Abstract: A silver halide light-sensitive material is described, comprising a support having provided thereon at least two silver halide emulsion layers differing in color sensitivity, wherein at least one of said layers contains at least one compound capable of releasing a fogging agent, a development accelerator, or a precursor thereof in proportion to the amount of silver developed, and a layer containing silver halide grains which are not substantially developed by the development processing of said material is provided between said two emulsion layers differing in color sensitivity. The material has improved color reproducibility.

Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, the color photographic light-sensitive material containing a compound capable of releasing a group represented by the general formula (I) described below upon the reaction with the oxidation product of a developing agent: ##STR1## wherein W represents an oxygen atom, a sulfur atom or a group ##STR2## (wherein R represents a hydrogen atom or an organic residue); X represents an electron withdrawing substituent; Y represents a hydrogen atom or a substituent; PUG represents a photographically useful group or a precursor thereof; X and Y each represents a divalent group and may be connected to each other to form a cyclic structure; and when W represents the group ##STR3## and R represents an organic residue, R and X or R and Y each represents a divalent group and may be connected to each other to form a cyclic structure.

Abstract: A heat-developable light-sensitive material is described which is capable of providing images of high density and low fog in a short period of time, and which is excellent in stability. The heat-developable light-sensitive material comprises a support and formed thereon a heat developable light-sensitive layer, wherein said light-sensitive material contains at least one compound selected from the group consisting of compounds represented by formulae (I), (II), (III) and (IV) as a base precursor ##STR1## wherein symbols represent the same groups as defined in claim 1.

Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having positioned thereon a light-sensitive silver halide emulsion layer, a light-insensitive layer and ultraviolet ray absorbing polymer latex of a polymer having a repeating unit derived from a monomer represented by the general formula (I): ##STR1## within general formula (I) the substituents are defined within the specification. The Q represents an ultraviolet ray absorbing group represented by a general formula (II) or (III): ##STR2## The substituents within the general formulae given above are defined in the specification. By including the particular ultraviolet ray absorbing polymer latex of the invention the resulting photographic material has improved antistatic properties and the photographic characteristics of the material are not deteriorated by the presence of the latex.

Abstract: A heat-developable color photographic light-sensitive material comprises a support having thereon at least one layer containing the novel base precursor. This heat-developable color photographic light-sensitive material provides a high maximum density and low fog by heat-developing at a relatively low temperature and for a short period of time.

Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer and a compound represented by the following general formula (I): ##STR1## wherein COUP represents a coupler residue capable of being subjected to a coupling reaction with an oxidation product of an aromatic primary amine developing agent; TIME represents a timing group which is released upon the coupling reaction and subsequently releases ##STR2## Z represents a monocyclic or condensed heterocyclic ring consisting of a nitrogen atom and a carbon atom; L represents a divalent linking group; R.sup.1 represents a hydrogen atom or an alkoxycarbonyl group; R.sup.2 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an acyl group, a sulfonyl group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a thioacyl group or a thiocarbamoyl group; R.sup.3 represents a hydrogen atom; R.sup.2 and R.sup.

Abstract: A heat developable color photographic material is disclosed. The color photographic material is comprised of a support having thereon a light-sensitive mixed crystal silver haloiodide having a silver iodide content of 4 to 40 mole %, a binder and a dye-providing substance capable of providing a mobile dye, when the silver haloiodide is reduced to silver by heating, in chemical relation to the reaction. The color photographic material is capable of producing an image by quick development in a substantially water free state. Even when the color photographic material is used in combination with an organic silver salt it is capable of providing excellent color sensitivity.

Abstract: Photographic elements and assemblages are described which employ nondiffusible N',N'-diaromatic carbocyclic--or diaromatic heterocyclic--sulfonohydrazide compounds which are capable of releasing photographically useful groups in an imagewise manner as a function of silver halide development.

Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, the color photographic light-sensitive material containing a coupler which releases a compound after the coupling reaction with the oxidation product of a developing agent, the released compound being capable of releasing further a photographically useful group by an oxidation-reduction reaction with the oxidation product of another developing agent. The compound used in the present invention is chemically stable and can release a photographically useful group under control; therefore the silver halide color photographic light-sensitive material containing the compound has good stability during storage and high sensitivity and provides a color image having good image qualities such as sharpness, graininess, color reproducibility, etc.

