-A-479,167.
No. 3, blue-sensitive layer, green-sensitive layer, red-sensitive layer, green-sensitive layer, red-sensitive layer, infrared-sensitive layer, red-sensitive layer, infrared-sensitive layer (I), red There is a combination of the outer photosensitive layer (II) and the like. Each photosensitive layer can adopt various arrangement orders known for ordinary type color photosensitive materials. Each of these photosensitive layers may be divided into two or more layers as necessary as described in JP-A-1-252954. In the photothermographic material, various non-photosensitive layers such as a protective layer, an undercoat layer, an intermediate layer, a yellow filter layer, and an antihalation layer are provided between the silver halide emulsion layers and the uppermost layer and the lowermost layer. Various auxiliary layers such as a back layer can be provided on the opposite side of the support. Specifically, the layer constitution as described in the above patent, US Pat. No. 5,051,33
5, an undercoat layer described in JP-A No. 5-167,838.
And an intermediate layer having a solid pigment as described in JP-A-61-20,943; JP-A-1-120,553;
Intermediate layers having a reducing agent or a DIR compound as described in JP-A-34,884 and JP-A-2-64,634;
17,454,5,139,919;
An intermediate layer having an electron transfer agent as described in JP-A-235,044, a protective layer having a reducing agent as described in JP-A-4-249,245, or a layer obtained by combining them can be provided. When the support is polyethylene laminated paper containing a white pigment such as titanium oxide, the back layer has an antistatic function and a surface resistivity of 10 ¹² Ω · cm.
It is preferable that the design is made as follows.

The silver halide which can be used in the present invention may be any of silver chloride, silver bromide, silver iodobromide, silver chlorobromide, silver chloroiodide and silver chloroiodobromide. The silver halide emulsion used in the present invention may be 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 in which the inside of the grain and the surface layer of the grain have different phases may be used, and silver halides having different compositions may be joined by epitaxial joining. The silver halide emulsion may be monodispersed or polydispersed.
As described in JP-A-167,743 and JP-A-4-223,463, a method of mixing monodispersed emulsions and adjusting gradation is preferably used. The particle size is between 0.1 and 2 μm, especially between 0.
2 to 1.5 μm is preferred. The crystal habits of silver halide grains include those having regular crystals such as cubic, octahedral, and tetrahedral, those having irregular crystal systems such as spheroids and high aspect ratio tabular, and those having twin planes. It may be one having such a crystal defect, or a composite system thereof, or any other. Specifically, US Pat. No. 4,500,626 No. 5
Column 0, No. 4,628,021, Research Disclosure Magazine (hereinafter abbreviated as RD) No. 17,029
No. (1978). 17, 643 (1971
(Feb.) pages 22-23, ibid. 18, 716 (1979
Nov., 648, p. 307, 105 (19
Nov. 1989) pp. 863-865, JP-A-62-25
No. 3,159, No. 64-13,546, JP-A No. 2-2
Nos. 36,546 and 3-110,555, and Grafkid, "Physics and Chemistry of Photography", published by Paul Monte (P.
Glafkides, Chemie et Phisique Photographique, Paul
Montel, 1967), Duffin's "Photoemulsion Chemistry", published by Focal Press (GFDuffin, Photographic Emulsion C).
hemistry, Focal Press, 1966), "Manufacture and coating of photographic emulsions" by Zerikman et al., Focal Press (VLZe)
likman et al., Making and Coating PhotographicEmalu
and any of the silver halide emulsions prepared by the method described in Scion, Focal Press, 1964) can be used.

In the process of preparing the photosensitive silver halide emulsion of the present invention, it is preferable to carry out so-called desalting for removing 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 amount of addition 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 contained in the particles, or may be localized inside or on the surface of the particles. Specifically, emulsions described in JP-A-2-236542, JP-A-1-116637 and JP-A-4-126629 are preferably used.

In the step of forming the grains of the photosensitive silver halide emulsion of the present invention, a rhodan salt, ammonia, a tetra-substituted thioether compound or a silver halide solvent may be used as a silver halide solvent.
An organic thioether derivative described in 1,386 or a sulfur-containing compound described in JP-A-53-144319 can be used.

Regarding other conditions, see "Physics and Chemistry of Photography" by Grafkid, published by Paul Monte (P. Glaf).
kides, Chemie et Phisique Photographique, Paul Mont
el, 1967), Duffin's "Photographic Emulsion Chemistry", published by Focal Press (GFDuffin, Photographic Emulsion Chemi).
stry, Focal Press, 1966), "Manufacture and Coating of Photographic Emulsions", by Zerikman et al., Published by Focal Press (VLZelikm).
an et al., Making and Coating Photographic Emalusio
n, Focal Press, 1964). That is, any of an acidic method, a neutral method, and an ammonia method may be used, and the method of reacting the soluble silver salt soluble halide may be any of a one-side mixing method, a double-mixing method, and a combination thereof. In order to obtain a monodisperse emulsion, a simultaneous mixing method is preferably used. An inverse mixing method in which 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 control double jet method in which the pAg in a liquid phase in which silver halide is formed is kept constant can also be used.

