JPS6060643A - Photographic element - Google Patents

Abstract

PURPOSE:To enhance light fastness of a mordanted dye image and its max. density, etc. by incorporating a mordant of a polymer having specified monomer units as structural components in a mordant layer. CONSTITUTION:An intended photographic element is obtained by forming at least one mordant layer contg. a polymer mordant contg. as monomer units as structural components each represented by formula I in which A is a vinyl monomer unit having a hetero ring having >=2N atoms as tertiary amines; B is a vinyl monomer unit having a quaternary ammonium salt group; and C is a vinyl monomver unit having neither tertiary amine nor quaternary ammonium salt; (x), (y) are each 2-98mol%; and (z) is 0-90mol%. A suitable example of said polymer is a polymer having >=10,000mol.wt. having as structural components three kinds of monomer units represented by formulae II, III, and IV.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to photographic elements, and more particularly to novel polymers that are good mordants for dyes used in photographic elements and photographic elements using the same.

More specifically, it relates to - a mordant for fixing imagewise produced diffusible dyes, and color photographic elements employing a layer containing this mordant.

In the field of photography, it is well known to use various quaternary ammonium salt polymers in the mordant layer for the immobilization of anionic dyes.
Various polymeric mordants are disclosed, such as in U.S. Pat. No. 3,707,1,90, et al. However, since this type of mordant does not have sufficient mordant properties for dyes, it has drawbacks such as difficulty in increasing the density of the dye image and the 0 degrees of the image decreasing over time.

To improve mordanting properties, Cohen et al., US Patent 3. a water-insoluble polymer mordant as described in R.R., ore, or Campbell
) et al., U.S. Patent 3. the law of nature! ! , Tata! A water-dispersible polymer mordant was proposed as described in No. However, although this type of dyeing agent exhibits good mordanting properties for dyes, it has another drawback in that it has a poor ability to retain mordanted dyes in a stable form. In other words, photographic systems containing dye images mordanted with this type of mordant have the disadvantage that the mordanted dye images are susceptible to chemical deterioration or decomposition when irradiated with fluorescent lights or sunlight. there was.

Therefore, the first object of the present invention is to
The object of the present invention is to provide a photographic element that undergoes less chemical change or decomposition due to light.

A second object is to provide a photographic element capable of producing dense dye images.

A third object of the present invention is to provide a novel mordant that provides dye images with good density.

The above object has been achieved by a photographic element which uses as a mordant a polymer having as a constituent monomer units represented by the following general formula (I).

General formula (1) % formula % [In the formula, A represents a vinyl monomer unit having a heterocycle containing two or more nitrogen atoms as a tertiary amine. BVi represents vinyl monomer units with quaternary ammonium salts. C represents a vinyl monomer unit having neither a tertiary amine nor a quaternary ammonium salt. XF'i ko or 2
g momol, yFi koft Ishiri male morchi, 2 is O to 2Q morchi.

A, B, and C may contain two or more types of monomers, as long as they each meet the definitions. ] That is, the inventors used as a mordant a polymer having as a constituent component a vinyl monomer unit having a heterocycle containing two or more nitrogen atoms and a vinyl monomer unit having a quaternary ammonium salt as a tertiary amine. It has been found that light-induced chemical changes or degradation of mordanted dye images is significantly reduced.

The detailed reason for this is unknown, but the dye mordanted with the quaternary ammonium salt is stabilized by the heterocycle containing two or more 9-atomic atoms, and undergoes chemical change or decomposition due to light, resulting in K<<. It is estimated that there are.

Vinyl monomer unit +A in general formula (I) of the present invention
Specifically, + is preferably represented by the following general formula (It).

General formula (11) %Formula% () [In the formula, R1 represents a hydrogen atom or a lower alkyl group having /~ carbon atoms. L represents a divalent linking group having /- and 20 carbon atoms. (2) represents a heterocycle containing two or more nitrogen atoms as a tertiary amine. n is O or l. ]R1 is a hydrogen atom or carbon number l
~ is a lower alkyl group, such as methyl group, ethyl group, n-propyl group, n-butyl group, n-amyl group, n-
It represents a hexyl group, etc., and a hydrogen atom or a methyl group is particularly preferred.

L is a divalent linking group having /-20 carbon atoms, such as an alkylene group (e.g. methylene group, ethylene group, trimethylene group, hexamethylene group), phenylene group (
For example, it represents an 0-phenylene group, a p-phenylene group, a m-phenylene group, and an alkylene group of 712. L
-co2-.

