Abstract: Photographic elements, film units, processes and alkaline processing compositions are described wherein certain 4-hydroxyalkyl-substituted 3-pyrazolidinones are employed as electron transfer agents in black-and-white and color image transfer materials. The silver halide electron transfer agents or precursors thereof have the following formula: ##STR1## wherein: n is 1 or 2;R represents hydrogen or a hydrolyzable moiety;R.sup.1 represents an alkyl or substituted alkyl group of 1 to about 6 carbon atoms, an aryl or substituted aryl group of 6 to about 10 carbon atoms, or an aralkyl group of 6 to about 10 carbon atoms;R.sup.2 and R.sup.3 each independently represents hydrogen, an alkyl or substituted alkyl group of 1 to about 6 carbon atoms, an aryl or substituted aryl group of 6 to about 10 carbon atoms, or an aralkyl group of 6 to about 10 carbon atoms; andR.sup.4 represents hydrogen or one or more alkyl or alkoxy groups having from 1 to about 4 carbon atoms, methylenedioxy groups or ethylenedioxy groups.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety comprising a 1,3-sulfur-nitrogen group that undergoes cleavage in the presence of silver ion and/or soluble silver complex, which moiety maintains said precursor in its colorless form at least until the 1,3-sulfur-nitrogen group undergoes cleavage imagewise to correspond to the imagewise distribution of silver ion and/or soluble silver complex made available as a function of development.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety comprising a 1,3-sulfur-nitrogen group, said 1,3-sulfur-nitrogen group (a) being capable of undergoing cleavage in the presence of silver ion and/or soluble silver complex, and (b) possessing an amide substituent on the carbon atom in the 2-position that undergoes an intramolecularly accelerated cleavage reaction following the cleavage of said 1,3-sulfur-nitrogen group, which moiety maintains said precursor in its colorless form at least until the 1,3-sulfur-nitrogen group undergoes said cleavage. In a further embodiment, the cleavage of the amide substituent following the cleavage of the 1,3-sulfur-nitrogen group is used to provide an imagewise distribution of a photographically useful reagent, which reagent may be, for example, a photographically active reagent.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety containing a thiazolidinyl group, said thiazolidinyl group (a) being capable of undergoing cleavage imagewise in the presence of an imagewise distribution of silver ion and/or soluble silver complex and (b) possessing a substituent on the carbon atom in the 2-position that undergoes a .beta.-elimination reaction upon said imagewise cleavage, which moiety maintains the precursor in its colorless form at least until said thiazolidinyl group undergoes said cleavage. In a further embodiment, an imagewise distribution of a photographically useful reagent, which reagent may be, for example, a photographically active reagent, is released as a carbamic acid by a .beta.-elimination reaction following the cleavage of a thiazolidinyl group whereby said reagent is provided with a solubilizing group at least during the initial stages of processing.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety containing a thiazolidinyl group, said thiazolidinyl group (a) being capable of undergoing cleavage imagewise in the presence of an imagewise distribution of silver ion and/or soluble silver complex and (b) possessing a substituent on the carbon atom in the 2-position which upon cleavage of said thiazolidinyl group, undergoes a .beta.-elimination reaction followed by an intramolecularly accelerated nucleophilic displacement reaction, which moiety maintains the precursor in its colorless form at least until said thiazolidinyl group undergoes said cleavage. In a further embodiment, this sequence of reactions is used to release an imagewise distribution of a photographically useful reagent which reagent may be, for example, a photographically active reagent.

Abstract: A diffusion transfer heat-developable color photographic material. The material comprises a support, a photosensitive silver halide, an organic silver salt, a hydrophobic binder, a dye releasing activator, and a dye releasing redox compound which releases a diffusible dye. Color images are obtained with the material by transferring a dye released by heat development. The material makes it possible to obtain clear color images by a simple procedure and the images obtained are stable over a long period of time.

