Abstract: Direct-positive photographic emulsions and elements which include internal-image silver halide grains, a nucleating amount of a hydrazine compound and a redox dye releaser are improved by the incorporation of a nucleation-promoting amount of a quinone oxidizing agent. Diffusion transfer images made from elements using these emulsions exhibit improved image discrimination and improved maximum density.

Abstract: Latexes suited for homogeneously incorporating compounds with a photographically useful group into photographic silver halide emulsion materials. The latex incorporates a copolymer comprising recurring units of a monomer with photographically useful group, and recurring units of surface active monomer, according to the general formula: ##STR1## wherein: R.sup.1 is hydrogen or methyl,n is 0 or 1 to 20,L is ##STR2## R.sup.2 is hydrogen or a hydrocarbon group, R.sup.3 is a monovalent chemical bond or a bivalent aliphatic hydrocarbon group or such group interrupted by the group --COO-- or --CONR--, andY is a sulpho, sulphato or phosphono group in acid or salt form, and at least one of the groups --(CH.sub.2).sub.n --, R.sup.2 and R.sup.3 is or comprises a hydrocarbon chain of at least 8 C-atoms.

Abstract: A new method to produce photographic images is provided which comprises:(a) imagewise exposing a photographic assembly which contains at least during the silver halide developing step, in order optionally a supercoat layer, at least one silver halide emulsion layer, a layer containing a substantive azamethine compound and a photobase, there being optionally one or more interlayers between each of said components(b) treating the exposed photographic assembly with an aqueous processing bath so as to provide in the silver halide emulsion layer or layers a solution or dispersion of a bleach developer compound, thereby to develop the latent silver image in the silver halide emulsion(s), and(c) in the non-latent image areas allowing the bleach developer compound to diffuse in a counter-imagewise manner from the silver halide emulsion layer (s) to the layer containing substantive azamethine compound and there to bleach the compound to form a dye image.

Abstract: A color photographic light-sensitive material is described containing a dye-releasing redox compound having the following formula: ##STR1## wherein G represents a hydroxy group or a group providing a hydroxy group by hydrolysis;Col represents a dye or a dye precursor;R.sup.1 and R.sup.2, which may be the same or different, each represents an alkyl group or an aromatic group, and R.sup.1 and R.sup.2 together can form a ring;R.sup.3 represents hydrogen, an alkyl group or an aromatic group;R.sup.4 can represent an alkyl group or an aromatic group;R.sup.5 can represent an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom or an acylamino group;n is 0, 1 or 2; andR.sup.4 and an R.sup.5 together can form a heterocyclic ring, R.sup.1 and R.sup.4 together can form a heterocyclic ring, R.sup.1 and an R.sup.5 together can form a ring, R.sup.1, R.sup.2 and R.sup.3 together can form an adamantyl ring, and the total number of carbon atoms of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sub.n.

Abstract: A process for developing a light-sensitive material comprising a support having thereon at least one internal latent image-forming silver halide photographic emulsion layer which comprises, after imagewise exposure, developing the light-sensitive material with an alkaline solution of a developing agent in the presence of a compound represented by the formula I which is capable of selectively forming latent images in the inner portions of said silver halide upon development: ##STR1## wherein Y represents an acyl group or a cyano group and said acyl group and the 3-, 4- or 5-position of the pyridinium ring may be optionally substituted.

Abstract: Silver halide emulsions are disclosed containing silver halide grains capable of forming an internal latent image. Incorporated in the emulsions is a diphenylmethane nucleating agent, thereby permitting a direct-positive image to be formed on imagewise exposure and photographic processing.

