Abstract: A method of processing a light-sensitive silver halide photographic material is disclosed. The method comprises a processing steps of developing, fixing and a washing or stabilizing, wherein a replenishing solution for the washing or the stabilizing step is an amount of not more than 3 liters per square meter of the light-sensitive material. The photographic material comprises a support, and a hydrophilic colloidal layer on each of the both side of the support, wherein either one of the hydrophilic colloidal layers contains a dye represented by a specific chemical formula.

Abstract: Photographic coupler compositions comprise (a) a pyrazolone magenta dye-forming coupler compound, and (b) a sulfoxide compound in an amount sufficient to reduce continued coupling of the coupler compound during the bleach step of a color photographic process. The sulfoxide compound is of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of straight and branched chain alkyl groups, alkenyl groups and alkylene groups; straight and branched chain alkyl groups, alkenyl groups and alkylene groups containing at least one substituent selected from the group consisting of alkoxy, aryloxy, aryl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, carbonamido and carbamoyl groups and halogen atoms; a phenyl group; and a phenyl group containing at least one substituent selected from the group consisting of alkyl, alkoxy, aryloxy, aryl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, carbonamido and carbamoyl groups and halogen atoms. Additionally, R.sub.1 and R.sub.

Abstract: There is disclosed a silver halide color photographic material having at least one silver halide emulsion layer on a base, which comprises in the silver halide emulsion layer a magenta coupler, an image-dye stabilizer, and a high-boiling organic solvent of which the weight ratio to the coupler is 3.0 or over. The disclosure as described provides a color photographic material being excellent in color reproduction and having improved light-fastness of magenta color image with good balance from high density part to low density part.

Abstract: A bicyclo[m.n.0]alkane-1-ylcarbonylacetamide-based yellow dye-forming coupler wherein m represents an integer of 2 to 5, n represents an integer of 1 to 3, the sum of m and n is an integer of 3 to 7, and 0 represents zero.

Abstract: There is disclosed a silver halide color photographic material having at least one silver halide emulsion layer, wherein the silver halide emulsion layer comprises a magenta coupler and a compound that can break the aggregation of azomethine dye formed from said magenta coupler and the oxdized product of the color-developing agent. The silver halide color photographic material exhibits an excellent effect that the light-fastness of image dye and the color reproduction are good.

Abstract: There is disclosed a silver halide color photographic material having at least one silver halide emulsion layer on a base, which comprises in said silver halide emulsion layer a dispersion including at least one yellow coupler represented by the following formula (1) or (2) and at least one water-insoluble homopolymer or copolymer: ##STR1## wherein X.sub.1 and X.sub.2 each represent an alkyl group, an aryl group, or a heterocyclic group, X.sub.3 represents an organic residue required to form a nitrogen-containing heterocyclic group together with the >N-, Y represents an aryl group or a heterocyclic group, and Z represents a group capable of being released upon a coupling reaction of the coupler represented by said formula with the oxidized product of a developing agent.

Abstract: A silver halide color photographic material comprising a support having thereon one or more hydrophilic colloid layers, at least one layer which is a light-sensitive silver halide emulsion layer containing in the same layer a color coupler selected from a yellow coupler and a cyan coupler and at least one anti-fading agent represented by formula (I): ##STR1## The novel anti-fading agent effectively prevents yellow and cyan dye images from fading or discoloration, and does not adversely affect other photographic properties.

Abstract: A silver halide color photographic material containing one or more imidazotriazole cyan couplers each having an electron attracting group with a .sigma.p of 0.35 or more in at least one layer on the support. The material provides a cyan color image having a sharp light absorption characteristic absorbing light having a relatively long wavelength falling within a narrow wavelength range. The imidazotriazole cyan coupler is of the following structural formula (I): ##STR1## where R.sub.1 represents a hydrogen atom or a substituent; R.sub.2 represents an electron attracting group having a Hammett's constant value .sigma.p of 0.35 or ore; X represents a hydrogen atom or a group released by coupling with an oxidation product of an aromatic primary amine color developing agent; and R.sub.1 or R.sub.2 may also be a divalent group forming a dimer or higher polymer, or they each may be bonded to a polymer chain to form a homopolymer or copolymer.