Further, in order to accelerate the grain growth, the addition concentration, the addition amount and the addition speed of the silver salt and the halogen salt to be added may be increased (JP-A-55-142329 and JP-A-55-158, JP-A-55-142329). 124, U.S. Pat. No. 3,650,575). Further, the method of stirring the reaction solution may be any known stirring method. The temperature and pH of the reaction solution during the formation of silver halide grains may be set as desired. The preferred pH range is between 2.2 and 7.0, more preferably between 2.5 and 6.0.

The photosensitive silver halide emulsion is usually a chemically sensitized silver halide emulsion. For the chemical sensitization of the photosensitive silver halide emulsion of the present invention, a sulfur sensitization method, a selenium sensitization method, a chalcogen sensitization method such as a tellurium sensitization method, gold, platinum, and the like, which are known for an emulsion for a normal type light-sensitive material, are used. A noble metal sensitization method and a reduction sensitization method using palladium or the like can be used alone or in combination (for example, see JP-A-3-11055).
No. 5, Japanese Patent Application No. 4-75,798). These chemical sensitizations can be carried out in the presence of a nitrogen-containing heterocyclic compound (Japanese Patent Application Laid-Open No. 62-253,159). Further, an antifoggant described later can be added after the completion of the chemical sensitization. Specifically, JP-A-5-45,833 and JP-A-62-4
0,446 can be used. The pH at the time of chemical sensitization is preferably 5.3 to 10.5, more preferably 5.5 to 8.5, and the pAg is preferably 6.0.
１10.5, more preferably 6.8 to 9.0. 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.

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

The additives used in such a process and the known photographic additives which can be used in the present invention are described in the above-mentioned RD.
No. 17, 643; 18,716 and N
o. 307 and 105, and the corresponding portions are summarized in the following table. Type of additive RD17643 RD18716 RD307105 1. Chemical sensitizer page 23 page 648 right column page 866 2. Sensitivity increasing agent, page 648, right column 3. Spectral sensitizers, pages 23 to 24, page 648, right column 866 to 868, super sensitizers, page 649, right column Brightener page 24 page 648 right column page 868 5. 5. Fogging prevention page 24-25 page 649 right column 868-870 page Agents, stabilizers 6. Light absorbers, pages 25 to 26, page 649, right column, page 873, filter dyeing, page 650, left column, ultraviolet absorbers. 7. Dye image page 25 page 650 left column page 872 stabilizer 8. Hardening agent page 26 page 651 left column 874-875 Binder page 26 page 651 left column pages 873 to 874 10. Plasticizer, page 27, page 650, right column, page 876, lubricant 11. Coating aid, pages 26 to 27, page 650, right column, pages 875 to 876 Surfactant 12. 12. Static 27 pages 650 right column 876-877 Inhibitors Matting agent 878-879

As the binder for the constituent layers of the photosensitive material and the dye fixing element, hydrophilic binders are preferably used. Examples thereof include those described in the above-mentioned Research Disclosure and JP-A-64-13546, pages (71) to (75). Specifically, a transparent or translucent hydrophilic binder is preferable. For example, proteins such as gelatin and gelatin derivatives, other animal proteins (eg, egg white, egg yolk, casein, whey protein, etc.) or cellulose derivatives, starch, Arabic Examples include natural compounds such as polysaccharides such as rubber, dextran and pullulan, and synthetic polymer compounds such as polyvinyl alcohol, polyvinylpyrrolidone and acrylamide polymer. In particular, polyvinyl alcohol or a copolymer of vinyl alcohol and a vinyl monomer having a carboxylic acid group and those whose terminals are alkyl-modified are preferably used for the purpose of improving the stability of dispersions such as emulsions and latexes. U.S. Pat. No. 4,960,681;
No. 45,260, etc., that is, a homopolymer of a vinyl monomer having —COOM or —SO ₃ M (M is a hydrogen atom or an alkali metal), or a copolymer of the vinyl monomers with each other or with another vinyl monomer Copolymers (for example, sodium methacrylate, ammonium methacrylate, Sumikagel L- manufactured by Sumitomo Chemical Co., Ltd.)
5H) is also used. These binders can be used in combination of two or more kinds. Particularly preferred is a combination of gelatin and the above binder, and gelatin is lime-treated gelatin, acid-treated gelatin,
What is necessary is just to select from what is called demineralized gelatin which reduced the content of calcium etc., and it is also preferable to use it in combination. It is also possible to constitute a binder free of so-called gelatin which does not use any gelatin.

When a system for performing thermal development by supplying a small amount of water is used, the use of the above superabsorbent polymer makes it possible to rapidly absorb water. When a polysaccharide is used in the dye-fixing layer or its protective layer as described in Japanese Patent Application No. 5-181,413 or superabsorbent polymer, polyvinyl alcohols or the like, the dye is transferred from the dye-fixing element to another dye-fixing element. It is possible to prevent retransfer to an object. In the present invention, the coating amount of the binder is 1
It is preferably 20 g or less per m ² , particularly preferably 10 g or less, and more preferably 7 g or less.

In the present invention, an organic metal salt can 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. The acetylene silver described in U.S. Pat. No. 4,775,613 is also useful. Two or more organic silver salts may be used in combination. The above-mentioned organic silver salt is used in an amount of 0.01 per mole of photosensitive silver halide.
10 to 10 mol, preferably 0.01 to 1 mol, can be used in combination. The total coating amount of the photosensitive silver halide and the organic silver salt is 0.05 to 10 g / m ^{2 in} terms of silver, preferably 0.1 to 0.1 g / m ² .
To 4 g / m ² are suitable.