Abstract: In color photographic sensitive materials comprising at least one direct reversal silver halide emulsion layer associated with a diffusible dye-releasing redox compound on a base, the improvement which comprises that at least one of a layer containing said redox compound or said direct reversal silver halide emulsion layer contains about 5 to 200 mg per 100 millimols silver in the emulsion layer of a compound represented by the general formula (I): ##STR1## wherein A.sub.1 and A.sub.2 each represents a hydrogen atom or a hydrolyzable group, P, Q and R which may be the same or different each represents a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a hydroxyl group, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic group or an --S--Z.sup.2 group, Z.sup.1 and Z.sup.2 may be the same or different and each represents an unsaturated heterocyclic residue which is photographically inactive when bonded to the hydroquinone through the sulfur moiety, and --S--Z.

Abstract: A method is described for stabilizing organic substrate materials having an absorption maximum in the range of from about 300 nm to 800 nm to light which comprises making at least one complex represented by the formula (I) coexist with the organic substrate materials in an amount effective to stabilize said organic substrate material: ##STR1## wherein M represents copper, cobalt, nickel, palladium or platinum, and R.sup.1 and R.sup.2 independently represent a hydrogen atom, an alkyl group, an aryl group, an acyl group, an N-alkylcarbamoyl group, an N-arylcarbamoyl group, or an N-alkylsulfamoyl group, an N-arylsulfamoyl group, an alkoxycarbonyl group or an aryloxycarbonyl group.

Abstract: There are described novel compounds which include a silver halide developing function, a colorless ligand which is a radical of an iminodiacetic acid and a radical containing an onium group. The compounds are useful in photography as silver halide developing agents and also may be complexed with metals to form dye developers.

Abstract: A direct positive silver halide photographic light-sensitive material is described, comprising a support having coated thereon a light-sensitive silver halide photographic emulsion layer and a hydrophilic colloid layer, at least one of said layers containing a compound represented by the formula (I): ##STR1## wherein R.sup.1 represents R.sup.6 or R.sup.6 CO--; and R.sup.6 represents an aliphatic group, an aromatic group, a heterocyclic aromatic group or hydrogen; R.sup.2 and R.sup.4, which may be the same or different, each represents an aliphatic group, an aromatic group, a heterocyclic aromatic group or a hydrogen atom; or R.sup.1 and R.sup.2 together can form a ring; R.sup.3 represents hydrogen or an aliphatic group; R.sup.5 represents Y or X--A--Y wherein X and Y, which may be the same or different, each represents a divalent aromatic group; and A represents a divalent group selected from --CONH--, --NHCONH--, --SO.sub.2 NH--, --B--CONH-- and --B--SO.sub.

Abstract: A light reflecting layer for a color diffusion transfer photographic system which comprises at least one compound represented by the general formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 9 carbon atoms, R.sub.2 represents an alkyl group having 1 to 5 carbon atoms, and R.sub.3 represents an alkyl group having 1 to 9 carbon atoms or a benzyl group which may be substituted at the .alpha.-position.

Abstract: A process for incorporating photographic additives which are sparingly soluble to insoluble in water into a free-flowing, aqueous preparation which contains a hydrophilic colloid and is used to prepare photographic layers, by mixing the photographic additives with a combination of at least one non-ionic alkylphenol/alkylene oxide or diphenolmethane/alkylene oxide adduct and at least one anionic esterification product of these adducts and, optionally, a water-immiscible solvent and then finely dispersing this mixture in an aqueous solution of the hydrophilic colloid, which solution contains further water-soluble or dispersed water-insoluble constituents optionally.Spontaneous emulsions of the photographic additives with good fine dispersion are obtained in this way without high expenditure of mechanical energy. The emulsions are suitable for the preparation of photographic layers, which are used in photographic materials with improved characteristics.

Abstract: Novel electron donor precursors have the structure: ##STR1## where: R is an alkali labile group;Y is an aliphatic or aromatic group; andZ is an electron withdrawing group.The compounds are useful in photographic elements, film units and processes to provide electrons to immobile compounds which must accept at least one electron before releasing a diffusible dye or photographic reagent.

