Abstract: A silver halide color photographic light-sensitive material which comprises a support having thereon photographic constituting layers comprising blue, green and red sensitive silver halide emulsion layers, and a light-insensitive hydrophilic colloidal layer, wherein the photographic constituting layers contain, in combination or separately, at least one compound represented by the following formula(1): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 represent specific groups, and L.sup.1, L.sup.2, and L.sup.3 each independently represents methine; andat least one compound selected from the group consisting of the compounds represented by the following formulas (2) and (3):A.sup.1 .dbd.L--Q (2)A.sup.1 .dbd.L--A.sup.2 (3)wherein A.sup.1 or A.sup.2 each independently represents an acidic nucleus, Q represents aryl or a heterocyclic ring, and L represents methine. The light-insensitive hydrophlic colloidal layer exhibits antihalation effect.

Abstract: A silver halide photographic material comprises a support, at least one silver halide emulsion layer and at least one non-light-sensitive hydrophilic colloidal layer. The silver halide emulsion layer or the hydrophilic colloidal layer contains a colorant having the absorption maximum wavelength within the infrared region of 700 to 1,100 nm. The colorant is in the form of solid particles dispersed in the silver halide emulsion layer or in the hydrophilic colloidal layer. The solid particles cannot substantially be removed by a processing solution of the silver halide photographic material. An image forming process employing the silver halide photographic material is also disclosed.

Abstract: An image formation method comprising imagewise exposing a silver halide light-sensitive material comprising a support having thereon a light-sensitive silver halide, a binder, a slightly water soluble basic metal compound, and a dye composition which is decolorized or discolored on heat development; contacting the surface of the light-sensitive material with a sheet coated with a binder and a compound which forms a complex with a metal ion constituting the basic metal compound and heating them in the presence of a reducing agent and water after or during the imagewise exposing; and peeling off the sheet to obtain an image on at least the light-sensitive material and the sheet, wherein the dye composition comprises an oil-soluble dye formed by a leuco dye and a color developer.

Abstract: A silver halide photographic material comprises a support, at least one silver halide emulsion layer and at least one non-light-sensitive hydrophilic colloidal layer. The silver halide emulsion layer or the hydrophilic colloidal layer contains a colorant having the absorption maximum wavelength within the infrared region of 700 to 1,100 nm. The colorant is in the form of solid particles dispersed in the silver halide emulsion layer or in the hydrophilic colloidal layer. The solid particles cannot substantially be removed by a processing solution of the silver halide photographic material. An image forming process employing the silver halide photographic material is also disclosed.

Abstract: Image forming method is disclosed using a light-sensitive material which comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound. The light-sensitive material of the present invention further contains a polymerization inhibitor releasing (PIR) compound. The polymerization inhibitor releasing compound has a function of releasing a polymerization inhibitor when the compound is heated or reacted with a base. The silver halide, the reducing agent, the polymerizable compound and the polymerization inhibitor releasing compound are preferably contained in microcapsules which are dispersed in the light-sensitive layer.

Abstract: A silver halide photographic material having a hydrophilic colloid layer containing a dispersion of fine solid grains of at least one compound represented by formula (1) ##STR1## wherein R represents an alkyl group, an aryl group, an amino group, an alkoxy group, an aryloxy group or a heterocyclic group;L.sub.1, L.sub.2 and L.sub.3 each represents a methine group;Y represents a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom;R and Y may be bonded to each other to form a ring; andn represents an integer of from 0 to 2;provided that R, Y, L.sub.1, L.sub.2 and L.sub.3 do not have a group having an ionizable proton or its salt.

Abstract: A method for forming an image in a silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, which comprises imagewise exposing the silver halide color photographic material, color developing the exposed material and then subjecting the developed material to a desilverization treatment, wherein the desilverization treatment is carried out using a processing solution having a bleaching ability and containing at least one of an amidine compound or a bisguanidine compound and a ferric salt of an organic acid, and also a method for processing a silver halide photographic material wherein processing is additionally carried out in the presence of a stilbene fluorescent brightener using a desilverization bath containing at least one of an amidine compound or a bisguanidine compound.

Abstract: A silver halide photographic material is described having a hydrophobic polymer layer which is not substantially swollen with processing solutions on one surface of a support and having at least one light-sensitive silver halide emulsion layer on the other surface of the support, and the material has a hydrophilic colloid layer containing a dispersion of fine solid grains of a dye having an absorption peak wavelength of from 600 nm to 1200 nm between the support and the emulsion layer. The material is exposed with a near infrared ray. The drying property of the processed material is improved, and the material is hardly curled during storage under varying conditions.