Abstract: A silver halide photographic light-sensitive material is described, comprising a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a blocked photographic agent represented by formula (I) ##STR1## wherein A represents a photographically useful agent moiety, which may have a timing group; X.sup.1 and X.sup.2 each represents a carbonyl group, a sulfonyl group, or a sulfinyl group; Z represents an atomic group forming a 5-membered, 6-membered, or 7-membered ring; R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, an alkoxy group, an acyl group, a sulfonyl group, or a heterocyclic group; R.sup.3 represents an alkyl group, an alkenyl group, a cycloalkyl group, a heterocyclic group, an aryl group, or an aralkyl group; m represents 0, 1, or 2; n represents 0 or 1; and the total of m+n is 1, 2, or 3.

Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer and containing, in a silver halide emulsion layer having an average iodide content of about 8 mol % or more, a compound capable of releasing a fogging agent or a precursor thereof, or of releasing a development accelerator or a precursor thereof upon development in proportion to the amount of developed silver.

Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having provided thereon a hydrophilic colloid layer and a silver halide emulsion layer. The silver halide emulsion layer contains tubular silver halide grains having a diameter at least 3 times their thickness and also contains a compound represented by general formula (I) or (II): ##STR1## the substituents are defined within the specification. The material obtains the advantages of utilizing tabular silver halide grains while having a reduced dependents of its photographic properties on development processing conditions which normally effect materials containing tabular silver halide grains.

Abstract: A silver halide emulsion rich in chloride is described which has grains having a layered grain structure with a core and at least one layer encasing the core.

Abstract: A silver halide color photographic material is described, comprising a support having thereon at least a cyan-color-forming red-sensitive emulsion layer, a magenta-color-forming green-sensitive emulsion layer, and a yellow-color-forming blue-sensitive emulsion layer; the weight-averaged wavelength (.lambda.) on the spectral sensitivity distribution determined by equi-energy spectrum of said red-sensitive emulsion layer being less than 640 nm; the longest wavelength in the wavelengths having the sensitivity of 1/2 of the maximum value of the above-described equi-energy spectrum being in a range of from 30 nm to 55 nm longer than the weight-averaged wavelength and the minimum wavelength thereof being in a range of from 30 nm to 55 nm shorter than the weight-averaged wavelength; in the above-described equi-energy spectrum, values A and B defined below satisfying the relation of A/B.gtoreq.0.

Abstract: Benzoxazole derivatives represented by general formula (I) which are intermediates for synthesis of o-sulfonamidophenol derivatives useful as dye releasing redox compounds in a color diffusion transfer color image forming process: ##STR1## wherein R.sup.1 and R.sup.2, which may be the same as or different from each other, each represents an alkyl group or an aryl group or they may combine and form a ring; R.sup.3 represents a hydrogen atom, an alkyl group or an aryl group; R.sup.4 represents an alkyl group or an aryl group; R.sup.5 represents an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom or an acylamino group, or --CR.sup.1 R.sup.2 R.sup.3 and R.sup.5 may combine and form the nucleus ##STR2## which is condensed at the 6- and the 7-positions of the benzoxazole nucleus; and n is 0, 1 or 2.

Abstract: A heat-developable color light-sensitive material comprising a support having thereon at least: (1) a light-sensitive silver-halide, (2) a coupler capable of coupling with an oxidation product of a developing agent, (3) a hydrophilic binder, and (4) at least one compound represented by the following general formula (Z): ##STR1## the substituents A, R.sub.1, R.sub.2 R.sub.3, R.sub.4, X and R.sub.5 are defined herein.The heat-developable color light-sensitive material containing the developing agent or the precursor thereof represented by the general formula (Z) which is excellent in stability during storage, silver developing property and coupling property has good preservability and can provide color images having a high S/N ratio and a high image density.

Abstract: A silver halide color photographic light-sensitive material is disclosed, comprising a support having thereon at least one silver halide emulsion layer, wherein at least one silver halide emulsion layer contains a coupler which is subjected to a coupling reaction with an oxidation product of a color developing agent to produce a diffusible coupling product which exerts a fogging effect in a developing solution; the silver halide color photographic light-sensitive material provides increased contrast and sensitivity, development is accelerated, and stability during storage is improved.