-CO2-Ra- (however, H and 3 represent an alkylene group, a phenylene group, or an arylene alkylene group), -CO
NH-Ra- (However, 1 (3 represents the same thing as above), -CON-几3- (However, I'L, , R
3 represents the above and the rotating one. ) etc., -CO
2-CH2CH2-, -CO2-CH2CH2CH2-
.

-CONHCH2-, -CONHCH2CH2-.

-coNHcI-12cH2cH2- and the like are particularly preferred.

D is a tertiary amine, such as a petro ring containing two or more atoms, such as an imidazole ring (for example, an imidazole ring is particularly preferred).

Vinyl monomer unit +B in general formula (I) of the present invention
Specifically, + is preferably represented by general formula (III).

General formula (1u) 1 +CH2-C-square 5 [In the formula, R1, L and n represent the same as in general formula (It).几41 Rs + Rs each represent the same or different alkyl group having 7 to 72 carbon atoms, or an aralkyl group having 7 to λO carbon atoms,
R4, R6, and R6 may be interconnected to form a cyclic structure together with nine atoms.

X○ represents a monovalent anion. n is O or l. ] R1, L represent the same thing as in general formula (II), and Rt is particularly preferably a hydrogen atom or a methyl group -CU2CH
2C) 42CtL2-, -CONHCH2-.

-CONHCH2CHz-, -CONHCH2CH2C
H2- is particularly preferred.

R4, R51R6 are each the same or different 7-72
an alkyl group having 5 carbon atoms (e.g., unsubstituted alkyl group, methyl group, ethyl group, n-propyl group, n-butyl group, n-amyl group, n-hexyl group, n-octyl group, λ-ethylhexyl group) group, n-nonyl a, n-decyl group, n-dodecyl group, etc. Substituted alkyl group, methoxyethyl group, 3-cyanopropyl group, ethoxycarbonylethyl group, acetoxyethyl group, λ-butenyl group, etc.)
, or ij7~. Aralkyl group having 20 carbon atoms (e.g., unsubstituted aralkyl group, benzyl group, phenethyl group, diphenylmethyl group, naphthylmethyl group, etc.) Substituted aralkyl group, ≠-methylbenzyl group, ≠-inpropylbenzyl group, ≠ -Methoxybenzyl group, Hiro-(
termethoxyphenyl)benzyl group, 3-chlorobenzyl group, etc. ) etc.

R4, 几5. An example in which R6 is connected to each other to form a cyclic structure with the desired atom is when ■ also forms a cyclic structure with 4゜5 (for example, ⇠6 is the same as the one shown above). same], ji], etc.)
Alternatively, from R4, Rs, and R61C, the cyclic Xe represents an anion, such as a halogen ion (for example, a chloride ion, a bromide ion, an iodine ion), an alkyl buffate ion (
(e.g. methyl sulfate ion, ethyl sulfate ion), alkyl or aryl sulfonate ion (e.g. methanesulfonic acid, methanesulfonic acid, benzenesulfonic acid, p
-toluenesulfonic acid), acetate ions, and sulfate ions, with chloride ions and p-toluenesulfonic acid ions being particularly preferred.

+B+ may contain two or more of the above vinyl monomer units.

Vinyl monomer unit +C in general formula (I) of the present invention
+ represents a vinyl monomer unit having neither a tertiary nor a ≠-class nitrogen atom, and among these, uncharged units are preferred.

Preferred examples of vinyl monomer unit ÷ C+ include ethylene, propylene, l-propylene, isophene,
Styrene, α-methylstyrene, vinyltoluene, monoethylenically unsaturated esters of aliphatic acids (e.g. vinyl acetate, allyl acetate, etc.), monoethylenically unsaturated amides of aliphatic acids (e.g. N-vinylacetamide, N-vinyl pyrrolidone, etc.), esters of ethylenically undistributed monocarboxylic or dicarboxylic acids (e.g. methyl methacrylate, ethyl acrylate-1-, n-butyl acrylate, n-butyl methacrylate, benzyl acrylate, diethyl maleate, ethyl itaconate, etc.), ethylenically unsaturated monocarboxylic acid amides (e.g. acrylamide, dimethylacrylamide, methacrylamide, diacetone acrylamide, acryloylmorpholine, etc.), monoethylenically unsaturated compounds (e.g. acrylonitrile), or dienes (e.g. acrylonitrile); For example, butadiene, imprene, etc.), among which styrene, ethylenically unsaturated carboxylic acid esters, ethylenically unsaturated carboxylic acid amides, etc. are particularly preferred.