Abstract: A silver halide photographic light-sensitive material having a hydrophilic organic colloid layer containing a dispersion of a substantially water-insoluble photographic additive dissolved in a phosphoric acid ester represented by the following general formula (I): ##STR1## wherein R.sub.1 represents a saturated alicyclic group; and R.sub.2 and R.sub.3, which may be the same or different, each represents a saturated alicyclic group, an alkyl group or an aryl group.

Abstract: A silver halide emulsion containing an image dye-forming substance and a hydroquinone compound containing at least one electron attracting group as a color fog inhibiting agent.

Abstract: The light stability of organic dyes is improved by the presence of at least one of the complexes represented by general formula (I) or (II) ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1 and R.sup.4, which may be the same or different, each represents an alkyl group or an aryl group; R.sup.2 and R.sup.3, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group; or R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 may combine to represent a non-metallic atomic group necessary to form a 6-membered ring; and Z represents a non-metallic atomic group necessary to form a 5-membered ring, 6-membered ring, 8-membered ring, or 10-membered ring.

Abstract: A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.

Abstract: A compound of the following formula and use of this compound in a photographic material and a photographic diffusion transfer process for the production of color images: ##STR1## wherein R represents a hydrogen atom or an alkyl group with 1 to 4 C atoms;A represents an oxyalkylene group, such as --CH.sub.2 --CH.sub.2 --O--;n represents 1 or 2;X represents a residue of a dye or a dye precursor, which either directly or by means of an intermediate link Z is linked to the SO.sub.2 -group;Z represents an alkylene group of 1 to 6 C atoms, an arylene group, or a heterocyclic group, which is linked to the residue X either directly or by means of --O--, --S--, --SO.sub.2 --, --NR-- (R being hydrogen or an alkyl group), --CO--, --CO--NH--, or --SO.sub.2 --NH--;R.sup.1 represents --OR.sup.2, --SR.sup.2 or ##STR2## R.sup.2 being hydrogen, an alkyl group with 1 to 22 C atoms, a cycloalkyl group or an aryl group wherein said alkyl, cycloalkyl and aryl groups may be further substituted, R.sup.

Abstract: A method of stabilizing an organic substrate material such as a photographic dye against the action of light having an absorption maximum between about 300 nm and about 800 nm in wavelength by making co-exist with the organic substrate material at least one compound represented by the formula (I) defined in the specification is disclosed.

Abstract: A method of stabilizing organic substrate materials having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light which comprises making coexist with the organic substrate at least one metal complex salt represented by the following general formula (I): ##STR1## wherein Cat represents a divalent or a monovalent cation, and n is 1 or 2. A photographic material thus stabilized is also disclosed.

Abstract: A method of stabilizing an organic substrate material having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light without detracting from the color hue and the purity of the organic substrate material, which comprises making at least one metal complex salt represented by the following formula (I) coexist with the organic substrate material: ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 each represents a hydrogen atom, a halogen atom or a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic ring which may be attached directly to the carbon atom in the respective ring or through a divalent coupling group, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.6 and R.sup.7, R.sup.7 and R.sup.8, or R.sup.8 and R.sup.9 may combine to form the non-metal atoms necessary to complete a 6-membered ring; R.sup.

Abstract: A silver halide color photographic light-sensitive material comprising a support and at least one silver halide emulsion layer, at least one of the layers of said photographic sensitive material containing at least one compound selected from the group consisting of those compounds represented by the formulae (I), (II), (III) and (IV):[Co(NH.sub.3).sub.6 ][R.sup.1 COO].sub.3 (I)[Co(NH.sub.3).sub.6 ][R.sup.2 OOCR.sup.3 COO].sub.3 (II)[Co(NH.sub.3).sub.5 (R.sup.4 COO)]X.sub.2 (III)[Co(NH.sub.3).sub.5 (R.sup.5 NH.sub.2)]X.sub.3 (IV)wherein R.sup.1, R.sup.2 and R.sup.4 each represent an alkyl group having at least 3 carbon atoms or a fluorine-substituted alkyl group having at least 1 carbon atom; R.sup.3 is an alkylene group; R.sup.5 is an alkyl group having at least 1 carbon atom; X is a halogen atom, a nitrate ion, a sulfate ion, or a carboxylate ion is disclosed.

