Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.

Abstract: Acid can be generated by exposing a superacid precursor to actinic radiation effective to generate superacid from the superacid precursor and heating the superacid in admixture with a secondary acid generator capable of undergoing thermal decomposition to produce a secondary acid. The superacid catalyzes decomposition of the secondary acid generator, thus increasing the quantity of strong acid present in the medium. The resultant secondary acid can be used to effect a color change in an acid-sensitive material, so providing an imaging process.

Abstract: Reduction of mottle and other surface anomalies in photothermographic and thermographic elements is reduced by the incorporation of a fluorinated polymer containing at least two different groups within the polymer chain derived from reactive monomers, the groups being: a fluorinated, ethylenically unsaturated monomer; and a polar, ethylenically unsaturated monomer.

Abstract: Sulfonyl hydrazides are used as developers in phothothermographic and thermographic elements. The sulfonyl hydrazides have the formula:R.sup.1 --CO--NHNH--SO.sub.2 --R.sup.2wherein R.sup.1 and R.sup.

Abstract: An aqueous-developable photographic color diffusion transfer element comprising one and only one dimensionally stable support and one or more layers comprising radiation sensitive silver halide, thermal solvent for facilitating the thermal diffusion of dyes through a hydrophilic binder, a dye-releasing coupler, a dye-receiving layer intermediate said support and dye-releasing coupler containing layers, a stripping layer intermediate said dye-receiving layer and any layers containing silver halide or dye-releasing coupler, and hydrophilic binder, wherein said dye is heat diffusible in said binder and thermal solvent, wherein said dye-releasing coupler is of the structureCp--L--DyewhereCp is a coupler radical substituted in the coupling position with a divalent linking group, L;Dye is a dye radical exhibiting selective absorption in the visible spectrum; and where said --L--Dye group couples off upon reaction of said coupler radical with the oxidation product of a primary amine developing agent, and such that s

Abstract: A new type of thermal imaging element containing a thermally degradable polymer and a radiation to heat converting substance is disclosed. The invention further comprises several methods for the formation of a heat mode image after image-wise exposure of the thermal imaging element to intense laser radiation.

Abstract: A heat-developable color light-sensitive material is described, which comprises a light-sensitive silver halide, a binder, a dye-donating compound and at least one compound represented by the following formula (I) on a support: ##STR1## wherein R.sub.1 represents an alkyl group having from 1 to 30 carbon atoms, an alkenyl group having from 2 to 30 carbon atoms, a cycloalkyl group having from 3 to 30 carbon atoms, or an aryl group having from 6 to 36 carbon atoms; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each independently represents a hydrogen atom, an alkyl group having from 1 to 30 carbon atoms, or an alkenyl group having from 2 to 30 carbon atoms; m represents an integer of from 0 to 10; and n represents 0 or 1; with the proviso that, when m is an integer of from 1 to 10, n is 0; when n is 1, m is 0; when m is an integer of from 2 to 10, the plurality of R.sub.2 groups may be the same or different, and the plurality of R.sub.3 groups may be the same or different; R.sub.1 and R.sub.2, R.sub.2 and R.sub.

Abstract: A process is provided for forming an image involving a photosensitive element comprising a photopolymerisable monomer and a reducible metal salt, preferably silver behenate, and a donor element containing a reducing agent. After lamination to a cover sheet, photopolymerisation and delamination, the image density is built up by lamination to the donor element, transfer of reducing agent and peeling-apart, possibly followed by heating the photosensitive element.

Abstract: Trityl hydrazides and formyl-phenyl hydrazines are useful as co-developers with hindered phenols in phothothermographic and thermographic elements. These co-developers have the formula:R.sup.1 --(C.dbd.O).sub.n --NHNH--R.sup.2R.sup.1 represents hydrogen and R.sup.2 represents an aryl or substituted aryl group; or,R.sup.1 represents hydrogen, alkyl and alkenyl groups of up to 20 carbon atoms; alkoxy, thioalkoxy, or amido groups of up to 20 carbon atoms; aryl, alkaryl, or aralkyl groups of up to 20 carbon atoms; aryloxy, thioaryloxy, or anilino groups of up to 20 carbon atoms; aliphatic or aromatic heterocyclic ring groups containing up to 6 ring atoms; carbocyclic ring groups comprising up to 6 ring carbon atoms; or fused ring or bridging groups comprising up to 14 ring atoms; and R.sup.2 represents a trityl group.