In addition, when a polymer having one seven-unit unit represented by the general formula (1) is used as a cross-linked latex, the vinyl monomer unit ÷ C+ has neither a tertiary amine nor a quaternary ammonia l. Vinyl monomer units having λ or more unsaturated bonds in one molecule that can be combined can be used. Preferred specific examples of the vinyl monomer unit include divinylbenzene, ethylene glycol dimethacrylate, propylene glycol dimethacrylate, methylene bisacrylamide, ethylene glycol diacrylate, etc. Among them, divinylbenzene, ethylene glycol dimethacrylate, ethylene glycol dimethacrylate, etc. Acrylate is preferred for poetry.

+C+ may contain two or more of the above vinyl monomer units.

where
, 4A0 molar ratio, 2 is O to 90 molar ratio, preferably O to Hiro θ molar ratio.

Specific examples of preferred polymers represented by general formula (I) of the present invention are shown below.

P-2 p 3 CHa te P-Hiro CHaP- "-6CHa CH3 j CH3 A2-CH+□0 ONH2 The molecular weight of the polymer having the monomer unit represented by the general formula 1) of the present invention as a constituent component is determined by photographic properties, coating From the point of view of suitability, etc., it is preferable that the score is 10,000 or more. In addition, when this polymer is used as a solution, from the viewpoint of coating properties, the molecular weight is preferably /000,00θ or less, particularly 300,000 or less, but unsaturated polyesters that can be copolymerized as vinyl monomer units + C + When a vinyl monomer unit having one or more bonds in one molecule is used, the molecular weight of the polymer becomes infinite, and from the viewpoint of coating properties, it can be used as a dispersion.

The method for synthesizing the polymer used in the present invention is shown below.

Synthesis Example 1 Poly(N-vinylimidazole-co-N,N
Synthesis of , N-trimethyl-N-methacryloylaminopropylammonium p-toluenesulfona)) p/ In a J 00 mQ three-tube flask, N-vinylimidazole 3, AP% N, N, N-trimethyl-N-acryloyl Aminopropylammonium p-toluenesulfonate/yo, op, 1) M F j 0? , add 4tOt of ethanol, fully replace with nitrogen gas, to0c
Heated at K. When the temperature becomes constant, λ, −′−
Azobis (2, cage methylvaleronitrile) 0.2!
? was added and heating was continued for 5 hours. After all the reaction samples were cooled to room temperature, they were added to acetone in Step 31, and the precipitate precipitated was collected by filtration and dried under vacuum. , 09 white polymer was obtained.

Yield 74<% Synthesis Example 2. Synthesis of poly(N-vinyl-2-methylimidazole-N,N,N-1-dimethyl-N-methacryloyloxyethylammonium chloride) P-j 700 mQ reaction vessel KN-methyl! -Methylimidazole 2, 20? , N,N,N-trimethyl-hemethacryloyloxyethylammonium chloride (
Commercially available as QDM from Nitto Chemical ■)t,, 139%DM
After adding F'ψmQ and thoroughly degassing with nitrogen gas, to
oc, and added co,-'-azobis(J,!-dimethylvaleronitrile) O03732. Heating was continued for 2 hours, ethanol was added in bulk, and heating was continued for an additional 2 hours. After cooling the reaction sample to room temperature, it was added to 3 tons of acetone, and the precipitated precipitate was collected by filtration and vacuum dried at 23 degrees.
A white polymer No. 9 was obtained. Yield: 72.3cm Synthesis Example 3 Synthesis of P-, t) N-vinylimidazole 3, ty, N, N, N-
) riftyl-N-methacryloyloxyethylammonium chloride (commercially available as Q, DM from Nitto Kagaku ■) 10.4'? , DMFroy, ethanol≠Ori,
In addition, the atmosphere was sufficiently replaced with nitrogen gas, and the mixture was heated to 50°C. When the temperature becomes constant, ko, λ′-azobis(,2
゜≠-dimethylvaleronitrile) 0.2 to 9 was added, ≠
Heating was continued for 30 minutes. After cooling the reaction sample to room temperature,
31 in acetone, the precipitate that precipitated was collected by filtration, and dried under vacuum. 2♂! A white polymer of No. 2 was obtained. yield! 7% The binder in the mordant layer used in the present invention can be contained alone or in combination.