Abstract: Organic substrate materials having absorption maxima between 300 and 800 nm can be stabilized against the action of light by the presence of at least one compound represented by either of the following general formula (I) or (II): ##STR1## where M represents a metal atom selected from the group comprising Cu, Co, Ni, Pd and Pt; R.sup.1, R.sup.2, R.sup.3 and R.sup.4, may be the same or different and each represents a hydrogen atom, a halogen atom, cyano group, an alkyl group, an aryl group, a cycloalkyl group, or a heterocyclic ring, each of the latter four groups being bonded directly or via a divalent connecting group to the corresponding carbon atom of the benzene ring. Alternatively, R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4, may combine to represent the non-metallic atoms necessary to complete a 6-membered ring.R.sup.5 and R.sup.

Abstract: There are disclosed diffusion transfer color processes and products which employ novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein A is ##STR2## X is H, alkyl, aryl or substituted aryl; W is H or alkyl, R is H or alkyl; m and n are each integers of from 2 to 6.The image dye-providing material includes a diffusion control moiety such as a hydroquinonyl group and may be diffusible or nondiffusible as a function of the diffusion control moiety.

Abstract: In a color diffusion transfer photographic element containing at least one dye-releasing redox compound-containing layer associated with a silver halide photographic emulsion and capable of releasing a diffusible dye as a result of a redox reaction with the oxidation product of a developing agent produced by the development of silver halide with an alkaline processing solution, and at least one layer containing an antistain agent, the improvement which comprises said dye-releasing redox compound-containing layer associated with said silver halide photographic emulsion being spaced from the adjacent interlayer containing said antistain agent by a spacer layer essentially containing a hydrophilic colloid or by a silver halide emulsion layer having substantially the same spectral sensitivity as that of the associated silver halide emulsion.

Abstract: A light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic or aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic or an aromatic residue; and X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic group; and a method of forming a direct positive image which comprises processing a light-sensitive silver halide photographic material having a support carrying thereon an internal latent image type silver halide emulsion layer in the presence of the compound represented by the said formula (I). The compound is particularly effective in combination with diffusible dye releasing (DRR) compounds having o-hydroxyarylsulfamoyl groups.

Abstract: A process for the production of colored photographic images by the silver dye-bleach process by image-wise exposure and subsequent processing by developing the silver image, dye-bleaching and silver bleaching, it being possible, optionally, for the last two steps to be combined, silver fixing and washing, in which process dye-bleaching and/or silver bleaching is carried out in the presence of at least one bleach catalyst of the formula ##STR1## In the formula, A and B are in each case the non-metallic atoms necessary to complete a benzene or pyridine ring, R.sub.1 and R.sub.3 are each hydrogen, hydroxyl, halogen, alkyl, carboxyl, carbalkoxy, carbalkoxyalkoxy, --CH.sub.2 OH, --O(CH.sub.2).sub.n OH, --O(CH.sub.2).sub.2 O(CH.sub.2).sub.2 OH, --CH.sub.2 Cl, --CH.sub.2 Br, --NR.sub.5 R.sub.6, --CH.sub.2 NR.sub.5 R.sub.6, --O(CH.sub.2).sub.n NR.sub.5 R.sub.6, --CH.sub.2 SO.sub.3 M, --O(CH.sub.2).sub.n SO.sub.3 M or --SO.sub.3 M, R.sub.2 and R.sub.4 are each hydrogen, hydroxyl, alkyl or alkoxy and R.sub.5 and R.sub.

