Abstract: Disclosed is a silver halide photographic material comprising a support, having thereon at least one silver halide emulsion layer, wherein there is contained in the silver halide emulsion layer or other hydrophilic colloid layer a compound of which an oxidized form is produced in accordance with development of the silver halide and is capable of releasing a photographically useful group by means of a conjugated addition-elimination mechanism due to an intramolecular nucleophilic group attack.

Abstract: Color photographic materials comprise a support bearing a silver halide emulsion and a coupler composition. The coupler composition comprises a two-equivalent pyrazolone magenta dye-forming coupler, a ballasted carbonamide compound, and a ballasted aniline or amine compound.

Abstract: Couplers corresponding to formula I below used in multilayer color photographic recording materials are suitable for the release of photographically active compounds. ##STR1## In formula I above, A represents the residue of a coupler which, as a consequence of a reaction with the oxidation product of a silver halide developer under the photographic development conditions, releases a radical corresponding to the following formula ##STR2## Time represents a bond which, on reaction of the coupler with the oxidation product of a silver halide developer, is released together with the triazole ring attached thereto and, in turn, releases the triazole ring with delay under the development conditions;n=0, 1 or 2;R.sup.1 and R.sup.2 represent any substituents, provided the compound of formula II ##STR3## as a whole is a photographically active compound after release.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide photographic material contains at least one compound represented by formula (I): ##STR1## wherein ED represents a group capable of releasing (Time).sub.t -Ind upon a reaction with an oxidation product of a developing agent; Time represents a divalent linking group; t represents 0 to 1; and Ind represents a group represented by formula (II): ##STR2## wherein X represents a monovalent group; and s represents an integer of from 0 to 4.The compound represented by formula (I) is excellent in preservability and rapidly releases a development inhibitor.The silver halide photographic material provides an ultrahigh contrast image using a highly stable developing solution and is particularly suitable for use in photomechanical processes.

Abstract: A silver halide photographic material which comprises a support having provided thereon at least one light-sensitive emulsion layer, and which contains in said emulsion layer, or at least one other layer, at least one hydrazine derivative, at least one contrast enhancing agent and at least one redox compound capable of releasing a development inhibitor upon being oxidized. The hydrazine derivative is exemplified by compounds represented by the following formula: ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; and A.sub.1 and A.sub.2 both represent a hydrogen atom, or, alternatively, one of them represents a hydrogen atom and the other represents an alkylsulfonyl group, an arylsulfonyl group, or an acyl group.

Abstract: A silver halide color light-sensitive material containing a coupler represented by formula (I): ##STR1## wherein R.sub.1 represents a substituted or unsubstituted alkyl group; R.sub.2 and R.sub.3, same or different, each represent a group capable of substituting a benzene ring; Y represents a halogen atom, an alkoxy group, an alkoxycarbonyl group, a substituted or unsubstituted alkyl group, an alkylthio group, an aryloxy group, an alkylsulfonyl group, an arylthio group, or a carbamoyl group; X represents an organic residue necessary to form a substituted or unsubstituted 5- or 6-membered nitrogen-containing heterocyclic ring together with the nitrogen atom; l represents 0 or an integer of from 1 to 5; and m represents 0 or an integer of from 1 to 4.The coupler of formula (I) is excellent in dye image stability.

Abstract: Disclosed is a silver halide photographic material comprising a support having thereon at least one layer containing a compound represented by general formula (I): ##STR1## wherein EAG represents an electron-accepting group; A represents a group which undergoes a reaction triggered by the cleavage of the oxygen-nitrogen single bond in the general formula to release PUG; B represents a hydrogen atom or an alkyl group, an aralkyl group, an aryl group, a heterocylic group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxysulfonyl group or an aryloxysulfonyl group which may contain substituents; the solid lines indicate a single bond; the broken lines indicate that either of these line is a bond, with the proviso that when the broken line between N and A represents a bond, B is not present; EAG and B, and A and B may be connected to each other to form a ring; EAG may be connected to a polymer residue to fix the compound of general f

Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains at least one photographic agent represented by the following formula (I): ##STR1## wherein X represents a hydrogen atom or a group capable of forming a hydrogen atom upon hydrolysis; Time represents a divalent linking group; PUG represents a photographically useful group; V represents ##STR2## wherein R.sub.0 represents n alkoxy group or an aryloxy group, ##STR3## an iminomethylene group or ##STR4## R.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an alkoxy group, an aryloxy group, an amino group or --CHR.sub.2 --(Time).sub.m PUG; R.sub.2 represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; m represents 0 or 1; and n represents 0 or 1.

