JPH02240652A - Color diffusion transfer photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain an image having especially low min. density (Dmin) and a fine white ground by incorporating a polymer contg. lactam rings in the repeating units into a layer positioned between a layer contg. a dyestuff releasing compd. and an image receiving layer. CONSTITUTION:A polymer contg. lactam rings is incorporated into a layer positioned between a layer contg. a dyestuff releasing compd. and an image receiving layer, preferably into a layer positioned between a layer contg. a dyestuff releasing compd. and closest to the image receiving layer and the image receiving layer. The polymer contg. lactam rings may be a polymer of any monomer contg. a lactam ring and a monomer represented by formula I or II may be used. An image having low Dmin, a fine white ground and high image quality can be formed, quickly.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a color diffusion transfer photographic material,
In particular, the present invention relates to a color diffusion transfer photographic material with a beautiful white background and a low minimum density (Dmin).

[Prior art]

It is well known in the art to obtain color images by using dye-releasing compounds that release diffusible dyes as a result of or as a function of silver halide development under alkaline conditions, and by mordanting and fixing the diffused dyes in an image-receiving layer. It is being

In such a color diffusion transfer method, the minimum density (Dm
in) is high, that is, the white background is often not white enough, D
The main reason for the high min value is due to fog in the silver halide emulsion itself, which is transferred to the dye and becomes mordant.As a countermeasure to this problem, various studies have been conducted to use antifoggants to suppress fog in the silver halide emulsion. I've been

However, the method of suppressing fog using an antifoggant has the disadvantage of slowing down the development speed. In the diffusion transfer method called "instant photography," a delay in development is a fatal drawback because it delays the completion of the image.

[Problem to be solved by the invention]

Conventionally, there has been a strong desire to develop a color diffusion transfer photographic material that has a low Dmin without slowing down the image completion speed. Since antifoggants delay development to a greater or lesser extent, it has been desired to develop completely new means or techniques.

[Purpose of the invention]

An object of the present invention is to develop a color diffusion transfer photographic light-sensitive material that has a low Dmin and can quickly produce beautiful, high-quality images with a white background.

[Means to solve the problem]

As a result of extensive studies, the inventors have found that the object of the present invention can be effectively achieved by the following.

That is, the present invention provides a film unit having a layer containing a dye-releasing compound capable of releasing a diffusible dye in combination with a silver halide emulsion, an image-receiving layer capable of mordanting the dye, and a neutralizing layer capable of neutralizing the lactam. A polymer containing a ring as a repeating unit is placed between the dye-releasing compound-containing layer and the image-receiving layer.
This is a color diffusion transfer photographic light-sensitive material characterized in that a color diffusion transfer photographic material is present in a layer containing a color diffusion transfer material.

In the present invention, the polymer containing a pyrrolidone bone core in a repeating unit may be any polymer having a pyrrolidone bone core, for example, the following general formula (1) or (II
).

→C1l□CFl---HAh---HBh---(J
) In the formula, R1 represents a hydrogen atom or an alkyl group having 4 or less carbon atoms, and Rt and R5 may be the same or different, and represent a hydrogen atom, an alkyl group having 6 or less carbon atoms, or a substituted alkyl group, Represents an aryl group or substituted aryl group having 6 or less carbon atoms.

Z represents an atomic group containing -N-C- necessary to form a 5- to 6-membered ring, ie, a lactam ring, and may contain a hetero atom in addition to N-C-.

A represents a copolymerizable monomer, and examples thereof include the following.

Acrylic esters, specifically methyl acrylate, ethyl acrylate, n-propyl acrylate,
Isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, 5ec-butyl acrylate,
tert-butyl acrylate, amyl acrylate,
Hexyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, (ert-octyl acrylate, 2-chloroethyl acrylate, 2-bromoethyl acrylate, 4-chlorobutyl acrylate.

Acrylate, cyanoethyl acrylate, 2-acetoxyethyl acrylate, dimethylamine ethyl acrylate, benzyl acrylate, methoxybenzyl acrylate, 2-chlorocyclohexyl acrylate, cyclohexyl acrylate, furfuryl acrylate,
Tetrahydrofurfuryl acrylate, phenyl acrylate, 5-hydroxypentyl acrylate, 2.2
-dimethyl-3-hydroxypropyl acrylate, 2
-Methoxyethyl acrylate, 3-methoxybutyl acrylate, 2-ethoxyethyl acrylate, 2-4
so-propoxy acrylate, 2-butoxyethyl acrylate, 2-(2-methoxyethoxy)ethyl acrylate, 2-(2-butoxyethoxy)ethyl acrylate, ω-methoxypolyethylene glycol acrylate (additional mole number n = 9), 1-propoxy Examples include 2-methoxyethyl acrylate, 1,1-dichloro-2ethoxyethyl acrylate, and the like. In addition, the following monomers can be used.

Methacrylic acid esters 2 Specific examples thereof include methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, 5e
c-butyl methacrylate, tert-butyl methacrylate, amyl methacrylate, hexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, chlorobenzyl methacrylate, octyl methacrylate, stearyl methacrylate, sulfopropyl methacrylate, N-ethyl-N-phenylaminoethyl methacrylate, 2 -(3Phenylpropyloxy)ethyl methacrylate, dimethylaminophenoxyethyl methacrylate, furfuryl methacrylate, tetrahydrofurfuryl methacrylate, phenyl methacrylate, cresyl methacrylate, naphthyl methacrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl methacrylate, triethylene Glycol monomethacrylate, dipropylene glycol monomethacrylate, 2-methoxyethyl methacrylate, 3-
Methoxybutyl methacrylate, 2-acetoxyethyl methacrylate, 2-acetoacetoxyethyl methacrylate, 2-ethoxyethyl methacrylate, 2-is
.

-Propoxyethyl methacrylate, 2-butoxyethyl methacrylate, 2-(2-methoxyethoxy)ethyl methacrylate, 2-(2-ethoxyethoxy)ethyl methacrylate, 2-(2-butoxyethoxy)ethyl methacrylate, ω-methoxypolyethylene glycol methacrylate ( (number of moles added = 6), allyl methacrylate, dimethylaminoethyl methacrylate methyl chloride salt, and the like.

