Abstract: A silver halide emulsion formed of high silver chloride particles, the high silver chloride particles having a continuous outermost layer containing at least 30 mol % of silver bromide, the high silver chloride particles having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol %, wherein the outermost layer has a center portion, the center portion being limited to a region within 10% to 90% of the volume of the outermost layer, the center portion having present therein a compound of a metal from column VIII of the periodic table.

Abstract: A developer for a photopolymerizable presensitized plate for use in making a lithographic printing plate characterized in that it comprises an alkali silicate and a nonionic compound represented by the following general formula (I), it has a molar ratio: SiO2/M2O (wherein M represents an alkali metal or an ammonium group) ranging from 0.75 to 4.0, a pH value ranging from 11.5 to 12.8 and a conductivity ranging from 3 to 30 mS/cm: A—W  (I) wherein A represents a hydrophobic organic group whose logP as determined for A—H is not less than 1.5 and W represents a nonionic hydrophilic organic group whose logP as determined for W—H is less than 1.

Abstract: A photosensitive media cartridge includes an ambient condition sensor mounted in the cartridge for sensing ambient conditions in the cartridge. When the cartridge is positioned at a media transfer position on an image-forming device that permits the conveyance of media from the cartridge to the image-forming device, image development or printing on the media in the image-forming device is controlled based on the sensed ambient conditions in the cartridge. The ambient condition sensor includes a cover layer and a conductive layer, wherein a rate of response to ambient conditions of the cover layer matches rate of response to ambient conditions of the photosensitive media to be developed. As a further option, the media itself can include a conductive layer so that the media can be the sensor.

Abstract: A method of providing an image in an imagewise exposed photographic silver halide material comprising at least one silver halide emulsion layer, which method comprises developing the silver halide and fixing the remaining silver halide by contacting it with a molten composition comprising a silver halide complexing agent which is present in sufficient amount to render the silver halide substantially clear. The photographic silver halide material may comprise at least one silver halide emulsion layer on a support wherein the material also comprises a layer of a composition comprising a silver halide complexing agent which is liquefiable by heat and which, when molten, is in reactive association with the silver halide. The image formed may be scanned to produce an electronic rendition of the image.

Abstract: A silver halide emulsion chemically sensitized by at least one compound having a bond of anionic chalcogenide to gold(I) cation and capable of releasing a gold-chalcogen anion species and a method for chemically sensitizing a silver halide emulsion, comprising adding at least one compound having a bond of anionic chalcogenide to gold(I) cation and capable of releasing a gold-chalcogen anion species are disclosed.

Abstract: The invention relates to a method for processing an exposed color reversal photographic film. This method comprises the step of circulating the exposed film in a fixing bath, in and then a final washing zone comprises at least one washing bath. Each washing bath of this zone comprising a buffer prepared from a weak acid and its conjugated base, with a conjugated base concentration more than 1 g/l, said buffer being chosen to maintain the pH between 4.5 and 6. The method comprises then the step of collecting the contents of the washing baths of this zone and the passage of said contents through a nanofiltration device comprising a membrane, whose cut-off threshold is more than the molar mass of the weak acid and the conjugated base making up the buffer, to give a permeate that is recycled in the final washing zone.

Abstract: A method of processing a silver halide color photographic material comprises the steps of color-developing an image-wise exposed silver halide color photographic material and subjecting the developed material to desilvering in a processing bath having a fixing function and containing a thiosulfate compound and the following compound or analogue thereof in a molar ratio of 1/0.05 to 1/0.30. In this process, the fixing speed is extremely high even when the replenishing rate is low and the processed photosensitive material has an excellent resistance to fading by light.

Abstract: The invention provides a method for calculating the fractional exposure of black and white photographic material, the developed material being processed in a processing system having a fixing stage and an in-line silver recovery unit associated with the fixing stage, comprising the steps of determining the mass of silver recovered by the in-line silver recovery unit during a period of operation of the method, calculating a first estimate for the fractional exposure of the photographic material in dependence on the determined mass of silver and, using said first estimate as an input to an iterative process, to calculate a subsequent estimate for the fractional exposure (&thgr;) of the photographic material. The invention provides a simple and accurate method and system for calculating the fractional exposure of photographic material without requiring the use of a silver sensor.

Abstract: A processing composition for a silver halide photographic material, which comprises at least one compound selected from the group consisting of compounds represented by the following general formulae (I) and (II):

Abstract: Concentrated and working strength photographic color developing compositions are stabilized with the inclusion of a sulfur compound as a preservative for a color developing agent. The preservative can be represented by one of the following Structures I, II, III, and IV: M1S—R—CH(NH2)—COOM2   (I) M1S—R1—COOM2   (II) R2—S—S—R2   (III) R3HN—R4—SM1   (IV) wherein R is a divalent aliphatic linking group having at least 1 carbon atom in the chain, R1 is phenylene or an unsubstituted alkylene having 1 or 2 carbon atoms, R2 is a monovalent aliphatic group having at least 2 carbon atoms and comprising a —CH(NHR3)—COOM2 or —(C1-C3)alkylene-CH(NHR3)—COOM2 group, R3 is hydrogen, an alkyl group having 1 to 3 carbon atoms or phenyl, R4 is an alkylene group, a cyclohexylene group, or a phenylene group, and M1 and M2 are independently hydrogen, an alkali metal or ammonium ion or methyl group.