Abstract: A positive photosensitive polyimide resin composition which comprises 100 parts by weight of an organic solvent-soluble polyimide resin and 1-100 parts by weight of an .omicron.-quinonediazide compound, said polyimide resin being composed of the repeating units represented by formulas [I] and [II] below ##STR1## (where R.sub.1 is a divalent organic group to constitute a diamine which has one or more groups of at least one kind selected from the group consisting of phenolic hydroxyl group, carboxyl group, thiophenol group, and sulfonic group; R.sub.3 is a divalent organic group having no phenolic hydroxyl group, carboxyl group, thiophenol group, and sulfonic group; and R.sub.2 and R.sub.4 each are a tetravalent organic group constituting a-tetracarboxylic acid and a derivative thereof when R.sub.1 has one or more groups of at least one kind selected from the group consisting of carboxyl group and sulfonic group and has no phenolic hydroxyl group and thiophenol group, or R.sub.2 and R.sub.

Abstract: A silver halide color photographic material comprising a reflective support having provided therein a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a red-sensitive silver halide emulsion layer and plural light-insensitive layers, wherein the blue-sensitive silver halide emulsion layer contains a monodisperse silver halide emulsion and a yellow coupler represented by formula (I) defined below, and at least one light-insensitive layer which is positioned farther from the reflective support than the blue-sensitive silver halide emulsion layer is a hydrophilic colloid layer containing at least one hydrophobic compound represented by formula (II) defined below, and a relative refractive index of an organic phase containing the hydrophobic compound with the exception of a volatile organic solvent and an amphipathic solute to a hydrophilic polymer thin film which forms the light-insensitive layer is in a range from 0.9875 to 1.

Abstract: A silver halide color photographic light-sensitive material is disclosed, which gives a color image excellent in the light-fastness and color reproducibility. The light-sensitive material comprises a support and a silver halide emulsion layer, and the emulsion layer contains a yellow dye-forming coupler represented by Formula Y-I and a compound represented by Formula I: ##STR1## wherein R.sup.1 is an alkyl group or a cycloalkyl group; R.sup.2 is an alkyl group, cycloalkyl group, an acyl group or an aryl group; R.sup.3 is a substituent; n is 0 or 1; X.sup.1 is a substituent capable of splitting off upon coupling reaction with the oxidation product of a color developing agent; and Y.sup.1 is an organic group, ##STR2## wherein R.sub.A and R.sub.B are independently an alkyl group, a cycloalkyl group or an alkenyl group; and R.sub.C and R.sub.D are independently a hydrogen atom, an alkyl group, a cycloalkyl group or an alkenyl group.

Abstract: An acylacetamide-type yellow dye-forming coupler. The acyl group of the coupler is a bicyclo[1.1.1]pentane-1-carbonyl group, a bicyclo[2.1.1]hexane-1-carbonyl group, a bicyclo[2.2.1.]heptane-1-carbonyl group, a bicyclo[2.2.2]octane-1-carbonyl group, a tricyclo[3.1.1.0.sup.3,6 ]heptane-6-carbonyl group, a tricyclo[3.3.0.0.sup.3,7 ]octane-1-carbonyl group, or a tricyclo[3.3.1.0.sup.3,7 ]nonane-3-carbonyl group.

Abstract: The addition of simple merocyanine spectral sensitizing dyes to silver halide photothermographic emulsions improves the stability of the emulsion during storage before heat processing.

Abstract: This invention describes a process of coprecipitating a photographic material such as a dye-forming coupler inside a base ionizable polymeric particle. Preparation of such a dispersion is performed by providing a first flow comprising a solution of a surfactant in water containing a polymer ionizable by base, providing a second flow comprising a water miscible solvent, base, water, and the photographic material, then mixing the said first and said second flow and immediately neutralizing the mixed flow to precipitate the photographic material inside the polymer particles forming a fine particle colloidal dispersion of the photographic material. The polymer dispersions of the invention are characterized by high photographic activity and high dye-stability in some cases.