As the reducing agent used in the present invention, those known in the field of photothermographic materials can be used. Further, a dye-providing compound having a reducing property described later is also included (in this case, another reducing agent may 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. U.S. Pat. No. 4,500,626 is an example of a reducing agent used in the present invention.
Columns 49-50, 4,839,272, 4,330,617, 4,590,152, 5,017,454, 5,139,919, Nos. 60-140,335, pages (17)-(18),
No. 57-40, 245, No. 56-138, 736,
59-178,458, 59-53,831,
59-182,449, 59-182,450
Nos. 60-119,555 and 60-128,43
No. 6, No. 60-128, 439, No. 60-198, 5
No. 40, No. 60-181, No. 742, No. 61-259,
No. 253, No. 62-244, 044, No. 62-13
No. 1,253, No. 62-131, No. 256, No. 64-1
No. 3,546, pages (40) to (57), JP-A-1-1
20,553 and EP 220,746 A2, pp. 78-96, and the like. Various combinations of reducing agents, such as those disclosed in U.S. Pat. No. 3,039,869, can also be used.

When a diffusion-resistant reducing agent is used, an electron transfer agent and / or an electron transfer agent may be used, if necessary, in order to promote electron transfer between the diffusion-resistant reducing agent and the developable silver halide.
Alternatively, an electron transfer agent precursor can be used in combination. Particularly preferably, said US Patent No. 5,139,
No. 919 and European Patent Publication No. 418,743 are used. JP-A-2-230143, JP-A-2-230143;
A method of stably introducing the compound into the layer as described in JP-A-235,044 is preferably used. The electron transfer agent or its precursor can be selected from the above-mentioned reducing agents or its precursors. The electron transfer agent or its precursor is a reducing agent (electron donor) whose mobility is resistant to diffusion.
Desirably larger. A particularly useful electron transfer agent is 1
-Phenyl-3-pyrazolidones or aminophenols. The diffusion-resistant reducing agent (electron donor) to be used in combination with the electron transfer agent may be any one which does not substantially move in the layer of the light-sensitive material among the aforementioned reducing agents, and is preferably a hydroquinone, Sulfonamidophenols, sulfonamidonaphthols, JP-A-53-110
No. 827; U.S. Pat. Nos. 5,032,487;
Compounds described as electron donors in JP-A Nos. 26,634 and 4,839,272 and dye-donor compounds having diffusion resistance and reducing property described later are mentioned. Also, an electron donor precursor described in JP-A-3-160,443 is preferably used. Further, the above-mentioned reducing agent can be used in the intermediate layer and the protective layer for various purposes such as prevention of color mixing and improvement of color reproduction. Specifically, European Patent Publication No. 5
Nos. 24,649 and 357,040, JP-A-4-24.
Nos. 9,245 and 2-46,450, JP-A-63-1
No. 86,240 are preferably used. Japanese Patent Publication No. 3-63,733 and Japanese Patent Application Laid-Open No. 1-150,13.
No. 5, 2-46,450, 2-64,634,
No. 3-43,735, European Patent Publication No. 451,833
A development inhibitor releasing reducing compound as described in JP-A No. 10-216, can also be used. In the present invention, the total amount of the reducing agent is from 0.01 to 20 mol, preferably from 0.1 to 10 mol, per mol of silver.
Is a mole.

In the present invention, silver can be used as an image forming substance. In addition, when silver ions are reduced to silver under high temperature conditions, they may contain a compound that generates or releases a mobile dye corresponding to this reaction or vice versa, that is, contains a dye-donating compound. it can. First, examples of the dye-donating compound that can be used in the present invention include a compound (coupler) that forms a dye by an oxidative coupling reaction. The coupler may be a 4-equivalent coupler or a 2-equivalent coupler. Further, a 2-equivalent coupler which has a diffusion-resistant group as a leaving group and forms a diffusible dye by an oxidative coupling reaction is also preferable. The diffusion resistant group may form a polymer chain.
Specific examples of color developers and couplers are described in T.W. H. Jam
es, "The Theory of the Pho
toggressive process "4th edition 291-
Pages 334 and 354 to 361, RD-307,10
No. 5, p. 871, JP-A-58-123,533, ibid.
8-149,046, 58-149,047, 59-111,148, 59-124,399,
Nos. 59-174,835 and 59-231,539
No. 59-231,540, No. 60-2,950
No. 60-2,951, No. 60-14,242,
Nos. 60-23,474, 60-66,249 and the like.

As another example of the dye donating compound,
Compounds having a function of releasing or diffusing a diffusible dye in an image form can be mentioned. This type of compound can be represented by the following general formula [LI]. ((Dye) m-Y) n-Z [LI] Dye represents a dye group, a temporarily shortened dye group or a dye precursor group, Y represents a simple bond or linking group, and Z represents an image A difference in the diffusivity of the compound represented by ((Dye) m-Y) n-Z corresponding to or inversely corresponding to a photosensitive silver salt having a latent image, or (Dye) m
-Y, and released (Dye) m-Y and ((Dy)
e) m-Y) n-Z represents a group having a property that causes a difference in diffusibility, m represents an integer of 1 to 5, n represents 1 or 2, m, n Are not 1, both Dyes 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 items (1) to (4) are for forming a diffusible dye image (positive dye image) in reverse correspondence to the development of silver halide.
Is to form a diffusible dye image (negative dye image) corresponding to the development of silver halide.