Vinyl esters: Specific examples include vinyl acetate, vinyl propionate, vinyl butyrate, vinyl isobutyrate, vinyl caproate, vinyl chloroacetate, vinyl methoxy acetate, vinyl phenyl acetate, vinyl benzoate, vinyl salicylate. Acrylamic acid: for example, acrylamide, methylacrylamide, ethyl acrylamide, propylacrylamide, butylacrylamide, tert-butylacrylamide, cyclohexylacrylamide, benzylacrylamide, hydroxymethylacrylamide,
Methoxyethyl acrylamide, dimethylaminoethyl acrylamide, phenylacrylamide, dimethylacrylamide, diethylacrylamide, β-cyanoethyl acrylamide, N-(2-acetoacetoxyethyl)acrylamide, diacetone acrylamide, etc.: Methacrylamides: e.g., methacrylamide, methylmethacrylamide amide, ethyl methacrylamide, propyl methacrylamide, butyl methacrylamide, ter
t-butylmethacrylamide, cyclohexylmethacrylamide, benzylmethacrylamide, hydroxymethylmethacrylamide, methoxyethylmethacrylamide, dimethylaminoethylmethacrylamide, phenylmethacrylamide, dimethylmethacrylamide, diethylmethacrylamide, β-cyanoethylmethacrylamide, N-(2-acetoacetoxyethyl) methacrylamide, etc.; Olefins: For example, dicyclopentadiene, ethylene, propylene, ■-butene, 1-pentyne, vinyl chloride, vinylidene chloride, isoprene, chlorobrene, butadiene, 2.3 -dimethylbutadiene, etc.; Styrenes; for example, styrene, methylstyrene, dimethylstyrene, trimethylstyrene, ethylstyrene,
Isopropylstyrene, chloromethylstyrene, methoxystyrene, acetoxystyrene, chlorstyrene, dichlorostyrene, bromustyrene, vinylbenzoic acid methyl ester, etc. Vinyl ether collections such as methyl vinyl ether, butyl vinyl ether, hexyl vinyl ether, methoxyethyl vinyl ether, dimethylaminoethyl Vinyl ether, etc.; Others include butyl crotonate, hexyl crotonate, dimethyl itaconate, dibutyl itaconate, diethyl maleate, dimethyl maleate, dibutyl maleate, diethyl fumarate, dimethyl fumarate, dibutyl fumarate, methyl vinyl ketone, Phenyl vinyl ketone, methoxyethyl vinyl ketone, glycidyl acrylate,
Examples include glycidyl methacrylate, N-vinyloxazolidone, N-vinylpyrrolidone, acrylonitrile, methacrylonitrile, vinylidene chloride, methylenemalonitrile, and vinylidene.

Further, B is an ionic copolymerizable comonomer, and as a comonomer, a hexamer containing an acid group such as those listed below may also be used.

Acrylic acid; Methacrylic acid; Itaconic acid; Maleic acid;
Citraconic acid; Styrene sulfonic acid: Vinylbenzyl sulfonic acid; Vinyl sulfonic acid niacryloxyalkyl sulfonic acid, such as acryloyloxymethyl sulfonic acid, acryloyloxyethyl sulfonic acid, acryloyloxypropylsulfonic acid, etc.; Methacryloyloxyalkyl sulfonic acid, methacryloyl Oxyethylsulfonic acid, methacryloyloxypropylsulfonic acid, etc.; acrylamide alkylsulfonic acid, such as 2-acrylamido-2-methylethanesulfonic acid,
2-acrylamido-2-methylpropanesulfonic acid,
2-acrylamido-2-methylbutanesulfonic acid, etc.; methacrylamide alkylsulfonic acid, e.g. 2-
methacrylamide-2-methylethanesulfonic acid, 2-
methacrylamide-2-methylpropanesulfonic acid, 2
-Methacrylamide-2-methylbutanesulfonic acid, etc. Also includes sulfinic acids such as styrenesulfinic acid and those in which the above sulfonic acids are replaced with sulfinic acids.

These acids may be salts of alkali gold (eg, Na, etc.) or ammonium ions.

x, y, and z represent molar ratios and are expressed as numbers that add up to 100. X is 10 to 100 mol%, preferably 20 to 100 mol%. y is 0 to 90 mol%, preferably 0 to 80 mol%, and 2 is 0 to 80 mol%, preferably 0 to 60 mol%.

-a In the polymer containing a lactam ring represented by formula (1) or ([1), any monomer containing a lactam ring may be used, but specific examples include, but are not limited to, the following: isn't it.

→CIhCII-111 ([-2) CHg=CII C11z=CH
Further, the average molecular weight of the polymer of general formula (1) or (■) is preferably 500 or more, particularly preferably 1000 or more.

Next, specific examples of the polymer of the present invention will be given, but the scope of the present invention is not limited thereto.

(! →CHt CII hT-111-HC) 1 CHhl
-11111 The polymer of the present invention is characterized in that it is contained in a layer located between the dye-releasing compound-containing layer and the image-receiving layer, particularly the dye-releasing compound-containing layer and the image-receiving layer closest to the image-receiving layer. It is preferable to contain it in a layer located between.

For example, Research Disclosure N1115162
(1976), a support, (1) an image-receiving layer, (2) a white reflective layer, (3) a light-shielding layer, (4) a cyan dye-releasing compound-containing layer,
(5) Red-sensitive emulsion layer, (6) Interlayer, (7) Magenta dye-releasing compound-containing layer, (8) Green-sensitive emulsion layer, (9) Intermediate layer, 0ω I, Rho dye-releasing compound-containing layer, 00 Blue The basic structure consists of a sensitive emulsion layer, a protective layer, and a cyan dye. A new layer may be provided between the release compound containing layers and contain the polymer within that layer.

Even in formats with completely different layer configurations, the above relationship remains the same, and any layer between the image-receiving layer and the dye-releasing compound-containing layer closest thereto is suitable.

The polymer of the present invention is preferably 0.01-1 g/rd
, especially in the range of 0.02 to 0.5 g/if.

In a preferred embodiment of the color diffusion transfer photographic light-sensitive material of the present invention, a combination of a blue-sensitive emulsion layer, a green-sensitive emulsion layer and a red-sensitive emulsion layer, or a green-sensitive emulsion layer, a red-sensitive emulsion layer and an infrared-sensitive emulsion layer is used. A combination of layers, or a combination of a blue-sensitive emulsion layer, a red-sensitive emulsion layer, and an infrared-sensitive emulsion layer, and a yellow dye-releasing compound, a magenta compound, and a cyan compound in each of the above emulsion layers, respectively. (Here, "infrared light-sensitive emulsion layer" is 700nm or more, especially 740nm
(refers to an emulsion layer that is sensitive to light with a wavelength of m or more).

In the present invention, the term "silver halide emulsion layer combined with a dye-providing compound" refers to a layer in which the dye-providing compound and the silver halide emulsion are added in the same layer or in adjacent separate layers.

A typical form of a film unit used for color diffusion transfer has an image receiving element and a photosensitive element laminated on a single transparent support, and after the transferred image is completed, the photosensitive element is peeled off from the image receiving element. There are forms that are unnecessary. The image-receiving element consists of at least one mordant layer, and between the mordant layer and the photosensitive layer or dye-providing compound-containing layer there is a white reflective layer containing a solid pigment such as titanium oxide so that the transferred image can be viewed through the transparent support. provided.