Abstract: A diffusion transfer process is disclosed for forming a color photographic image comprising the steps of:providing an aqueous-developable photographic color diffusion transfer element of two or more layers comprising a single dimensionally stable support, radiation sensitive silver halide, an aqueous solid particle thermal solvent dispersion for facilitating the thermal diffusion of dyes through a hydrophilic binder, a dye-releasing or dye-forming coupler compound, and hydrophilic binder, wherein said dye is heat transferable in said binder and said thermal solvent, said thermal solvent has a melting point between 50.degree. C. and about 200.degree. C.

Abstract: A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a reducing agent for the non-photosensitive reducible silver source; and(d) a binder;wherein the reducing agent is a hydrazide redox-dye-releasing compound of the general formulae: ##STR1## wherein: D represents the chromophore of a thermally mobile dye; X represents a single bond or a divalent linking group; R.sup.1 and R.sup.2 independently represent an organic group; and n.gtoreq.1.

Abstract: A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a chromogenic leuco dye reducing agent; and(d) a binder;wherein the chromogenic leuco dye reducing agent is a chromogenic leuco redox-dye-releasing compound of the general formula: ##STR1## wherein: (i) Cp is a coupler group;(ii) N--D is a photographic developer group; and(iii) R.sup.1 is a --C(O)--NH--A--Dye group wherein Dye represents the chromophore of a thermally mobile dye; and A represents a single bond or a divalent linking group of the formula --X--R.sup.5 --L--, wherein R.sup.5 is a divalent hydrocarbon chain containing up to 12 carbon atoms, L is a single bond or a divalent group that binds the chromophore of the thermally mobile dye to R.sup.5, and X represents a single bond or an --SO.sub.2 -- group.

Abstract: A photothermographic element containing a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer is provided. The emulsion layer comprises:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a leuco dye reducing agent; and(d) a binder;wherein the leuco dye reducing agent comprises a blocked leuco dye compound of the general formula L-R.sup.1, which is capable of being oxidized to a colored form, wherein:(i) L is a group remaining after removal of a hydrogen from a leuco dye; and(ii) R.sup.1 is a C(O)--NH--SO.sub.2 --R.sup.5 group wherein R.sup.5 is an aliphatic group or an aromatic group.

Abstract: There is disclosed a dye fixing element containing a novel compound which improves the light fastness of an image obtained by the method in which the image is formed by transferring. The above dye fixing element contains a novel hydrazine derivative represented by the following Formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent independently a substituted or unsubstituted alkyl group, cycloalkyl group, alkenyl group, or aralkyl group; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be combined with each other to form a ring, provided that this ring is a non-aromatic heterocyclic ring and the atoms constituting the ring other than the nitrogens of Formula (I) are carbon atoms.

Abstract: A heat developing photosensitive member including: a photosensitive layer containing at least an organic silver salt, a reducing agent and a photosensitive silver halide or a photosensitive silver halide forming agent; and a supporting member for supporting the photosensitive layer thereon, wherein merocyanine dye having a structure in which a thiazole nucleus or selenazole nucleus and hydantoin nucleus, thiohydantoin nucleus or selenohydantoin nucleus are combined with each other by a combining group having a methine group is contained in the photosensitive layer.

Abstract: An aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element is disclosed, wherein said element comprises radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer according to formula (I) ##STR1## wherein AH is a hydrogen bond donating group with an aqueous pK.sub.a for proton loss of greater than 6;L.sup.1 and L.sup.

Abstract: An aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element is disclosed, wherein said element comprises radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer according to formula (I) ##STR1## wherein AH is a hydrogen bond donating group with an aqueous pK.sub.a for proton loss of greater than 6;L.sup.1 and L.sup.

Abstract: The present invention provides a diffusion transfer heat-developable color photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and a nondiffusing dye-providing compound which releases or forms a diffusive dye in response to or in counter response to a reaction by which a silver halide is reduced to silver under the presence of a reducing agent, and an organic solid pigment in at least one of light-sensitive silver halide emulsion layer and the layer(s) adjacent thereto, and a method for forming a color image using the light-sensitive material.