Abstract: Photographic elements, film units, processes and alkaline processing compositions are described wherein certain 4-hydroxyalkyl-substituted 3-pyrazolidinones are employed as electron transfer agents in black-and-white and color image transfer materials. The silver halide electron transfer agents or precursors thereof have the following formula: ##STR1## wherein: n is 0, 1 or 2;R represents hydrogen or a hydrolyzable moiety;R.sup.1 and R.sup.2 each independently represents hydrogen, an alkyl or substituted alkyl group of 1 to about 6 carbon atoms, an aryl or substituted aryl group of 6 to about 10 carbon atoms, or an aralkyl group of 6 to about 10 carbon atoms, with the proviso that when n is 0, then either R.sup.1 or R.sup.2, but not both, may be hydrogen; andR.sup.3 represents at least one alkyl or alkoxy group having from 1 to about 6 carbon atoms, methylenedioxy group or ethylenedioxy group.

Abstract: A novel silver halide photographic element which contains a nondiffusible complex capable of releasing a diffusible, photographically useful material is disclosed.Said nondiffusible complex becomes active for ligand exchange upon reduction under alkalin conditions to release a diffusible, photographically useful material, said complex being represented by the following formula: ##STR1## wherein La is a quadridentate ligand group; Lb is a didentate ligand group; BALL is a ballast group; PHOTO is a photographically useful material group; Y is a counter ion; and r is the number of counter ions necessary for neutralizing the electric charge on the CO(III) complex.

Abstract: The present invention relates to compounds of the type comprising a ballasting group which renders said compounds substantially fast to diffusion in hydrophilic colloid media and at least one photographically useful group which is chemically linked to said ballasting group, and to photographic elements containing at least one compound of the type referred to.The ballasting groups in the compounds according to the present invention are derived from mono- or di-esters or -ethers of glycerol. The linkage between ballasting group and photographically useful group can be realized via acid chlorides which are derived from the above-said glycerol derivatives.

Abstract: Color photographic images are produced by decomposing hydrogen peroxide on nuclei present in imagewise distribution and bleaching out a dye by the hydrogen peroxide on those parts of the image where no such nuclei are present.

Abstract: A photographic silver halide material comprising a compound which is capable of being reduced by a silver halide developing agent at a rate slower than that of image-wise developable silver halide and in reduced state is capable of releasing a photographically useful group, characterized in that said compound corresponds to the following formula: ##STR1## wherein: R.sup.10 and R.sup.20 (same or different)(1) represent an alkyl group, a cycloalkyl group, an alkenyl group, a cycloalkenyl group or an aralkyl group including said groups in substituted form,(2) represent an aryl group including a substituted aryl group, or(3) represent a heterocyclic ring residue including such residue in substituted form, orR.sup.10 and R.sup.20 are ringclosed, either R.sup.10 or R.sup.20 containing a ballasting group conferring diffusion resistance to the compound in hydrophilic colloid media when penetrated by an aqueous alkaline liquid;L.sup.1 and L.sup.2 (same or different) represent a ##STR2## --SO.sub.

Abstract: Polymers having excellent adherence to film supports such as cellulose acetate are disclosed. The polymers comprise random recurring units having the structure--A).sub.w, --B).sub.x, --C).sub.y and --D).sub.zwherein;A represents polymerized vinyl acetate;B represents a polymerized acrylate or methacrylate monomer capable of copolymerization with vinyl acetate;C represents a polymerized monomer selected from the group consisting of methacrylic acid, itaconic acid and vinylbenzoic acid;D represents a polymerized cationically charged copolymerizable monomer;w represents from 20 to 85 weight percent;x represents from 5 to 65 weight percent;y represents from 5 to 50 weight percent and;z represents from 0 to 15 weight percent.

Abstract: Useful scavengers for oxidized developing agents in photographic elements are 2,4-disulfonamidophenols, or alkali labile precursors of such phenols.

Abstract: The new compounds of the general formula ##STR1## where R.sub.1 is hydrogen, alkyl or cyclic alkyl, R.sub.2 and R.sub.3 are each hydrogen, alkyl, a carboxylic acid, ester or amide group or cyano, and R.sub.4, R.sub.5 and R.sub.6 are each alkyl or aryl, are useful as antihalation dyes and as image dyes in photographic materials for dye-bleaching processes.

Abstract: Sulfilimine compounds of formula I ##STR1## wherein X is the integrating residue of a photographically active compound H.sub.2 N--A--X andA is a linking member between X and N consisting of a benzene ring having at least two electron-attracting groupsare suitable compounds for photographic recording materials. The compounds can be split reductively to release the photographically active compound. Where the photographically active compound is a dye or dye precursor the sulfilimine compounds are suitable dye releasers for color diffusion transfer processes.

