Abstract: This invention relates to a photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based on the amount of this compound, about 1 to 50 per cent by weight of an organic dye capable of salt formation and about 5 to 75 per cent by weight of a photosensitive halogen-containing compound which releases acid upon exposure to light and having one of the general formulae I or II ##STR1## in which R.sub.a is an aryl group or a heterocyclic group which may be substituted, R.sub.b is a trihaloalkyl group or a trihaloalkenyl group having from 1 to 3 carbon atoms, and n is 1, 2 or 3.

Abstract: Light sensitive coating compositions containing a dyestuff, which compositions exhibit improved adhesion to transparent film substrates, are disclosed. For example, the adhesion between a polyester base film and a light sensitive coating composition containing a light sensitive diazo material, a resinous binder and a dyestuff is improved by additionally incorporating into the composition an effective amount of an adhesion promoter based on a copolyester obtained by the esterification and subsequent polymerization of a lower alkylene glycol with a mixture of terephthalic acid, isophthalic acid, and at least one acyclic dicarboxylic acid. These coating compositions may be readily removed from the base film by appropriate lithographic developer solutions without substantial residual staining of the film by the dyestuff present in the coating composition.

Abstract: A process for intensifying a silver image formed photographically to obtain a non-silver metal image of high optical density comprising treatment with a non-silver physical developer solution containing (1) at least one of an amine borane compound and a borohydride compound, (2) at least one of an amine compound and an ammonium compound, and (3) a compound of a non-silver metal, within a specified temperature range and the non-silver physical developer solution used therein.

Abstract: A photographic color developer composition containing a color developer compound and an antioxidant wherein it contains a water-soluble enolizable .alpha.-aminocarbonyl compound as antioxidant is provided. Resistance to atmospheric oxygen of photographic color developer baths is improved.

Abstract: A liquid developer for use in developing binary diazo copying materials which consists essentially of an alkali metal salt of an aminoacid and/or an alkaline earth metal salt of an aminoacid.

Abstract: There is disclosed a method for producing improved quality photographs on microfilm and improved quality diazo microfiche duplicates. A negative half-tone image of a real world subject is produced on a photosensitive medium. A negative of that image is then formed on microfilm, such negative being a positive half-tone image of the real world subject. Diazo duplicates are then made, if desired, using the negative image (positive half-tone image of the real world subject) on the microfilm as the master.

Abstract: A method is described of making reversal images in Lippmann-emulsions wherein the emulsion is image-wise exposed and subjected to a first stage development so that a negative silver image of the original is formed but some silver halide is left in the exposed areas, and then to a second stage development under fogging conditions to develop said residual silver halide in the exposed areas, whereafter the silver developed in said first and second development stages is bleached and the active silver halide then still remaining in the emulsion is converted to form a positive image.

Abstract: A photographic process for forming photographic images comprising processing a photographic element comprising a support and at least a silver halide photographic emulsion layer having image-wise distributed therein a material possessing a catalytic action with a cobalt (III) complex with a photographic processing solution containing at least a cobalt (III) complex having a coordination number of 6 in the presence of a primary aromatic amine developing agent, in which the formation of fog is prevented by contacting the photographic processing solution with one side of a fine open-cell porous diaphragm of a hydrophobic material, such as a porous Teflon film, the other side of which is in contact with an acid solution, whereby fogging components in the processing solution are removed from the processing solution into the acid solution through the porous diaphragm.

Abstract: A method of forming a photographic image which comprises image-wise exposing a silver halide photographic element containing at least one compound having a degree of polymerization of about 10 to about 8,000 and represented by the following general formula (I):--a).sub.x (B).sub.y (I)whereinA represents ##STR1## or --CH.sub.2 --CH.sub.2 --O--, R represents ##STR2## or --OH, m is an integer of 3 to 7, R.sub.1 represents an alkyl group having 1 to 6 carbon atoms, and R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;B represents a monomer unit derived from styrene, methacrylic acid ester, acrylic ester, vinyl acetate, acrylonitrile, vinyl alcohol, vinyl chloride, vinyl ether, acrylamide, N,N-dimethylacrylamide, acrylic acid, methacrylic acid, maleic acid, potassium styrenesulfonate, N,N-dialkylaminoalkyl methacrylate, vinylimidazole or vinylpyridine; andX and y represent the mole%, respectively, of A and B, with x + y = 100 and in which x .gtoreq.

Abstract: Quinoxalines of the formula ##STR1## are provided, in which R.sub.1 is hydrogen if R.sub.3 and R.sub.4 conjointly are --O(CH.sub.2).sub.p O--, or is --CH.sub.2 OR, --CH.sub.2 NRR', --CH.sub.2 OCOR, --CH.sub.2 Cl, --CH.sub.2 Br, --CH.sub.2 CN, --CH.sub.2 SR, --CH.sub.2 SCN, --CH.sub.2 O(CH.sub.2).sub.m OR, --CH.sub.2 (OCH.sub.2 CH.sub.2).sub.n OR, --CH.sub.2 SO.sub.2 R.sub.5, --CH.sub.2 PO(OR.sub.5).sub.2, --CH.sub.2 SO.sub.3 R.sub.6 or --CH.sub.2 PO(OR.sub.6).sub.2 and R.sub.2 is lower alkyl, --CH.sub.2 PO(OR.sub.5).sub.2, --CH.sub.2 PO(OR.sub.6).sub.2 or CH.sub.2 SO.sub.3 R.sub.6, R.sub.3 and R.sub.4 independently are lower alkyl, lower alkoxy, RO(CH.sub.2).sub.m O-- or RO(CH.sub.2 CH.sub.2 O).sub.n -- or R.sub.3 and R.sub.4 conjointly are --O(CH.sub.2).sub.p O--, R and R' independently are hydrogen or lower alkyl, R.sub.5 is lower alkyl, R.sub.6 is hydrogen, an alkali metal cation or --N.sup..sym. (R).sub.4, m is 3 or 4, n is 1 to 3 and p is 1 or 2.