Abstract: A light-sensitive material comprises a support and a light-sensitive layer. The light-sensitive layer contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a base precursor. According to the present invention, the light-sensitive layer further contains a urethane polymer having an amino or imino group. The urethane polymer is dissolved in the ethylenically unsaturated polymerizable compound. The polymer has a molecular weight of not less than 2,000. The silver halide, the reducing agent, the polymerizable compound, the base precursor and the urethane polymer are preferably contained in light-sensitive microcapsules which are dispersed in the light-sensitive layer.

Abstract: A novel color image recording method is provided, which comprises exposing to light a light-sensitive material obtained by dispersing a composition containing at least a photopolymerization initiator, a color image-forming substance and a polymerizable compound in a hydrophilic binder and then coating said dispersion on a support, subjecting said polymerizable compound in the exposed portions to polymerization, and then (a) eluting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions with an alkaline aqueous solution or (b) subjecting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions to chemical change so that it is discolored, thereby forming dye images.

Abstract: A heat developable light-sensitive material comprising a support having thereon at least one layer containing a base precursor, a lgiht-sensitive silver halide, a binder, and a dye-providing substance which produces or releases a diffusible dye in correspondence or countercorrespondence to the reduction of the light-sensitive silver halide to silver at an elevated temperature, the base precursor comprising a salt of a carboxylic acid and a diacidic, triacidic or tetraacidic organic base comprising a hydrocarbon group or a heterocyclic group substituted with 2 to 4 amidine groups represents by formula (I-2): ##STR1## wherein R.sup.15, R.sup.16 and R.sup.17 are as defined in the specification. The heat developable light-sensitive material has excellent age preservability and provides a high sensitivity and low-fog image.

Abstract: A base precursor in the form of a salt of an organic base with a carboxylic acid is disclosed. The organic base is a diacidic to tetraacidic base which is composed of two to four guanidine moieties and at least one linking group for the guanidine moities. The organic base is such a hydrophilic compound that the number of carbon atoms contained in the organic base is not more than six times the number of the guanidine moieties. The linking group is a residue of a hydrocarbon or a heterocyclic ring. The guanidine moiety corresponds to an atomic group formed by removing one or two hydrogen atoms from a compound having the following formula (I): ##STR1## where each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently is hydrogen, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aralkyl group, an aryl group or a heterocyclic group, each of which may have one or more substituent groups, and any two of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.

Abstract: A light-sensitive microcapsule comprises a core material containing a silver halide and an ethylenically unsaturated polymerizable compound and a shell containing a melamine derivative-aldehyde resin which encloses the core material. The melamine derivative-aldehyde resin forming the shell is produced from formaldehyde and a melamine compound which contains a specifically selected melamine derivative in an amount of at least 10 wt. %. A light-sensitive material prepared using the microcapsule is also disclosed.

Abstract: A photographic silver halide photosensitive material is provided comprising a substantially water-insoluble basic metal compound and a water-soluble salt of the same metal ion as the basic metal compound which inhibits dissolution of the basic metal compound. An image is formed by combining the photosensitive material with a complexing compound in the presence of water and causing complexing reaction of the basic metal compound and the complexing compound to occur, increasing the pH of the system.

Abstract: A color image is formed by subjecting a silver halide photosensitive material comprising at least a photosensitive silver halide, a two equivalent coupler, a binder, and a substantially water-insoluble basic metal compound on a support, to development with a processing solution comprising a complexing compound capable of complexing reaction with the metal in ionic form of said substantially water-insoluble basic metal compound in the presence of water to release a base.

Abstract: A color image is formed in an image forming reaction system comprising a photographic heat-developable silver halide light-sensitive material by reacting a difficultly soluble metal compound, for example, calcium carbonate with a compound capable of water-mediated complexing reaction with the metal ion of the difficultly soluble metal compound and having an organic base, for example, guanidine oxalate in the presence of water to increase the pH of the system.

Abstract: Alkali is generated from two neutral parts by reacting a complexing agent such as sodium picolinate in one part with a slightly water-soluble metal compound such as zinc oxide in the other part in the presence of water.

Abstract: A heat developable light-sensitive material comprising a support having thereon at least one light-sensitive layer wherein at least one layer comprises a compound represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group each of which may be substituted or unsubstituted; a carboxy group or a salt thereof; R.sub.3 and R.sub.

Abstract: A heat developable light-sensitive material containing a novel base precursor (I), which is stable during storage and rapidly decomposes to release a basic component upon heating higher than a certain temperature, has excellent storability and provides an image having a good image quality, i.e., a low fog density and a high image density within a short period of developing time.

Abstract: A silver halide photographic material is disclosed, which comprises a transparent support having thereon a dye layer, a hydrophobic polymer layer and at least one light-sensitive silver halide emulsion layer, wherein the dye layer containing one or more specified dyes dispersed in the form of fine solid particles is provided between the light-sensitive silver halide emulsion layer and the support, the hydrophilic colloid coating weight of the dye layer is 0.5 g/m.sup.2 or less, and a hydrophobic polymer layer is provided between the dye layer and the support.