US Pat. Nos. 3,134,764, 3,362,819, 3,597,200, 3,544,545, 3,482,972, and JP-B-3-68. No. 3,387, etc., a dye developer in which a hydroquinone-based developer and a dye component are linked. This dye developer is diffusible in an alkaline environment, but becomes non-diffusible when reacted with silver halide.

As described in US Pat. No. 4,503,137, a non-diffusible compound which releases a diffusible dye in an alkaline environment but loses its ability when reacted with silver halide can be used. . Examples thereof include compounds which release a diffusible dye by an intramolecular nucleophilic substitution reaction described in US Pat. No. 3,980,479, and isoxazolone described in US Pat. No. 4,199,354. Compounds that release a diffusible dye by an intramolecular ring rewinding reaction are included.

US Pat. No. 4,559,290, EP 220,746 A2, US Pat. No. 4,783,
No. 396, published technical report 87-6, 199, Japanese Unexamined Patent Publication No. 64-1
As described in JP-A-3,546 and JP-A-6-301,181, non-diffusible compounds which react with a reducing agent remaining without being oxidized by development to release a diffusible dye can also be used.

As an example, see US Pat. No. 4,139,
No. 389, No. 4,139,379, JP-A-59-18.
Compounds which release a diffusible dye by a nucleophilic substitution reaction in the molecule after reduction described in U.S. Pat. No. 4,232,10
7, JP-A-59-101,649, JP-A-61-88,
No. 257, RD 24,025 (1984) and the like, compounds which release a diffusible dye by an electron transfer reaction in a molecule after being reduced, West German Patent No. 3,008,58
No. 8A, JP-A-56-142,530, U.S. Pat. Nos. 4,343,893 and 4,619,884, etc., after releasing a single bond to release a diffusible dye. A nitro compound which releases a diffusible dye after electron acceptance described in U.S. Pat. No. 4,450,223, etc .; and a nitro compound which diffuses after electron acceptance described in U.S. Pat. No. 4,609,610. Compounds that release a dye are included.

Further, as more preferable examples, European Patent No. 220,746A2, Japanese Patent Publication No. 87-6,199,
U.S. Pat. No. 4,783,396, JP-A-63-20
No. 1,653, No. 63-201, No. 654, No. 64-1
No. 3,546, etc., an NX bond (X
Oxygen, a sulfur or nitrogen atom) with a compound having an electron withdrawing group, SO ₂ -X (X in one molecule described in JP-A No. 1-26,842 is as defined above) and electron attracting A compound having a PO-X bond (X is as defined above) and an electron-withdrawing group in one molecule described in JP-A-63-271,344;
No. 41, a C—X ′ bond (X ′ is X
Synonymous or or -SO ₂ - compound having an electron withdrawing group and are expressed) can be mentioned. Also, JP-A-1-161,23
Nos. 7 and 1-161,342, compounds capable of releasing a diffusible dye by cleavage of a single bond after reduction by a π bond conjugated to an electron accepting group can also be used. Among them, a compound having an NX bond and an electron-withdrawing group in one molecule is particularly preferable.

A compound (DDR coupler) which is a coupler having a diffusible dye as a leaving group and which releases a diffusible dye upon reaction with an oxidized reducing agent. Specifically, British Patent No. 1,330,524, JP-B-48-39,165,
U.S. Pat. Nos. 3,443,940 and 4,474,86
No. 7, No. 4,483,914 and the like.

A compound (DRR compound) which is reducible to silver halide or an organic silver salt and releases a diffusible dye when the partner is reduced. Since this compound does not need to use another reducing agent, it is preferable because there is no problem of image contamination due to oxidized decomposition products of the reducing agent. Representative examples are U.S. Pat. Nos. 3,928,312 and 4,053,312,
4,055,428 and 4,336,322, JP-A-59-65,839, JP-A-59-69,839,
No. 53-3,819, No. 51-104,343, R
D17,465, U.S. Pat. No. 3,725,062,
Nos. 3,728,113 and 3,443,939, JP-A-58-116,537 and 57-179,840
JP-A-6-301,179 and JP-A-6-301,18
No. 0, U.S. Pat. No. 4,500,626 and the like. No. 2 of U.S. Pat. No. 4,500,626.
Compounds described in Columns 2 to 44 and 4,639,40
The compounds described in No. 8, columns 37 to 39 are useful. Other examples of the above-mentioned couplers and dye-donating compounds other than the general formula [LI] include dye silver compounds obtained by combining an organic silver salt and a dye (Research Disclosure Magazine, May 1978, pages 54 to 58, etc.); Azo Dyes Used in Thermally Developed Silver Dye Bleaching Method (U.S. Pat. No. 4,235,957, Research Disclosure, April 1976, 3)
0-32 etc.), leuco dyes (US Pat. No. 3,985,
Nos. 565 and 4,022,617), and a nondiffusible dye donating compound having a heterocyclic ring containing a nitrogen atom, a sulfur atom or a selenium atom (JP-A-59-180548).