Abstract: Disclosed is a diffusion transfer color photographic material at least having a light-sensitive silver halide, a binder, a non-diffusive dye donor compound capable of releasing or forming a diffusive dye in correspondence or reverse correspondence with the reaction of reducing the silver halide to silver, and a non-diffusive filter dye, on a support, in which the filter dye is in the form of an emulsified dispersion along with the dye donor compound. The color separatability of the processed material is good and the discrimination of the formed image is also good. The raw film of the material is free from lowering of the filter effect after storage.

Abstract: In accordance with this invention a heat-developable photographic color diffusion transfer element is provided, where this element comprises a dimensionally stable support and one or more layers comprising radiation sensitive silver halide, an organic silver salt oxidizing agent, a reducing agent, a methine-dye releasing compound, and a binder, wherein said methine-dye is heat diffusible in said element, and wherein said methine-dye releasing compound is of the structureCp--L--M (I)whereCp is a coupler radical substituted in the coupling position with a divalent linking group, L;M is a methine-dye radical exhibiting selective absorption in the visible spectrum; and where the --L--M group couples off upon reaction of said coupler radical with the oxidation product of a primary amine developing agent, and where said methine-dye radical M is released from said --L--M group subsequent to the coupling off of said --L--M group.

Abstract: An aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element is disclosed, wherein said element comprises radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer according to formula (I) ##STR1## wherein AH is a hydrogen bond donating group with an aqueous pK.sub.a value for proton loss of greater than 6;L.sup.1 and L.sup.

Abstract: Sulfonyl hydrazides are used as developers in phothothermographic and thermographic elements. The sulfonyl hydrazides have the formula:R.sup.1 --CO--NHNH--SO.sub.2 --R.sup.2wherein R.sup.1 and R.sup.

Abstract: Heat-developable photographic recording materials comprising (a) at least one binder layer coated on a support, the binder layer containing at least one light-sensitive silver halide and a light-insensitive silver salt of a fatty acid; and in the binder layer or in another layer in reactive relationship to the binder layer (b) at least one reducing agent and (c) a stabilizer selected from the group of hexamethylene tetramine and salts thereof, triazaadamantane and salts thereof, and compounds that can be derived from hexamethylene tetramine by exchanging one or more --CH.sub.2 -- groups with --S--, --SO--, or --SO.sub.2 -- provide excellent stability during storage and can be manufactured easily and inexpensively and which presents minimal environmental or health risks.

Abstract: An aqueous-developable photographic color diffusion transfer element is disclosed where this element comprises one and only one dimensionally stable support and one or more layers comprising radiation sensitive silver halide, thermal solvent for facilitating the thermal diffusion of dyes through a hydrophilic binder, a methine-dye releasing coupler, and hydrophilic binder, wherein said dye is heat diffusible in said binder and thermal solvent, and wherein said methine-dye releasing coupler is of the structure (I)Cp--L--M (I)whereCp is a coupler radical substituted in the coupling position with a divalent linking group, L;M is a methine-dye radical exhibiting selective absorption in the visible spectrum; and where the --L--M group couples off upon reaction of said coupler radical with the oxidation product of a primary amine developing agent, and where said methine-dye radical M is released from said --L--M group subsequent to the coupling off of said --L--M group.

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 color image forming substance. The silver halide, the reducing agent, the polymerizable compound and the color image forming substance are contained in light-sensitive microcapsules which are dispersed in the light-sensitive layer. According to one embodiment of the present invention, the light-sensitive layer further contains an ethylenically unsaturated polymerizable compound outside the light-sensitive microcapsules. According to another embodiment of the invention, the light-sensitive material further has an auxiliary layer containing an ethylenically unsaturated polymerizable compound.

Abstract: Photothermographic elements having improved post-processing stabilty are described. These elements comprise a support bearing at least one photosensitive, image-forming photothermographic-emulsion layer comprising:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible silver source;(c) a reducing agent for said non-photosensitive, reducible silver source,(d) a binder; and(e) a compound capable of releasing a post-processing stabilizer having a nucleus of the formula: ##STR1## wherein: A represents any monovalent group for which the corresponding compound AH functions as a post-processing stabilizer.

