Abstract: A silver halide photographic material comprising a support having thereon at least one photosensitive silver halide emulsion layer with the silver halide photographic material containing at least one compound, as an ultraviolet absorbing agent, represented by the general formula (I) ##STR1## wherein Z represents the atoms necessary for forming a pyrrolidine nucleus or a thiazolidine nucleus; R.sub.1 represents an alkyl group or an aryl group; R.sub.2 and R.sub.3, which may be the same or different, each represents a cyano group, a carboxy group, --COR.sub.4 or --COOR.sub.4 ; R.sub.4 represents an alkyl group or an aryl group; and n represents 1 or 2, and when n is 2, one of R.sub.1 and R.sub.

Abstract: A color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, a non-diffusible color coupler present in at least one layer on the support and a layer containing at least one compound represented by the following general formula (I) ##STR1## wherein R.sub.1 represents an alkyl group, a hydroxyalkyl group, an alkoxyalkyl group or an alkylsulfonamidoalkyl group; R.sub.2 represents an alkyl group, a hydroxyalkyl group, an alkoxyalkyl group or an alkylsulfonamidoalkyl group, R.sub.3 represents a hydrogen atom, an alkyl group or an alkoxyalkyl group, and R.sub.4 and R.sub.5, which may be the same or different, each represents a hydrogen atom, a halogen atom, a carboxyl group, a sulfo group, a nitro group, a carboxylic acid ester group, an alkyl group or an alkoxyalkyl group.

Abstract: A silver halide photographic light-sensitive material containing a novel development inhibitor releasing coupler compound, capable of forming a substantially colorless product, represented by the following general formula (I): ##STR1## wherein R represents ##STR2## X represents ##STR3## --SO.sub.2 R.sub.2, --SO.sub.2 OR.sub.2, --SO.sub.2 N(R.sub.2).sub.2, --SO.sub.2 NHR.sub.2, --CN, --N.sup.+ (R.sub.2).sub.3 or ##STR4## R.sub.1 and R.sub.2 each represents an aliphatic group, an aromatic group or a heterocyclic group and further two R.sub.

Abstract: The present invention relates to novel bicyclic compounds useful as photographic silver halide developing agents, to the preparation of these compounds and to photographic products, processes and compositions employing the same. The subject compounds may be represented by the formula ##STR1## wherein R.sub.1 and R.sub.2, the same or different, each represents hydrogen, a hydrocarbon moiety, preferably an alkyl group, --COOH or --COOR.sup.1 wherein R.sup.1 is an alkyl group; R.sub.3 and R.sub.4, the same or different, each represent hydrogen or an alkyl group, R.sub.5 represents hydrogen or --COR.sup.2 wherein R.sup.2 is an alkyl group; R.sub.6 represents hydrogen when R.sub.5 is hydrogen and represents hydrogen or --OCOR.sup.3 wherein R.sup.3 is an alkyl group the same as R.sup.2 when R.sub.5 represents --COR.sup.2 ; X represents --OH, --NH.sub.2 or --NHCOR.sup.4 wherein R.sup.4 represents an alkyl group the same as R.sup.2 ; Y represents --OH or --OCOR.sup.5 wherein R.sup.

Abstract: A light-sensitive silver halide color photographic material is disclosed which contains a support having coated thereon a red-sensitive silver halide emulsion layer, a non-light-sensitive layer adajcent to the red-sensitive silver halide emulsion layer, and a light-sensitive silver halide emulsion layer adjacent to the non-light-sensitive layer. The non-light-sensitive layer contains substantially non-light-sensitive silver halide grains while the red-sensitive silver halide emulsion layer contains a DIR compound and a particular 2-equivalent substantially colorless cyan coupler.

Abstract: A process for forming a direct positive image by developing, after imagewise exposure to an internal latent image type light-sensitive silver halide photographic material, with a surface developer for silver halide, which process comprises incorporating at least one fogging agent selected from hydrazine compounds, N-substituted cycloammonium salts and benzimidazole derivatives in combination with an amineborane compound into said light-sensitive silver halide photographic material, said surface developer and/or a treating bath used prior to the treatment by said surface developer.

Abstract: Hexahydro-4,6-diimino-1,3-pyrimidine-2-thiones having a phenyl group substituent in the 1-position have been found to be antifoggants for silver halide photographic emulsions.