Abstract: Novel electron donor precursors have the structure: ##STR1## wherein: Z represents the atoms to complete a mono-, bi- or tricyclic ring system, each ring of which contains 5 to 6 nuclear atoms;n is 1 or 2;R.sup.1 is a monovalent aromatic group when n is 1 and a bivalent aromatic group when n is 2; andR.sup.2 represents hydrogen, an alkyl group, an aryl group, an acyl group, an ester group or an amido group.The compounds are useful in photographic elements, film units and processes to provide electrons to immobile compounds which must accept at least one electron before releasing a diffusible dye or photographic reagent.

Abstract: A nondiffusible sulfonamido compound which is alkali-cleavable upon oxidation to release a diffusible photographically useful material, said nondiffusible sulfonamido compound having the formula: ##STR1## wherein: (a) R.sup.1 is alkyl, aryl sulfamyl, carbamyl, carbonamido, carbonyl, carbonyloxy or sulfonamido;(b) R.sup.2 is alkyl having from 1 to 18 carbon atoms, aryl, or alkylphenyl having from 7 to 12 carbon atoms;(c) R.sup.3 and R.sup.4 are independently alkyl, or aryl, or R.sup.3 and R.sup.4, taken together, form a fused carbocyclic or heterocyclic ring;(d) NHSO.sub.2 PUG represents a sulfonamido group;(e) PUG represents a photographically useful group; and(f) at least one of R.sup.1, R.sup.2, R.sup.3, or R.sup.

Abstract: A method of stabilizing organic substrate materials having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light which comprises making coexist with the organic substrate at least one metal complex salt represented by the following general formula (I): ##STR1## wherein Cat represents a divalent or a monovalent cation, and n is 1 or 2. A photographic material thus stabilized is also disclosed.

Abstract: Photographic elements, assemblages and processes for color diffusion transfer photography are described wherein certain azole compounds having at least two nitrogen atoms are employed as development restrainer precursors. Preferred azole compounds include benzotriazoles, triazoles, tetrazoles, indazoles and benzimidazoles. The azole compounds have an alkali-hydrolyzable, N,N-disubstituted carbamoyl group on one of the two nitrogen atoms.

Abstract: A direct positive light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic residue or an aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic residue, or an aromatic residue; X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic residue; and Y represents --R--, --O--R or --S--R-- wherein R represents a divalent aliphatic residue and the O or S is bonded to X.sub.1. The compound is particularly effective in combination with a diffusible dye releasing dye image providing compound having an o-hydroxyarylsulfamoyl group.

Abstract: Organic substrate materials having absorption maxima between 300 and 800 nm can be stabilized against the action of light by the presence of at least one compound represented by either of the following general formula (I) or (II): ##STR1## where M represents a metal atom selected from the group comprising Cu, Co, Ni, Pd and Pt; R.sup.1, R.sup.2, R.sup.3 and R.sup.4, may be the same or different and each represents a hydrogen atom, a halogen atom, cyano group, an alkyl group, an aryl group, a cycloalkyl group, or a heterocyclic ring, each of the latter four groups being bonded directly or via a divalent connecting group to the corresponding carbon atom of the benzene ring. Alternatively, R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4, may combine to represent the non-metallic atoms necessary to complete a 6-membered ring.R.sup.5 and R.sup.

Abstract: Hydroquinone esters are incorporated in photographic elements for color diffusion transfer assemblages and release a competing developer upon contact with a processing composition, to terminate further dye release. The hydroquinone esters are employed in a concentration sufficient, upon hydrolysis, to reduce substantially all the silver in the silver halide emulsion.

Abstract: Photographic couplers which release a photographically useful group by an intramolecular nucleophilic displacement reaction can be used in photographic emulsions, elements and processes to provide a photographically useful group in a controlled manner.

Abstract: A method of stabilizing an organic substrate material having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light without detracting from the color hue and the purity of the organic substrate material, which comprises making at least one metal complex salt represented by the following formula (I) coexist with the organic substrate material: ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 each represents a hydrogen atom, a halogen atom or a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic ring which may be attached directly to the carbon atom in the respective ring or through a divalent coupling group, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.6 and R.sup.7, R.sup.7 and R.sup.8, or R.sup.8 and R.sup.9 may combine to form the non-metal atoms necessary to complete a 6-membered ring; R.sup.