Abstract: A process of obtaining highly stable color masking dyes comprises use of an element which has a support having thereon at least one silver halide emulsion layer having associated therewith an essentially colorless, immobile, ligand-releasing compound of the structure LIG-X. In this structure, X is a group which, as a function of silver halide development, is cleaved from LIG, and LIG is a ligand capable of complexing with metal ions while joined to X to form a color masking dye. A color masking dye is formed by developing the imagewise exposed areas of the described element with a developing agent to cleave LIG from X and washing substantially all of the cleaved LIG moieties in those areas out of the element, and treating the element with metal ions to form a masking dye complex with LIG-X in unexposed areas.

Abstract: A process of obtaining highly stable color images comprises use of an element which has a support having thereon at least one silver halide emulsion layer having associated therewith an essentially colorless, immobile, ligand-releasing compound of the structure LIG-X. In this structure, LIG is a ligand which is capable of complexing with metal ions (e.g. ferrous ions) to form a metal complex dye, and X is a group which, as a function of silver halide development, is cleaved from LIG. A color image is formed by developing the described element after imagewise exposure with a developing agent to imagewise cleave the bond between the LIG and X, and treating the developed element with metal ions (e.g. ferrous ions) to form a metal complex dye image.

Abstract: A silver halide photographic light-sensitive material is described which comprises a support having thereon a light-sensitive silver halide emulsion layer, wherein the photographic light-sensitive material therein contains a blocked photographic agent capable of releasing a photographically useful agent and the blocked photographic agent has a carbonyl group or thiocarbonyl group to which a hydrogen atom or a carbon atom is directly bonded and is substituted with a photographically useful group which is capable of being released upon an intramolecular nucleophilic attack by the oxygen atom in the carbonyl group or the sulfur atom in the thiocarbonyl group.The precursor of photographic agent is completely stable during storage prior to use of the photographic light-sensitive material, and releases a photographic agent at a desired time upon the processing of the photographic light-sensitive material. The precursor also exhibits its function to a substantial degree in a relatively low pH range.

Abstract: The bleaching from photographic elements of silver produced by the development of silver halide having a dye adsorbed to its surface by employing as a bleaching agent a ferric complex of a polycarboxylic acid is improved by the presence of a compound of the formula: ##STR1## wherein Ar is an aromatic linking group,R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are hydroxy substituted lower alkyl groups,R.sup.5 and R.sup.6 are lower alkanediyl groups,X is a charge balancing counter ion,x and y are 0 or 1, andz is 0, 1, or 2.

Abstract: Precursor compounds from which photographically-active compounds are released with a time delay correspond to the following general formula ##STR1## wherein A represents the residue of a compound which undergoes oxidative coupling;X represents --O--, --S-- or --NR.sup.1 --;Y represents a releasable group which may consist of or contain the residue of a photographically-active compound; andR represents a group for controlling the kinetics of release.Advantageous pictorial properties (inter-image effect, edge effect, modulation transfer function) are obtained with compounds according to the present invention if the photographically-active residue is the residue of a development inhibitor.

Abstract: A color photographic element contains a compound of the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent hydrogen atom, or an alkyl or aryl group; Ar.sub.1 and Ar.sub.2 each represent an aryl group; and n and m each represent 1 or 2. The color element containing the above compound displays excellent sensitivity, gradation, and color-developability even when developing it with a color developer not substantially containing any benzyl alcohol.

Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least two light-sensitive silver halide emulsion layers which are sensitive to light of substantially the same spectral region and a relatively light-insensitive layer containing silver halide, zinc oxide or titanium oxide positioned between the two light-sensitive silver halide emulsion layers and at least one of the two light-sensitive silver halide emulsion layers containing a compound represented by the following general formula (I):A--B (I)wherein A represents a residue of a compound capable of coupling with the oxidation product of an aromatic primary amine developing agent by removal of a hydrogen atom from the active position of the compound, and B represents a group which is released on coupling and exhibits a fogging function in a developing solution.

Abstract: A silver halide photographic light-sensitive material is disclosed. The material has improved sensitivity and granularity as well as an increased gradient. Further, the material can be processed by rapid processing methods. The material is comprised of a support having positioned thereon a light-sensitive silver halide emulsion layer and a compound represented by the general formula (I):A-B (I)wherein A is residue of a compound capable of undergoing a coupling reaction with an oxidized primary amine developer, the residue being derived by eliminating a hydrogen atom from an active position of the compound. B is a group capable of being released through a coupling reaction to exert a fogging effect.