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: Physical and photographic characteristics of silver halide emulsions containing salts of multivalent metals are improved by adding synthetic water-insoluble terpolymers of acrylic esters, glycidyl acrylates and acrylamides as emulsion additives. The crosslinkable terpolymers are highly compatible with silver halide emulsions containing multivalent metal salts when an acrylamide is a polymer component at less than 15 wt% and an anionic sulfate surfactant of the formula ##STR1## where R.sub.5 is a straight or branch-chain alkyl group of C.sub.4 -C.sub.12, R.sub.6 is a straight of branch-chain alkyl group of C.sub.8 -C.sub.20, n is an integer of 8 to 40, and M.sup.+ is an ammonium ion or, a monovalent metal ion such as potassium, sodium or cesium, is the dispersing agent during emulsion polymerization.

Abstract: A silver halide photographic light-sensitive material having improved image quality which comprises at least one hydrophilic colloid layer containing at least one reducing compound, preferably having an oxidation potential less than about 1.

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 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: Aromatic nitro compounds are disclosed where the aromatic ring contains electron-withdrawing groups and said aromatic nitro compound is capable of undergoing intramolecular nucleophilic displacement after reduction of the nitro group. The compounds are especially useful in photographic elements where an image dye-providing material or a photographic reagent are released upon cleavage from the compound.

Abstract: Positive images including color images are obtained by imagewise exposure and development of a material which comprises at least one light-sensitive silver halide emulsion layer which contains an unfogged direct-positive silver halide emulsion, when the development is carried out in the presence of a fogging agent of the formula ##STR1## wherein the symbols are defined as hereinafter. The fogging agent is preferably contained in a layer of the material and more preferably in the unfogged direct-positive silver halide emulsion layer. For the production of color instant images the material may also contain non-diffusible color providing compounds capable in their oxidized form of being split under alkaline photographic development conditions to release diffusible dyes.

Abstract: Photographic elements, processes for forming images in photographic elements and new compounds are disclosed. Generally, the invention relates to ballasted electron-accepting nucleophilic displacement compounds; after acceptance of at least one electron (reduction) by a nucleophile precursor group, the compounds are capable of undergoing intramolecular nucleophilic displacement to release a diffusible moiety, such as an image dye or a photographic reagent. In certain embodiments, the ballasted electron-accepting nucleophilic displacement compounds are used in combination with electron donors and electron-transfer agents. The processes disclosed are particularly useful in providing positive transfer images using negative-working silver halide emulsions.

Abstract: A method of forming an image which comprises development processing an image-wise exposed silver halide photosensitive element in the presence of at least one compound represented by the following general formula (I): ##STR1## wherein X.crclbar. represents an anion; R.sub.1 represents a --Y--R.sub.3 group, a --Y--COOR.sub.3 group, a --Y--OCOR.sub.3 group, a --Y'--COO--Y--OCO--R.sub.3 group, a --Y'--OCO--Y--COO--R.sub.3 group or a --Y'--COO--Y--COO--R.sub.3 group; Y represents an alkylene group having 1 to 18 carbon atoms, an arylene group or an aralkylene group; R.sub.3 represents an alkyl group having 1 to 18 carbon atoms, an aryl group, an aralkyl group, a ##STR2## group or a ##STR3## group; R.sub.4 represents an alkyl group having 1 to 18 carbon atoms, an aryl group or an aralkyl group; R.sub.2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, an oxycarbonyl group (--COOR.sub.

Abstract: A novel class of redox releasing compounds contains an N,N-disubstituted carbamoyl ballast group. These compounds can be used in photographic elements and processes to release a dye or other photographically useful group as a function of silver halide development.

Abstract: Polymeric derivatives of tetrazole-5-thiols are useful in conjunction with photosensitive silver halide elements as interlayers to provide interimage control, as dispersants for dye image-forming materials or as silver scavengers.

Abstract: A photographic element is disclosed having coated on a support a hydrophilic colloid layer containing an activator precursor and loaded polymer particles of from 0.02 to 0.2 micron in average diameter. The polymer particles consist essentially of a hydrophobic polymer of which at least 2 percent by weight is comprised of ionizable repeating units, at least half being cationically ionizable, and a hydrophobic developing agent present in a weight ratio to the polymer of from about 1:4 to 3:1. Silver halide is present in the hydrophilic colloid layer or in an adjacent layer, and the activator precursor is present in a concentration of from 1 to 4 equivalent for each mole of silver halide. The photographic element is capable of being thermally processed.

Abstract: A color photographic light-sensitive element comprising a support having thereon a silver halide emulsion layer containing therein a 3-anilino-2-pyrazolin-5-one magenta color forming coupler, which prevents yellow staining at the unexposed areas after color development processing, and which particularly prevents an increase in yellow staining due to irradiation of light with the magenta color images obtained using the color photographic element containing the magenta coupler maintaining a clear color even after irradiation of light.