Abstract: A dye fixing element for use in an image formation system which is adapted to superimpose a light-sensitive element and a dye fixing element provided on separate supports upon each other so that diffusible dyes are transferred to said dye fixing element to form an image, which is characterized in that a matting agent is incorporated in either a layer nearer to said support than a dye fixing layer in said dye fixing element or a layer provided between said dye fixing layer and a surface protective layer.The dye fixing element can be used to provide a good matte image that satisfies the requirements for matte surface, i.e., low gloss, texture that prevents the image from being seen white, difficulty for white spot in occurring on the transferred image, and surface condition that gives no glare.

Abstract: A process for forming an improved dye image in a heat-developable photographic dry dye-diffusion transfer element comprising the steps of:providing a heat-developable chromogenic photographic dry dye-diffusion transfer element comprising radiation sensitive silver halide, an organic silver salt, a heat-developable dye-forming compound wherein said compound forms or releases a heat-transferable dye upon reaction of said compound with the oxidation product of a reducing agent, a reducing agent, a hydrophilic binder, and a thermal solvent wherein said thermal solvent comprises a 3-hydroxy benzamide or a 4-hydroxy benzamide and has the structure I ##STR1## wherein (a) Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, and Z.sub.5 are substituents, the Hammet sigma parameters of Z.sub.2, Z.sub.3, and Z.sub.4 sum to give a total, .SIGMA., of at least -0.28 and less than 1.

Abstract: A negative-acting photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) an iridium doped, preferably iridium-doped core-shell, photosensitive silver halide grains, generally containing a total silver iodide content of less than 10 mole %, the shell having a second silver iodide content lower than the silver iodide content of the core;(b) a non-photosensitive, reducible source of silver;(c) a reducing agent for the non-photosensitive, reducible source of silver;(d) a binder; and(e) optionally at least one compound selected from the group consisting of: a halogen molecule; an organic haloamide; and hydrobromic acid salts of nitrogen-containing heterocyclic compounds which are further associated with a pair of bromine atoms.A process of forming photothermographic emulsions from iridium-doped silver halide grains by forming silver soaps in the presence of those grains is also described.

Abstract: Photothermographic elements capable of producing a high density yellow or magenta image upon image-wise exposure and thermal development at a relatively low temperature and for a short period of time are described. The photothermographic elements of the invention comprise coated on a support base at least one light-sensitive emulsion layer comprising (a) a leuco dye reducing reducing agent, (b) a photosensitive silver halide, (c) an organic silver compound capable of being reduced by the leuco dye reducing agent, and (d) a binder; wherein the leuco dye reducing agent thereto comprises a chromogenic yellow or magenta leuco dye compound.The photothermographic elements of the invention may be used to obtain yellow and magenta images of suitable density in single color or multicolor photothermographic articles. At the same time the chromogenic leuco dye is stable enough not to be oxidized by oxygen of the air or by simple heating and to limit the fog formation after development.

Abstract: Disclosed is a product of diffusion transfer photography comprising (a) a light-sensitive element having at least a silver halide emulsion layer, (b) an image-receiving element having an image-receiving layer, (c) two supports, and (d) a processing element having an alkaline processing solution developed between the two supports, wherein one of the two supports is a reflective support coated with a composition obtained by mixing and dispersing a white pigment in a resin on at least the surface thereof on which the image-receiving layer is to be coated, wherein 50% by weight or more of the resin is polyester synthesized by the polycondensation or copolycondensation of a dicarboxylic acid with a diol.

Abstract: There are disclosed thermally processable, image-recording materials including both thermographic and photothermographic materials. The image-recording materials disclosed herein include silver halide and a specified class of reductone developing agents, and are capable of being thermally processed in the absence of water and/or base.

Abstract: A heat-developable color light-sensitive material comprising a support having thereon at least three silver halide emulsion layers each sensitive to a different spectral wavelength region, one silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a yellow dye-providing compound, a second silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a magenta dye-providing compound and a third silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a cyan dye-providing compound; at least one of said silver halide emulsion layers having a maximum spectral sensitivity at a wavelength of at least 700 nm and a spectral sensitivity at a wavelength 20 nm longer than said maximum spectral sensitivity wavelength of at most 1/10 of said maximum spectral sensitivity.