Abstract: A silver halide color photographic material having at least one silver halide emulsion layer on a support, said photographic material containing at least one coupler represented by the following general formula (I) in a constituent layer, ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl, alkoxy, alkylthio, alkylsulfonyl, alkoxycarbonyl, alkoxysulfonyl, aryl, aryloxy, arylthio, arylsulfonyl and aryloxycarbonyl group; R.sub.3 and R.sub.4, which may be the same or different, each represents a group by which benzene can be substituted; Z represents nonmetal atoms necessary to form a 5- to 7-membered single or condensed hetero ring together with the nitrogen atom; and m and n each represents an integer of from 0 to 4, and when they are each a plural number, a plural R.sub.3 or a plural R.sub.4 may be the same or different.

Abstract: A silver halide photographic material comprising a support having thereon at least one sensitive silver halide emulsion layer, wherein said emulsion layer comprises a monodisperse emulsion and said emulsion layer or other hydrophilic colloid layer contains at least one hydrazine derivative and at least one redox compound capable of releasing a development inhibitor when oxidized.

Abstract: The present invention relates to a silver halide color photographic material, which contains a novel yellow coupler of formula (I) in at least one hydrophilic colloid layer which is provided on a support, ##STR1## where R.sup.1 represents a non-metallic atomic group necessary for forming a 5-membered unsaturated hetero ring together with a residue of ##STR2## in the formula; R.sup.2 represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group; R.sup.

Abstract: Light sensitive color photographic silver halide material containing at least one light sensitive silver halide layer with which a conventional diffusion fast color coupler is associated and optionally other layers, both light sensitive and light insensitive, in which material the one or more than one light sensitive silver halide layer contains, at a concentration of 10.sup.-3 to 10 mmol/mol of silver halide, a compound corresponding to the following formulaA(Z).sub.n K (I)absorbed on and adhering to the silver halide grain and reacting with the developer oxidation product (EOP) with an effective reaction rate constant of K.sub.eff .gtoreq.10.sup.3, in which formulaA is a grain active bonding group,Z denotes a divalent intermediate membern is 0 or 1 andK denotes a group which forms a colored or uncolored reaction product in the reaction with the developer oxidation product,is found to have an improved sensitivity/graininess ratio.

Abstract: There is disclosed a light-sensitive silver halide photographic material, having two or more light-sensitive silver halide emulsion layers different in color sensitivities on a support, at least one of the light-sensitive silver halide emulsion layer comprises monodispersed silver halide grains containing 8 to 30 mole % of silver halide in core or contains twinned crystal silver halide grains, at least two of the light-sensitive silver halide emulsion layers different in color sensitivities containing a DIR compound capable of releasing a developing inhibitor or developing inhibitor precursor through the reaction with the oxidized product of a developing agent, the developing inhibitor or developing inhibitor precursor released from the DIR compound being diffusive, wherein the following conditions A:DIR compounds are added and incorporated in the emulsion layers so that the developing inhibitor released from the DIR compound incorporated in one color-sensitive silver halide emulsion layer and the developing

Abstract: A chitosan or chitin compound having a photographically useful residue. There is also disclosed a method for processing a silver halide photographic material which comprises processing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer in the presence of said chitosan or chitin compound represented by the following general formula (I) ##STR1## wherein the substituents are defined in the instant specification.

Abstract: A method for processing a silver halide color photographic material is described, comprising a support having thereon at least one of a light-sensitive silver halide emulsion layer and an adjacent layer thereof containing, at least one compound represented by the formula (V), wherein said silver halide color photographic material is subjected to a color-developing-process with a color developing solution which a replenisher is replenished in an amount of 700 ml or less per m.sup.2 of the silver halide color photographic material: ##STR1## wherein A represents a coupler residue; R.sub.11 represents a divalent aliphatic group having from 1 to 4 carbon atoms; and R.sub.12 and R.sub.13 each represents an aliphatic group having from 1 to 4 carbon atoms.According to the method of processing a silver halide color photographic material, processing performance does not change in spite of the reduced replenishing amount of color developing solution.