Abstract: A color photographic light-sensitive material is disclosed. The material is comprised of a support having thereon a layer containing at least one kind of dye releasing 2-acylamino-1-naphthol derivative represented by the following general formula (I):R--L--D (I)wherein R represents a reducing group represented by the following general formula (II): ##STR1## wherein the substituents R.sub.1 -R.sub.8 are defined within the application; L represents a connecting group between R and D wherein specific examples of L are defined in the specification; and D represents a dye or a precursor of a dye. The dye releasing 2-acylamino-1-naphthol derivative of the present invention has a high dye releasing efficiency when it is oxidized. The derivative of the invention can release a dye having a good diffusibility and can provide a high dye transfer density and thus it is suitable to use as a coloring material in a color photographic light-sensitive material of diffusion transfer type.

Abstract: Compounds corresponding to the formula: ##STR1## wherein Z represents a radical which completes a condensed aromatic ring system;R.sup.1 represents an n-valent aliphatic or aromatic radical;R.sup.2 represents H, alkyl or aryl,R.sup.3 represents one or more radicals to control the diffusion properties and the activation pH;andn represents 1 or 2,are suitable ED precursor compounds for use in color-photographic recording materials. They are preferably used in a combination with reducible dye-releasers. They are also suitable as so-called scavengers.

Abstract: A direct positive type light sensitive silver halide photographic material is disclosed. At least one layer containing an unfogged internal latent image type silver halide emulsion, is provided on a support, and an internal latent image type silver halide emulsion having fog centers in silver halide grains, is incorporated in said layer or in another constituent layer of the photographic material. A dye image forming substance may be incorporated in the same layer or in a separate layer to form a color diffusion transfer type light sensitive photograhic material. The photographic materials present a positive image having a high maximum density and a low minimum density.

Abstract: There is disclosed a silver halide photographic light-sensitive material which comprises a support, a combination of an unfogged surface latent image type silver halide photographic emulsion and a material which is non-diffusible under alkali conditions and which is capable of releasing a diffusible development inhibitor or a precursor thereof as a result of cross oxidation with an oxidized product of a photographic developing agent; and a combination of an internal latent image type silver halide photographic emulsion whose silver halide grains contain therein, prior to development, fog nuclei and a dye image-forming material which is initially non-diffusible under alkaline conditions but which is capable of releasing a diffusible dye or a precursor thereof as a result of being oxidized by the oxidized product of said photographic developing agent.

Abstract: A heat-developable color photographic material is disclosed. The material is comprised of a support having thereon a layer containing fine droplets of complex coacervate containing a light-sensitive silver halide, an organic silver salt oxidizing agent and a color image forming substance which are prepared by complex coacervation and hardened with a hardening agent. Color fog does not occur with the material and it can be easily prepared to provide a color image having good color balance by imagewise exposure to light and a heat development procedure. A process for forming a color image using the heat-developable color photographic material is also disclosed.

Abstract: A photographic element containing a nondiffusible metal complex capable of releasing a diffusible photographically useful group. The complex contains at least one poly-dentate ligand which contains the photographically useful group. The complex may be activated when reduced under alkaline conditions to release the photographically useful group.

Abstract: A silver halide photographic light-sensitive material which comprises at least one of those pyrazole compounds represented by the following general formula: ##STR1## wherein A is a group which can be eliminated in a photographic process condition; X is ##STR2## wherein R.sub.5 is a hydrogen atom or an alkyl, an aryl, an acyl or a sulfone group, which R.sub.5 group may combine together with R.sub.1 to form a condensed ring; R.sub.1 is a hydrogen atom or an alkyl, an aryl, an acyl, a sulfone, an alkoxy, or a heterocyclic residue; R.sub.2 is a hydrogen atom or an alkyl, an aryl, an alkoxy, an amino, an acid amide, a sulfonamide, a carboxyl, an alkoxycarbonyl, a carbamoyl, a cyano, or a halogenated alkyl group, R.sub.3 and R.sub.

Abstract: Compounds corresponding to the formula: ##STR1## wherein R.sup.1 represents an aromatic group, andR.sup.2 represents H, alkyl, alkenyl, aryl or acyl, are suitable ED precursor compounds for use in color photographic recording materials. They are preferably used in combination with reducible dye releasers. They are also suitable as so-called scavengers.