Abstract: Heat-developable photothermographic materials capable of providing stable color images of high resolution. These materials comprise a support bearing a layer of an image-forming composition comprising:(a) a photosensitive silver halide,(b) an organic silver compound,(c) a reducing agent for silver ion, and(d) a binder,The reducing agent comprises a ballasted leuco dye compound. The ballasted leuco dye compound comprises a compound of the general formula:D--BwhereinD represents the reduced chromophore of a thermally mobile dye; andB represents an organic group that reduces the thermal mobility of D in the aforementioned binder, said organic group B capable of being oxidatively cleaved. The molecular weight of B must not be so high that the resulting amount of D in the emulsion layer is insufficient to yield a dye image having a reflection optical density of at least 0.3 or a transmission optical density of at least 0.2.

Abstract: A heat-developable photosensitive material is disclosed which has a support and a photosensitive layer containing at least an organic silver salt, a silver halide and a reducing agent, a water-soluble polymeric layer containing a water-soluble polymeric material, and a hydrophobic polymeric layer containing a hydrophobic polymeric material.

Abstract: There are disclosed compounds comprising at least one cyclic 1,3-sulfur-nitrogen substituted color-providing material and at least one ballast group which are linked to each other through a triazine group. The compounds are capable of releasing the color-providing material upon cleavage in the presence of silver ions or a soluble silver complex. The color-providing compounds are useful as image-forming materials in color thermographic, photothermographic and other photographic processes.

Abstract: Dye donor element for use according to thermal dye sublimation transfer comprising a support having thereon a dye layer, wherein said dye layer comprises at least one heterocyclic isoxazolone dye.

Abstract: A photographic emulsion containing: a photosensitive silver halide; a light-insensitive, reducible silver source; a reducing agent for the light-insensitive, reducible silver source; and a binder consisting essentially of poly(vinyl butyral) having a poly(vinyl alcohol) content of about 17.5 to 21.0 wt. % and at least one solvent selected from the group consisting of: toluene, methyl ethyl ketone, acetone, tetrahydrofuran, and 1,4-dioxane. Additionally, a process for coating a substrate involving applying at least one layer of a molten thermoreversible organogel layer; causing it to gel; and removing residual solvent.

Abstract: There are disclosed color-providing compounds comprising two or more cyclic 1,3 sulfur-nitrogen groups and two or more color-providing moieties, i.e., complete dyes or dye intermediates, capable of releasing the color-forming moieties upon cleavage in the presence of silver ions or a soluble silver complex. The color-providing compounds are useful as image-forming materials in color photographic processes.

Abstract: A photosensitive material comprises a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor, a photopolymerization initiator and a heat-diffusible coloring matter. As a preferred embodiment, the photosensitive material comprises a photosensitive layer containing the photosensitive silver halide, the organic silver salt and the reducing agent, a polymerizing layer containing the polymerizable polymer precursor and the photopolymerization initiator, and a coloring material layer containing the heat-diffusible coloring material. A image forming method employing the photosensitive material comprises the steps of a) subjecting the photosensitive material to imagewise exposure; b) heating the photosensitive material; c) subjecting to whole areas exposure at least the polymerizing layer; and d) heating at least the coloring material layer to transfer the heat-diffusible coloring matter to an image-receiving material, thus forming a color image.

Abstract: A color light-sensitive material comprising at least three light-sensitive layers having different color-sensitivity from one another provided on a support. Each layer comprises a combination of at least a light-sensitive silver halide, a binder and a dye-providing compound. At least one layer thereof has a spectral sensitization peak in at least two wavelength regions, the peaks in the at least two wavelength regions being at least 50 nm away from each other and at least one spectral sensitization peak thereof exists in the wavelength region of 700 nm or above.

Abstract: A printing plate blank is formed by disposing successively a base layer, a photosensitive layer susceptible of peeling development, and a peeling support layer (or a laminate of a photosensitive silver salt layer including a photosensitive silver halide, an organic silver salt and a reducing agent). A printing plate is prepared by forming a polymerized part in the photosensitive layer through imagewise exposure and peeling apart the peeling support layer (or the laminate) together with the yet-unpolymerized port of the photosensitive layer to leave the polymerized part of the photosensitive layer on the base layer. The resultant printing plate is provided with an improved printing durability primarily by inclusion of a polymerizable compound in the base layer effective for firmly fastening the polymerized part to the base layer and additionally by subjecting the thus-prepared printing plate to additional exposure, heating and/or pressure application.

Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.

Abstract: A thermally developable color photosensitive material comprises a support, having thereon a photosensitive silver halide, a binder, an electron transfer agent, an electron donor, and a reducible dye donating compound which is capable of being reduced and releasing a diffusible dye, wherein the reducible dye donating compound and a compound represented by the following formula (1) are present together in the form of an emulsified dispersion in the binder.

Abstract: The present invention provides a new image forming method. The image forming method uses a light-sensitive material. The light-sensitive material comprises a support and a light-sensitive polymerizable layer. The light-sensitive polymerizable layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or a cross-linkable polymer. Any of the silver halide, the reducing agent, the polymerizable compound and the polymer are not encapsulated in the layer. The image forming method comprising the steps of imagewise exposing to light the light-sensitive material and simultaneously or thereafter heating the light-sensitive material at a temperature of not lower than 70.degree. C. At the heat development, the silver halide is developed and the polymerizable compound or the cross-linkable polymer is hardened. Thus, a hardened image is formed on the light-sensitive material.

Abstract: A method is disclosed for the formation of an image comprising the steps of(1) image-wise exposing, in the presence of a photopolymerizable compound, a photosensitive element comprising a support and at least one photosensitive layer containing a silver halide sensitive to actinic radiation, an organic silver salt and a reducing agent,(2) heating said photosensitive layer while in contact with a receiving element and allowing non-photopolymerized compound in the non-exposed areas to transfer and penetrate in said receiving element, and,(3) separating said receiving element from said photosensitive element.The obtained image can be a useful visible image produced on at least one of the separated elements, or it can be a hydrophobic polymer image on a hydrophilic background formed in the finally separated-receiving element which is usable as a printing plate. In the former embodiment the receiving element comprises a support and a layer containing a pigment, e.g. carbon black.

Abstract: A dye-receiving resin for sublimation transfer image receiving materials, which mainly constitutes an image receiving layer of the sublimation transfer image receiving materials, said resin being a polyester resin comprising, as a main dicarboxylic acid component, an aromatic dicarboxylic acid component, and an alicyclic glycol component in glycol component, and an image receiving layer comprising said resin shows high dye-receiving sensitivity, is superior in durability and preservation stability of images transferred, and can provide high-quality sublimation transfer image receiving materials.

Abstract: A thermal-dye-bleach construction comprising a dye in association with a thermal dye-bleaching agent of general formula I: ##STR1## wherein: each of R.sup.a and R.sup.b are individually selected from: hydrogen, an alkyl group, an alkenyl group, a cycloalkyl group, an aralkyl group, an aryl group, and a heterocyclic group, and preferably, both R.sup.a and R.sup.b represent hydrogen;p is one or two, and when p is one, Z is a monovalent group selected from: an akyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, and a heterocyclic group, and when p is two, Z is a divalent group selected from: an alkylene group, an arylene group, an alkenylene group, an alkynylene group, an aralkylene group, a cycloalkene group, and a heterocyclic group; and,M.sup.+ is a cation which will not react with a carbanion generated from the thermal-carbanion-generating agent in such manner as to render the carbanion ineffective as a bleaching agent for the dye.

Abstract: Positive-acting photothermographic elements suitable for use at contact speeds comprising a base layer having at least two layers thereon, which layers define a photosensitive medium comprising a photocurable composition, a reducible silver source, and a reducing system for silver ion comprising one or more components including a compound capable of reducing silver ion to silver metal, such that the reducible silver source and at least one component of the reducing system for silver ion are present in separate layers, wherein exposure of the element to actinic radiation causes curing of the photocurable composition in the exposed area(s), said curing preventing the reducing system from interacting with the reducible silver source during thermal processing and in which the photocurable composition comprises a free radical curable resin and a photoinitiator therefor having an absorbance to radiation in the wavelength range of 340 to 440 nm, which photoinitiator upon exposure to said actinic radiation or during

Abstract: The invention discloses an aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element comprising radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable, image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer wherein said thermal solvent comprises a sugar group containing amphiphilic compound, said amphiphilic compound comprising from one to three independently constituted 3 to 22 carbon atom hydrophobic tail(s) with one or more attached hydrophilic mono or oligosaccaridic rings or chains such that the HLB value of the compound is less than about 13.