A hydrophilic binder can be used for this binder. Hydrophilic binders are typically transparent or translucent hydrophilic colloids.6. D, including natural substances such as proteins such as gelatin, gelatin derivatives, polyvinyl alcohol, and cellulose derivatives, polysaccharides such as starch and gum arabic, and synthetic polymeric substances such as water-soluble polyvinyl compounds such as polyvinylpyrrolidone and acrylamide polymers. .

Among these, gelatin and polyvinyl alcohol can be particularly effectively used. As the gelatin used for mordant 1-, various known gelatins are used. For example, lime-treated gelatin,
Is it a different method of manufacturing gelatin, such as acid-treated gelatin?
Alternatively, gelatin obtained by chemically modifying the obtained gelatin such as phthalation or sulfonylation can also be used. Further, if necessary, it can be used after being subjected to desalting treatment.

As the polyvinyl alcohol used for the mordant layer, various known polyvinyl alcohols are used.

Polyvinyl alcohols having various saponification degrees and polymerization degrees are used. The degree of saponification is preferably 7096 or higher, particularly preferably ROQB or higher. The degree of polymerization used is preferably 300-2000. Those having different saponification degrees and polymerization degrees can also be used in combination.

Further, as for the saponification method, there are two methods, acid saponification method and alkali saponification method, and materials subjected to either saponification treatment can be used in the present invention.

An example of a product that satisfies these conditions is PVA-1o! manufactured by Kuraray Co., Ltd. , PVA-12 Hiromu, PVA-C
8, PVA-HC (complete saponification), P
Examples include VA-xo3, PVA-axo, and L-t (all of which are partially saponified).

The mixing ratio of the polymer mordant and binder of the present invention and the coating amount of the polymer mordant can be easily determined by those skilled in the art depending on the amount of dye to be mordant, the type and composition of the polymer mordant, and the image forming process to be used. However, the mordant/gelatin ratio is 20/IO~f O/20
(weight ratio), the amount of mordant applied is 06.2~/j9/m
2 Preferably θ.

It is preferable to use it at 5 to It/m.

The mordant layer containing the mordant of the present invention can contain various surfactants in order to improve coating properties.

For example, saponins (steroids), alkylene oxide derivatives such as polyethylene glycol, polyethylene glycol/polypropylene glycol condensates, polyethylene glycol alkyl ethers or polyethylene glycol alkyl aryl ethers, polyethylene glycol esters, polyethylene glycol sorbitan esters, polyalkylene nonionic substances such as glycolalkylamines or amides, polyethylene oxide adducts of silicone), glycidol derivatives (e.g. alkynylsuccinic acid polyglycerides, alkylphenol polyglycerides), fatty acid esters of polyhydric alcohols, and alkyl esters of sugars. Surfactant: alkyl carboxylate, alkyl sulfonate,
Alkylbenzene sulfonates, alkylnaphthalene sulfonates, alkyl sulfates, alkyl phosphates, N-acyl-N-alkyl taurines, sulfosuccinates, sulfoalkylpolyoxyethylene alkylphenyl ethers, polyoxyethylene Anionic surfactants containing acidic groups such as carboxy groups, sulfo groups, phospho groups, sulfate ester groups, phosphate ester groups, etc., such as alkyl phosphates; amino acids, aminoalkyl sulfonic acids, aminoalkyl sulfates, or phosphoric acids Amphoteric surfactants such as esters, alkyl betaines, and amine oxides; alkylamine salts, aliphatic or aromatic quaternary ammonium salts, heterocyclic quaternary ammonium salts such as pyridinium and imidazolium, and aliphatic or aromatic quaternary ammonium salts; Cationic surfactants such as phosphonium or sulfonium salts containing heterocycles can be used.

Among the above-mentioned surfactants, it is preferable to include a polyethylene glycol type nonionic surfactant having a repeating unit of ethylene oxide in the molecule in the photosensitive material. Particularly preferred are those having 5 or more repeating units of ethylene oxide.