Hydrophobic additives such as a dye-donating compound and a diffusion-resistant reducing agent can be introduced into a layer of a light-sensitive material by a known method such as the method described in US Pat. No. 2,322,027. In this case, U.S. Pat.
470, 4,536,466, 4,536,4
Nos. 67, 4,587,206 and 4,555,47
No. 6,4,599,296, JP-A-63-306,
No. 439, No. 62-8, 145, No. 62-30, 24
No. 7, JP-B-3-62,256 and the like can be used in combination with a low-boiling organic solvent having a boiling point of 50 ° C to 160 ° C, if necessary. Two or more of these dye-donating compounds, nondiffusible reducing agents, high-boiling organic solvents, and the like can be used in combination. The amount of the high boiling organic solvent is 1 to 1 g of the dye donating compound used.
0 g or less, preferably 5 g or less, more preferably 1 g to
0.1 g. 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.

JP-B-51-39,853, JP-A-51-3985
A dispersion method using a polymer described in JP-A-59,943 can also be used. For compounds that are substantially insoluble in water,
In addition to the above-mentioned method, fine particles can be dispersed and contained in a binder. When dispersing the hydrophobic compound in the hydrophilic colloid, various surfactants can be used. For example, Japanese Unexamined Patent Publication No. 59-157,636 (37)
To (38), the surfactants described in the above-mentioned Research Disclosure can be used.
Further, a so-called polymer dispersant can also be used. Japanese Patent Application Nos. 5-204,325 and 6-19,247
And a phosphate ester type surfactant described in West German Patent Publication No. 1,932,299A.

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, various dyes and colorants are fixed or made colorless in the constituent layers of the light-sensitive material of the present invention to improve the white background of the obtained image. Compounds can be added. Specifically, compounds described in EP-A-353,741, EP-A-461,416, JP-A-63-163,345 and JP-A-203,158 can be used.

Various pigments and dyes can be used in the constituent layers of the light-sensitive material of the present invention for the purpose of improving color separation and increasing sensitivity. Specifically, the compounds described in Research Disclosure, and EP-A-479,167.
No. 502,508, JP-A-1-167,838
Nos. 343,355, 2-168,252, JP-A-61-20,943, and Japanese Patent Application No. 5-149,713.
And the like.

In a system for forming an image by diffusion transfer of a dye, a dye fixing element is used together with a photosensitive 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 used in the present invention has at least one layer containing a mordant. As the mordant, those known in the field of photography can be used, and specific examples thereof are U.S. Pat. No. 4,500,626, columns 58 to 59, and JP-A-61-88,256, (32) to (41). ) And mordants described in JP-A-1-161,236, pages (4) to (7), JP-A-62-244043 and JP-A-6-24403.
No. 6 and the like. Further, a dye-receiving polymer compound as described in U.S. Pat. No. 4,463,079 may be used.

The binder used in the dye-fixing element of the present invention is preferably the above-mentioned hydrophilic binder. Further, it is preferable to use carrageenans and polysaccharides such as dextran as described in EP-A-443,529 in combination.

The dye-fixing element can be provided with auxiliary layers 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 high boiling organic solvent can be used as a plasticizer, a slipping agent, an anti-curl agent or an agent for improving the releasability of the light-sensitive material and the dye-fixing element. Specifically, there are those described in the above-mentioned Research Disclosure and JP-A-62-245253. 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. As examples thereof, various modified silicone oils described in "Modified Silicone Oil" Technical Document P6-18B issued by Shin-Etsu Silicone Co., Ltd., particularly carboxy-modified silicone (trade name: X-22-3710) are effective. JP-A-62-215953;
The silicone oil described in 6,449 is also effective.

An anti-fading agent may be used for 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-61-159,644 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), and benzophenone-based compounds (Japanese Unexamined Patent Publication No. 2,78
No. 4, etc.), and JP-A Nos. 54-48,535 and 6
There are compounds described in 2-136,641 and 61-88,256. Also, JP-A-62-260152
The UV-absorbing polymer described in the above item is also effective. Examples of metal complexes include U.S. Pat. Nos. 4,241,155 and 4,2,155.
No. 45,018, columns 3-36, 4,254,195
Nos. 3 to 8; JP-A Nos. 62-174, 741, 61;
Nos. 88-256, pp. 27-29, pp. 63-19
9,248, JP-A-1-75,568, 1-7
No. 4,272, and the like.

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 supplied to the dye-fixing element from outside such as a light-sensitive material. You may. For the same purpose, as described in JP-A-6-118,592, two or more polymers coexist in the mordant layer to control the balance of hydrophilicity / hydrophobicity and the polarity of the presence of microscopic dyes. It is also effective. As the combination of the polymers to be phase-separated, for example, gelatin and dextran, PVA and gelatin, polyimidazole and polyacrylic acids, PEG and gelatin are effective. 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, it is preferable to incorporate a fluorescent whitening agent into the dye-fixing element or to supply it from outside such as a photosensitive material. As an example, K.K. Veenkataraman
Hen "The Chemistry of Synthe
tic 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 a fading inhibitor or an ultraviolet absorber. Specific examples of these anti-fading agents, ultraviolet absorbers, and fluorescent whitening agents are disclosed in
Nos. 215, 272 (125) to (137) and JP-A-1-161, 236 (17) to (43).