Abstract: A photographic naphtholic coupler comprising a ballast free naphtholic coupler moiety containing a --CONH.sub.2 group in the 2- position and a ballasted coupling-off group in the 4- position enables good wash out of dye formed upon oxidative coupling from a photographic material during processing of such a photographic material. Such a naphtholic coupler is useful in photographic silver halide materials and processes.

Abstract: A silver halide photographic material which provides a negative image contains a compound represented by formula (I): ##STR1## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; Z represents a development inhibitor group containing an anionic functional group as a partial structure; "Time" represents a divalent group; and n is 0 or 1.

Abstract: A silver halide photographic material which contains (a) at least one redox compound capable of releasing a development inhibitor by oxidation and (b) at least one compound represented by the following general formula (I): ##STR1## wherein R.sub.1 represents an aliphatic group, an aromatic group, or a heterocyclyl group; L.sub.1 represents a divalent organic group; X.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclyl group; and Y.sub.1 represents --O--, --SO.sub.2 NH-- or ##STR2## where Y.sub.

Abstract: The compounds in a preferred form are represented by general formula (I): ##STR1## wherein A and A' are each a group which can be hydrolyzed by hydrogen or alkali; X, Y and Z are each hydrogen, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a thioalkyl group or an electron-withdrawing group; PUG is a group released by a reaction with a light-exposed silver halide and/or the oxidized product of the developing agent, Time is a timing group; Time.sub.t PUG is a group released as .crclbar.TimePUG first when the oxidation-reduction moiety causes a cross reaction during the development and becomes an oxidized product, and is bonded to the benzene nucleus via a sulfur atom, a nitrogen atom or a selenium atom; and t is 0 or 1.

Abstract: A photographic silver halide element comprises a combination of a first coupler that is capable of releasing a development inhibitor moiety during photographic processing that enhances development inhibition and a second coupler that enables release of a bleach accelerator group upon processing. The photographic silver halide element is useful in photographic imaging.

Abstract: A silver halide color photographic material is described, comprising a support having disposed thereon at least one layer each of blue sensitive silver halide emulsion, green sensitive silver halide emulsion and red sensitive silver halide emulsion layer units, wherein at least one of (a) a compound which upon reaction with an oxidized developing agent forms a compound which on oxidation forms a development inhibitor or a precursor thereof and (b) a compound which upon reaction with an oxidized developing agent forms a precursor of a compound which on oxidation forms a development inhibitor or a precursor thereof, and (c) a compound which on reaction with an oxidized developing agent releases a development inhibitor or a precursor thereof are incorporated in the same color sensitive layer or in the same non-sensitive layer.

Abstract: A silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the light-sensitive silver halide emulsion layer contains at least one monodispersed emulsion having a particle size distribution such that a coefficient of variation with respect to a particle diameter of silver halide grains, S/r (wherein S represents a standard deviation regarding to a particle diameter and r represents an average particle diameter) is not more than about 0.25, and the silver halide color photographic material contains at least one primary compound capable of releasing, upon a reaction with an oxidation product of a developing agent, a secondary compound which is capable of further releasing a development inhibitor upon a reaction with another molecule of an oxidation product of a developing agent.The silver halide color photographic material is excellent in sharpnes, graininess and color reproducibility and has a broad exposure latitude.

Abstract: A silver halide photographic material composed of a support having thereon at least one silver halide photosensitive emulsion layer, at least one layer of the material containing a blocked photographic reagent precursor represented by formula (I): ##STR1## wherein X.sub.1 represents a divalent linking group containing a hetero atom bonded to the carbon atom, provided that X.sub.1 is linked to the carbon atom by a group other than ##STR2## PUG represents a photographically useful group containing a hetero atom bonded to X.sub.1 ; W represents .dbd.N-- or ##STR3## Y.sub.1 represents hydrogen or a group capable of being substituted; Z represents an atomic group necessary for forming a heterocyclic ring, provided that when W represents a ##STR4## the group adjacent to W in the heterocyclic ring is a group other than ##STR5## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.

Abstract: A high-speed color negative photographic material which comprises, a support having provided thereon, at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive emulsion layer, and is designated so as to acquire a specific photographic sensitivity (defined in detailed description of the invention) of 800 or above, and has a combined total of silver coverages ranging from 3.0 g/m.sup.2 to 9.0 g/m.sup.2 so as to minimize an increase in fog, a decrease in photographic speed and deterioration in granularity, which heretofore have occurred in high-speed photographic materials during long-range storage before used. In addition, the present photographic material enables enhancement of pressure resistance and processing efficiency.