Nonionic surfactants that meet the above conditions are widely used outside the field, and their structures, properties, and synthesis methods are well known. Representative known documents include 5urf
actant 5science seriesvolu
me 1. Nonjonjc 5urfactant
s (Edited by Martin J, 5chi
ck.

Marcel Dekker Inc. / Plr 7
), 5surface Active Ethylen
e OxideAdduc4s(Schoufe!dt
, Pergamon Press/Rety) by N. sb, and the nonionic surfactants described in these documents that satisfy the above conditions are preferably used in the present invention.

These nonionic surfactants may be used alone or as a mixture of two or more.

The image-forming dyes to be mordanted in the mordant layer of the present invention include the following. That is, azo dyes, azomethine dyes, anthraquinone dyes, naphthoquinone dyes, styryl dyes, nitro dyes, quinoline dyes, carbonyl dyes, and phthalocyanine dyes having anionic groups such as phenolic hydroxyl groups, sulfonamide groups, sulfonic acid groups, and carboxyl groups.

The mordant layer of the present invention is used to fix a dye in a color image forming method in which a diffusible dye is formed in an image, then diffused, and then fixed.

The above-mentioned methods for forming color images include those that use a developing solution at a temperature around room temperature (for example, the method described in Belgian Patent No. 767, Riyo 2), and those that use heat development (for example, the method described in JP-A-Sho Jr. There are various forms such as Za!G3, Same! as described in 1722≠7), and the mordant layer of the present application can be used in any of them.

Photographic elements employing the mordant layer of the present invention are described in more detail below.

Photographic elements containing mordants of the present invention typically include 1) a support, 2)
It consists of a photosensitive element and 3) an image receiving element, and the phenomenon can be achieved by heating or developing a developer.

In either case, after applying a flash of light to the photographic element in an image-like manner,
The silver halide is developed, with a corresponding image formation of a diffuse dye which migrates to the image-receiving element.

The photographic elements described above can optionally contain further developing agents, auxiliary developing agents, and processing elements.

One of the preferred specific embodiments of the above embodiment is Berly 41 7!7. This is disclosed in No. 52. Another preferred embodiment in which the mordant of the present invention can be used is described in US Pat. ≠/j, t≠≠ issue, 31 Hiroshi/j, t
≠J issue, same 3. t/yo.

64Lt, 3.6g 7, Hiro♂7, and 3゜t3
J, No. 707, German Patent Application (OLS) Co.

412/y, Ritθ, etc.

Another preferred embodiment using the mordant of the present invention is disclosed in JP-A-5-R-ZE! 4t3, same! Particularly preferred is the embodiment in which the image is developed by heating as described in R-7 Octopus 4A7, Japanese Patent Application No. 77-J/7J, and J7-3.2j≠7.

Example 1゜ This article describes how to make a silver iodobromide emulsion.

Gelatin Hiro 09 and KBr26t in 3ooomp of water.

dissolve in Keep this solution in zooc and stir.

Next, a mixture of nitric acid steel 3≠2 dissolved in water is added to the above solution over a period of 70 minutes.

Thereafter, a solution of KI 3.3F dissolved in 100 mQ was added over 2 minutes.

The pH of the silver iodobromide emulsion thus prepared is adjusted, and excess salt is removed by sedimentation.

Thereafter, p I-1 was adjusted to t and o to obtain a silver iodobromide emulsion with a yield≠oog. : Next, we will discuss how to make a benzotriazole silver emulsion.

Gelatin 2r9 and benzotriazole 13.22 in water J
Dissolves in OOOm9. The solution is kept at 4LO°C and stirred. A solution prepared by dissolving 79 silver nitrate in 100% water is added to this solution over a period of 2 minutes.

The pH of the benzotriazole silver emulsion is adjusted and allowed to settle to remove excess salt. Thereafter, the pH was adjusted to 6°0 to obtain benzotriazole with a yield of 0.2.

Next, a method of preparing a gelatin dispersion of a dye-donating substance will be described.

Is it possible to use a cyan dye-donating substance with the following structure? , succinic acid-
, 2-Ether-hexyl ester sodium sulfonate 0.
! 9, t')-cresyl 7 osphate (TCP) 41
Weighed, added ethyl acetate A/J OmQ, and heated to about 60°.
Heat and dissolve in C to make a homogeneous solution. This solution and 10% dissolved lime-treated gelatin 1009 were stirred and mixed, and then dispersed using a homogenizer for 70 minutes at 10,000 liters PM.