Examples of the hardening agent used in the constituent layers of the light-sensitive material and the dye-fixing element include the aforementioned Research Disclosure,
U.S. Pat. No. 4,678,739, column 41, 4,795;
1,042, JP-A-59-116,655, 62
And hardening agents described in JP-A Nos. 245,261, 61-18,942, and JP-A-4-218,044.
More specifically, aldehyde hardeners (such as formaldehyde), aziridi hardeners, epoxy hardeners, and vinyl sulfone hardeners (N, N'-ethylene-bis (vinylsulfonylacetamide)) Ethane), an N-methylol hardener (such as dimethylol urea), or a polymer hardener (compounds described in JP-A-62-234157). These hardeners are used in an amount of 0.001 to 1 g, preferably 0.01 g, per 1 g of gelatin applied.
05-0.5 g are used. Further, the layer to be added may be any layer of the constituent layers of the photosensitive material or the dye fixing element,
It may be added in two or more layers. In the absence of gelatin, 0.01 g of the polymer compound reacted with the hardener was used.
01 to 1 g are used.

In the constituent layers of the light-sensitive material and the dye-fixing element, various antifoggants or photographic stabilizers and precursors thereof can be used. Specific examples thereof include the aforementioned Research Disclosure, U.S. Pat. Nos. 5,089,378, 4,500,627, 4,614,702, and JP-A-64-13546 (7). Pages (9), (57) to (71) and (8)
1) to (97), U.S. Pat. No. 4,775,610,
Nos. 4,626,500 and 4,983,494, JP-A-62-174,747 and JP-A-62-239,148.
No., JP-A-1-150,135 and 2-110,55
7, RD 178,650 and RD 17,643 (1
978) (24)-(25). These compounds are 5 × 10 ^-6 per mole of silver.
To 1 × 10 ⁻¹ mol, more preferably 1 × 10 ⁻⁵ to 1 ×
10 ^-2 mol is preferably used.

In the constituent layers of the light-sensitive material and the dye-fixing element, various surfactants are used for the purpose of coating aid, improvement of releasability, improvement of sliding property, prevention of static charge, acceleration of development, stabilization of dispersion, and the like. Can be. Specific examples of surfactants can be found in the research
Disclosure, JP-A-62-173,463,
62-183,457. Also,
For the purpose of stabilizing the dispersion, an oligomer type polymer surfactant is preferably used. 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 static charge, and improving releasability. Representative examples of the organic fluoro compound include JP-B-57-9053, columns 8 to 17, JP-A-61-20944, and JP-A-62-1.
Fluorinated surfactants described in 35826 and the like,
Or hydrophobic fluorine compounds such as oily fluorine compounds such as fluorine oil or solid fluorine compound resins such as ethylene tetrafluoride resin.

A matting agent can be used for 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 compounds described in the aforementioned Research Disclosure can be used.

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 described in JP-A-61-88256, pages (26) to (32), JP-A-3-11,338, and JP-B-2-51,496.

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, Lossen rearrangement or Beckmann rearrangement. A specific example is described in U.S. Pat.
Nos. 4,493, 4,657,848 and the like. In a system in which thermal development and transfer of a dye are carried out simultaneously in the presence of a small amount of water, it is preferable to include a base and / or a base precursor in the dye-fixing element from the viewpoint of improving the storability of the photosensitive material.

In addition to the above, European Patent Publication 210,660
No. 4,740,445, a combination of a compound (hereinafter referred to as a complex-forming compound) capable of forming a complex with a metal ion constituting the hardly-soluble metal compound, Compounds that generate a base by electrolysis described in JP-A 61-232,451 can also be used as the base precursor. In particular, the former method is effective. The sparingly soluble metal compound and the complex forming compound are advantageously added separately to the light-sensitive material and the dye-fixing element.

In the present invention, various development stopping agents can be used in the light-sensitive material and / or the dye-fixing element for the purpose of always obtaining a constant image with respect to fluctuations 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. 3,159, pages (31) to (32).

In the present invention, as a support for the light-sensitive material and the dye-fixing element, those which can withstand the processing temperature are used. In general, edited by the Photographic Society of Japan, "Basics of Photonic Engineering-Silver Halide Photography-", published by Corona Co., Ltd. (1979)
Photographic supports such as papers and synthetic polymers (films) described on pages (223) to (240). Specifically, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyvinyl chloride, polystyrene, polypropylene, polyimide, celluloses (for example, triacetyl cellulose) or those containing pigments such as titanium oxide in these films, and further, Film-processed synthetic paper made from polypropylene, etc., mixed paper made from synthetic resin pulp such as polyethylene and natural pulp, Yankee paper, baryta paper, coated paper (especially cast-coated paper), metal, cloth, glass, Ceramic or the like is used. These can be used alone, or a support laminated on one or both sides with a synthetic polymer such as polyethylene, PET, polyester, or polystyrene can be used.

In addition, JP-A-62-253,159, pages (29) to (31), JP-A-1-161,236, pages (14) to (17), and JP-A-63-316,848.
JP-A-2-22,651, JP-A-3-56,955
And the supports described in U.S. Pat. No. 5,001,033. 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. It is also preferable to coat a polymer such as gelatin or PVA on the surface of the support in advance for the purpose of improving the wettability of the coating solution and the adhesion between the coated film and the support.

The thickness of the support varies depending on the purpose of use, but is usually 40 μm or more and 400 μm or less. However, in the case of a method in which an image is formed using an element applied on two or more separate supports, the non-image-side support on the element ultimately has a thinner support than the aforementioned range. A body (5 μm or more and 250 μm or less) is preferably used. As such a thin support, for example, PET
A film on which aluminum is deposited is used.