Abstract: A heat-developable color photographic material is disclosed. The material is comprised of a support having thereon a layer containing at least a photographic silver halide and the photographic material containing an organic silver salt oxidizing agent, a reducing agent, a[hydrophobic]binder and a dye releasing compound which releases a diffusible dye upon heat development. The material is characterized by a support capable of receiving a released dye or a support having thereon a layer composed of an organic high molecular weight compound which is capable of receiving a released dye. The heat-developable color photographic material can easily provide a clear and stable color image 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: There are described novel photographic products and processes which utilize compounds which release a photographic reagent in the presence of alkali. The compounds include an imidazole blocking group and cleave in alkali to release the photographic reagent. Also described are novel compounds.

Abstract: A silver halide color reversal photographic material comprising a backing layer containing both gelatin of an isoelectric point of 5.5 or more and a cationic polymer is disclosed. By utilizing the particular backing layer the color reversal photographic material has increased retouchability.

Abstract: Surface-sensitized silver halide grains having a core/shell structure show improved properties.

Abstract: Process for the preparation of a photographic material comprising in at least one layer photographic useful compounds, e.g. color couplers or developers, which are occluded into solid polymer particles of 0.1 to 0.5 .mu.m in size.

Abstract: There is disclosed a light-sensitive silver halide photographic material comprising at least one hydrophilic colloid layer containing at least one compound represented by the following general formula [I]: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 have the same meanings as defined in the specification.The light-sensitive silver halide photographic material according to this invention has excellent bacteriocidal properties and does not adversely affect photographic performance.

Abstract: A heat-developable color photographic material is disclosed. The material is comprised of a support having thereon a layer containing at least a light-sensitive silver halide, an organic silver salt oxidizing agent, a hydrophilic binder, a reducing agent for the silver halide and/or the organic silver salt oxidizing agent and a dye releasing compound which is capable of bonding to an oxidized product of the reducing agent and releasing a hydrophilic dye. The heat-developable color photographic material can easily provide a clear and stable color image by imagewise exposure to light and a heat development procedure. A method of forming a color image using the heat-developable color photographic material is also disclosed.

Abstract: A color photographic silver halide light-sensitive material is described, containing at least one member of the compounds represented by the general formula (I-a) and (I-b) in at least one layer thereof: ##STR1## (wherein all the symbols are defined in the appended claims). This color light-sensitive material can be subjected to rapid photographic processing; i.e., the compounds of the general formula (I-a) and (I-b) act as bleach accelerators, making it possible to perform rapid photographic processing without exerting adverse influences on photographic characteristics.

Abstract: A photographic recording material for the production of color images to be viewed by reflected light contains, on a transparent support layer at least 60 .mu.m in thickness with smooth surfaces, a plurality of silver halide emulsion layers with differing spectral sensitivities and color couplers associated therewith and a light reflective opaque layer of binder. The material is developed chromogenically from the coated side. Exposure and viewing are carried out through the transparent support layer.

Abstract: Silver halide grains with high sensitivity are provided with iodobromide grains having at least 12% nominal iodide molar content, the grains including at least three different iodobromide phases having different iodide contents, the most external phase having an iodide content lower than the nominal iodide content.

Abstract: A diffusion transfer heat-developable color photographic material comprising a support having thereon a layer containing at least a light-sensitive silver halide, and the photographic material containing an organic silver salt oxidizing agent, a reducing agent, a hydrophobic binder and a dye releasing coupler which releases a diffusible dye upon heat development. The diffusion transfer heat-developable color photographic material can provide a stable color image by imagewise exposure to light and heat development procedure. A method of forming a color image using the diffusion transfer heat-developable color photographic material is also disclosed.

Abstract: A silver halide photographic light-sensitive material containing a diffusion resistant coupler, a light-sensitive silver halide and at least one compound represented by the following general formula (I) in the same layer or different layers on a support. ##STR1## Wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms, or R.sub.1 and R.sub.2 may be bonded to each other to form a heterocyclic ring together with the nitrogen atom; R.sub.3, R.sub.4, R.sub.5 and R.sub.6, which may be the same or different, each represents a hydrogen atom, a halogen atom, a hydroxy group, an amino group, an alkoxy group, an acylamido group, a sulfonamido group, an alkylsulfonamido group or an alkyl group, or R.sub.1 and R.sub.6 or R.sub.2 and R.sub.3 may be bonded to each other to form a 5-membered or 6-membered ring; X represents HPF.sub.6 or HBF.sub.4 ; and n represents an integer from 1 to 3.