A light-shielding layer may be further provided between the white reflective layer and the photosensitive layer so that the development process can be completed in a bright place, and if desired, all or part of the photosensitive element can be peeled off from the image receiving element. A release layer may be provided at an appropriate position for the purpose of
It is described in Canadian Patent No. 674.082. In another embodiment that does not require peeling, the photosensitive element described above is coated on one transparent support, a white reflective layer is coated thereon, and an image-receiving layer is further laminated thereon.

Regarding an embodiment in which an image receiving element, a white reflective layer, a peelable layer, and a photosensitive element are laminated on the same support, and the photosensitive element is intentionally peeled off from the image receiving element, US Pat. No. 3,730,71
It is stated in No. 8.

In addition, as described in JP-A-63-226649, an image-receiving layer, a peeling layer, and a photosensitive layer combined with a dye-providing compound are sequentially provided on a white reflective support, and a transparent cover sheet having a neutralizing function is used. The present invention is also preferably used for a film unit in which an alkaline processing agent is spread between the photosensitive layer and the photosensitive layer, and the white reflective support and the image-receiving layer are peeled off from the photosensitive layer at the release layer after processing.

On the other hand, there are two typical forms in which a photosensitive element and an image receiving element are separately coated on two supports.
One is a peelable type, and the other is a peelable type. To explain these in detail, a preferred embodiment of the peelable film unit has a light-reflecting layer on the back surface of the support, and at least one image-receiving layer coated on the surface thereof. In addition, the photosensitive element is coated on a support having a light-shielding layer, and the surface coated with the photosensitive layer and the mordant layer do not face each other before the end of exposure, but after the end of exposure (for example, during development) the surface coated with the photosensitive layer does not face each other. It is designed so that it is turned upside down and overlaps the image-receiving coated surface. Immediately after the transfer image is completed with the mordant layer, the photosensitive element is peeled off from the image receiving element.

Further, in a preferred form a of the peel-free film unit, at least one mordant layer is coated on a transparent support, and a photosensitive element is coated on a support having a transparent or light-shielding layer. , the surface coated with the photosensitive layer and the surface coated with the mordant layer are stacked facing each other.

The above-described color diffusion transfer system is usually further combined with a pressure-rupturable container (processing element) containing an alkaline processing liquid. Among them, an image receiving element and a photosensitive element were laminated on one support! In a single release film unit, this processing element is preferably located between the photosensitive element and an overlying cover sheet. Furthermore, in a configuration in which a photosensitive element and an image-receiving element are separately coated on two supports, the processing element is disposed between the photosensitive element and the image-receiving element at the latest during development processing. Depending on the form of the film unit, the processing element is preferably coated with a light-blocking agent (
Preferably, the film unit contains a neutralizing layer and a neutralizing timing layer. Preferably, a neutralization timing mechanism comprising: is incorporated in the cover sheet, or in the image receiving element, or in the photosensitive element.

The above film unit is Special Publication No. 4B-33697,
JP-A-48-43317, JP-A No. 50-153628,
As described in No. 52-11027 and No. 5648629, it is generally processed into a monosheet using a mask material, a rail material, a surplus liquid trap material, etc.

In particular, in order to facilitate peeling after treatment, Re5ea
rch Disclosure No. Nn23026 (1
It is effective to make a slit as described in 983). The shape, depth, etc. of the slit are selected depending on the physical properties of the white support used.

The size of the film unit is arbitrary, but in addition to the size of instant films currently available on the market, more compact film sizes and larger film sizes can be used.

In order to take a photograph using the above film unit, it is necessary to form a mirror image of the subject on the film. For this purpose it is necessary to use mirrors.

Regarding this type of camera, U.S. Patent Nos. 3 and 4
It is known from No. 47,437.

In the present invention, a photosensitive layer consisting of a silver halide emulsion layer in combination with a dye-providing compound is provided.

Its components will be described below.

(1) Dye-providing compound The dye-providing compound used in the present invention is either a non-diffusible compound that releases a diffusible dye (which may also be a dye precursor) in conjunction with silver development, or a compound whose diffusivity itself changes. The theory of photographic process ``The T
theory of thePhotographic
Process” 4th edition.

All of these compounds can be represented by the following general formula (1).

DYE-Y (1) Here, DYE represents a dye or its precursor, and Y represents a component that provides a compound with diffusivity different from that of the above compound under alkaline conditions.The function of Y allows for diffusion in the silver developing area. There are two types of compounds: negative-type compounds that become active and positive-tone compounds that become diffusive in undeveloped areas.

Specific examples of negative-type Y include those that oxidize and cleave as a result of development to release a diffusible dye.

Specific examples of Y are given in U.S. Pat. No. 3,928.312 and 3.
No. 993,638, No. 4,076.529, No. 4,1
No. 52,153, No. 4,055,428, No. 4,05
No. 3,312, No. 4,198゜235, No. 4,179
, No. 291, No. 4,149.892, No. 3,844,
No. 785, No. 3゜443.943, No. 3,751,4
No. 06, No. 3.443.939, No. 3,443,94
No. 0, No. 3.628,952, No. 3.980,479
No. 4,183.753, No. 4,142,891, No. 4,278,750, No. 4.139379, No. 4,228,368, No. 3,421.964, No. 4
, No. 199,355, No. 4199.354, No. 4.1
35.929, 4.336, 322, 4.13
No. 9,389, JP-A-53-50736, JP-A No. 51-1
No. 04343, No. 54-130122, No. 53-11
No. 0827, No. 56-1.2642, No. 56-161
No. 31, No. 57-4043, No. 57-65゜, No. 5
No. 7-20735, No. 53-69033, No. 54-1
No. 30927, No. 56-164342, No. 57-11
It is described in No. 9345, etc.

Among Y of the negative dye-releasing redox compound, a particularly preferable group is an N-substituted sulfur 1-moyl group (the N-substituent is a group derived from an aromatic hydrocarbon ring or a heterocycle). . Typical groups for Y are illustrated below, but are not limited to these.

For positive-type compounds, Angewante Hemi International Edition Ingrids (An
gev, Chew, In5t, Ed, Hngl
, ) + 22191 (1982).

A specific example is a compound (dye developer) that is initially diffusible under alkaline conditions but becomes non-diffusible by oxidation during development.U.S. Pat. No. 2,983,606 is an effective Y for this type of compound. The ones listed in this issue are representative.

Another type is one that releases a diffusible dye by self-closing under alkaline conditions, but substantially ceases to release the dye when oxidized during development. For specific examples of Y having such a function, see U.S. Pat.
54-130927, U.S. Patent No. 3,421,964,
4°199.355, etc.

Another type is one that does not itself release any pigment, but
Some release dyes when reduced.

This type of compound is used in combination with an electron donor,
The diffusible dye can be released imagewise by reaction with the remaining electron donor imagewise oxidized by silver development. Regarding atomic groups having such functions, for example, U.S. Pat. No. 4,183,753 and U.S. Pat. 4.278.750, 4,139,379, 4.2
18.368, JP 53-110827, U.S. Patent 4
゜278.750. 4,356,249, 4゜35
8.525, JP 53-110827, JP 54-13
0927, 56-164342, Public Technical Report 87-61
99, European Patent Publication No. 220746A2, etc.

Specific examples are shown below, but the invention is not limited to these.

CHtsu C eyes H hot S CHI has been done.

Yet another type of dye image formation T! As a specific example of yJ quality,
You can also use the following:

I4833 When compounds of this type are used, they are preferably used in combination with diffusion-resistant electron donor compounds (known as ED compounds) or their precursors, E.
Examples of compounds D include, for example, U.S. Pat. No. 4,263,39
No. 3, No. 4,278°750, JP-A-56-1387
No. 36, etc. (in the formula, DYE represents a dye having the same meaning as mentioned above or its precursor). Details of this are described in U.S. Pat. No. 3,719,489 and U.S. Pat. No. 4.09
No. 8,783.

On the other hand, specific examples of the dye represented by the general formula DYE are described in the following literature.

Examples of yellow dyes: U.S. Pat. No. 3,597,200, U.S. Pat. No. 3,309,199,
4,013,633, 4,245.028, 4,156,609, 4゜139.383, 4
, No. 195,992, No. 4.148,641, No. 4,
No. 148,643, No. 4,336.322; Japanese Unexamined Patent Publication No. 1973
No. 1-114930, No. 56-71072: Re5
arch1)isclosurel 7630 (1
No. 978) and No. 16475 (1977).

Example 2 of magenta dye U.S. Pat. No. 3,453.107, U.S. Pat. No. 3.544545, U.S. Pat.
No. 3,932,308, No. 3954.476, No. 4.233,237, No. 4.255.509, No. 4
, No. 250,246, No. 4,142,891, No. 4,
No. 207,104, No. 4,287,292: Unexamined Japanese Patent Publication No. 5
2-1゜6.727, 52-106727, 5
No. 3-23,628, No. 55-36,804, No. 56
-73,057, 56-71060, 55-1
What is stated in No. 34.

Examples of cyan dyes: U.S. Pat. No. 3,482,972, U.S. Pat. No. 3,929,760, U.S. Pat.
4,171,220, 4242.435, 4
, No. 142,891, No. 4.195,994, No. 4,
No. 147,544, No. 4,148.642; U.S. Patent No. 1.551138: JP-A-54-99431, No. 5
No. 28827, No. 53-47823, No. 53-■43
No. 323, No. 54-99432, No. 56-71061
No.: European Patent (EPC) No. 53037, No. 53
, 040; Re5search Disclosure
re17.630 (197B), and re16,47
5 (1977).

C) Silver halide emulsion The silver halide emulsion used in the present invention may be a negative emulsion that mainly forms a latent image on the surface of silver halide grains, or
It may be an internal latent image type direct positive emulsion that forms a latent image inside the silver halide grains.

Internal latent image type direct positive emulsions include, for example, so-called "conversion type" emulsions that are made by taking advantage of the solubility difference of silver halides, and emulsions that are doped with metal ions, chemically sensitized, or both. "Core/shell type" in which at least the photosensitive sites of the coated silver halide inner core grains are covered with a silver halide outer shell.
There are emulsions, etc., which are described in US Pat. No. 2,592.
250, 3,206.313, British Patent 1°027.
146, U.S. Patent No. 3,761,276, U.S. Patent No. 3,935□
014, 3,447,927, 2,497,875
, 2,563,785, 3,551,662, 4
, 395,478, West German Patent No. 2,728,108, and US Pat. No. 4,431,730.

Further, when using an internal latent image type direct positive emulsion, it is necessary to provide fog nuclei on the surface by using light after image exposure or by using a nucleating agent.

As a nucleating agent for this purpose, U.S. Patent No. 2.563.78
5, hydrazines described in 2.588,982,
Hydrazides and hydrazones described in U.S. Patent No. 3,227.552, British Patent No. 1.283,835, JP-A-52-69613, U.S. Patent No. 3,615,615, No. 3
,719,494, 3,734,738, 4.09
Heterocyclic quaternary salt compounds described in U.S. Pat. No. 4.683, U.S. Pat. , U.S. Patent No. 4,030.925, U.S. Patent No. 4,031,1
27, 4,245,037, 4,255,511,
4,266.013, 4,276.364, British Patent 2. 012. 443, etc., and U.S. Patent No. 4,080.
, 270, 4,278,748, British Patent 2,011
For example, acylhydrazine compounds having a thioamide ring or a heterocyclic group such as triazole or tetrazole bonded as an adsorption group, as described in , 391B, etc., can be used.

In the present invention, a spectral sensitizing dye is used in combination with these negative emulsions and internal latent image type direct positive emulsions.

For specific examples, see JP-A-59-180550,
No. 60-140335, Research Disclosure (RD) 17029, U.S. Patent No. 1°846.300,
2,078,233, 2゜089.129, 2,
165,338, 2231.65B, 2,917,
516, 3゜352.857, 3,411,916
, 2°295.276, 2.481,698, 2nd
゜688.545, 2,921.067, 3゜28
2.933, 3,397,060. 3660.10
3, 3,335,010, 3352.680, 3
, 384.486, 3°623.881, 3,71
8.470, 4°025.349, etc.

(3) Structure of the photosensitive layer In order to reproduce natural colors by the desensitization method, it is necessary to form a dye image that provides a dye having selective spectral absorption in the same wavelength range as the emulsion spectrally sensitized with the above-mentioned spectral sensitizing dye. A photosensitive layer consisting of at least two in combination with a substance is used. The emulsion and the dye image-forming substance may be coated as separate layers, or
Alternatively, they may be mixed and applied as a single layer. A separate layer is preferable when the dye image-forming material coated has absorption in the spectral sensitivity range of the emulsion with which it is combined.

Further, the emulsion layer may be composed of a plurality of emulsion layers having different sensitivities, and an arbitrary layer may be provided between the emulsion layer and the dye image forming material layer. For example, JP-A-60-17354
A layer containing the nucleating development accelerator described in 1, Japanese Patent Publication No. 1983-
It is also possible to increase the color image density by providing a barrier layer as described in JP-A No. 15267, and to increase the sensitivity of the photosensitive element by providing a reflective layer as described in JP-A No. 60-91354.

In a preferred multilayer structure, a combination unit of a blue-sensitive emulsion, a combination unit of a green-sensitive emulsion, and a combination unit of a red-sensitive emulsion layer are arranged in this order from the exposure side.

Any layer may be provided between each emulsion layer unit, if necessary. In particular, interlayers are provided to prevent the effects of development of one emulsion layer from having undesirable effects on other emulsion layer units.

When a developer is used in combination with a non-diffusible dye image-forming substance, the intermediate layer preferably contains a non-diffusible reducing agent to prevent diffusion of the oxidized developer. Specifically, non-diffusible hydroquinone, sulfonamide phenol,
Examples include sulfonamide naphthol, and more specifically, JP 50-21249, JP 50-23813, JP 49-106329, JP 49-129535, US Pat. No. 2,336,327, US Pat. No. 2,360,290 , same 2
, 403,721 2,544.640, 2,732
．． 300, 2,782,659, 2,937.08
6, 3,637,393, 3,700.453, British Patent 557,750゜ Japanese Patent Publication No. 57-24941, 5
8-21249 etc. 2,937,086, 3,637
, 393, 3,700,453, British Patent 557,7
50, JP-A No. 57-24941, JP-A No. 58-21249, etc. Dispersion methods thereof are described in JP-A No. 60-238831 and JP-B No. 60-18978.

In the present invention, an irradiation prevention layer, an isolation layer, a protective layer, etc. are applied as necessary.

The support for the color photosensitive material of the present invention generally includes:
Examples include paper and synthetic polymers (films). Specifically, polyethylene terephthalate, polycarbonate, polyvinyl chloride, polystyrene, polypropylene, polyimide, cellulose (e.g. triacetyl cellulose)
Or these films containing pigments such as titanium oxide, film method synthetic paper made from polypropylene etc., mixed paper made from synthetic resin pulp such as polyethylene and natural pulp, Yankee paper, baryta paper, Coachit paper (especially Cast Coat Gi),
Metal, cloth, glass, etc. are used.

These can be used alone, or can be used as a support laminated on one or both sides with a synthetic polymer such as polyethylene.

In addition, JP-A-62-253159 (29) to (3)
The supports described on page 1) can be used.

A hydrophilic binder, alumina sol, a semiconductive metal oxide such as tin oxide, carbon black or other antistatic agent may be applied to the surface of these supports.

In the present invention, a light-shielding layer may be provided for the purpose of completely shielding the photosensitive layer from external light during development processing to enable processing under daylight. Specifically, a light-shielding layer may be provided on the back side of the support or A layer containing a light shielding agent is coated between the emulsion layer and the support, or
Alternatively, a layer containing a light shielding agent may be provided in the support. Although any material having a light blocking function can be used, carbon black is preferably used.

The binder used to apply the light shielding agent may be any binder that can disperse carbon black, and gelatin is preferred.

In the present invention, a release layer is provided between the emulsion layer combined with the dye image-forming material and the dye image-receiving layer, and the emulsion layer may be peeled off after processing. Materials for this purpose must be able to maintain adhesion between the layers and be easy to peel off after treatment.
9-229555, 49-4653, U.S. Patent 322
0835, 43595] 8, JP-A-49-4334,
No. 56-65133, No. 45-24075, U.S. Patent 3
227550, 2759825, 4401746,
4366227 and the like can be used. One specific example is a water-soluble (or alkali-soluble) cellulose derivative. For example, hydroxyethyl cellulose, cellulose acetate
phthalates, plasticized methylcellulose, ethylcellulose, cellulose nitrate, carboxymethylcellulose, etc., and other examples include various natural polymers, such as alginic acid, pectin, gum arabic, etc., and various modified gelatins, such as acetylated Gelatin, phthalated gelatin, etc. are also used. Furthermore, other examples include water-soluble synthetic polymers such as polyvinyl alcohol, polyacrylate, polymethyl methacrylate, butyl methacrylate, or copolymers thereof.

The release layer may be a single layer or may be composed of a plurality of layers.
-60642 etc.

The image receiving layer used in the present invention contains a mordant in a hydrophilic colloid. This may be a single layer or a multilayer structure in which mordants having different mordant powers are applied in layers. This is described in JP-A-61-252551. As the mordant, a polymer mordant is preferred.

The polymer mordants used in the present invention are polymers containing secondary and tertiary amino groups, polymers having nitrogen-containing heterocyclic moieties, polymers containing these quaternary cation groups, etc., and those having a molecular weight of 5,000 or more are particularly preferable. is 10.00
It is 0 or more.

For example, U.S. Pat. No. 2,548. ．． No. 564, 2゜48
No. 4.430, No. 3,148,061, No. 3.756
Vinylpyridine polymers and vinylpyridinium cationic polymers disclosed in U.S. Pat. No. 4,124.386 and others;
, No. 625.694, No. 3,859,096, No. 4.
128538, British Patent No. 1,277.453, and other polymer mordants capable of crosslinking with gelatin; US Pat. No. 3,958.995, British Patent No. 2.721
No. 852, No. 2.798.063, Japanese Unexamined Patent Publication No. 1983-11
No. 5.228, No. 54-1.45529, No. 54-1
No. 26,027, No. 54155.835, No. 56-1
Aqueous sol-type mordants disclosed in U.S. Pat. No. 7.352, etc.; water-insoluble mordants disclosed in U.S. Pat. No. 3,898,088, etc.; U.S. Pat. No. 4,168.976, U.S. Pat. , No. 840, etc.; a reactive mordant capable of forming a covalent bond with the dye disclosed in U.S. Pat.
, No. 709.690, No. 3.788.855, No. 3
．． No. 642,482, No. 3,488,706, No. 3,557,066, No. 3,271,147, No. 3,271°148, JP-A-51-30328,
No. 52-155528, No. 53-125, No. 53-
No. 1024, No. 51107.835, British Patent 2.0
Examples include mordants disclosed in US Pat. No. 64,802 and the like.

Others: U.S. Patent No. 2,675,316, U.S. Patent No. 2゜882
．． Mention may also be made of the mordants described in No. 156.

In the present invention, a system for neutralizing the pH of the alkaline processing liquid can be provided in the cover sheet, the layer adjacent to the image receiving layer, etc. A neutralization system can be achieved by providing a neutralization layer and a neutralization timing layer. This timing layer is placed between the processing solution and the neutralization layer in a positional relationship such that the alkaline processing solution reaches the neutralization layer via the timing layer, and maintains a high pH for a certain period of time. After that, there is a process in which the pH drops dramatically (an "inverted S" shape).
(PH lowering process called PH reduction process). Preferably, the pH is 10.5 or less at the time of peeling. The period of maintaining this high pH is controlled by the components, composition, coating amount, etc. of the neutralization timing layer.

Such polymers include ethylenically unsaturated monocarboxylic or dicarboxylic acids (e.g. acrylic acid,
methacrylic acid, itaconic acid) and one or more types of ethylenically unsaturated monomers that can be copolymerized, polymers such as those described in JP-A-59-202463, and U.S. Pat. No. 4,297.431,
4.288.523, 4.201.587, 4.229.516, JP-A-55-121438,
No. 56-166212, No. 55-41490, No. 5
No. 5-54341, No. 56-102852, No. 57-
No. 141644, No. 57-173834, No. 57-1
No. 79841, West German Patent Application Publication (OLS) 2,910
, No. 271, European Patent Application Publication EP 31. 9
57A 1. Re5earchDisclosure
18452 etc. can be mentioned. Examples of ethylenically unsaturated monomers include ethylene, propylene, l-butene, isobutyne, styrene, chloromethylstyrene, hydroxymethylstyrene, sorta vinylbenzenesulfonic acid, sodium vinylbenzylsulfonate, N,N,N-trimethyl-N -vinylbenzylammonium chloride, N,N-dimethyl-N-benzyl-N-vinylbenzylammonium chloride, α-
Methylstyrene, vinyltoluene, 4-vinylpyridine, 2-vinylpyridine, benzylvinylpyridinium chloride, N-vinylacetamide, N-vinylpyrrolidone, l-vinyl-2-methylimidazole, monoethylenically unsaturated esters of fatty acids (e.g. vinyl acetate, allyl acetate), maleic anhydride, esters of ethylenically unsaturated monocarboxylic or dicarboxylic acids (e.g. n
-Butyl acrylate, n-hexyl acrylate, hydroxyethyl acrylate, cyanethyl acrylate -
)-2N,N-diethylaminoethyl acrylate, methyl methacrylate, n-butyl methacrylate, hensyl methacrylate, hydroxyethyl methacrylate, chloroethyl methacrylate, methoxyethyl methacrylate, N,N-diethylaminoethyl methacrylate, N,N,N-triethyl- N-methacryloyloxyethylammonium P-toluenesulfonate, NN
-diethyl-N-methyl-N-methacryloyloxyethylammonium p-toluenesulfonate, dimethyl itaconate, maleic acid monobenzyl ester), amides of ethylenically unsaturated monocarboxylic or dicarboxylic acids (e.g. acrylamide, N,N- Dimethylacrylamide, N-methylolacrylamide, N-(N,
N-dimethylaminopropyl)acrylamide, N,N
, N-1remethyl-N-(N-acryloylpropyl)ammonium-p-toluenesulfonate, sodium 2-acrylamido-2-methylpropanesulfonate, acryloylmorpholine, methacrylamide, N,N-dimethylN'-methacryloylpropane diamine probio N,N-dimethyl-N'-methacryloylpropanediamine acetate betaine) and the like.

The neutralization timing layer may be a single layer or multiple layers.

In addition, timing layers made of these materials are covered by, for example, U.S. Patent No. 4,009,029, West German Patent Application (OLS)
, No. 913, 164, 3. 014,672, JP-A-54-155837, JP-A-55-138745, etc., the development inhibitor and/or its inhibitor 1/cursor 1, and U.S. Pat. No. 4,201.578. It is also possible to incorporate the disclosed hydroquinone precursor, other additives useful for photography, or precursors thereof.

Conventionally known acidic substances can be used as the acidic substance for the neutralization layer, and there are no particular restrictions. Preferred acidic substances include p)(
a is a substance containing an acidic group of 9 or less (or a precursor group that provides such an acidic group upon hydrolysis), more preferably an oleic acid as described in U.S. Pat. No. 2,983,606; higher fatty acids such as, polymers of acrylic acid, methacrylic acid or maleic acid and their partial esters or acid anhydrides as disclosed in U.S. Pat. No. 3,362,819; French Patent No. 2,290.6
copolymers of acrylic acid and acrylic esters, such as those disclosed in U.S. Pat.
2 (1,977), latex type acidic polymers can be mentioned.

Others: U.S. Patent No. 4,088,493, Japanese Unexamined Patent Publication No. 52
-153739, 53-1023, 53-45
Acidic substances disclosed in No. 40, No. 53-4541, No. 53-4542, etc. can also be mentioned.

Specific examples of acidic polymers include ethylene, vinyl acetate,
Copolymers of vinyl monomers such as vinyl methyl ether and maleic anhydride, n-butyl esters thereof, copolymers of butyl acrylate and acrylic acid 1. These include cellulose, acetate, and hydrogen phthalate.

The polymeric acid can be used in combination with a hydrophilic polymer. Examples of such polymers include polyacrylamide, polymethylpyrrolidone, polyvinyl alcohol (including partially saponified products), carboquine methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose 1, polymethylvinyl ether, and the like. Among these, polyvinyl alcohol is preferred.

The amount of polymeric acid applied is controlled by the amount of alkali developed on the photosensitive element. The equivalent ratio of polymer acid to alkali per unit area is 0. 9 to 2.0 is preferable. If the amount of polymer acid is too small, the hue of the transferred dye may change,
It causes staining in colored areas, and if too much of it is used, problems such as a change in hue or a decrease in light fastness occur. A more preferable equivalent ratio is 1.0 to 1.3. If the amount of hydrophilic polymer mixed is too large or too small, the quality of the photograph will deteriorate. The weight ratio of hydrophilic polymer to polymeric acid is between 0.1 and 10, preferably between 03 and 3.0.

Additives can be incorporated into the layer having a neutralizing function for various purposes, such as hardening agents well known to those skilled in the art to effect hardening of this layer, and also to improve the brittleness of the film. Polyhydric hydroxyl compounds such as polyethylene glycol, polypropylene glycol, glycerin, etc. can be added. In addition, antioxidants, dyes, etc. may be added as necessary.

5. The processing composition used when wet-processing the color photosensitive material of the present invention is uniformly spread on the photosensitive element after exposure of the photosensitive element and completely blocks the photosensitive layer from external light. At the same time, the components contained therein develop the photosensitive layer. For this, the composition contains alkalis, thickeners,
Contains a developer and a light shielding agent as essential components, and further contains a development accelerator and a development inhibitor to control development, an antioxidant to prevent deterioration of the developer, and a cover sheet side that protects the dye generated in the image form. Contains white pigment etc. to enable previewing.

The alkali is sufficient to adjust the pH of the liquid to 12 to 14, and includes alkali metal hydroxides (e.g., sodium hydroxide, potassium hydroxide, lithium hydroxide), alkali metal phosphates (e.g., potassium phosphate). , guanidines,
Examples include hydroxides of quaternary amines (eg, tetramethylammonium hydroxide), and among them, potassium hydroxide and sodium hydroxide are preferred.

Thickeners are used to spread the processing solution uniformly, and when peeling off the used photosensitive layer along with the cover sheet, the thickener is used for photosensitive N.
/Necessary to maintain adhesion between the cover sheets. For example, an alkali metal salt of polyvinyl alcohol, hydroxyethyl cellulose, or carboxymethyl cellulose is used, and preferably hydroxyethyl cellulose,
Sodium carboxymethylcellulose is used.

As the light-shielding agent, any dye or pigment, or a combination thereof, can be used as long as it does not diffuse into the dye image-receiving layer and cause staining, and carbon black is preferably used.

The amount of light shielding agent added is sufficient to sufficiently shield the photosensitive element during processing under strong external light, and is 30 g or more per 1 kg of processing solution.
200g, preferably 40g to 120g.

Any white pigment can be used as long as it does not have adverse effects photographically. For example, inorganic titanium white pigments as well as aerial polymer beads (e.g. Rohs a
0P-84 (trade name) manufactured by ND Hass, Inc.) can also be used.

The content of white pigment is 50g to 400g per 1kg of processing liquid.
g, preferably 100 g to 300 g.

Preferred developing agents include any that cross-oxidizes the dye image-forming material and does not substantially stain when oxidized.

Such developers may be used alone or in combinations of two or more, and may be used in the form of precursors.These developers may be included in an appropriate layer of the light-sensitive element, or may be used in alkaline processing. It may also be included in the liquid. Specific compounds include aminophenols and pyrazolidinones, and among these, pyrazolidinones are particularly preferred because they generate less stain.

For example l-phenyl-3-pyrazolidinone, 1-P-
) Glue 4,4-dihydroxymethyl-3-pyrazolidinone, 1-(3'-methyl-phenyl)-4-methyl-4-hydroxymethyl-3-pyrazolidinone, l-phenyl-4-methyl-4-hydroxenemenalu 3 -pyrazolidinone, p-toly-4-methyl-4-hydroxymethyl-3-pyrazolidinone, and the like.

When applied to a heat-developable photosensitive material, these developers are preferably incorporated into the photosensitive material.

Examples of specific contents of the present invention are shown in the following examples, but the present invention is not limited thereto.

In particular, various formats and layer configurations are possible, and the present invention can be effectively utilized and produce useful effects as long as the configuration has an image-receiving layer and a dye-releasing compound-containing layer.

(Example) Example 1 A carbon black layer (
Carbon black 3.0g/rd, gelatin 4.5g/
nf) and titanium oxide layer (titanium oxide 3, Og/
A. Containing 1.0 g/- of gelatin) was coated.

Next, the following layers were sequentially coated on the opposite side of the light-shielding layer of this support to prepare an image-receiving photosensitive sheet.

(1) Add 3 g of the following polymer latex mordant/
Image receiving layer comprising nr and gelatin 3 g/rd.

(2) A first release layer consisting of 0.1 g/rrl of the following compound.

Hj ICH! -GO)-, -cco, -cto, x/y
=85/15COOHC00C48! (3) Acetylation degree 51% cellulose acetate 0.7g/M
A second release layer consisting of.

(4) Ethyl acrylate latex Ig/n (
, a layer containing 2.5 g/rrr of gelatin and the polymer of Table 1.

(5) 044g of the following cyan dye-releasing redox compound
/rr? , tricyclohexyl phosphate 0.09
g/bo, 2,5-G[-pentadecylhydroquinone 0.008g/rrr, carbon blank 0.05g/
Layer (6) containing 2 g/rd of titanium oxide and 0.8 g/nf of gelatin and 0.8 g/nf of gelatin. 5
A light reflecting layer containing g/Irf.

(7) Octahedral internal latent image type direct positive silver bromide emulsion with a grain size of 1.0 μm (silver amount: 0.15 g/rr?), red-sensitive sensitizing dye, gelatin 0.48/nf, the following: Nucleating agent (
NA)1. lag/rrf, and 2-sulfo-5
-n-pentadecylhydroquinone sodium salt 0.
A low-speed red-sensitive emulsion layer containing 0.02g/rrr.

NA Sensitive emulsion layer.

(9) 2.5 G-Shiichi bentadetyl hydroquinone 1.2g/r+f, polymethyl methacrylate 1.2
g/nf and 0.7 g/nf of gelatin.

00) Layer containing 0.3 g/rrr of gelatin.

The following magenta dye releasing redonx compound 0.15
g/rrf,) cyclohexyl phosphate 0.1g
/n(, layer containing 0.009 g/rrf of 2,5-di-pentadecylhydroquinone and 0.9 g/m of gelatin.

H (83 octahedral internal latent image type direct positive silver bromide emulsion with grain size 1.6 μm (0.5 g/rrr in silver content), red-sensitive sensitizing dye, gelatin 0.8 g/rrf, layer 01 ) Same nucleating agent (NA) 3.0 μg/po and 2-sulfo-
5-n-pentadecylhydroquinone sodium salt 0
．． 02) A light reflecting layer containing titanium oxide l g/rrl and gelatin 0.25 g/rrr.

θ■ Particle size 1. Opm's octahedral internal latent image type direct positive silver bromide emulsion (0.12 g/nf silver content), green-sensitive sensitizing dye, gelatin 0.25 g/rd, layer 01) and the same nucleating agent (NA). )1. lug/bo and 2 sulfo-5-n
-Pentadecylhydroquinone/strium salt 0.02
Low speed blue sensitive emulsion layer containing g/rrf.

θno Octahedral internal latent image type direct positive silver bromide emulsion with a grain size of 1.6 μm (silver content: 0.35 g/nf), green-sensitive sensitizing dye, gelatin 0,7 g/nL N(I
f) Same nucleating agent (NA) 1.7 μg/nl and 2-
Highly sensitive green-sensitive emulsion layer containing 0.04 g/nf of sulfo-5-n-pentadecylhydroquinone sodium salt.

0ω 2,5-di-L-pentadecylhydroki, non-0.8g/n? , polymethyl methacrylate 0°8g
, /n (and color mixture prevention layer containing 0.45 g/rrf of gelatin, 0ω layer containing 0.3 g/rrf of gelatin.

07) Yellow dye-releasing donx compound with the following structure (
0.53g/rrr), tricyclohexyl phosphate
1-(0.13g/po), 2+5-di-pentadecylhydroquinone 0. 014 gird) and gelatin (0,7 g/m).

00 Titanium oxide 0.7g/n (and gelatin 09
Light reflective layer containing 18g/bo.

09 Octahedral internal latent image direct positive silver bromide emulsion with a grain size of 1.1 μm (silver content 0.25 g/bo), blue-sensitive sensitizing dye, gelatin 0.48/nf, same structure as layer 011. Nucleating agent (NA) 2 μg/bo, and 2-sulfo-5-n-
Pentadecylhydroquinone sodium salt 0.045
8/n? A low-speed blue-sensitive emulsion layer containing

QO grain size 1.7 μm octahedral internal latent image type direct positive silver bromide emulsion (silver content 0.42 g/nf), blue-sensitive sensitizing dye, gelatin 0.45 g/nf, same structure as layer 00. Nucleating agent (NA) 3.3 μg/po, and 2-sulfo-5n-pentadecylhydroquinone sodium salt 0.025 g
High-sensitivity green-sensitive emulsion layer containing /rrf.

(21) 4x10 each of the following ultraviolet absorbers
- UV absorbing layer containing 1 mole/rrf and 0.5 g/rrf of gelatin.

A cover sheet was prepared by coating in the following order onto a polyethylene tereclate support containing an anti-light piping dye and subbed with gelatin.

(a) Acrylic acid-butyl acrylate (molar ratio 8:2) copolymer with an average molecular weight of 50,000 Io, 4 g/I and 1,4-bis(2,3-epoxypropoxy)-butyl 70.1 g/mouth f (b) Neutralized timing layer CHt (: tl 5 COOCH! C00C2H, Oli
C00H(C) Gelatin 1.0g/rrf
and a layer (22) consisting of a polymer with the following structure 1.0g/rf, a matting agent and gelatin 0.5g/rrf
A protective layer containing.

After 2 minutes and 30 seconds after the treatment solution was developed, it was peeled off and the concentration was measured to determine Dm.
ax, D+iin was obtained.

As is clear from Table 1, when the photosensitive sheet of the present invention is used, Dmin is significantly lowered.

Each of the film units was exposed to light from the cover sheet side using a gray wedge, and then developed at 25° C. by spreading the processing solution to a thickness of 70 μm using a pressing member. Processing Example 2 of Each Film Uni-Node A laminated integrated color diffusion transfer photosensitive sheet and a cover sheet were prepared as follows.

Photosensitive sheets 6 to 10 were prepared by coating each layer in the following order on a 22bm polyethylene terephthalate transparent support.

(1) Copoly[styrene-N-vinylbenzyl-N
-Methyl-piperidinium chloride] 3.0g/rr
r, gelatin 3. Image receiving layer containing Og/rrf.

(2) Titanium dioxide 20g/r, gelatin 2.0g/r
A white reflective layer containing I'f.

(3) Carbon black2. 0g/n (and gelatin 1
, 5 g/rI'f, and a light-shielding layer containing the polymer shown in Table 2.

(4) The following cyan dye-releasing redonx compound 0.44
g/rrf, tricyclohexyl phosphate 0.09
g/nf, 285-di-L-pentadecylhydroquinone 0. 008 g/ni, and gelatin 0.8 g/ni
A layer containing A.

0CHzCIItOCHs \ SOgCIIi (5) Red-sensitive inner layer type direct positive silver bromide emulsion (1.
03g/rd), gelatin 1. 2g/n? , a red-sensitive emulsion layer containing 0.04 g/% of the following nucleating agent and 0.13 g/% of 2-sulfo-5n-pentadecylhydroquinone sodium salt.

(9) Same layer as (6).

0■ Yellow dye-releasing redox compound with the following structure (
0,53 g/rrr), tricyclohexyl phosphate (0,13 g/n?), 2,5-pentadecylhydroquinone (0,014 g/rrf) and gelatin (0,7 g/n()).

01) Blue-sensitive inner layer type direct positive silver bromide emulsion (1.
Gelatin (1.1g/I), the same nucleating agent as layer (5) (0.04g/I), 2-sulfo-5-n-
Pentadecylhydroquinone sodium salt (0.07
A blue-sensitive emulsion layer containing g/rl().

Q21 4 x 10 each of ultraviolet absorbers with the following structure
mol/rrf, and gelatin 0.308/rrr (6) 2,5-di-t-pentadecylhydroquinone 0
．． 43g/rr+, trihexyl phosphate 0.1g
/nl and 0.4 g/nf of gelatin.

(7) Add the following maze/repigment-releasing redox compound to 0.
3g/rd, )licyclohexylphosphate) (0
, 08g/n), 2. 5-G Ler
L-pentadecylhydroquinone (0,009g/rr
f) and a layer containing gelatin (0,5 g/nf).

(8) Chlorophore endocrine type direct positive silver bromide emulsion (0 in amount of 11)
．． 82g/a), gelatin (0.9g/b), layer (5)
The same nucleating agent (0,03 ■/i) and 2-sulfo-5
-n-pentadecylhydroquinone sodium salt (0
, 088/rrr).

UV absorbing layer.

0 hot water Polymethyl methacrylate latex (average particle size 4 μ, 0.10 g/rrf), gelatin (
0.8 g/m) and triacryloyltriazine as hardener (0.02 g/rrf).

A cover sheet was prepared by sequentially coating the following layers (1') to (4') on a transparent polyethylene terephthalate support.

(1') Acrylic acid-butyl acrylate (weight ratio -8=2) copolymer with an average molecular weight of 50.000 was added at 10 g/i and l,4-bis(2,3-epoxypropoxy)-
Neutralization layer (2') coated with butane 0.2 g/rrf Cellulose acetate with a degree of acetylation of 51.0% and methyl vinyl ether-maleic acid monomethyl ester alternating copolymer were coated at 7.5 g/rrf at a weight ratio of 9515. Second timing layer.

(3') Methyl vinyl ether-maleic anhydride alternating copolymer 1.05 g/n (and 5-(2-anor 1-
0.98 m of methyl 1,000-1-phenyltetrazole
Auxiliary neutralization layer containing mol/rrf.

(4') Styrene-n-butyl acrylate acrylic acid-N-methylolacrylamide 49.7 vs. 42.3
93 of 3 to 5 copolymer latex and methyl methacrylate-acrylic acid-N-methylolacrylamide
A first timing layer having a thickness of 2 μm is prepared by mixing a 4:3 (weight ratio) copolymer latex such that the solid content ratio of the former latex and the latter latex is 6:4.

The photosensitive sheets 6 to 10 thus prepared were exposed with a continuous wedge, and then the processing solution and cover sheet were combined and spread through a pair of pressure rollers. After 1 hour, 1 degree was measured using a color densitometer, and the Dma shown in Table 2 was obtained.
x, Dmin was obtained.

As is clear from Table 2, it can be seen that the photosensitive sheet of the present invention is excellent in that Dmin is significantly reduced.

Claims (1)

[Claims] a layer containing a dye-donating compound capable of providing a diffusible dye in combination with a silver halide emulsion; an image-receiving layer capable of mordanting the dye;
and a color diffusion transfer photographic light-sensitive material having a neutralizable neutralization layer, characterized in that a polymer containing a lactam ring as a repeating unit is present in a layer located between a dye-releasing compound-containing layer and an image-receiving layer. Color diffusion transfer photographic light-sensitive material.