Particularly when heat resistance and curl characteristics are strictly required, a support for a photosensitive material is disclosed in JP-A-6-41281.
No. 6-43581, No. 6-51426, No. 6-
No. 51437, No. 51442, Japanese Patent Application No. 4-25184
No. 5, 4-231825, 4-253545,
4-258828, 4-240122, 4-
No. 221538, No. 5-21625, No. 5-1592
6, No. 4-331919, No. 5-199704,
The supports described in JP-A-6-13455 and JP-A-6-14666 can be preferably used.

As a method of exposing and recording an image on a photosensitive material, for example, a method of directly photographing a landscape or a person using a camera or the like, a method of exposing through a reversal film or a negative film using a printer or a 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 via an electric signal, a method of exposing image information to a CRT, a liquid crystal display, There is a method of outputting an image to an image display device such as an electroluminescence display or a plasma display and exposing the image directly or via an optical system.

As a light source for recording an image on a photosensitive material,
As described above, U.S. Pat. No. 4,500,626, column 56, natural light, tungsten lamp, light emitting diode, laser light source, CRT light source, etc., JP-A-2-53,37.
No. 8, 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. 6-40164, 6-40012, 6-42732, 6-86919, and 6-869.
Exposure apparatuses described in Nos. 20, 6-93421, 6-94820, 6-96628, and 6-149609 can be preferably used.

Image exposure can also be performed using a wavelength conversion element in which a non-linear optical material and a coherent light source such as laser light are combined. Here, the non-linear optical material is a material capable of exhibiting nonlinearity between polarization and electric field that appears when a strong optical electric field such as laser light is applied, and includes lithium niobate, potassium dihydrogen phosphate (KD)
P), inorganic compounds such as lithium iodate, BaB ₂ O ₄ , urea derivatives, nitroaniline derivatives, for example, nitropyridine-N such as 3-methyl-4-nitropyridine-N-oxide (POM) -Oxide derivatives, JP-A-61-53462 and JP-A-62-121032.
The compounds described in (1) 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. In addition, the image information includes an image signal obtained from a video camera, an electronic still camera, and the like, and the Nippon Television Signal Standard (NTS).
A television signal represented by C), an image signal obtained by dividing an original image into a large number of pixels such as a scanner, and an image signal created by using a computer represented by CG and CAD can be used.

The light-sensitive material and / or dye-fixing element of the present invention can be used for various purposes. For example, the dye fixing element after the heat development transfer can be used as a positive or negative color print material. Also, by using a photosensitive material using a mixture of a black dye-donating substance and each of yellow, magenta, and cyan dye-donating substances, a printing material such as a black-and-white positive-type or negative-type printing material or a lithographic material. Alternatively, it can be used as a radiographic material. In particular, when used as a material for printing from photographic materials, JP-A-6-163450 and 4-33.
Using imaging materials with information recording capability as in 8944,
It is preferred that the photosensitive material of the present invention is exposed to light and developed and transferred to form a print on the dye-fixing element of the present invention. As this printing method, Japanese Patent Application Laid-Open No.
-19364 and 5-19363 can be used. The photosensitive material after the heat development transfer can be used as a photographing material by appropriately desilvering the photosensitive material. In that case, as a support, for example,
No. 24645, No. 5-40321, No. 6-35092
It is preferable to record photographic information and the like using a support having a magnetic layer described in Japanese Patent Application No. 5-58221 and Japanese Patent Application No. 5-106979. The light-sensitive material and / or dye-fixing element of the present invention may have a form having a conductive heating element layer as a heating means for heat development and diffusion transfer of dye. In this case, the heat generating element is disclosed in JP-A-61-1.
Nos. 45 and 544 can be used. The heating temperature in the heat development step is about 50 ° C. to 250 ° C., and particularly about 60 ° C. to 180 ° C. is useful. The dye diffusion transfer 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 process is
Transfer can be performed at a temperature in the range from the temperature in the heat development step to room temperature.
Temperatures lower by ° C are preferred.

Although the transfer of the dye is caused only by heat,
Solvents may be used to promote dye transfer. Also,
U.S. Pat. Nos. 4,704,345 and 4,740,44
No. 5, JP-A-61-238,056, etc., 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. In this method, the heating temperature is preferably 50 ° C. or higher and the boiling point of the solvent or lower. For example, when the solvent is water, the temperature is preferably 50 ° C. to 100 ° C. Examples of the solvent used for accelerating the development and / or for diffusing and transferring the dye include water, a basic aqueous solution containing an inorganic alkali metal salt and an organic base (these bases are described in the section of the image formation accelerator). Described are used), a low-boiling solvent or a mixed solution of a low-boiling solvent and water or the basic aqueous solution. Further, a surfactant, an antifoggant, a compound forming a complex with a hardly soluble metal salt, a fungicide, and a bactericide may be contained in the solvent. Water is preferably used as a solvent used in these steps of thermal development and diffusion transfer, and any water may be used as long as it is generally used. Specifically, distilled water, tap water, well water, mineral water, and the like can be used. Further, in the heat developing apparatus using the photosensitive material and the image receiving element of the present invention, water may be used up, or it may be circulated and used repeatedly. In the latter case, water containing components eluted from the material will be used. Also, JP-A-63-
144,354, 63-144,355, 62
-38,460, JP-A-3-210,555 and the like or water may be used.