Abstract: There is disclosed a process for producing a silver halide emulsion comprising sulfur sensitizing a silver halide emulsion for photography containing a chloride rich silver halide comprising 80 mole % or more of silver chloride under the conditions of pAg and/or temperature during the sulfur sensitization which are constituted of at least two different steps with lapse of time.According to this invention, there is provided a silver halide emulsion which can give a good image without any change, can exhibit advantages of silver chloride, and is improved in the drawbacks of high fog and poor shelf-stability of silver chloride.

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: A silver halide photographic light-sensitive material having improved antistatic properties is disclosed. The material is comprised of a support having thereon a light-senstive silver halide emulsion layer and a light-insensitive layer. The material includes (A) a flourine containing cationic surface active agent and (B) an ultraviolet ray absorbing polymer latex which comprises a polymer or a copolymer having a repeating unit derived from a monomer represented by the following general formula (I): ##STR1## within the formula (I) the Q is an ultraviolet ray absorbing group represented by the following general formula (II) or (III): ##STR2## the substituents within the formulae shown are defined within the specification. The ultraviolet ray absorbing polymer latex is present in the material in an amount in the range of 10 to 2,000 mg/m.sup.2 of the material.

Abstract: A silver halide color photographic light-sensitive material comprises a support having thereon a light-sensitive silver halide emulsion layer and a light-insensitive layer is disclosed. The material contains within the light-sensitive layer or the light-insensitive layer a compound capable of reacting with and fixing formaldehyde gas, said compound being represented by the general formula (I) or (II): ##STR1## The compound capable of reacting with and fixing formaldehyde gas is loaded into an ultraviolet ray absorbing polymer latex comprised of a polymer having a repeating unit derived from a monomer represented by the general formula (III): ##STR2## The substituents within the above formulae are defined within the specification.

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: 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: A silver halide color photographic material is disclosed. The material has improved developing characteristics which are obtained by containing both a substantially light-insensitive silver halide and at least one specific 3-pyrazolidone compound. The substantially light-insensitive silver halide includes a halogen composition consisting of 0 to 100 percent of bromide, 0 to 2 percent of iodine and the residual percent of chlorine, a mean grain size of 0.01 to 0.3.mu., and a coverage of 5 to 500 mg/m.sup.2. The 3-pyrazolidone compound has the following general formula (I): ##STR1## wherein X represents a hydrogen atom or an acetyl group; R represents an aryl group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, an alkyl group or an aryl group, and they may be the same as or different from one another. The material can be developed at an increased speed and is not accompanied by undesirable photographic effects such as fogging.

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: 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 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: The invention relates to a color photographic light-sensitive material comprising a support and a hydrophilic colloid layer coated thereon, said layer comprising a non-diffusible coupler and a hydrophilic colloid layer having an aromatic primary amine developing agent and/or its precursor and a polymer layer coated thereon wherein said polymer is permeable to an alkaline processing liquid but less permeable to said aromatic primary amine developing agent and/or its precursor, and the diffusion rate of said aromatic primary amine developing agent and/or its precursor, when dissolved in the alkaline processing liquid, in the polymer layer is not greater than 5.times.10.sup.-8 cm.sup.2 /sec per second at room temperature.

Abstract: In a photothermographic silver halide material and process for preparing an enhanced silver image, an aminosulfonylhydrazone that is capable of developing an image in the photothermographic material and that is capable, upon oxidation, of releasing an aminosulfinic acid, which, in turn, thermally releases ammonia or amine provides a silver image in the photothermographic material and provides ammonia or amine for activation of an ammonia or amine responsive imaging material. After imagewise exposure of the photothermographic material, a silver image enhanced by an image in the ammonia or amine responsive imaging material is produced by heating the photothermographic material.

Abstract: A two-equivalent cyan dye forming coupler represented by the general formula (I) substituted with at least one substituent represented by general formula (II), having substituents as defined in the specification. This coupler has excellent color forming properties and good dispersibility as well as good color hue and excellent fastness to heat and light. The color photographic material containing the two-equivalent cyan dye forming couplers does not exhibit a decrease in color density of cyan color images even when it is processed with a bleaching solution which has a weak oxidation power or a bleaching solution which is exhausted.