Abstract: Compounds of the general formula ##STR1## wherein A and B are hydroxy radicals in the 4,7 or 5,6 positions and X.sup.- represents Br.sup.-, Cl.sup.- or I.sup.- are incorporated into light-sensitive silver halide emulsions to improve their sensitometric characteristics. In general, these compounds act as antifoggants by restraining fog growth but at the same time act as development accelerators by increasing gradient and Dmax, usually at some speed loss.

Abstract: In one embodiment, the present invention relates to pyrazolidine derivatives, some of which are novel compounds, all of which are represented by the formula: ##STR1## wherein R.sup.1 and R.sup.2 taken individually, the same or different, are each hydrocarbon moieties containing up to about 20 carbon atoms selected from alkyl, aryl, aralkyl and alkaryl, which moieties may be unsubstituted or substituted with a substituent selected from carboalkoxyalkyl, aryl, alkyl, alkoxy, hydroalkyl, aminoalkyl, ketalalkyl and acetalalkyl, and R.sup.1 and R.sup.2 taken together represent the carbon atoms necessary to complete a cyclic moiety selected from: ##STR2## which cyclic moieties may be unsubstituted or substituted with the above-identified substituents; Y is --OH or --NH.sub.2 ; and X is --OH, --NH.sub.2, --NH.sub.2.Z where Z is a salt, or --NHR where R is alkyl or aryl.

Abstract: A method for adding oil-soluble photographic addenda in the form of their solution in a high boiling organic solvent to a hydrophilic colloidal solution for forming a layer of a light-sensitive silver halide photographic material in the homogeneously dispersed state, is described.

Abstract: Difunctional compounds wherein one of said functions is a hard or soft atom that ionizes to the corresponding anion in alkaline solution to combine with silver cation and the other of said functions is a non-ionizable soft base that additionally combines with said silver cation are employed as silver halide complexing agents in photography. In a preferred embodiment, the difunctional compounds possess (a) an O, N or C atom that ionizes to the corresponding O.sup..crclbar., N.sup..crclbar. or C.sup..crclbar. anion in basic solution and (b) an --S-- containing moiety excluding --SH and moieties that form --S.sup..crclbar. in basic solution wherein the --S-- of said moiety is positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.

Abstract: In a method of stabilizing photographic silver halide emulsion layers containing polyalkylene oxide compounds a protective gelatine layer is applied to the emulsion layer which contains from 0,35 to 35 mg of a water soluble thiosulphate.

Abstract: Photographic elements for providing black-and-white images contain a silver halide emulsion having associated therewith a non-diffusible resorcinol coupler and a color developing agent or a precursor of a color developing agent. The elements can be processed by simple alkaline activation. Since image density is derived at least in part from the resorcinol coupler, lower silver halide coverages can be employed or the silver can be recovered, or both.

Abstract: A method of producing a lithographic photosensitive material comprising adding a water soluble iridium compound to the photographic emulsion in a ratio of about 10.sup.-6 to 10.sup.-4 mole per mole of the silver halide at the first or second ripening procedure of a silver halide photographic emulsion containing at least 60 mole% silver chloride, further adding a hydroxytetrazaindene compound and a polyoxyethylene compound to the photographic emulsion and coating the photographic emulsion on a support.

Abstract: A color photographic light-sensitive material comprising a support having thereon at least one layer of a silver halide photographic emulsion with the light-sensitive material containing at least one hydroquinone compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, ##STR2## or a precursor thereof.

Abstract: A photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer containing a coupling compound which forms a colorless compound with oxidized developer, said coupling compound having the formula ##STR1## wherein R, X and Y are defined in the specification.

Abstract: A lith-type silver halide photographic light-sensitive material for forming halftone dot images is disclosed which contains a sensitizing dye represented by the following general formula: ##STR1## WHEREIN Z.sub.1 is an atomic group necessary for forming a naphthothiazole ring, Z.sub.2 is an atomic group necessary for forming a member selected from a group consisting of substituted or unsubstituted, benzothiazole, benzoselenazole, naphthothiazole and naphthoselenazole nucleus, R.sub.1 and R.sub.2 are respectively a substituted or unsubstituted alkyl group, X.sup..theta. is an anion, and n is a positive integer of 1 or 2 with the proviso that when the dye is an inner salt, n is 1.

Abstract: Photographic silver halide emulsions which have their sensitivity increased by the addition of sulfur-substituted isothioureas of the formula; ##STR1## where R, R.sub.2, and R.sub.3 are organic radicals and R.sub.1 is an organic radical or H.