Abstract: A nucleating agent composition is described comprising a triazole substituted phenylhydrazide and an thiourea substituted phenylhydrazide wherein the molar ratio of the triazole substituted phenylhydrazide to the thiourea substituted phenylhydrazide is between 1:20 and 20:1. The described composition is useful in photographic emulsions, processing compositions and elements and provides excellent nucleation at low concentrations under a variety of processing conditions.

Abstract: .alpha.-Ketoimidomethyl blocked photographic reagents are useful in photographic elements, film units and processes. The blocked photographic reagents have the structure: ##STR1## wherein J represents ##STR2## X represents the atoms to complete a 5- or 6-membered ring or ring system; R represents alkyl of 1 to 30 carbon atoms or aryl of 6 to 30 carbon atoms; andPR represents the residue of an organic photographic reagent containing a heteroatom through which it is joined to the blocking group.

Abstract: A silver halide photographic material containing a coupler capable of releasing a photographically useful group in a controllable timing.

Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a nondiffusible, redox, dye-releasing compound comprising a ballasted, sulfonamidophenol or sulfonamidonaphthol compound having a dye moiety attached thereto through the sulfonamido group of the compound, the sulfonamido group being located in a position which is conjugated with respect to the position of the hydroxy group of the compound, and wherein(a) the compound has at least one substituent thereon in a position which is conjugated with respect to the position of the sulfonamido group, the substituent being selected from the group consisting of hydroxy, sulfonamido, phosphonamido and carbonamido, and(b) the compound not having a hydroxy, alkoxy, aryloxy, sulfonamido, phosphonamido or carbonamido group thereon in a position which is conjugated with respect to the position of the hydroxy group of the compound,with the proviso that when the compound is a 2-sulfonamidophenol and has only one substituent thereon in

Abstract: A process for the production of a photographic color image by the silver dye bleach process, using a photographic material which comprises, on a base, at least one light-sensitive silver halide emulsion layer, which can contain a diffusion-resistant bleachable image dye, and immediately above this layer, on the side facing the light source, a silver halide-free layer containing a diffusion-resistant, bleachable image dye.The process gives very sharp photographic color images.

Abstract: Curve shape control, especially for lower scale contrast, of a photographic element is achieved by employing with the silver halide emulsion layer two nondiffusible redox dye-releasing compounds of different relative reactivities, the reactivity of the compound which is more reactive being at least 1.5 times the reactivity of the compound which is less reactive. Preferred compounds are ballasted sulfonamido compounds, each of which has a color-providing moiety attached thereto through a sulfonamido group which is alkali-cleavable upon oxidation. Preferred more reactive sulfonamido compounds have a N,N-disubstituted carbamoyl ballast group. The color-providing moieties can be (1) transferred imagewise to an image-receiving layer to provide a useful image, or (2) can be merely diffused out of the element to provide a retained image therein which can be treated to form a color transparency or a motion picture film.

Abstract: Diffusion transfer photographic color processes and products are described utilizing novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 --R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The image dye providing material includes a diffusion control moiety such as a hydroquinonyl group or a precursor thereof and may be diffusible or nondiffusible as a function of the diffusion control moiety.

Abstract: A photographic dye diffusion transfer process is provided which operates by imagwise release of a dye.The dye diffuses to a receiving layer and is mordanted there to give a dye image. The dyes are released from a compound of the formula D--E--F--BAL by reductive cleavage.D is a group which contains the residue of diffusible dye, BAL is a ballasting group which renders the compound containing it substantive to the layer in which it is present, D and E being joined by any type of chemical bond and E and F represent a single or double bond system which links D and BAL and which has a reduction potential above -200 mV measured against a standard hydrogen electrode at a pH of less than 3 and which bond can be reductively cleaved at a pH of less than 3 by a reducing agent which is able to act as a pH below 3.

Abstract: Novel non-diffusing reducible compounds of formula I which under alkaline development conditions release a diffusible photographically useful compound are of use in color diffusion transfer processes. ##STR1## R.sup.0 completes a ring system; E represents a reducible group;W reduces the electron density in the position of E so that E is reducible under photographic development conditions;GR.sup.1 represents a group from which photographically useful compound R.sup.1 is released;XR.sup.2 represents a group that by reduction of E is activated to cooperate with GR.sup.1 in an intramolecular reaction with release of R.sup.1.