Abstract: Light-sensitive silver halide color photographic material, having at least one light-sensitive silver halide emulsion layer on a support, wherein at least one of said emulsion layer contains light-sensitive silver halide grains having outer surfaces principally comprised of {100} face, and a magenta dye image forming coupler represented by Formula (I) shown below: ##STR1## wherein Z represents a group of nonmetal atom necessary for formation of a nitrogen-containing hetero ring; said ring formed by Z may have a substituent; X represents a hydrogen atom or a substituent eliminable by the reaction with an oxidant in a color developing agent; and R represents a hydrogen atom or a substituent.which can porovide a light-sensitive silver halide color photographic material having high sensitivity, being low in fogs, and having improved color reproducibility.

Abstract: There is disclosed a silver halide color photographic light-sensitive material capable of providing a color image which does not discolor for a long period of time and having a high preservation property. The light-sensitive material contains a novel anti-fading agent represented by following Formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, or an aliphatic oxy group; R.sub.2 and R.sub.3 may be the same or different and each represent an aliphatic group, an aromatic group, and a heterocyclic group; R.sub.4 represents a substituent; R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 each represent a hydrogen atom and a substituent; R.sub.2 and R.sub.3, R.sub.3 and R.sub.4, and R.sub.4 and R.sub.2 may be combined with each other to form a 5- to 8-membered ring, and a dimer or other polymer may be formed with R.sub.1, R.sub.2, R.sub.3 and R.sub.4 ; R.sub.5 and R.sub.6, R.sub.6 and R.sub.7, R.sub.7 and R.sub.8, and R.sub.8 and R.sub.

Abstract: Phase-change type, reversible optical information recording medium, being possible for recording, reproducing, erasing, and rewriting of information, by use of a laser beam. This invention consists of recording thin film of ternary elements, for example, containing Ge, Te, Sb/or Bi or quaternary elements containing the fourth element of Se with which a part of Te is replaced, which is established on such surface-flat substrates as glass or plastics. In this case, the component ratio of Te and Se is selected not to be excess for other elements, such as Ge, Sb/or Bi so as to be fixed as stable compounds of stoichiometric compositions of GeTe, Sb.sub.2 Te.sub.3 /or Bi.sub.2 Te.sub.3, or GeSe, Sb.sub.2 Se.sub.3 /Bi.sub.2 Se.sub.3 when crystallized. Strictly speaking, a concentration of each component is selected to have proper ratio of the number of atomes each other so as to represent whole composition as the sum of each component.

Abstract: A process for the continuous treatment of silver halide color photographic light-sensitive materials comprising the developing of the material while supplying a replenisher to a developing bath, where the amount of the replenisher is 900 m or less per m.sup.2 of the light-sensitive materials, and an average ratio of silver iodide to the whole silver halide included in the light-sensitive material is 8 mol % or less.

Abstract: A developer liquid for image-wise exposed radiation sensitive compositions comprises ethyl hexyl sulphate, a surfactant, and alkaline material such that the pH is al least 12 and preferably at least 13.5. The developer liquid may additionally include a water soluble carboxylic acid salt such as sodium octanoate and the sodium salt of ethylene diamine tetra acetic acid. Such developer liquids can be formulated for use with both positive-working and negative-working compositions.

Abstract: A rewritable optical information recording medium of phase-change type wherein the recording, erasing, reproduction and rewriting of information are effected by irradiation of a high density energy flux such as laser beams. With the aim of obtaining a high erasing ratio in overwriting using a single laser beam, a constitution of medium has been devised whereby the same temperature-rise profile can be obtained for both the recorded mark part and the unrecorded (erased) part of the recording film. For example, by selecting the film thickness of each layer such that the optical absorbance at the wavelength of irradiation light source is the same in both the recorded part and the unrecorded part, an erasing ratio of -30 dB or more has been attained.