These solvents can be applied to the light-sensitive material, the dye-fixing element or both. The amount used may be not more than the weight of the solvent corresponding to the maximum swelling volume of the entire coating film. Examples of the method of applying water include, for example, JP-A-62-253,159, page (5), and JP-A-63-253,159.
The method described in No. 85,544 or the like is preferably used.
Further, the solvent can be used by being encapsulated in a microcapsule or incorporated in the photosensitive material or the dye-fixing element or both in advance in the form of a hydrate. As described in JP-A-63-85,544 and the like, the temperature of the applied water is 3
The temperature may be 0 ° to 60 ° C.

In order to promote the dye transfer, a method in which a hydrophilic heat solvent which is solid at normal temperature and dissolves at high temperature is incorporated in the photosensitive material and / or the dye fixing element can be adopted. The layer to be incorporated may be any of a light-sensitive silver halide layer, an intermediate layer, a protective layer and a dye fixing layer, but is preferably a dye fixing layer and / or an adjacent layer. Examples of hydrophilic thermal solvents include ureas, pyridines, amides, sulfonamides, imides, alcohols, oxidants, and other heterocycles.

The heating method in the development and / or transfer step includes contacting with a heated block or plate, heating plate, hot presser, heating roller, heating drum, halogen lamp heater, infrared and far infrared lamp heater. For example, or by passing through a high-temperature atmosphere. A method of superposing a light-sensitive material and a dye-fixing element is described in JP-A-62-253159 and JP-A-6-253159.
The method described on page 1-147,244 (27) can be applied.

For processing the photographic element of the present invention, any of various heat developing apparatuses can be used. For example, JP-A-59-7
Nos. 5,247, 59-177,547, 59-1
81,353, 60-18,951, Shokai 62
-25,944, Japanese Patent Application No. 4-277,517, 4
-243,072, 4-244,693, 6-
Devices described in JP-A-164421 and JP-A-6-164422 are preferably used. As a commercially available device, there is a Pictrostat 10 manufactured by Fuji Photo Film Co., Ltd.
0, Pictrostat 200, Pictrostat 3
00, Pictography 3000, and Pictography 2000 can be used.

[0074]

EXAMPLES The present invention will be described below with reference to examples.
The present invention is not limited to these. First, Table 1,
A dye fixing material R101 having the structure shown in Table 2 was prepared. Further, the types, amounts and positions of the compounds of the present invention were changed as shown in Table 3 to prepare image receiving materials R102 to R108.

[0075]

[Table 1]

[0076]

[Table 2]

[0077]

Embedded image

[0078]

Embedded image

[0079]

Embedded image

[0080]

Embedded image

[0081]

[Table 3]

Using the above dye-fixing material, an image was output using a photosensitive material and an apparatus of a digital color printer FUJICS PICTROGRAPHY PG3000 manufactured by Fuji Photo Film Co., Ltd. At this time, the image was output so that the image density at the peripheral portion and the central portion was the lowest so that the discoloration at the peripheral portion of the output dye fixing material could be easily confirmed. For the output image, the minimum density at the center and the minimum density at the
It measured using the reflection densitometer X-Rite304 made by Rite.
The output image is 30 degrees 5 for further comparison of discoloration.
The minimum density of the central part and the peripheral part was measured in the same manner as before after leaving for one year under the condition of 0% RH, and the degree of discoloration was evaluated. The H value was used as an index of discoloration. H value = (Yellow density of peripheral portion after standing / Yellow density of peripheral portion before leaving) / (Yellow density of central portion after leaving / Yellow density of central portion before leaving) (The larger the H value, the peripheral portion Large degree of discoloration)

Table 4 shows the obtained results.

[0084]

[Table 4]

As described above, it can be seen that in the dye-fixing material of the present invention, there is little discoloration of the peripheral portion after aging. Similar effects were also observed when a similar experiment was performed using the Pictrostat 330 as an apparatus and PS-DS as the photothermographic material. Further, the compound of the present invention was not added to the dye-fixing material, but was used after being used in the photothermographic materials described in Examples and Comparative Examples of Japanese Patent Application No. 08-115137 and subjected to heat development processing. The effect was obtained for the image, but the improvement was little. Further, in the above-mentioned experiment, an improvement effect was observed even when the compound of the present invention was not added to the dye-fixing element but was added to water used for image formation.

Claims (2)

[Claims] 1. A dye-fixing element containing a mordant and a base and / or a base precursor on at least one surface of a support, wherein the dye-fixing element has the following general formula (1):
A dye-fixing element comprising at least one compound represented by the formula: General formula (1) In the formula, R ^{1 to} R ⁴ represent the same or different alkyl groups having 1 to 4 carbon atoms, and X represents a divalent hydrocarbon group having 15 or less carbon atoms. 2. A non-diffusible dye which emits or forms a diffusible dye on a support at least corresponding to a photosensitive silver halide, a reducing agent, and a reaction in which silver halide is reduced to silver. An image in which a heat-developable color light-sensitive material containing a donor compound and a binder is heated after image exposure to release a diffusible image-forming dye in an image-like manner and diffuse-transfer this to a dye-fixing layer of a dye-fixing element. In the forming method, the image formation is performed by the general formula (1).
An image forming method, which is carried out in the presence of at least one compound represented by the formula: