JPH0677143B2 - Photosensitive element for color diffusion transfer method - Google Patents

Description

The present invention relates to a photosensitive element for a color diffusion transfer method, and more specifically to a color capable of obtaining an image having a high maximum density and a low minimum density. The present invention relates to a photosensitive element for diffusion transfer method.

[Technical Technique] Generally, a color diffusion transfer method using a non-diffusible dye image forming substance (hereinafter referred to as a DRR compound) is widely known in the art, and related techniques are described in, for example, US Pat. No. 3,928,312. No. 4,135,929, 4,053,312
No. 4,198,235, 4,013,633, 3,954,47
No. 6, No. 3,929,760, No. 4,013,635, No. 4,195,9
No. 93, British Patent No. 1,496,363, Research Disclosure 13024 (1975), No. 15157 (1976), JP-A-55-33141.
No. 55, No. 55-33142, No. 56-16131, No. 56-71032, No. 56
-71060, 56-71061, 57-85055, 57-105738
No. 58-37646 and No. 59-68739.

In the method using the above DRR compound (hereinafter referred to as DRR method), a non-diffusible dye image format material, that is, a layer containing a DRR compound, and a photosensitive silver halide emulsion combined with the DRR compound layer The element is imagewise exposed to form a latent image in the light sensitive silver halide emulsion layer and then processed with an alkaline processing composition in the presence of a silver halide developer. During the processing with this alkaline processing composition, the photosensitive element and the image-receiving layer are in a state of being superposed, and as a result of the processing with the alkaline processing composition, an oxide of a silver halide developer is formed and the DRR compound is It is oxidized to release the diffusible dye or its precursor. The diffusible dye or its precursor released from the DRR compound is transferred to the image-receiving layer by diffusion to form a dye image.

When forming a color transfer image using the DRR method, D
A photographic light-sensitive element having three combinations of an RR compound and a light-sensitive silver halide emulsion layer accompanied therewith is used.
It is necessary that the absorption spectrum of the dye emitted from the R compound and transferred onto the image-receiving layer substantially coincides with the spectral sensitization spectrum of the silver halide emulsion combined with the DRR compound.

At this time, in order to obtain a color image having no color mixture, it is required to react only with the DRR compound in which the oxide of the developer generated by the development of silver halide is combined. Therefore, for the purpose of preventing the oxide of the silver halide developer from diffusing into the DRR compound layer other than the combined DRR compound during development, the oxide of the silver halide developer is not
Providing an intermediate layer containing a non-diffusible dihydroxybenzene compound as a substance capable of competitively reacting with the R compound, Research Disclosure, No. 15
Volume 2, No. 15162 (issued in November 1976).

However, even if a photographic light-sensitive element including an intermediate silver halide emulsion layer combined with a DRR compound and an intermediate layer containing a dihydroxybenzene-based compound as a reducing agent adjacent thereto is prepared, it is effective in preventing color mixing, The dihydroxybenzene compound used as an anti-color mixing agent works competitively with the silver halide developer oxide that should originally react with the DRR compound, often resulting in a decrease in the maximum dye density (Dmax). was there.

Further, the dihydroxybenzene compound is used in an intermediate layer as a color mixing inhibitor, and in a photosensitive element of a type in which a dye image is transferred by being superposed on an image receiving layer after being immersed in an alkaline processing composition. , Due to its function as a reducing agent, is contained in a protective layer overcoated with respect to a silver halide emulsion layer combined with a DRR compound, and during development processing, the silver halide developer is air-oxidized. , As a result, it is known that it is used for the purpose of preventing an undesirable increase in the minimum concentration (Dmin), but in this case also, the maximum concentration (Dmin) is increased for the same reason as when it is contained in the intermediate layer ( Has caused a decrease in Dmax).

In order to prevent these inconveniences, it is considered that the structure, composition, etc. may be selected as the reducing agent so that the degree of reaction with the silver halide developer oxide is appropriate. Not only is it not easy to select according to the composition of the material, but when it is processed as a color diffusion transfer light-sensitive material under various processing temperature conditions, the selection range of the reducing agent changes, and It was practically impossible to obtain the characteristics.

Further, another drawback of a photographic light-sensitive element including a silver halide emulsion layer combined with a DRR compound and an adjacent intermediate layer or protective layer containing a dihydroxybenzene-based compound is a dihydroxybenzene-based compound in the intermediate layer or the protective layer. That is, the minimum density (Dmin) generated by the development process is increased as compared with the photographic element containing no compound.

The cause of this is not clear, but during production of the photographic light-sensitive element or during storage, or during development, diffusion of the dihydroxybenzene-based compound into other layers occurs, and the dihydroxybenzene-based compound is mixed in the silver halide emulsion layer. It is believed that the minimum density is increased as a result of promoting silver halide development. The development promoting action of such a dihydroxybenzene compound on silver halide is described in, for example, French Patent No. 2,414,743. Further, not only the minimum density increases, but also so-called softening of the legs on the characteristic curve occurs at the same time, which is a behavior which is not very desirable for obtaining a good dye image.

OBJECT OF THE INVENTION It is, therefore, an object of the present invention to provide a light-sensitive element for a color diffusion transfer method which can solve the above-mentioned drawbacks and can obtain a good dye image in an image receiving layer. That is, a first object of the present invention is to provide a light-sensitive element for a color diffusion transfer method which can obtain an image having a sufficiently high maximum density and a sufficiently low minimum density.

A second object is to provide a light-sensitive element for the color diffusion transfer method, in which the minimum density is sufficiently low and no softening of the legs of the characteristic curve is observed.

Structure of the Invention The above-mentioned object of the present invention is to oxidize at least one light-sensitive silver halide emulsion layer with an oxide of a silver halide developer under alkaline processing conditions in combination with the emulsion layer. At least one layer containing a non-diffusible dye image-forming substance capable of releasing a diffusible dye or its precursor, and at least one layer containing a dihydroxybenzene compound represented by the following general formula as a developer oxide scavenger: In a light-sensitive element for a color diffusion transfer method including two, a non-light-sensitive hydrophilic colloid containing gelatin as a main component is provided between the light-sensitive silver halide emulsion layer and a developer oxide scavenger-containing layer closest thereto. This is achieved by a light-sensitive element for a color diffusion transfer method provided with a layer.

General formula In the formula, R represents an alkyl group, an aryl group, an alkoxy group, an acyl group, a carbamoyl group, a carboxyl group, a sulfo group or a halogen atom, and n represents an integer of 1 to 4.

[Specific Structure of the Invention] In the light-sensitive element for color diffusion transfer method of the present invention (hereinafter referred to as "light-sensitive element of the present invention"), a photosensitive silver halide emulsion layer and a developer oxide scavenger-containing layer closest thereto are Gelatin is preferably used as the hydrophilic colloid used in the layer having a non-photosensitive hydrophilic colloid as a main component (hereinafter, simply referred to as the separation layer of the present invention) provided therebetween, but other examples include acyl. Gelatin modified with an agent, gelatin grafted with a vinyl polymer, casein, protein such as albumin, cellulose derivative such as hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl cellulose, polyvinyl alcohol or polyvinyl acetate. Partial hydrolyzate, poly vinyl Polymeric non-electrolytes such as lupyrrolidone, polyacrylamide, polyvinyl ethers such as polymethyl vinyl ether, polyacrylic acid, partial hydrolysates of polyacrylamide, anionic synthetic polymers such as copolymers of vinyl methyl ether and maleic acid. Etc. can be used. These hydrophilic colloids can be used alone or in combination. Further, these hydrophilic colloid layers may contain a latex polymer dispersion of a hydrophobic monomer such as an alkyl acrylate.

These hydrophilic colloids, particularly polymers having functional groups such as amino groups, hydroxyl groups and carboxyl groups, can be insolubilized by various curing agents without losing the penetrability of the treating agent. Particularly useful curing agents include, for example, aldehyde compounds such as formaldehyde and mucohalogen acid N, N'-bis (1-aziridine-carbonyl) -hexamethylenediamine, β-bis, vinylsulfonylethane, tetrakis- (vinylsulfonyl). Methyl) methane and the reaction product of potassium β-aminoethyl sulfonate,
N, N ', N "-tri-acryloyl-hexahydro-S-
Triazine and N, N ', N "-tri-acryloyl-hexahydro-s-triazine in combination with N, N'-bis (1-aziridine-carbonyl) -hexamethylenediamine, N, N', N"- Tri-acryloyl-hexahydro-
A combination of s-triazine and β-bis-vinylsulfonylethane can be mentioned. Further, these hydrophilic colloid layers may contain a curing accelerator such as carbonate in addition to the curing agent.

Further, in the separation layer containing the hydrophilic colloid of the present invention as a main component, components generally known to be added to the coating liquid, for example, a surfactant as a coating aid, a thickener, and an ultraviolet absorbing agent are used. Agents and matting agents can be included.

The amount of the hydrophilic colloid used in the separation layer of the present invention varies depending on the materials used and conditions, but is preferably 0 to ² g / m ² , and more preferably 0.2 to 1 g / m ² .

A solid pigment can be used for the separation layer of the present invention, and examples of the solid pigment used include titanium oxide, zinc oxide,
In addition to white pigments such as zirconium oxide, lead white, and zinc sulfide, colored pigments such as cadmium yellow, cobalt green, cobalt blue, and cadmium red, and pearl pigments such as those described in Japanese Patent Publication No. 54-3406. Can be used. Also, silver halide grains (preferably having an average grain size of 0.2 μ or less) that have a sensitivity that is one-tenth or less that of a silver halide emulsion layer and that do not substantially affect the performance of the silver halide emulsion layer. Can be used. The amount of solid pigment used, if necessary, varies depending on the materials used,
Preferably, it is 0 to 3 g / m ² .

The separation layer containing the hydrophilic colloid of the present invention as a main component,
As a scavenger for preventing the increase of the minimum density of the transferred image or the formation of stain due to the diffusion of an excessive diffusible dye or its precursor or impurities into the image receiving layer which is not desirable for the transferred dye image. -1
No. 7435, Japanese Patent Publication No. 59-31699, Japanese Patent Application No. 58-132400, No. 58-
A substantially water dispersible polymeric mordant as described in the specification such as 137293 can be included. The content of such a polymer mordant is 10 to 500 mg / m ² , preferably 20 to 200 m.
It is g / m ² .

Further, a dihydroxybenzene compound similar to that used in the developer oxide scavenger-containing layer described later can be contained in a range not accompanied by the decrease in the maximum density or the increase in the minimum density described above.

The photosensitive silver halide emulsion used in the light-sensitive element of the present invention includes silver chloride, silver bromide, silver chlorobromide, silver iodobromide, silver chloroiodobromide, or a colloidal dispersion of a mixture thereof. Any of these may be used. The average grain size of the silver halide grains in the silver halide emulsion is not particularly limited, but it is useful that it is in the range of about 0.1 μm to about 2 μm. The grain size distribution may be narrow or wide, and the silver halide grain crystal form may be regular such as cubic or octahedral, or irregular such as spherical or tabular. Alternatively, a complex crystal form may be used. It may also consist of a mixture of particles of various crystal forms.

Further, it may be a grain having substantial photosensitivity on the surface or a silver halide grain having inside the grain. For the light-sensitive element of the present invention, either a negative type emulsion or a direct reversal type emulsion can be used.

These silver halide emulsions can be prepared by any known method. That is, any of the acidic method, the neutral method, the ammonia method, etc. may be used, and as a format for reacting the soluble silver salt with the soluble halide, so-called single jet method, double jet method, pAg in the reaction solution, pH, etc. It is also possible to use a so-called controlled double jet method, which is performed while controlling the temperature.

In the process of nucleation or grain growth of silver halide grains, polyvalent metal ions may be allowed to coexist, or a silver halide solvent such as thiocyanate or thioether may be used for physical ripening.

When the DRR compound used in the present invention is used in combination with a negative working silver halide emulsion layer, the dye image obtained on the image receiving layer is negative. Therefore, an inversion method is required to obtain a positive dye image on the image-receiving layer using the DRR compound, and a positive diffusion transfer dye image can be obtained by using various inversion methods.

For example, U.S. Pat.Nos. 3,227,552, 2,592,250, 2,005,837, 3,367,778, 3,761,276,
British Patent No. 1,011,062, Japanese Patent Publication No. 41-17184, Japanese Patent Laid-Open No. 50-
A method using a direct positive type silver halide emulsion as described in 8524 or the like, or British Patent 904,364,
Methods utilizing physical development as described in JP-A-47-325 or JP-B-43-21778, U.S. Pat.
Negative-type containing a compound that releases a development inhibitor by reacting with an oxidized product of a developing agent as an adjacent layer by adding a color image-forming substance to a fogged emulsion layer as described in 3,632,345 A method such as using a silver halide emulsion layer can be used.

As described above, various methods can be used to obtain a positive dye image, but a method using a direct positive type silver halide emulsion is preferable. The direct positive type silver halide emulsion includes, for example, a silver halide emulsion which is preliminarily exposed to light or chemically processed so that the entire surface can be developed, and which is not imagewise developable by imagewise exposure. .

As another direct positive type silver halide emulsion, a direct positive type silver halide emulsion having photosensitivity mainly inside the silver halide grains can be mentioned.

In the present invention, the latter direct positive type silver halide emulsion described in US Pat. No. 3,761,276 is preferred. When this direct positive type silver halide emulsion is imagewise exposed, a latent image is formed mainly inside the silver halide grains, and a positive silver image is formed when surface development is carried out under fog conditions.

There are various methods for development processing under such fog conditions. For example, West German Patent No. 850,383 and US Patent No. 2,497,8
No. 75 etc. A so-called air fog developer may be used, or flash exposure may be applied to the entire surface during development. This method is described in West German Patent No. 854,88.
No. 8, U.S. Patent No. 2,592,298, British Patent No. 1,150,553
No. 1,195,838 and No. 1,187,029. Further, development processing may be carried out in the presence of a fogging agent. Fog agents that can be used for this include hydrazine compounds and N-substituted quaternary ammonium salts, which can be used alone or in combination. As these fogging agents, 1- [4- (2-formylhydrazino) phenyl] -3-phenylthiourea and β-acetylphenylhydrazine in combination with t-butylaminoborane are preferably used. The amount of the fogging agent can be widely varied depending on the purpose, but when it is added to the development processing solution, it is generally 0.1 g to 2.0 g per development processing solution, and when it is added to the photosensitive element, it is 1 m. It is 0.05 mg to 0.1 g per ² parts.

The silver halide emulsion used in the present invention may use a photosensitizing compound such as polyalkylene glycol, a cationic surfactant and a thioether or a combination thereof. The silver halide emulsion used in the present invention can be protected against generation of fog and can be stabilized against reduction in sensitivity during storage. Suitable antifoggants and stabilizers used alone or in combination include thiazolium salts, azaindenes, mercury salts, urazoles, sulfocatechols, oximes, nitrones, benztriazoles, nitroindazoles, mercaptotetrazoles, polysulfates. Examples thereof include valent metal salts, thiuronium salts, valadium, platinum and gold salts. Among these compounds, 6-methyl-4-hydroxy-1,3,3a, 7-tetrazaindene and 2-mercaptobenzimidazole-5 are particularly preferable. -Sodium sulfonate is preferred.

The silver halide emulsion used in the present invention may contain an optical sensitizing dye in order to impart additional photosensitivity. For example, a silver halide emulsion may be treated with an organic solvent for a sensitizing dye, or the dye may be in the form of a dispersion in British Patent 1,154,781.
In addition, additional optical sensitization can be achieved. For optimum results, it is desirable to add the dye to the emulsion at the final step or some step earlier. Sensitizing dyes useful for sensitizing such silver halide emulsions include cyanines, merocyanines, styryls, hemicyanines, (eg, enamine hemicyanine), oxonol and hemioxonols. The cyanine dye preferably contains a basic nucleus such as thiazoline, oxazoline, pyrroline, pyridine, oxazole, thiazole, selenazole and imidazole. Such a nucleus is an alkyl group, a hydroxyalkyl group, a sulfoalkyl group, a carboxyalkyl group,
It may contain an aminoalkyl group or an enamine group, etc., and may be condensed with a carbocyclic ring or a heterocyclic ring, and these rings are a halogen atom, a phenyl group, an alkyl group, a haloalkyl group, a cyano group or It may be substituted with an alkoxy group. These dyes may have an alkyl group, a phenyl group, an enamine group or a heterocyclic substituent in the methylene or polymethylene chain in a symmetrical or asymmetrical system. The merocyanine dye is, in addition to the basic nucleus as described above, for example, thiohydantoin, rhodanine,
It contains acidic nuclei such as oxazolidenedione, thiazolidenedione, barbital acid, thiazolinone, malononitrile. The acid nucleus may be substituted with an alkyl group, a phenyl group, a carboxyalkyl group, a sulfoalkyl group, a hydroxyalkyl group, an alkoxyalkyl group, an alkylamino group or a heterocyclic nucleus. Combinations of the above dyes can be used if desired.

As the sensitizing dye particularly preferably used in the present invention, 3,3'-di- (3-sulfopropyl) -5,5'-diphenyl-9-ethyloxacarbocyanine hydroxide and 3,3'-di- (3-Sulfopropyl) -11-ethyl-4,5,4 ', 5'-dibenzothiacarbocyanine hydroxide, 3,3'-di- (3-sulfopropyl) -5,
5'-dichloro-9-ethylthiacarbocyanine hydroxide, 3,3'-di- (3-sulfopropyl) -5,5 '
-Dimethyl-9-ethylthiacarbocyanine hydroxide, 3,3'-di- (3-sulfopropyl) -9-ethyl-4,5,4 ', 5'-dibenzothiacarbocyanine hydroxide, 3-ethyl -(3-Sulfopropyl) -5,
5'-dichloro-9-ethylthiacarbocyanine hydroxide, 5- (1-ethyl-2-pyridylidene) -3
-Ethyl rhodanine, 3,3'-di- (3-sulfopropyl) selenacyanine hydroxide, 3-phenyl-5
-[(3-Methyl-2-benzoxazolidine) ethylidene] -1-ethyl-2-thiohydantoin, 3,3'-
Diethyl-5,6-dimethyl-5'-phenyl-9-methyloxathiarbocyanine iodide and 3,3'-di- (3-sulfopropyl) -5,5'-diphenyl-9-
Ethyloxacarbocyanine hydroxide and 3,3'-
Di- (3-sulfopropyl) -11-ethyl-4,5,4 ',
Combined use with 5'-dibenzothiacarbocyanine hydroxide, 3,3'-di- (3-sulfopropyl) -5,5'-dichloro-9-ethylthiacarbocyanine hydroxide and 3,3'-di- (3-Sulfopropyl) -9-ethyl-
Combined with 4,5,4 ', 5'-dibenzothiacarbocyanine hydroxide, 3-ethyl-1'-ethyl-3'-(3
-Sulfopropyl) -5'-trifluoromethyl-benzimidazolo-4,5-benzothiacarbocyanine hydroxide and 3,3'-di- (3-sulfopropyl) -5,5 '
Combination use with -dichloro-9-ethylthiacarbocyanine hydroxide is mentioned.

DRR compounds according to the present invention are disclosed, for example, in US Pat.
No.8,312, No.4,135,929, No.4,053,312, No.4,1
No. 98,235, No. 4,013,633, No. 3,954,476, No. 3,
929,760, 4,013,635, 4,195,933, British Patent 1,496,363, Research Disclosure 13024
(1975), 15157 (1976), JP-A-55-33141, 55-
33142, 56-16131, 56-71072, 56-71060,
56-71061, 57-85055, 57-105738, 58-37
Those described in the specification such as 646 and 59-68739 can be used.

As a method of dispersing the DRR compound in the constituent layer,
Various dispersion methods are known, and typical dispersion methods include the methods described below.

A method in which a non-diffusible dye image-forming substance is dissolved in a substantially water-insoluble high boiling point solvent and finely dispersed in a hydrophilic protective colloid. Particularly useful high-boiling point solvents include N-n-butylacetanilide, N, N-diethyllaurylamide, dibutyllaurylamide, dibutylphthalate, tricresyl phosphate, N-dodecylpyrrolidone and the like. In order to assist the above-mentioned dissolution, a low boiling point solvent or an organic solvent which is easily dissolved in water can be used.
As the low boiling point solvent, ethyl acetate, methyl acetate, cyclohexanone, acetone, methanol, ethanol, tetrahydrofuran, etc., and as the organic solvent which is easily dissolved in water, 2-methoxyethanol, dimethylformamide, etc. can be used. These low boiling point solvents and organic solvents that are easily dissolved in water can be removed by washing with water, coating and drying, or the like.

To a solution of a non-diffusible dye image-forming substance in a water-miscible organic solvent, slowly adding a fillable polymer latex and sufficient water to render the non-diffusible dye image-forming substance in the solution insoluble. By incorporating non-diffusible dye image-forming substances into the fillable polymer latex particles.

The water-miscible organic solvent and the fillable polymer latex are described in detail in JP-A-51-59942 and 51-59943.

A method in which a non-diffusible dye image-forming substance is mechanically atomized using a sand grinder or a colloid mill and then dispersed in a hydrophilic colloid.

After dissolving the non-diffusible dye image-forming substance in a water-miscible organic solvent, it is preferably precipitated in water in the presence of a surfactant,
A method in which the precipitate is dispersed in a hydrophilic colloid, for example, as described in JP-A-53-139532.

A method of dissolving a non-diffusible dye image-forming substance together with a polymer in an alkaline aqueous solution, adjusting the pH with an acid to precipitate the non-diffusible dye image-forming substance, and dispersing the non-diffusible dye image-forming substance in a hydrophilic colloid.

Examples of the developer oxide scavenger used in the developer oxide scavenger-containing layer according to the present invention include a non-diffusible coupler, an amidohydrazone compound, and a hydrazone compound which can be fixed by reacting with an oxide of a silver halide developer. ,
Examples thereof include dihydroxybenzene compounds. Of these, the developer oxide scavenger preferably used is a dihydroxybenzene compound, for example, U.S. Patent Nos. 2,360,290, 2,418,613, and 2,
401,721, 3,960,570, U.S. Pat.
No. 2, West German patent application (OLS) 2,149,789, JP-A-50-15643
No. 8, No. 49-106329, U.S. Patent Nos. 2,728,659, No. 2,7.
32,300, 3,243,294, British Patent 752,146,
"Chemical Abstracts", Vol. 56, 6367h, U.S. Patents 3,700,453, 2,732,300, 3,243,294.
No. 50-156438, No. 53-9528, No. 54-29637,
No. 55-43521, Japanese Patent Publication No. 50-21249, U.S. Patent No. 2,701,
The compounds described in No. 197, No. 2,710,801, No. 2,704,713 and the like can be mentioned.

The polymerized dihydroxybenzene compounds described in JP-A-57-17949 can also be used in the present invention.

Furthermore, JP-A-55-73048, JP-A-55-73049, and JP-A-57-2.
The non-diffusible carrier compounds described in 4941, U.S. Pat. No. 4,205,987, Research Disclosure 17842 and 19226 can also be used as the non-diffusible developer oxide scavenger of the present invention.

The dihydroxybenzene compound as a developer oxide scavenger preferably used in the present invention is represented by the following general formula.

General formula In the formula, R represents an alkyl group, an aryl group, an alkoxy group, an acyl group, a carbamoyl group, a carboxyl group, a sulfo group or a halogen atom, and n represents an integer of 1 to 4.

In the dihydroxybenzene compound represented by the above general formula, the group represented by R is preferably a linear or branched alkyl group, and more preferably one or two linear or branched alkyl groups. In some cases. Further, the total number of carbon atoms of the one or two substituents is preferably 8 or more, more preferably 15 to
36.

Specific examples of the non-diffusible developer oxide scavenger represented by the above general formula that can be advantageously used in the present invention are shown below, but the invention is not limited thereto.

Exemplified compound The developer oxide scavenger typified by the above-mentioned dihydroxybenzene compound can be dispersed and contained in the constituent layer of the photosensitive element of the present invention by various methods depending on the kind thereof.

As the hydrophilic colloid, the same ones as those used for the separation layer of the invention described above can be used.

The content of dihydroxybenzene compound is 5 × 10 ^-5 -1
× 10 ^-2 mol / m ² , preferably 5x10 ^{-4 to} 5x10 ^-3 mol /
m ² .

In the light-sensitive element of the present invention, the light-sensitive silver halide emulsion layer, the DRR compound-containing layer in combination with the emulsion layer, the developer oxide scavenger-containing layer and the light-sensitive silver halide emulsion layer, and the closest thereto. Any layer structure can be adopted as long as it has a separation layer of the present invention provided between the developer oxide scavenger-containing layer and, specifically, for example, it is provided from the support side in the following order. it can. That is, a cyan DRR compound-containing layer, a red-sensitive silver halide emulsion layer, a dihydroxybenzene compound-containing intermediate layer,
Providing a magenta DRR compound-containing layer, a green-sensitive silver halide emulsion layer, a dihydroxybenzene-based compound-containing intermediate layer, a yellow DRR compound-containing layer, a blue-sensitive silver halide emulsion layer, and a dihydroxybenzene-based compound-containing protective layer on a support. You can

Each layer containing a hydrophilic colloid as a main component in the light-sensitive element of the present invention can be cured with any appropriate hardener similar to that used in the above-mentioned separation layer.

In coating each of the above layers, it is advantageous to include a coating aid in the coating composition in order to facilitate coating. It is also possible to add a thickener.

Useful coating aids include saponin, alkyl etherified sucrose, monoalkyl etherified glycerin,
Ethoxyethylene adduct of p-nonylphenol, sodium dodecylsulfate, sodium salt of dioctylsulfosuccinate, sodium p-dodecylbenzenesulfonate, betaine compounds described in British Patent 1,159,825 and U.S. Pat. No. 3,441,413. , Japanese Examined Sho 49-46733
And the fluorine compounds described in JP-A-51-32322.

As a thickener, poly-p-sulfostyrene potassium salt,
Examples thereof include cellulose sulfate, polyacrylamide, acrylic acid polymers described in US Pat. No. 3,655,407, and the like.

As a method for applying the above-mentioned coating composition, various methods such as a dipping method, a roller method, an air knife method can be used in addition to the slide hopper method and the curtain method, but they are applied simultaneously with other layers by the slide hopper method. It is preferable.

Other addenda to the layer containing the light sensitive silver halide emulsion, especially those useful in photographic emulsions, such as lubricants, antifoggants,
Stabilizers, sensitizers, plasticizers and the like can be added.

Although various photographic supports can be used in the light-sensitive element of the present invention, it is preferably a flat material which does not cause a significant dimensional change during the processing with the processing composition. Depending on the purpose, a hard support such as glass can be used, but a flexible support is generally useful. And as the flexible support, those used in general photographic light-sensitive materials can be used, and examples thereof include cellulose nitrate film, cellulose acetate film, polyvinyl acetal film, polystyrene film, polyethylene terephthalate film, polycarbonate film, baryta paper and the like. Used to advantage. It is also advantageous in the present invention to use a water vapor permeable support to help the water in the developed alkaline treatment composition to wick through the support after treatment. Whether the support is transparent or opaque is selected depending on various conditions such as the layer structure of the light-sensitive element and the image receiving layer, the direction of exposure, and whether it is processed in a bright place or a dark place. It When a transparent support is used and further processed in the light, the transparent support cannot prevent exposure and observation in order to prevent light leakage from the edge of the transparent support to the silver halide emulsion layer. Is preferably colored to such an extent that light transmission in the surface direction can be prevented.

When an opaque support is used for the purpose of blocking light, a pigment such as carbon black or titanium oxide may be contained in the support, and a binder may be added on the support if necessary. You may use and apply.

The support may optionally contain various photographic additives, such as plasticizers such as phosphates and phthalates, 2- (2'-hydroxy-4-t-butylphenyl) benztriazoles. It may contain an antioxidant such as a UV absorber and a hindered phenol. In order to maintain the adhesion between the support and the layer coated on it,
It is advantageous to provide an undercoat layer or to subject the surface of the support to a pretreatment such as a corona discharge treatment, an ultraviolet irradiation treatment, and a flame treatment. The thickness of the support is not limited, but is usually 2 to 300.
It is desirable to have a thickness of μ.

When the above light-sensitive element is imagewise exposed and then treated with an alkaline processing composition, the diffusible dye is diffusion-transferred to the image-receiving layer placed in a superposed relationship with the above-mentioned light-sensitive element in response to imagewise exposure. Then, the layer is dyed and a color image is formed. The image receiving layer preferably contains a mordant.

As the mordant suitable for the image-receiving layer, any mordant can be used as long as it has a preferable mordant effect on the diffusible dye or its precursor which is diffused and transferred.
Poly-4-vinylpyridine, poly-4-vinyl-N-benzylpyridinium-paratoluenesulfonate, cetyltrimethylammonium bromide, JP-A-54-1398
Compounds and the like described in No. 1 are useful.

The above mordant is used in various dispersants such as ordinary gelatin, polyvinyl alcohol, polyvinylpyrrolidone, and completely or partially hydrolyzed cellulose ester. For example, poly-n-methyl-2-vinylpyridine, mordant, such as n-methoxy-methyl-poly-hexylmethylene adipamide, copolymers or polymer mixtures of vinyl alcohol and vinylpyrrolidone, partially hydrolyzed polyvinyl acetate, acetyl cellulose, gelatin, polyvinyl alcohol, It is also possible to form the image receiving layer with only the dispersant having an effect.

The content ratio of the mordant in the image receiving layer is preferably in the range of 10 to 100% by weight.

Also, as a special example, a mordant can be included in the alkaline processing composition.

The image-receiving layer may further contain various additives commonly used in the photographic art such as an ultraviolet absorber and a fluorescent brightening agent.

If the diffusible dye diffused and transferred to the image-receiving layer is not a dye but a precursor of a diffusible dye such as a leuco dye, in order to convert these into dyes, for example, an oxidizing agent, a color developing agent or a diazonium compound is used. It is advantageous to include.

The image-receiving layer may be in a superposed relationship with the light-sensitive element at the time of processing with the alkaline processing composition, may be dependent on each other before the processing, or may be a combination of both. Further, after the processing, the light-sensitive element and the image-receiving layer may be integrated, or the light-sensitive element and the image-receiving layer may be peeled off.

The image receiving layer may be the same as the above-mentioned support of the photosensitive element.

After the formation of the dye image on the image-receiving layer is substantially completed by the application of the alkaline processing composition, the pH in the light-sensitive element and the image-receiving layer is lowered to around neutral to increase the stability of the dye image and further. It is preferred to virtually stop the image formation of the above to prevent discoloration or contamination of the image that occurs at high pH.
For this reason, it is preferable to use a neutralization layer containing a neutralizing agent that lowers the pH in the system. The material used as the neutralizing agent is preferably a film-forming polymer acid having one or more carboxyl groups, sulfone groups or groups capable of generating a carboxyl group by hydrolysis.

The polymeric acid used in the present invention is preferably about 10,000 to
It has a molecular weight of about 100,000, for example, a monobutyl ester of a 1: 1 copolymer of maleic anhydride and ethylene, and a monobutyl ester of a 1: 1 copolymer of maleic anhydride and methyl vinyl ether. Monoethyl ester, monopropyl ester, monopentyl ester and monohexyl ester of 1: 1 copolymer of maleic acid and ethylene, 1: 1 of maleic anhydride and methyl vinyl ether.
Monoethyl ester, monopropyl ester, monopentyl ester as well as copolymers of monohexyl ester, polyacrylic acid, polymethacrylic acid in various ratios, and various vinyl monomers such as acrylic acid and methacrylic acid. Copolymers having a ratio of, for example, acrylic acid esters, methacrylic acid ester acids, vinyl ethers, etc., containing at least 30 mol%, preferably 50 to 90 mol% acrylic acid or methacrylic acid. Can be used. In addition to these, metal salts described in Research Disclosure 12331, monomeric acids, ballasted organic acids, alkyl phosphonates, polyacryl phosphonates, poly (1-acryloyl-2,2,2-trimethyl) (Hydrazinium, p-toluene sulfonate) and the like can be used alone or in combination with a binder polymer as the case requires. If necessary, a polymer acid and a monomer acid, or a polymer acid and an organic amine may be used in combination.
These polymeric acids, monomeric acids, organic amines and binder polymers include alcohols such as methanol, ethanol, propanol, butanol,
For example, it can be dissolved in a ketone such as acetone, methyl ethyl ketone, diethyl ketone, cyclohexanone, etc., an ester such as methyl acetate, ethyl acetate, isopropyl acetate, butyl acetate, etc., or a mixture thereof, and applied. It can also be microencapsulated.

The thickness of the neutralization layer varies depending on the composition of the alkaline treatment composition used, the material contained in the neutralization layer used, and the like, so it cannot be unconditionally determined, but it is generally 5 to 30 μm. Range is suitable.

A timing layer (neutralization rate control layer) for controlling the decrease in pH can be provided together with the neutralization layer.
This timing layer serves to delay the pH drop until after the desired image and transfer has taken place. That is, the neutralization layer prevents an undesired decrease in the density of the transfer dye image due to a rapid decrease in pH in the system before the development of silver halide and the formation of the diffusion transfer dye image.

As this timing layer, various ones can be used, for example, gelatin, polyvinyl alcohol, partially acetalized polyvinyl alcohol, partially hydrolyzed polyvinyl acetate, cyanoethylated polyvinyl alcohol,
Combinations of hydroxypropylmethylcellulose, isopropylcellulose, polyvinylamides, polyvinylamide graft copolymers, latex liquids and penetrants are useful.

The neutralizing layer and the timing layer may be coated on the support of the photosensitive element described above, or may be coated on a support different from the support of the photosensitive element together with the image receiving layer, and further, Alternatively, it may be applied on a treatment sheet described later.

Where the image-receiving layer described above is integrally combined with the light-sensitive element prior to processing, it is preferred to use processing sheets to evenly distribute the alkaline processing composition and provide good diffusion.

As the processing sheet, those similar to the above-mentioned support of the photosensitive element can be arbitrarily used according to the purpose, and may be transparent or opaque depending on the purpose. The treatment sheet may be coated with a layer containing a mordant as a scavenger, or may be provided with a neutralizing layer and a timing layer.

A peeling agent is preferably used when the image-receiving layer is integrated with the light-sensitive element before the treatment, and when the image is obtained by peeling the light-sensitive element and the image-receiving layer after the treatment. The releasing agent can be contained on the surface of the silver halide emulsion layer, on the image receiving layer containing a mordant, or in the processing agent. Suitable release agents are those having a different composition than the binder used in the light-sensitive element and the image-receiving layer. For example, alkali permeable polysaccharides, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, 4,4'-dihydroxyphenol glucose, sucrose, sorbitol, inositol, resorcinol, sodium phytate, zinc oxide, fine particle polyethylene, fine particle poly-4. -Fluorine ethylene, polyvinyl pyrrolidone / polyvinyl hydrogen phthalate, ethylene-maleic anhydride copolymer, etc. are useful.

The alkaline processing composition used in the present invention is a liquid composition containing processing components necessary for developing a silver halide emulsion and forming a diffusion transfer image, and the solvent of the alkaline processing liquid is mainly water. It is also possible to additionally use a hydrophilic solvent such as methanol, methyl cellosolve or the like.
The alkaline processing composition contains the amount of alkaline agent required for development of the emulsion layer and dye image formation. As the alkaline agent, sodium hydroxide, potassium hydroxide, calcium hydroxide, tetramethylammonium hydroxide, sodium carbonate, sodium phosphate, diethylamine or the like can be used, and the alkaline treatment composition has a pH value of about pH at room temperature.
It is desirable to have 12 or more. Thickening agents may be included in the alkaline processing composition, for example polymeric thickening agents which are inert to alkaline solutions such as hydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose, sodium carboxymethyl cellulose, hydroxybrovyl cellulose. The concentration of the thickener is preferably about 1 to 10% by weight of the alkaline treatment composition,
This gives the alkaline treatment composition a viscosity of about 100-300,0.
It will be 00 centipoise and the distribution of the alkaline processing composition during processing can be made uniform. It also has the effect of forming a non-fluidic film during processing and preventing unwanted image changes after substantial dye image formation. Also, the alkaline processing composition preferably contains a silver halide developer.

Typical silver halide developers that can be used in the present invention include 3-pyrazolidone compounds such as 1-phenyl-3-pyrazolidone and 1-phenyl-4,4.
-Dimethyl-3-pyrazolidone, 1-m-tolyl-3-
Pyrazolidone, 1-phenyl-4-methyl-3-pyrazolidone, 1-phenyl-4-hydroxymethyl-4-methyl-3-pyrazolidone, 1-phenyl-5-methyl-
3-pyrazolidone, 1-p-tolyl-3-pyrazolidone, 1,4-dimethyl-3-pyrazolidone, 1-phenyl-4,4-bis- (hydroxymethyl) -3-pyrazolidone, 4-methyl-3-pyrazolidone , 1- (3-chlorophenyl) -4-methyl-3-pyrazolidone, 1- (4
-Chlorophenyl) -4-methyl-3-pyrazolidone,
1- (3-chlorophenyl) -3-pyrazolidone, 1-
(4-Chlorophenyl) -3-pyrazolidone, 1-p-
Tolyl-4-methyl-3-pyrazolidone, 1-o-tolyl-4-methyl-3-pyrazolidone, 1-m-tolyl-
4,4-Dimethyl-3-pyrazolidone, 5-methyl-3-
Pyrazolidone, 1- (2-trifluoroethyl) -4,4
-Dimethyl-3-pyrazolidone and other hydroquinone compounds such as hydroquinone, 2,5-dichlorohydroquinone and 2-chlorohydroquinone, catechol compounds such as catechol and 3-methoxycatechol, 4
-Aminophenol compounds such as cyclohexylcatechol, such as 4-aminophenol, 3-methyl-4-
Aminophenol, N-methylaminophenol, 3,5
-Dibromoaminophenol and other phenylenediamine compounds such as N, N-diethyl-p-phenylenediamine, N, N-diethyl-3-methyl-p-phenylenediamine, 3-methoxy-N-ethyl-N -Ethoxy-p-phenylenediamine, N, N, N ', N'-tetramethyl-p-phenylenediamine and the like.

Of these, a black-and-white silver halide developer, particularly a 3-pyrazolidone-based developer, is generally preferred in order to reduce the occurrence of contamination in the dye image area to be formed.

Further, for example, as described in JP-A-51-111334, two or more kinds of silver halide developers can be used in combination.

The silver halide developer is generally contained in the alkaline processing composition, but it may be contained in advance in at least one layer in the light-sensitive element. Further, it can be contained both in the alkaline processing composition and in the light-sensitive element. When it is contained in the light-sensitive element in advance, it may be contained in the form of a precursor.

The layers in the photosensitive element include, in addition to the separation layer of the present invention, for example, a silver halide emulsion layer, a dye image-forming substance-containing layer, an intermediate layer,
For example, a protective layer. Further, in the alkaline treatment composition, a benzotriazole-based compound such as 5-methylbenzotriazole, a benzimidazole-based compound such as 5-methylbenzotriazole
Nitrobenzimidazole, tetrazaindene compounds, such as 4-hydroxy-5,6-cyclopentene-1,
It is also possible to add 3,3a, 7-tetrazaindene, sulfite, potassium bromide and the like. Further, a fog agent, a silver halide solvent and the like can be added depending on the silver halide developer used.

The alkaline treatment composition used in the present invention is preferably contained in a destructible container. For example, a sheet of liquid and air impermeable material is folded, and the treatment agent is stored in a hollow container created by sealing each edge, and when the film unit passes through the pressure tool, the treatment agent becomes It is desirable that the alkaline processing liquid is released by breaking at a location determined by the applied internal pressure.

As the material forming the container, materials such as polyethylene terephthalate / polyvinyl alcohol / polyethylene laminate, lead foil / vinyl chloride-vinyl acetate copolymer laminate, etc. are advantageously used. Further, it is desirable that these containers are fixed along the front edge of the photosensitive element so that the stored liquid can be spread on the surface of the photosensitive element in substantially one direction.

As a background of the formed image, it is preferable to provide a light-reflecting agent layer having high whiteness on the side opposite to the viewing direction with respect to the image receiving layer. The position of the light reflector layer is not particularly limited, but after the treatment,
When the photosensitive element and the image receiving layer are not peeled off, it is preferable to provide a light reflecting agent layer between the photosensitive element and the image receiving layer. The light-reflecting agent layer may be provided as a layer in advance, or the light-reflecting agent layer may be contained in the alkaline treatment liquid to form the light-reflecting agent layer during the treatment. As the light reflecting agent, titanium dioxide, zinc oxide, barium sulfate, flake silver, alumina, barium stearate, zirconium oxide and the like can be used alone or in combination of two or more. When it is provided as a layer in advance, it may be dispersed in any hydrophilic colloid permeable to an alkaline solution, such as gelatin or polyvinyl alcohol.

Stilbene, coumarin or the like may be added as a whitening agent to the light reflector layer. When the silver halide emulsion is developed in the light after exposure, an opacifying layer is preferably provided in order to protect the silver halide emulsion from light. The opacifying agent layer may be provided as a layer in advance or may be formed at the time of treatment. Carbon black or an indicator dye may be added as an opacifying agent. It is also advantageous to use desensitizers.

The light-reflecting agent layer and the opacifying agent layer may be present as the same layer or may be present as separate layers adjacent to each other.

Various kinds of film units can be used as the film unit composed of the photosensitive element according to the present invention.
3,415,644, 3,415,645, 3,415,646, 3,47
3,925, 3,573,042, 3,573,043, 3,594,164
No., 3,594,165, 3,615,421, 3,576,626,
No. 3,658,524, No. 3,635,707, No. 3,672,890, No. 3,7
30,718, 3,701,656, 3,689,262, JP-A-50-6
Any of the film units described in each specification of 337, Belgian Patent No. 757,959, or No. 757,960 can be used in the present invention.

In each of the various film units described above, a filter dye or the like suitable for improving photographic characteristics may be added to any position on the light incident side of the silver halide emulsion at the time of exposure. As the filter dye, it is possible to use a dye that is stable at a normal pH but becomes colorless due to decomposition or the like when contacted with an alkaline treatment liquid.

In addition, after the dye image is diffuse-transferred to the image-receiving layer, the silver image and the image of the dye or its precursor remain on the photosensitive element in correspondence with the diffusion-transferred image. The residual silver and silver halide are removed by treatment with a bleaching bath and a fixing bath or a bleach-fixing bath, and if necessary, a treatment for converting a dye precursor into a dye is carried out to form on the image-receiving layer. It is also possible to obtain an inverted dye image with respect to the dye image.

As described above, in the light-sensitive element of the present invention, various layer constitutions, alkali treatment compositions and image-receiving layers can be arbitrarily adopted within the scope of the present invention, but the effects of the present invention are particularly exerted in the following cases. Be effective. That is, when a light-sensitive element having the layer structure of the present invention is processed with an alkali processing composition, it is opposed to the direction in which the alkali processing composition diffuses and penetrates, and the diffusibility oxidized by the oxide of the silver halide developing agent. This is the case where the dye diffuses and moves and is transferred to the image receiving layer.

(Specific Examples of the Invention) Hereinafter, the present invention will be illustrated with reference to Examples, but the present invention is not limited to the following description.

Example 1 A photosensitive element (I) of the present invention was prepared by sequentially coating the following layers on a transparent polyethylene terephthalate film support having a thickness of 150 μm.

(1) Cyan DRR compound (0.5g / m ² ) with the following structure, N, N-
Cyan dye image-forming substance layer containing diethyl laurylamide (0.5 g / m ² ) and gelatin (2.0 g / m ² ). (2) Red-sensitive internal latent image type direct positive emulsion (converted to silver of 0.
8g / m ² ), 2-sec-octadecylhydroquinone-5-
Red containing potassium sulfonate (0.08 g / m ² ), 1- [4- (2-formylhydrazino) phenyl] -3-phenylthiourea (25 mg per silver mole) and gelatin (1.2 g / m ² ). Sensitive emulsion layer.

(3) A separation layer containing the gelatin (0.5 g / m ² ) of the present invention.

(4) 2-acetyl-5, which is the exemplified compound (6)
sec-Octadecyl hydroquinone (0.6g / m ² ), tricresyl phosphate (0.3g / m ² ) and gelatin (1.25g
/ m ² ) containing intermediate layer.

(5) Magenta DRR compound (0.6g / m ² ) with the following structure, N, N
A magenta dye image-forming material layer containing diethyllaurylamide (0.6 g / m ² ) and gelatin (2.0 g / m ² ).

(6) Green-sensitive internal latent image type direct positive emulsion (1.
0g / m ² ), 2-sec-octadecylhydroquinone-5-
Green containing potassium sulfonate (0.1 g / m ² ), 1- [4- (2-formylhydrazino) phenyl] -3-phenylthiourea (25 mg per 1 mol of silver) and gelatin (1.2 g / m ² ). Sensitive emulsion layer.

(7) A separation layer containing the gelatin of the present invention (0.5 g / m ² ).

(8) 2-Acetyl-5- which is the exemplified compound (6).
sec-Octadecyl hydroquinone (0.6g / m ² ), tricresyl phosphate (0.3g / m ² ) and gelatin (1.25g
/ m ² ) containing intermediate layer.

(9) Yellow DRR compound (1.0 g / m ² ), N, N having the following structure
A yellow dye image-forming material layer containing diethyl laurylamide (1.0 g / m ² ) and gelatin (2.0 g / m ² ).

(10) Blue-sensitive internal latent image type direct positive emulsion (1.
0g / m ² ), 2-sec-octadecylhydroquinone-5-
Potassium sulfonate ((0.1 g / m ² ), 1- [4- (2-
Formylhydrazino) phenyl] -3-phenylthiourea (25 mg per mole of silver) and gelatin (1.2 g / m ² ) blue-sensitive emulsion layer.

(11) A separation layer containing the gelatin (0.5 g / m ² ) of the present invention.

(12) Gelatin (0.8 g / m ² ), 2-acetyl-5-sec-octadecylhydroquinone (0.4 g / m ² ) tricresyl phosphate (0.2 g / m ² ) which is the exemplified compound (6)
And a protective layer containing tetrakis (vinylsulfonylmethyl) methane (0.1 g / m ² ).

Cyan DRR compound Magenta DRR compound Yellow DRR compound As a comparative sample to the photosensitive element (I) of the present invention, a comparative photosensitive element identical to the photosensitive element (I) except that the separation layers (3), (7) and (12) were removed from the photosensitive element (I). Created (II).

Separately, the following layers were sequentially coated on an opaque paper support to prepare a dye image receiving sheet.

(1) Styrene and N, N-dimethyl-N-benzyl-N-
Terpolymer of p- (methacryloylaminophenyl) methylammonium chloride and divinylbenzene (molar ratio 48/48/4) (2.7g / m ² ), gelatin (2.7g / m ² ) and 4-hydroxy Methyl-4-methyl-1-phenyl-
An image receiving layer containing 3-pyrazolidinone (0.33 g / m ² ).

(2) Gelatin (1.2g / m ² ), 2 as UV absorber
-(2-hydroxy-3-tert-butyl-5-n-butylphenyl) benzotriazole, 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -6-chloro-benzotriazole, 2- ( 2-hydroxy-3,
5-dibutylphenyl) benzotriazole and 2-
An intermediate layer containing a mixture (0.8 g / m ² ) of (2-hydroxy-5-n-butylphenyl) benzotriazole.

(3) Gelatin (0.9 g / m ² ) and glyoxal (0.0
Protective layer containing 6 g / m ² ).

The above light-sensitive elements (I) and (II) were given a specified exposure through a light wedge having a density difference of 0.15 in one step, and then dipped in an activator solution having the following composition for 20 seconds, and then a pair of exposure elements were applied. The image receiving sheet was superposed on the above image receiving sheet through a pressure roller. The treatment was carried out at 24 ° C.

[Composition of activator solution] Potassium hydroxide 56.1 g 5-Methylbenzotriazole 7.2 g 11-Aminoundecanoic acid 2.0 g Potassium bromide 2.0 g Make up to 1,000 ml with water. After 3 minutes, the photosensitive element and the image receiving sheet were peeled off.

The reflection density of the transfer dye image obtained on the image receiving sheet was measured, and the results shown in Table 1 were obtained.

* Γ ₁ is the tangent value of the inclination angle of the straight line connecting the two points of density 0.3 and 0.8 on the characteristic curve, and γ ₂ is the line connecting the two points of 0.5 and 1.5 on the characteristic curve.

From the results in Table 1, it can be seen that the light-sensitive element (I) having the separation layer of the present invention has a higher maximum density and a lower minimum density than the comparative photographic element (II). Conventionally, the white background, which has been considered as one of the drawbacks of instant photography by the color diffusion transfer method, is improved, and by the photosensitive element of the present invention,
A good image with a wide expression range of dye density was obtained.

Furthermore, as for the gradation, as is clear from the value of γ ₂ , the gradation from the so-called straight line portion to the shoulder is rich, and at the same time, as is clear from the value of γ ₁ , there is a break in the legs. It can be seen that an image with good (high contrast), rich gradation expression, and good clarity can be obtained.

Example 2 1- [4- (2-formylhydrazino) phenyl] -3-phenylthiourea (fogging agent) was used in place of the surface latent image type negative emulsion for the internal latent image type direct positive emulsion of the photosensitive element of Example 1.
To prepare photographic elements III and IV in which
Exposure was performed in the same manner as in Example 1, and development processing was performed using the same processing sheet and processing composition as in Example 1, and the density was measured, and the results in Table 2 were obtained.

From Table 2, a photographic element using a surface latent image type negative emulsion (II
Also in I) and (IV), the photosensitive element (III) having the separation layer of the present invention has a maximum density which is lower than that of the photographic element (IV) having a conventional layer structure. I find it expensive. That is, it is apparent that the separation layer of the present invention has an excellent effect even when the surface latent image type negative emulsion is used.

Claims (1)

[Claims] 1. A light-sensitive silver halide emulsion layer of at least 1.
And at least one layer containing a non-diffusible dye image-forming substance which is capable of releasing a diffusible dye or a precursor thereof, which is oxidized by an oxide of a silver halide developer under alkaline processing conditions, in combination with the emulsion layer. , And a developing element closest to the photosensitive silver halide emulsion layer in a light-sensitive element for a color diffusion transfer method, which comprises at least one layer containing a dihydroxybenzene compound represented by the following general formula as a developer oxide scavenger: A photosensitive element for a color diffusion transfer method, comprising a layer containing a non-photosensitive gelatin-containing hydrophilic colloid as a main component between the agent oxide scavenger-containing layer. General formula [Wherein R is an alkyl group, an aryl group, an alkoxy group,
It represents an acyl group, a carbamoyl group, a carboxyl group, a sulfo group or a halogen atom, and n represents an integer of 1 to 4. ]