Abstract: Negative color images are produced by the silver dye bleach process, by exposure of a photographic silver dye bleach material, silver developing, dye bleaching, silver bleaching and fixing, the silver bleaching being optionally carried out simultaneously with the dye bleaching and/or the fixing, in a single treatment bath.

Abstract: A direct positive silver halide photographic light-sensitive material is described comprising a support having coated thereon at least one light-sensitive silver halide photographic emulsion layer, wherein at least one layer of the light-sensitive silver halide photographic emulsion layers and other hydrophilic colloid layers contains a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 can each represent a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group; R.sup.3 represents a hydrogen atom or an aliphatic group; R.sup.4 represents a hydrogen atom, an aliphatic group, or an aromatic group; and X represents a divalent aromatic group.

Abstract: A photothermographic emulsion can be provided with enhanced image density by using an indoaniline leuco dye, aromatic carboxylic acid, and p-alkylphenyl sulfonic acid in reactive association with the emulsion.

Abstract: A photographic material for diffusion transfer photography containing a quinonoid compound, which is capable in reduced state and under alkaline conditions of releasing a photographically useful group and corresponds to one of the following general formulae: ##STR1## wherein: each of (Nuox).sup.1 and (Nuox).sup.2 (same or different) represents an oxidized nucleophilic group,Z represents a bivalent atom or bivalent atomic group, which is electro-negative,Q together with the group Z represents a releasable photographically useful group,Y.sup.1 and Y.sup.2 together represent the necessary atoms to close a p-quinonoid ring substituted with (a) directly linked monovalent organic ring or ring system substituent(s) having aromatic character,Y.sup.3 represents the necessary atoms to close a o-quinonoid ring substituted with (a) directly linked monovalent organic ring or ring system substituent(s) having aromatic character, andeach of R.sup.1 and R.sup.

Abstract: This invention relates to amino hydroxy cyclohexenones of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each are alkyl, usually containing 1 to 20 carbon atoms.In another embodiment, the present invention is directed to the use of the above-denoted compounds as photographic silver halide developing agents and to photographic processes, products and compositions employing the same.

Abstract: In the process for preparing impregnated polymer latex compositions by impregnating a hydrophobic substance in dispersed polymer particles in an aqueous polymer latex, the improvement comprises impregnating said hydrophobic substance, wherein the impregnation is effected by mixing said hydrophobic substance which is solid state, a water-miscible organic solvent and aqueous polymer latex wherein a polymer of the polymer latex is prepared from ethene monomers and containing at least one hydrophilic group.

Abstract: Production of masked positive color images by the silver dye bleach process, by exposure of a photographic material for the silver dye bleach process, silver developing, dye bleaching, silver bleaching and fixing, optionally the silver bleaching is carried out simultaneously with the dye bleaching and/or the fixing, in a single processing bath.

Abstract: A color photographic silver halide light-sensitive material is described comprising a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.3 can each represent an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group, R.sup.2 can represent an unsubstituted or substituted alkyl group, R.sup.4 and R.sup.5 can each represent a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryloxy group, an unsubstituted or substituted alkylthio group, an unsubstituted or substituted arylthio group, a halogen atom, or an acylamino group, and R.sup.1 and R.sup.2, R.sup.1 and R.sup.4, or R.sup.2 and R.sup.5 together can represent atoms forming a condensed ring structure together with the benzene ring of formula (I), provided that the total of carbon atom numbers in R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is at least 16.

Abstract: Imidomethyl blocked photographic image dyes and dye releasing compounds are useful in photographic elements, film units and processes. The blocked photographic dyes and dye releasing compounds have the structures: ##STR1## wherein: J represents ##STR2## X represents the atoms to complete at least one 5- or 6-membered ring; R represents hydrogen, alkyl of 1 to 4 carbon atoms or aryl of 6 to 12 carbon atoms;Q represents ##STR3## --Q--DYE represents the residue of a diffusible photographic dye; and CAR is a ballasted carrier moiety from which the dye moiety is released as a function of silver halide development.