Abstract: The light stability of organic dyes is improved by the presence of at least one of the complexes represented by general formula (I) or (II) ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1 and R.sup.4, which may be the same or different, each represents an alkyl group or an aryl group; R.sup.2 and R.sup.3, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group; or R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 may combine to represent a non-metallic atomic group necessary to form a 6-membered ring; and Z represents a non-metallic atomic group necessary to form a 5-membered ring, 6-membered ring, 8-membered ring, or 10-membered ring.

Abstract: A photographic element having on a support at least one silver halide emulsion layer having associated therewith a development inhibitor precursor represented by the formula (I) ##STR1## wherein A is a phenyl group, a substituted phenyl group or a 5- or 6-membered nitrogen-containing heterocyclic ring; said A splitting together with the sulfur atom in the above molecule from the residue of the molecule to provide a silver halide development inhibitor; R.sup.1 is an alkyl group having 1 to 4 carbon atoms; and R.sup.2 is a cyano group, a carbamoyl group or the group represented by the formula ##STR2## wherein R.sup.3 is an aryl group.

Abstract: A direct positive light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic residue or an aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic residue, or an aromatic residue; X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic residue; and Y represents ##STR2## or a direct bond wherein the O or S is bonded to X.sub.1 ; R represents a divalent aliphatic residue and R.sub.3 represents an aliphatic residue or an aromatic residue. The compound is particularly effective in combination with a diffusible dye releasing dye image providing compound having an o-hydroxyarylsulfamoyl group.

Abstract: The light stability of organic substrate materials such as photographic dyes is improved by the copresence of at least one of the complexes shown by following formulae I, II, III, or IV ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a hydrogen atom, a halogen atom, a cyano group or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded directly or through a divalent connecting group to the carbon atom of a benzene ring; or R.sup.1 and R.sup.2 ; R.sup.2 and R.sup.3 ; or R.sup.3 and R.sup.4 combine to represent the non-metallic atoms necessary to complete a 6-membered ring; R.sup.5 and R.sup.8 each represents a hydrogen atom, an alkyl group, or an aryl group; R.sup.6 represents a hydrogen atom, an alkyl group, an aryl group, or a hydroxyl group; R.sup.7 represents an alkyl group or an aryl group; and Z represents the non-metallic atoms necessary to complete a 5-membered or 6-membered ring.

Abstract: Organic substrates, especially photographic dyes, are stabilized against light by using a Cu, Co, Ni, Pd or Pt complex of formula (I). ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; R.sub.1 and R.sub.6 may be the same or different and represent a hydrogen atom or an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group or an arylsulfonyl group; and R.sub.2, R.sub.3, R.sub.4 and R.sub.5 which may be the same or different represent a hydrogen atom, a halogen atom, a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded to a carbon atom on a benzene ring directly or through a divalent linking group, or R.sub.2 and R.sub.3, R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 respectively may combine and represent the non-metallic atomic groupings required to form a 6-membered ring.

Abstract: A method of stabilizing an organic substrate material such as a photographic dye against the action of light having an absorption maximum between about 300 nm and about 800 nm in wavelength by making co-exist with the organic substrate material at least one compound represented by the formula (I) defined in the specification is disclosed.

Abstract: A color image forming process comprising processing a photographic element having silver image-wise distributed therein in the presence of a specific type of complexing agent, an oxidizing agent which is peroxo acid or salt thereof, and a dye or dyes, to oxidatively bleach the dye or dyes. By the process of this invention, color images which are stable to light, heat and moisture are obtained using photosensitive materials containing a reduced amount of silver salt or silver without using chemicals causing pollution problems for the processing.