Abstract: A direct positive silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer of the internal latent image type and being capable of forming a direct positive image, in which at least one hydrophilic colloid layer contains at least one heterocyclic quaternary salt compound represented by the following general formula (I) ##STR1## wherein Z represents an atomic group necessary for forming a 5- or 6-membered heterocyclic nucleus, R.sub.1 represents an aliphatic group, R.sub.2 represents a hydrogen atom or an aliphatic group, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, a halogen atom, an aliphatic group, an alkoxy group, a hydroxy group or an aromatic group, and at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents a propargyl group, a butynyl group or a substituent containing a propargyl or butynyl group, X.crclbar.

Abstract: A photographic developing agent represented by the formula (I): ##STR1## wherein one of X and Y is a group capable of inhibiting development on release immediately after the developing agent is oxidized at the step of development, and the other of X and Y is an --NH--SO.sub.2 --Z group (wherein Z is an alkyl group, an aryl group or a heterocyclic group); A is a hydrogen atom or a group hydrolyzable under alkaline conditions; R.sub.1, R.sub.2, and R.sub.3, which may be the same or different, each is a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, an --S--Z' group (wherein Z' is an alkyl group, an aryl group or a heterocyclic group), an --NH--SO.sub.2 --Z" group (wherein Z" is an alkyl group, an aryl group or a heterocyclic group), an acylamido group, an amino group, a halogen atom, a hydroxy group, or an acyloxy group; and R.sub.1 and R.sub.

Abstract: A photographic material is described for making positive images by reversal processing, the material comprising a support and a silver halide Lippmann-emulsion layer the average silver halide grain-size of which is less than 100 nm wherein the grains have been chemically sensitized to fog so that a test portion of the emulsion when coated on a support at a coverage of silver halide corresponding to from about 3 g to about 7 g of silver nitrate per sq.m. gives a density between about 0.20 and about 0.70 upon development without exposure for 6 min at 20.degree. C in a developer of the composition:Hydroquinone: 16.5 gPotassium bromide: 1.7 gSodium salt of EDTA: 1.7 gPotassium metabisulphite: 40 g1-phenyl-5-mercaptotetrazole: 35 gSodium hydroxide and water to make: 1 liter at pH 11.

Abstract: A multi-layered color photographic light-sensitive material which comprises a support having thereon at least two light-sensitive silver halide emulsion layers which provide images having substantially different hues, with the light-sensitive material including 2-equivalent couplers and/or 4-equivalent anilinopyrazolone couplers and at least one of the light-sensitive silver halide emulsion layers or a colloidal layer of the light-sensitive material containing a hydroquinone derivative or a hydroquinone precursor substituted with a heterocyclic monothio group and an aliphatic monothio group, an aryl monothio group, an aliphatic oxy group, an aryloxy group or a heterocyclic oxy group and having a ballasting group containing 8 or more carbon atoms.

Abstract: A development method which comprises developing a silver halide photographic ligh-sensitive material in the presence of a compound represented by the following general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represent a hydrogen atom, alklyl group, alkenyl group, aralkyl group or aryl group, X represents an anion, and P is 1 or 2.

Abstract: A direct positive silver halide light-sensitive material capable of forming direct positive images comprising a support having coated thereon at least one internal image type silver halide emulsion layer, wherein at least one hydrophilic colloid layer contains a heterocyclic quaternary salt compound represented by formula (I) in an amount necessary to provide the silver halide photographic emulsion with a fogging function. ##STR1## wherein Z is an atomic group necessary for completing a 5- or 6-membered heterocyclic nucleus, R.sub.1 is an aliphatic group, R.sub.2 is a hydrazonoalkyl group, X.crclbar. is an anion, and n is 1 or 2.

Abstract: Oxa- and thiadiazole compounds substituted in the 2 and 5 positions with secondary amino groups are employed as photographic developing agents for exposed radiation-sensitive silver salts. The developing agents can be employed as components in developer compositions, as incorporated developing agents, and as developing agents in diffusion transfer processes.

Abstract: Stable nitroxyl radicals are useful as oxidants in photographic elements or film units.

Abstract: High edge effects and interimage effects are provided in a color-photographic material by the use of new DIR-compounds. These are of the formula ##STR1## wherein X represents together with the sulfur atom a development inhibiting group;Y represents --O--, ##STR2## methylene group which may be alkyl substituted or a methine group; Z represents a methylene or ethylene group which may be alkyl substituted, a methine group, a vinylene group, an o-phenylene group, a carbonyl group, an oxycarbonyl group or a carbonamide group;R.sup.1 and R.sup.2 represent aliphatic, araliphatic or aromatic groups, acyl, acyloxy, alkoxy, aryloxy, amino, halogen, cyano, thioether groups or arylsulfoxyl or alkylsulfoxyl or both R.sup.1 and R.sup.2 together complete an at least mono-unsaturated or aromatic ring.