This dispersion is called a dispersion of a dye-providing substance (cyan).

*Cyan dye-donating substance Next, we will discuss how to make a photosensitive coating.

The following materials were mixed and dissolved, and then coated on a polyethylene terephthalate film to a wet film thickness of 30 μm and dried.

(al benzotriazole silver emulsion iog (bl silver iodobromide emulsion 209 (C1 aqueous solution of the dispersion of the dye-providing substance (cyan) jml fe) 70% ethanol solution of guanidi/trichloroacetic acid /2.5ml (f ) 1oe4 aqueous solution of H2NS02N(CH3)2
11mL (Al water 7.!) Furthermore, on top of this, the following composition was applied as a protective layer to a film thickness of 23am.
I applied it and let it dry.

(h) Gelatin 10% aqueous solution 3!9 (il guanidine trichloroacetic acid solution in lO thiethanol jmQ (j) Amber ll!-, 2-ethyl hexyful ester sodium sulfonate/thi aqueous solution 1p (k) Water 16 m9 Next, we will discuss how to prepare the dye fixing material.

2 of the aqueous dispersion mordant HP-i loy having the following structure
Diluted with 00ml of distilled water, io% lime treated ring gelatin/
It was mixed uniformly with 009. This mixture was poured onto a paper support laminated with polyethylene in which titanium dioxide was dispersed and wetted (71!). It was applied evenly and thickly. This sample was dried and used as a dye fixing material (A) containing a mordant HP-/.

Instead of the above-mentioned mordant, use the above-mentioned mordant Pt.

By the same operation except using P-J and P-6,
Dye fixing materials (B), (C), and (D) were created.

HP-/H3 +CH2-C-Masu FI3 Using a tungsten bulb for the above photosensitive coating, -〇0
Imagewise exposure was performed for 7θ seconds at 0 lux. After that/JI17
It was heated evenly for 30 seconds on a Heat Glock heated to 0CK. Next, after supplying 1 m2 of water to each membrane side of the dye-fixing material, the photosensitive coating material that has been heat-treated and the dye identification material to which the water has been supplied are placed so that their membrane surfaces are in contact with each other. Superimposed on. After heating for 5 seconds on a Rooc heat block, the dye-fixing material was peeled off from the light-sensitive material, and a negative cyan image was obtained on the dye-fixing material. The density of these negative images was measured using a Macbeth reflectometer (RD, t/ri).

Next, on the film surface of the dye-fixing material that supports these negative layers,
A transparent film having an ultraviolet absorption layer was superimposed, and xenon light (10,000 lux) was irradiated onto the color image for 3 days using an Atlas C, I4j weatherometer. The color image density after xenon light irradiation was measured to evaluate the fastness of the color image to light.

Table 1 shows the maximum density and the dye residual rate at reflection degree/θ.

As shown in the table, it was found that the mordant of the present invention gives a high maximum density to cyan dyes and greatly improves the light fastness of brown images.

Example 2゜Operating and processing exactly the same as in Example 1 except that the cyan dye-providing substance in the dispersion of the dye-providing substance in the photosensitive coating of Example 1 was replaced with a dye-providing substance having the following structure. I did this. The results are shown in Table 2.

*Magenta dye-donating substance C4H, jt) As shown in the table, it has been demonstrated that the mordant of the present invention gives a high maximum yield rate even for magenta dyes and greatly improves the fastness of brown images.

Example 3゜Operations and treatments are exactly the same as in Example 1 except that the cyan e-donor substance in the dispersion of the dye-donor substance in the photosensitive coating of Example 1 is replaced with a dye-donor substance having the following structure. I did this. The results are shown in Table 3.

*Yellow dye-donating substance CH (tl 9) As shown in the table, it has been demonstrated that the mordant of the present invention provides a high maximum density even for yellow dyes and greatly improves the light fastness of color images. .

From the above, the mordant of the present invention not only provides a dye image with high transfer density even in a color image forming method in which development is caused by heating, but also stably maintains the dye image and prevents chemical changes and decomposition due to light. It has been revealed that it has an excellent feature of making it less susceptible to damage.

Example 4 A photosensitive sheet coated on a polyethylene terephthalate transparent support as follows: (1) The above mordant (HP-/, P-/).

P-J or P-j) Mordant layer containing J, Of 7 m2 and gelatin 3.097 m2.