Abstract: A method for stabilizing an organic substrate to light the substrate having an absorption maximum in the range of about 300 nm-about 800 nm, which comprises making at least one complex represented by following general formula (I) coexist with the substrate: ##STR1## wherein M represents an atom selected from the group consisting of Cu, Co, Ni, Pd and Pt, X represents O or S, R.sub.1 represents an alkyl group, an aryl group, an alkoxy group, an aryloxy group or, when taken together, the R.sub.1 's bound to the same phosphorus atom represent the non-metallic atoms necessary to complete a 6-membered ring together with the phosphorus atom. A photographic element containing the above complex is also claimed.

Abstract: The stability of organic substrates having an absorption maximum between 300 and 800 nm in wavelength can be improved by at least one compound represented by the formula (I); ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 eachrepresents an oxygen or sulfur atom, R.sub.1 and R.sub.2 each represents an alkyl, an aryl, a cycloalkyl, an oxocyclalkyl or a heterocyclic group attached to the carbon atom on the chelate ring directly or through a divalent connecting group, R.sub.3 represents a hydrogen atom, an alkyl, an aryl, a cycloalkyl, an oxocycloalkyl or a heterocyclic group attached to the carbon atom on the chelate ring directly or through a connecting group whereby R.sub.1, R.sub.2 and R.sub.3 may be the same or different and R.sub.1 and R.sub.3 or R.sub.2 and R.sub.3 may combine with each other to form a 5-, 6- or 7- member ring structure.

Abstract: In a dry physical development photothermographic element for a dry thermal silver-dye bleach process wherein the element comprises a silver halide complexing concentration of a silver halide complexing agent improvements are provided when the complexing agent is an organic ammonium chloride, bromide or iodide. After imagewise exposure of the element, a dye image can be produced by uniformly heating the element. Improvements are also produced by providing a dry activator element for producing a dye image in a separate photographic element by means of a dry physical development thermal dye-bleach process, wherein the activator element comprises a support having thereon a layer comprising a synthetic hydrophobic polymeric binder, a silver halide complexing concentration of a silver halide complexing agent, as described, a bleachable dye and a thermal solvent.

Abstract: Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye: ##STR1## wherein: each of (Nuox).sup.1 and (Nuox).sup.2 represents an oxidized nucleophilic group,Z represents a bivalent atomic group which is electronegative,Q together with the Z group represents a releasable photographically useful group,each of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, halogen, alkyl, alkoxy, or an acylamino group or R.sup.1 and R.sup.2 in adjacent positions on the ring form a ring fused with the remainder of the molecule, or R.sup.2 and R.sup.3 together are fused with the remainder of the molecule.each of R.sup.4 and R.sup.5 represents hydrogen or a hydrocarbon group.At least one of the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4 or R.sup.5 is a ballasting group X.

Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 2-(2-heterocyclylazo)-1-naphthol dye moiety which contains a nitrogen atom adjacent to the point of attachment to the azo linkage. The compound contains a ballasted carrier moiety which is capable of releasing the diffusible azo dye under alkaline conditions. The dye is transferred imagewise to an image-receiving layer where it is contacted with metal ions to form a metal-complexed azo dye transfer image of excellent stability.

Abstract: This invention is directed to photographic elements having hydrophilic colloid layers containing loaded particles of from 0.02 to 0.2 micron in average diameter consisting essentially of a loadable polymer, with greater than 2 percent by weight of the polymer being derived from monomers capable of forming water soluble homopolymers. A hydrophobic photographic dye, coupler, developing agent or ultraviolet absorbing compound is loaded into and distributed through the particles. The weight ratio of the hydrophobic photographic dye, coupler, developing agent or ultraviolet absorbing compound to the loadable polymer is from about 1:4 to 3:1.

Abstract: Novel photographic processing compositions including a polymeric oxime viscosity-increasing reagent for processing an exposed film unit to provide a photographic image. While this photographic image may be in black-and-white or in color and prepared by any of the heretofore known systems, of particular interest are color diffusion transfer systems for preparing a color image viewable without separation of any of the components or layers of the photographic product. The invention also includes a novel class of polymeric oximes which may be employed in such compositions.