Abstract: Process for developing light-sensitive silver halide photographic materials with a developing solution in the presence of one or more of sulfur-containing amine compounds.

Abstract: This invention relates to an improvement in a light-sensitive copying material, the copying layer of which comprises a water-soluble, curable binder and a diazonium salt polycondensation product of recurring units of the general types (A-N.sub.2 X) and (B) which are linked to one another by intermediate members which have two bonds and are derived from a carbonyl compound capable of undergoing a condensation reaction, wherein A is the radical of a compound which contains at least two isocyclic or heterocyclic aromatic rings and is able to undergo a condensation reaction, at least at one point in the molecule, with formaldehyde in an acid medium, B is the radical of a compound which is free of diazonium groups and is able to undergo a condensation reaction, at least at one point in the molecule, with formaldehyde in an acid medium, and X is the anion of an acid which forms a water-soluble salt with the condensation product, the improvement being that fish glue is the water-soluble, curable binder.

Abstract: In a method of processing an image-wise exposed silver halide color photographic material by applying thereto at least a color development processing and a silver removal processing (including performing a bleaching and a fixing separately or simultaneously, (e.g., a blixing)), the improvement which comprises processing, after the color development processing, the silver halide color photographic material with a processing bath containing a compound, as a bleach accelerator, represented by the following general formula (I): ##STR1## wherein R represents an --NR.sup.4 R.sup.5 group, an --O--R.sup.6 group or an --S--R.sup.6 group; R.sup.6 represents an atomic group necessary for forming a ring together with R.sup.1 ; R.sup.1, R.sup.4 and R.sup.5, which may be the same or different, each represents a hydrogen atom or an alkyl group; R.sup.2 and R.sup.

Abstract: An image forming method comprising development processing a silver halide photographic material in the presence of at least one block copolymer represented by the following general formula (I):y[(ch.sub.2 ch.sub.2 ch.sub.2 ch.sub.2 o).sub.m --(CH.sub.2 CH.sub.2 O).sub.n --R].sub.x (I)and/or the general formula (II):ho(ch.sub.2 ch.sub.2 o).sub.a (CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 O).sub.b (CH.sub.2 CH.sub.2 O).sub.c H (II)wherein Y represents an organic residue of x valence; R represents a hydrogen atom or an alkyl group containing 1 to 18 carbon atoms; m is an integer of from 5 to 50; n is an integer of from 10 to 100; b is an integer of from 8 to 50; a + e ranges from 5 to 100; and the polyoxyethylene moieties therein comprise about 10 to about 70% by weight of the total weight of the compound; and x represents an integer of from 1 to 3.

Abstract: A color developer composition is provided which has substantially improved protection against oxidation of the color developer and excellent sequestering properties characterized in that the composition comprises an .alpha.-aminocarbonyl compound, an organo-phosphonic acid and an aminocarboxylic acid.

Abstract: A method for forming images which comprises processing a silver halide color photographic light-sensitive element containing in the uppermost layer thereof a matting agent composed of methyl methacrylate-methacrylic acid copolymers having a methyl methacrylate/methacrylic acid molar ratio of 6:4 to 9:1 at a temperature above about 30.degree. C. The matting agent is capable of being dissolved into alkaline processing solutions and does not adversely affect the transparency and graininess of the images formed.

Abstract: A process for developing photographic silver halide material, which has been exposed image-wise is provided. The aqueous developer preparation used contains a developer compound for the silver halide, a water-soluble solvent for the silver halide and an aliphatic, cycloaliphatic, aromatic or heterocyclic di- or trisulphide. These preparations remain clear over a long period of time during which they do not lose their effectiveness by becoming turbid or by sedimentation of silver. They are of special advantage in continuously operated photographic developing processes.

Abstract: In a multilayer color photographic material essentially comprising a support having coated thereon, in succession, a red-sensitive silver halide emulsion layer and a green-sensitive silver halide emulsion layer, with an optional yellow filter layer and a blue-sensitive silver halide emulsion layer, by disposing a non-sensitive auxiliary layer containing a non-diffusible colored coupling compound which releases a diffusible dye at color development capable of being removed from the photographic layer at development, an effective masking can be applied to the side absorption of cyan dye image without reducing the sensitivity of the red-sensitive silver halide emulsion layer during storage before or after exposure.

Abstract: In the processing of developed imagewise exposed silver halide photographic material with a solution having fixing ability, the fixing efficiency is improved and environmental pollution prevented by employing a solution containing bromine ions or iodine ions as the fixing agent and incorporating in said solution or in a post-bath solution, a polymer having in its molecular structure pyrrolidone nucleus units and a molecular weight of about 2,000 to 500,000.

Abstract: There is disclosed a process for the production of a dye image on a silver halide photograhic material which comprises imagewise exposing the photographic material to light and then subjecting the photographic material to development in the presence of both a particular polyfunctional coupler and a particular polyfunctional developing agent.