Abstract: A silver halide color photographic material comprising at least one layer of, respectively, a blue-sensitive silver halide emulsion layer containing a yellow color coupler, a green-sensitive silver halide emulsion layer containing a magenta color coupler, and a red-sensitive silver halide emulsion layer containing a cyan color coupler, on a support; wherein a specific coupler is contained in at least one of the above-mentioned photosensitive silver halide emulsion layer, and wherein chemically sensitized silver halide grains are contained in at least one of the above-mentioned silver halide emulsion layers and are composed of grains with an interior core part consisting of a silver halide containing 10 to 40 mol % of silver iodide, wherein the core part is covered with a silver halide of a lower silver iodide content, and the surface of the grains, when analyzed by means of the XPS (X-Ray Photoelectron Spectroscopy) surface analysis method, consist of a silver halide containing greater than 5 mol % of silver

Abstract: A silver halide photographic material comprising a support having thereon a hydrophilic colloid layer which contains gelatin and wherein the hydrophilic colloid layer contains fine polymer particles which contains a redox compound which is capable of releasing a development inhibitor by oxidation, and a hydrazine compound, which is not the same as the redox compound, is contained in the hydrophilic colloid layer and/or in another hydrophilic colloid layer.

Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains a compound represented by the following general formula (I):A--(L).sub.l --B (I)wherein A represents a group whose bond to (L).sub.l --B is capable of being cleaved upon reaction with an oxidation product of a developing agent; L represents a group whose bond to B is capable of being cleaved after being cleaved from A; B represents a 5-membered, 6-membered or 7-membered nitrogen-containing unsaturated heterocyclic group which has 2 to 6 carbon atoms, which is connected to A-(L).sub.l at the nitrogen atom, and which has a sulfonamido group and a development inhibitor group or a precursor thereof on the ring carbon atoms; l represents an integer of 0 to 2, and when l represents 2, the two L's may be the same or different. The silver halide color photographic material has excellent sharpness and color reproducibility.

Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.

Abstract: A silver halide reversal photographic light-sensitive material is disclosed, which is improved in color reproducibility and gradation. The photographic material comprises a support having thereon a photographic component layers including at least two silver halide layers and a DIR layer. At least one of the emulsion layers comprises at least two silver halide emulsion layers which are substantially the same in color-sensitivity and different from each other in speed. The DIR layer contains a DIR compound and a silver halide emulsion and does not substantially contribute for any image formation.

Abstract: There is disclosed a light-sensitive photographic material which comprises a silver halide emulsion layer containing a first coupler dispersed in oil droplets, a second coupler dispersed in an alkali aqueous solution and a compound capable of releasing a diffusible development inhibiting substance or a precursor thereof.The specified combination of the first and the second couplers with the diffusible DIR coupler according to the present invention provide a good inter image effect whereby color images having excellent color balance are obtained.

Abstract: A silver halide color photographic material comprising a support having provided thereon a photographic layer containing:a) at least one compound capable of chemically binding with an aromatic amine developing agent or its oxidation product, which remains after color development processing, to produce a chemically inert and substantially colorless compound andb) at least one of the compounds presented by the following Formulae (I), (II) or (III): ##STR1## wherein X and X' each represents a divalent to hexavalent polyvalent group; n and m each represents an integer of 2 to 6; R represents an aliphatic group; R' represents an aliphatic group or an aromatic group, provided that R or R' existing in the same molecule may be the same or different from each other; R.sub.1, R.sub.2, R.sub.3 and R.sub.

Abstract: A photographic recording material is provided which has enhanced photographic properties, such as sharpness values without substantial decrease in photographic speed.

Abstract: Where DIR couplers corresponding to formula I are used in color photographic silver halide materials, good edge effects and interimage effects are obtained. ##STR1## In formula (I), A represents halogen, --OR, --SR, --CN, --COR, --CONHR, --COOR, --SO.sub.2 R, --SO.sub.2 NHR, ##STR2## R represents alkyl, aralkyl, aryl or hetaryl; Q represents a substituent for compelting a 5- or 6-membered heterocyclic ring;D and E, which may be the same or different, represent substituents attached to the C atom of the C.dbd.N group by a C, O, S or N atom, including those substituents which, together with the C atom of the C.dbd.N group, complete a carbocyclic or heterocyclic ring;Y represents a group having a silver halide development inhibiting function which is releasable during color development.

Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.

Abstract: Photographic compound (A) capable of releasing a photographically useful group is represented by the formula: SOL-CAR-LINK-PUG wherein SOL is a water-solubilizing group; CAR is a carrier moiety that, upon reaction with oxidized developing agent, is capable of releasing LINK-PUG and capable of forming a compound that is washed out of the photographic element during photographic processing; LINK-PUG is in turn capable of releasing a photographically useful group (PUG) during photographic processing and LINK-PUG is represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and PUG are as defined in the application. The photographic compound (A) enables formation of easily removable compounds in photographic elements and processes that provide images having improved acutance.

Abstract: A color photographic material with good photographic performance, such as sharpness, speed and granularity, contains a development inhibitor releasing compound having the structure: ##STR1## wherein: CAR is a carrier moiety;TIME is a timing group; andINH is a development inhibitor moiety,in association with a cyan dye-forming coupler having the structure: ##STR2## wherein: R.sup.1, R.sup.2, R.sup.3, Q, Z, Y, m, and n are as defined in the specification.

Abstract: High edge effects and interimage effects are obtained when DIR couplers of formula I are used in color photographic silver halide materials. ##STR1## In Formula I, R.sup.1 denotes alkyl, for example C.sub.4 H.sub.9 -t, aryl, for example p-alkoxyphenyl, NH-aryl or NH--NH--R.sup.3 ;R.sup.2 denotes H, halogen, e.g. chlorine, alkoxy, alkylthio or NH--R.sup.4 ;R.sup.3 and R.sup.4 denote acyl;X denotes the residue of a photographically active compound containing a monocyclic 1,2,3- or 1,2,4-triazole ring,TIME denotes a linking member andn denotes 0 or 1.

Abstract: Good edge effects and inter-image effects are obtained where DIR couplers corresponding to formula I are used in color photogrpahic silver halide materials. ##STR1## in which R.sup.1 is H, Cl, --CF.sub.3, alkoxy, sulfamoyl;R.sup.2 is H, Cl, alkyl, cycloalkyl, alkoxy, alkoxycarbonyl, carbamoyl;n is 0, 1 or 2;X is O or S;Y is a group with a silver halide development inhibiting function releasable during color development;Z is benzoyl, pivaloyl, carbamoyl or a quinazolin-4-on-2-yl group.

Abstract: Highly active silver halide development inhibitors are released from DIR couplers corresponding to formula I during color development. Where DIR couplers are used in color photographic silver halide materials, high edge effects and high inter-image effects are obtained.A--(TIME).sub.n --Z IIn formula I,A is the residue of a coupler which couples with the oxidation product of a silver halide developing agent under the conditions of photographic development and, in doing so, releases a group corresponding to the following formula--(TIME).sub.n --ZTIME is a binding link which together with the group Z (a triazole ring) attached thereto is releases on reaction of the coupler with the oxidation product of a silver halide developing agent and which, in turn, releases the group Z with delay under the development conditions;n is 0 or 1;Z is a triazole ring corresponding to one of the following formulae ##STR1## R.sup.1 is alkylthio; R.sup.

Abstract: Photographic compound (A) capable of releasing a development inhibitor group by means of a displacement reaction enables increased image acutance when the compound contains in a coupling position a coupling-off group represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and Q are as defined in the application. Such a compound (A) is useful in a photographic silver halide material and process.

Abstract: A novel blocked photographically useful compound comprises a new blocking group that (a) comprises two electrophilic groups, the least electrophilic of which is bonded directly or through a timing group to the photographically useful group (PUG) of the compound, (b) is capable of reacting with a dinucleophile reagent, and (c) has the two electrophilic groups separated from each other by a bond or unsubstituted or substituted atom that enables nucleophilic displacement to occur with release of PUG when the compound is reacted with a dinucleophile reagent. Such a blocked photographically useful compound is useful in a photographic material and process to provide increased stability and enable more rapid release of the photographically useful group upon reaction with a dinucleophile reagent.

Abstract: A photographic recording material is disclosed which contains a compound capable of releasing a development inhibitor moiety during photographic processing which enhances development inhibition and reduces interlayer interimage effects without adversely affecting photographic properties.