Abstract: Electron donor compounds of the formula I are effective to reduce non-diffusing reducible color providing compounds which when reduced release under the photographic development conditions a diffusible dye.R.sup.1 (--L.sup.1 .dbd.L.sup.2).sub.n --NH--SO.sub.2 --X (I)in whichL.sup.1, L.sup.2 represent methine groups which may be part of a carbocyclic or heterocyclic ringR.sup.1 represents --OR.sup.2, --SR.sup.2 or --NHR.sup.3R.sup.2 represents H or a hydrolysable groupR.sup.3 represents H, alkyl, aryl, acyl including a group that together with L.sup.1 completes a ringn=1 or 2X represents a non-colored organic group.

Abstract: Photographically useful compounds such as photographic reagents and photographic dyes are blocked with a grouping which, under alkaline conditions, is cleaved from the compound by an intramolecular nucleophilic displacement reaction. The compounds are resistant to unblocking under storage conditions, but are uniformly unblocked under conditions encountered during photographic processing.

Abstract: A photographic element containing a compound represented by formula (I) ##STR1## wherein G represents --OR.sup.1 or --NHR.sup.2, R.sup.1 represents hydrogen or a hydrolyzable moiety, R.sup.2 represents hydrogen or an alkyl group containing from 1 to 50 carbon atoms, Z represents a photographically useful group, A represents an atomic group forming an aromatic ring, Ball represents an organic immobilizing group on the aromatic ring, which cntains from 8 to 50 carbon atoms, m represents an integer of 1 or 2, X represents a divalent organic group, Nu represents a nucleophilic group, and n represents an integer of 1 or 2, and X with the nucleophilic group Nu is capable of forming a 5- to 12-membered ring by oxidation having an electrophilic center at the carbon atom substituted by the --NHSO.sub.2 Z group.

Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ redox dye-releasing materials and a zinc salt, such as zinc oxide, in such a form, location and concentration that it will be diffusible in the element during processing, and the dye which is released from the redox dye-releasing material during processing will have an increased stability to light exposure. The zinc salts may be incorporated in the photosensitive portion of a photosensitive element, a processing composition or a cover sheet.

Abstract: A process for the production of a photographic image which comprises(a) imagewise exposing a photographic assembly which comprises at least during a silver halide developing step, in order optionally a supercoat layer, at least one silver halide emulsion layer, a layer containing a layer substantive hydroxypyridone azamethine compound of the general formula ##STR1## wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl, amino or heterocyclic radical, Y represents hydrogen or hydroxy, --CN, --COOR.sup.1, --CONR.sup.1 R.sup.2 or --COR.sup.1 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical and Z is hydrogen or is --CN, --COOR.sup.3, --CONR.sup.3 R.sup.4, --SO.sub.3 H, --SO.sub.3.sup.- or --COR.sup.3, where R.sup.1, R.sup.2, R.sup.3 and R.sup.

Abstract: There are described novel compounds which are represented by the formula ##STR1## wherein R is ##STR2## A is sulfur or selenium; X represents the nonmetallic atoms necessary to form a nucleus which completes a five or six membered heterocyclic moiety; R.sub.1 is H or lower alkyl; R.sub.2 is H or a hydrolyzable group; and R.sub.3 is H, alkyl or a hydrolyzable group. The compounds are useful in photographic applications and provide controlled release of a photographically useful material during processing of photographic elements with an aqueous alkaline processing composition.

Abstract: A color photographic sensitive material containing a polymer comprising at least 1 mol % of a repeating unit represented by formula (I) ##STR1## wherein A represents a divalent group, n is 1 or 2, R.sub.1 represents hydrogen, a halogen atom or an alkyl group, and R.sub.2, R.sub.3, and R.sub.4 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an amino group, an acylamino group, or a sulfonamide group, and R.sub.3 and R.sub.4 together can form an aromatic ring, provided that the total of carbon atoms of R.sub.2, R.sub.3, and R.sub.4 is 60 or less.

Abstract: Novel nitrobenzyl compounds are incorporated into a photographic emulsion or developer for controlled release of development/image modifier compounds. This occurs imagewise only after developer oxidation products have been formed in the course of the development process. For example, nitrobenzyl-masked phenylmercaptotetrazole (PMT), incorporated into a silver halide emulsion, reacts with developer oxidation products via an electron transfer mechanism to release the potent development restrainer PMT.

Abstract: A dye image stabilization process for color photographic sensitive elements which comprises processing a color photographic sensitive element containing at least one dye image stabilizer precursor with a solution containing divalent ions of at least one metal selected from Cu, Co, Ni, Pd and Pt is disclosed. Light fastness of dye images is thus improved.