Abstract: A light-sensitive silver halide photographic material comprising a support having thereon at least one hydrophilic colloid layer which contains a color-forming coupler having a nitrogen-containing residue releasable on reaction of the coupler with an oxidation product of a color developing agent and which contains a thiocarbonyl group (S.dbd.C<), a selenocarbonyl group (Se.dbd.C<) or a telluriumcarbonyl group (Te.dbd.C<), the nitrogen atom of the nitrogen-containing residue being attached to the carbon atom in the coupling position of the coupler.

Abstract: In a color photographic process wherein a color photographic material having at least one silver halide emulsion layer is developed after imagewise exposure in a color developer containing a primary aromatic amine color developing agent to form dye images, the intensification effect of the color images formed is increased with less formation of fog by employing silver iodobromide containing at least about 2 mole percent silver iodide as the silver halide of the silver halide emulsion and developing the silver halide emulsion layer in the presence of a cobalt (III) complex incorporated in the photographic material or a processing solution at temperatures of about 50.degree. C or higher.

Abstract: A covering power imaging heat developable and heat stabilizable photographic material comprising in reactive assocation (a) photographic silver salt, (b) a photographic silver salt developing agent, (c) an activating concentration of a certain development activator precursor and (d) a polymeric binder, enables an image to develop and be stabilized even though the photothermographic material contains no separate post-processing image stabilizer, and also enables silver image development efficiency of at least 90% when the material is heated to a temperature within the range of about 120.degree. to 200.degree. C. An image can be developed in this heat developable and heat stabilizable photographic material by merely heating the material after imagewise exposure to moderately elevated temperatures. Other addenda employed in heat developable materials can be employed in the described heat developable photographic materials.

Abstract: Heterocyclic N-(acylhydrazinophenyl)thioamide nucleating agents are disclosed as well as radiation-sensitive compositions and elements containing such nucleating agents in combination with silver halide grains capable of forming an internal latent image. The elements can be used to form direct-positive photographic images. Dye image transfer photographic elements are specifically contemplated.

Abstract: A silver halide photographic light-sensitive material comprising a hydrophilic organic colloid layer containing a photographic additive dispersed therein using as a solvent a benzoic acid ester which has a boiling point of greater than 250.degree. C at atmospheric pressure, which is soluble in water in a proportion of less than about 10% by weight, and which dissolves water in a proportion of less than about 5% by weight. The benzoic acid ester does not have any harmful influence on the human body and does not cause environmental pollution.

Abstract: A heat developable light-sensitive material comprising a support having thereon at least one light-sensitive layer containing (1) an oxidation-reduction image-forming combination of (a) a silver salt oxidizing agent and (b) a reducing agent and (2) a catalytic amount of a light-sensitive silver halide or a compound capable of reacting with the silver salt (a) to form a light-sensitive silver halide, the light-sensitive layer further containing (3) at least one specific phthalazinone compound. The development of the above light-sensitive material is carried out simply by heating the material at a temperature of about 90.degree. to 180.degree. C. for 1 to 60 seconds after imagewise exposure. An image of black tone can be obtained without contaminating the developing machine.

Abstract: The present invention discloses a multi-layer photosensitive material for color photography in which a compound capable of reacting with an oxidation product of a developing agent to release a substance promoting bleaching of developed silver at the bleaching or blixing step after the development treatment is incorporated into at least one layer constituting said photosensitive material.

Abstract: A method is described of developing a photographic silver halide element containing developable silver halide by development in the presence of a development accelerator which is a compound corresponding to the following general formula and containing in its molecule at least one thioether sulphur atom linked to two carbon atoms: ##STR1## WHEREIN: R is hydrogen, hydroxy, hydroxyalkyl, alkoxy, alkylthio or alkylamino,Alk is en alkylene group which may be interrupted by --O--, --S--, or --N(Q)-- wherein Q is hydrogen or a C.sub.1 -C.sub.

Abstract: A light-sensitive silver halide photographic element containing an inorganic bismuth compound in the emulsion layer and/or constitutive layer and a method for developing said element after imagewise exposure is described.

Abstract: In one embodiment, the present invention relates to novel heterocyclic compounds as represented in the following formula ##STR1## wherein R and R' each are hydrogen or alkyl, Y is .dbd.O or .dbd.NH and n is a positive integer from 1 to 7.In another embodiment, the present invention is directed to the use of the above-denoted class of heterocyclic compounds as photographic silver halide developing agents and to photographic processes, products and compositions employing the same.