Abstract: Silver halide color photographic ligt-sensitive material which comprises a support having thereon at least one silver halide emulsion layer containing a diketomethylene yellow dye forming coupler having bonded, directly or through a connecting group, to the coupling active position a group which provides a compound having a development inhibiting property when the group is released from the coupler active position upon the color development reaction, wherein said group is a 4,7-dihalogen-2-benzotriazolyl group.

Abstract: A method for processing a silver halide color photographic light-sensitive material is disclosed, which comprises, after color development of an imagewise exposed silver halide color photographic material, processing the developed silver halide color photographic material with a processing solution having a bleaching ability, wherein the silver halide color photographic light-sensitive material contains at least one DIR coupler having at its coupling active position a group which forms a development inhibitor or precursor thereof when released from the coupling active position of the coupler upon a coupling reaction with an oxidation product of an aromatic primary amine color developing agent which is formed upon a color development reaction, and further decomposes into a compound having substantially no effect on photographic properties once discharged into a color developing solution wherein the half-life period of the development inhibitor or precursor thereof at pH 10.

Abstract: A novel silver halide light-sensitive material is provided, comprising a compound represented by the general formula (I): ##STR1## wherein EAG represents an aromatic group which receives electrons from a reducing substance; R.sup.1 represents hydrogen atom or a substituent; R.sup.2 represents an electrophilic group, with the proviso that R.sup.1 and R.sup.2 may be in the position of cis or trans to each other; R.sup.3 and R.sup.4 each represents hydrogen atom or a hydrocarbon group; ETG represents a group capable of transferring electrons; e represents an integer 0 or 1; Time represents a group which undergoes reaction triggered by the cleavage from the carbon carrying R.sup.3 and R.sup.4 to release PUG; t represents an integer 0 or 1; and PUG represents a photographically useful group.In a preferred embodiment, R.sup.1 represents an aromatic group, heterocyclic group or group represented by --Y.sup.1 --R.sup.5 in which Y.sup.1 represents a hetero atom or hetero atomic group and R.sup.

Abstract: A silver halide color photographic light-sensitive material is disclosed, comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer, wherein at least one red-sensitive silver halide emulsion layer and at least one green-sensitive silver halide emulsion layer each contains a precursor compound capable of releasing a compound upon reacting with an oxidation product of a developing agent, and said released compound is capable of releasing a development inhibitor upon further reacting with another molecule of the oxidation product of the developing agent. The material has improved sharpness and color reproducibility.

Abstract: A combination of a development inhibitor releasing coupler having a particular releasable mercaptotetrazole group with a particular alkoxy-benzoyl yellow dye-forming coupler as described in the specification in a photographic silver halide element and process enables improved dye images upon exposure and processing. This combination of couplers enables particularly improved dye images in a color photographic element and process comprising a particular phenolic cyan dye-forming coupler and a particular pyrazolo[3,2-c]-s-triazole magenta dye-forming coupler.

Abstract: A silver halide color photographic light-sensitive material is described, containing: (1) a non-diffusing coupler forming a dye on reacting with an oxidation product of a color developing agent, said dye having diffusibiity of the extent that it exhibits controlled smearing; and (2) a DIR compound releasing a diffusing development inhibitor or its precursor through a coupling reaction. This light-sensitive material is improved in both granularity and sharpness, and has high sensitivity.

Abstract: A novel photographic development inhibitor releasing coupler (A) comprises a coupler moiety bonded to at least one timing group that enables timing of release of a releasable development inhibitor moiety wherein the releasable development inhibitor moiety contains a --CH.sub.2 --Q group that is bonded directly to the inhibitor moiety and that is a group enabling, upon exposure and processing of a photographic element containing the coupler, reduced interlayer interimage effect without reduced image acutance. The coupler (A) is useful in a color photographic silver halide element and process.

Abstract: A silver halide color photographic material is disclosed comprising at least one silver halide emulsion layer on a support, wherein at least one type of development inhibitor releasing type coupler is present which, by means of a coupling reaction with the oxidized form of a primary aromatic amine developing agent, releases a precursor of a compound, the precursor inhibiting the development of silver halide which subsequently, by means of an electron transfer reaction via an ethylenic conjugated chain, releases a compound which inhibits the development of silver halide, and at least one type of bleach accelerating agent releasing type coupler is present which, by means of a coupling reaction with the oxidized form of primary aromatic amine developing agent, releases a bleach accelerating agent or a precursor thereof.