(2) Titanium oxide 209/m” and gelatin
, 09/rn2.

(3) A light shielding layer containing carbon placo, J9/m2 and gelatin 1.197m2.

(4) The following cyan dye image donor 0.969/m2 and λ,! -di-t-butylhydroquinone 0.03f/
m2/, 697 m2 of N,N-diethyl laurylamide and 1. ! 2/H12 full-containing layer.

Red spectrally sensitized silver iodobromide internal latent image type direct reversal emulsion containing C4H9(tl (5) /・ri9/m2) (JP-A-Sho! 2-3
≠ Emulsion of Example No. 26), 0, 04' 097 m
Red-sensitive emulsion layer containing 3-(2-formylethyl)-comethyl-benzothiazolium bromide and ≠97 m2 of gelatin.

(6) 3.397 m2 of gelatin, 0.0309/
m2 of sodium bisulfite, dissolved in both 2/m2 of tricresyl phosphate and 0.7797 m2 of dibutyl phthalate.

2 of +22/m2. An intermediate layer comprising j-di-t-octylhydroquinone.

(7) /, 6117m2 of gelatin, O0♂ri9/m
A magenta dye image donor having the following structure of 2 and 0.03
09/m2 of J,j-di-t-butylhydroquinone were both dissolved/,! A layer containing 97 m2 of N,N-diethyl diurylamide.

Magenta dye image donor: (8) Green spectrally sensitized color silver bromide internal latent image type direct reversal emulsion containing silver of /, H2/m2 (Japanese Patent Application No. 10-7
Emulsion of No. 2223 Example 1), 0, 0/09/
m2 of 3-(2-formylethyl)-1-methyl-benzothiazolium bromide and / , Of /
A green-sensitive emulsion layer containing m2 of gelatin.

(9) j, 7 f 7 m2 of gelatin, 0, (
II), 2 Jf//m2 of sodium bisulfite, O8
ri≠g/m2, 21! An interlayer containing -di-t-octylhydroquinone dissolved/, -tf/m2 of tricresyl phosphate (solvent) and 0, A/97m2 of digtyl 7-thaleate (solvent).

(10) 2, P 97m2 of gelatin, the following yellow dye image donor/, jf/m2 and co,! -G1
- A layer containing co-j9/m'' N,N-diethyl laurylamide in which both butylhydroquinone O and Oaλf/m2 are dissolved.

Yellow dye image donor: C4Hg(tl (11) evening-sensitive internal #image type silver iodobromide direct reversal emulsion containing 2.227 m2 of silver (emulsion of JP-A-12-J+J7 Example 1), 0.0 A blue-sensitive emulsion layer containing /'If/m2 of j-(+2-formylethyl)-1-methyl-benzothiazolium bromide and /'If/m2 of gelatin.

(12) Gelatin protective layer of 0, rij9/m2. Polyethylene terephthalate V-) The following processing solution was developed between the cover sheet coated on a transparent support as follows and the photosensitive sheet, and the results shown in Table 1 were obtained. (
Fastness to light was evaluated in the same manner as in Example 1.

) Cover sheet: polyacrylic acid (viscosity approximately 1000 cp in a 10 wt% aqueous solution)/19,1 m2 as a neutralized acidic polymer layer on a polyethylene terephthalate support and acetyl cellulose (100 ml of acetyl cellulose) as a neutralized timing layer thereon. 3.227 m2 of gold hydrolyzed to produce acetic acid of Hiroshi 9) and poly(styrene-maleic anhydride) (composition ratio, styrene:maleic anhydride = approx. 6)
0=4tO1 molecular weight approx! 10,000) 0.297m2 was applied.

As shown in the table, it has been found that the mordant of the present invention greatly improves the light fastness of color images even in the form of a diffusion transfer type color light-sensitive material using a dye solution at a temperature around room temperature.

Claims (1)

Claims: A photographic element having at least one layer containing a polymer having as a constituent a monomer unit represented by the following general formula (I). General Formula (1) %Formula % [The tertiary amine in the formula represents a vinyl monomer unit having a heterocycle containing 1-2 or more nitrogen atoms. B represents a vinyl monomer unit with a quaternary ammonium salt. C represents a vinyl monomer unit having neither a tertiary amine nor a quaternary ammonium salt. X is koishiri t
molar ratio, y is λ, ji' r molar ratio, 2 is O to 20 molar ratio 6; ]