Abstract: A process for the preparation of a radiation-sensitive silver halide emulsion comprised of high bromide tabular silver halide grains is described, the process comprising: (a) providing in a stirred reaction vessel a dispersing medium and high bromide silver halide tabular seed grains, the seed grains comprising at least 5 mole % of the final emulsion silver, and (b) precipitating a silver halide shell which comprises at least 5 mole % of the final emulsion silver onto the seed grains by introducing at least a silver salt solution into the dispersing medium at a rate such that the normalized shell molar addition rate, Rs, is above 1.

Abstract: A process for purifying p-phenylenediamine color developers in their free-base form. The process includes subjecting a solution containing p-phenylenediamine-type free base color developer to short path distillation which includes at least one of falling film evaporator, thin film evaporator, wiped film evaporator, or short-path evaporator. Another aspect is a method for preparing an acid salt from a p-phenylenediamine free base color developer. The method includes the steps of: a) dissolving a purified p-phenylenediamine free base derived from the short path distillation process in an organic solvent; b) contacting the dissolved free base distillate with an appropriate mineral acid; and c) crystallizing the color developer in the acid salt form.

Abstract: A method for processing a silver halide photographic material comprises the steps of loading the material into a chamber adapted to hold the material therein, introducing a metered amount of a first processing solution into the chamber, processing the photographic material with the first processing solution, introducing a metered amount of a second processing solution which is other than a second part of the first processing solution into the chamber without removing the first processing solution so that at least part of the total volume of the second processing solution is provided by the first processing solution and processing the photographic material with the second processing solution, the total volume of solution for each processing stage being spread over the whole area of the photographic material in a repetitive manner to enable uniform processing.

Abstract: The present invention relates to a material and a method for treating of photographic effluents in order to eliminate microorganisms and pollutant by-products so as to control bacterial growth and thereby obtain effluents that comply with regulatory requirements. The method for preparing an oxidizing material according to the invention comprises the dispersion in colloidal form of a metal or metal compound in an aqueous solution of an inorganic aluminosilicate polymer, said aluminosilicate being able to form an inorganic gel, and said metal or metal compound being able to cause the oxidation of oxidizable products and (or) micro-organisms to be eliminated, followed by the addition of a base to cause said aluminosilicate to gel. The metal is preferably silver in a powder form that is able to form a colloid when it is dispersed. The oxidizing material of the invention is efficient especially for the treatment of photographic baths, in particular wash baths placed after the fixing step.

Abstract: The present invention provides a processing composition for a silver halide color photographic photosensitive material. The processing composition has excellent functions of reducing stain caused by residual dyes in a photosensitive material and of making no segregated deposit even in low temperature storage of the processing composition. The processing composition of the invention contains a bis-triazinylarylenediamine derivative and a diaminostilbene derivative. The invention also provides an image-formation process using the processing composition of the invention.

Abstract: A silver halide color photographic light-sensitive material containing at least one kind of a compound represented by formula (I): Where each of R1, R3 and R4 independently represents a hydrogen atom or a substituent, R2 represents a substituent, a represents an integer of 0 to 4, wherein if a is not less than 2, a plurality of R2's may be the same or different, and if a is 1, R2 is selected from substituents having a &sgr;p value of 0 to 0.53, and if a is 2 to 4, R2 is selected from substituents having a &sgr;p value of 0 to 0.53 in total, Time represents a group which releases —S—R5 after being eliminated as (Time)t-S—R5, t is 0 or 1, and R5 represents an organic group which is bonded with S by its sp3 carbon.

Abstract: There is disclosed a silver halide photographic emulsion comprising silver halide grains, wherein 50% or more of the projected area of the silver halide grains to be contained is occupied by tabular grains having an aspect ratio of 2 or more and a grain thickness of 0.2 &mgr;m or less, with the tabular grains each having a phase with the content of silver bromide being 10% or more, and wherein in the phase, the tabular grains each contain a metal complex dopant in an amount necessary to increase the density of a dislocation. This emulsion produces high contrast and better granularity while it has high sensitivity. Further, there is also disclosed a silver halide photographic emulsion, wherein the average equivalent-circle diameter of the total tabular grains among the silver halide grains contained is 2.0 to 4.0 &mgr;m, and the tabular grains contain at least one metal complex having, as a ligand, a heterocyclic compound in a number more than half of the coordination number of the metal atom.

Abstract: The present invention relates to a method for preparing a silver halide photographic emulsion, comprising the steps of a) providing a nucleation medium comprising an aqueous composition based on a hydrophilic colloid and a non-ionic antifoaming agent; b) precipitating silver halide nuclei in said nucleation medium; c) growing said silver halide nuclei to form a silver halide photographic emulsion; and d) removing the non-ionic antifoaming agent from the nucleation medium by contacting the silver halide photographic emulsion resulting from step c) with a material that has surface lipophilic functions.

Abstract: A processing composition for silver halide photographic light-sensitive materials, comprises a bis[2,6-diaminotriazin-4-yl]arylenediamine derivative having at least one of a sulfonic acid group, a carboxylic group and a hydroxyl group within the molecule. This processing composition can be applied to a color developer, a bleaching agent, a fixing agent, a bleach-fixing agent and a stabilizing agent and also to a processing agent in a concentration on use, a concentrated processing agent and a solid processing agent.

Abstract: A process for producing a silver halide emulsion is disclosed, which comprises disposing a mixer equipped with a first channel and a second channel brought into partial contact therewith; and allowing a silver salt solution (Fluid 1) and a halide solution (Fluid 2) to pass through said first channel and said second channel, respectively, to thin said two fluids into lamellae having an open interface therebetween and having a thickness of 1 to 500 &mgr;m in a normal line direction on the contact interface, thereby inducing diffusion, transfer and reaction of silver ions and halogen ions between said two thin layers, and thus forming silver halide grains continuously.