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 described heat-developable photosensitive image-recording elements which include a photosensitive silver halide emulsion, a silver salt and an image dye-providing material. The silver salt material is provided in a layer which is separated from the layer including the image dye-providing material by a layer containing the silver halide emulsion.

Abstract: The objects of the invention are generally accomplished by a method of delaminating imaging materials comprising providing an imaging material comprising donor and receiver elements, heating said imaging material, applying opposed forces to said donor and receiver elements to separate said imaging material into donor and receiver elements, and accumulating the separated donor element. In a preferred method one or both of said opposed forces is vacuum and when the vacuum is released from said donor element, accumulating takes place by spooling after separation.The apparatus for delamination of imaging materials comprises means for applying heat and pressure to said imaging material, means to apply a separating force to at least one of said donor element and receiver element forming said imaging material and means to separate said donor element and said receiver element.

Abstract: An image forming method, comprises the steps of, using an image forming medium containing a heat-diffusible coloring matter, a polymerizable polymer precursor and a polymerization initiator; causing said polymerizable polymer precursor of said image forming medium to selectively polymerize to form a latent image comprised of a polymerized area and an unpolymerized area; andheating said image forming medium on which said latent image has been formed and which is laid overlapping on an image receiving medium, so as to satisfy the following formula (A):Tg.sub.1 .ltoreq.Ttrans.ltoreq.Tg.sub.2 (A)wherein Ttrans represents a temperature of said image forming medium, Tg.sub.1 represents a glass transition point of said unpolymerized area, and Tg.sub.

Abstract: A photothermographic element containing a transparent substrate having one major surface thereof containing the following layers sequentially coated thereon: an image-receiving layer; an opacifying layer; a first dry silver layer; an interlayer containing thermoplastic polymer; a second dry silver layer; an interlayer containing thermoplastic polymer; and a third dry silver layer, wherein the first, second, and third dry silver layers each contain a light-insensitive, reducible silver source; light-sensitive silver halide, and as a reducing agent for the light-insensitive, reducible silver source, a material oxidizable to a colored dye whose color differs from that capable of being formed in each other dry silver layer, each of the dry silver layers being individually sensitized to light of different wavelengths.

Abstract: The present invention discloses a photographic material comprising on a support a photosensitive layer containing a mixture of silver halide emulsions at least one of which is spectrally sensitized and at least one of which is not spectrally sensitized characterized in that the surface of the silver halide particles of the silver halide emulsion not being spectrally sensitized is loaded with a stabilizer having a mercapto group or the tautomeric thione group thereof such that the surface covered by one molecule of stabilizer is between 10 .ANG..sup.2 and 70 .ANG..sup.2. The loss of speed due to migration of the spectral sensitizer from the sensitized emulsion to the non sensitized emulsion is reduced and can even be inhibited.

Abstract: A heat-developable photosensitive material includes an infrared-sensitive layer having a maximum spectral sensitivity at a wavelength of 700 nm or longer. A silver chlorobromide emulsion from which the infrared-sensitive layer is formed is prepared by adding an iodide at an intermediate stage during silver halide grain formation or later. The photosensitive material exhibits high sensitivity and low fog while the corresponding emulsion coating composition in solution form remains stable with time.

Abstract: An aqueous developable chromogenic photographic dye-diffusion transfer element of two or more layers comprising a support, radiation sensitive silver halide, a dye-forming compound wherein said compound forms a heat transferable dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a solid particle thermal solvent dispersion, wherein said thermal solvent is a water-immiscible phenol derivative, has a melting point of between 50.degree. C. and about 200.degree. C., and is incorporated at 5 to 200% by weight of said hydrophilic binder, and where said thermal solvent dispersion contains a dispersing aid, is disclosed.

Abstract: An aqueous-developable photographic color diffusion transfer element comprising a single 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, and hydrophilic binder, wherein said dye is heat diffusible in said binder and thermal solvent, and wherein said dye-releasing coupler is of the structureCp--L-DyewhereCp is a cyan dye forming radical, magenta dye forming radical, yellow dye forming radical, black dye forming radical, or colorless product forming radical, said Cp being 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 is disclosed.

Abstract: A process is disclosed for forming a dye image including the steps of:exposing a photographic element comprising a support bearing a light sensitive silver halide emulsion layer containing a polymeric color coupler compound capable of forming a heat transferable dye upon development, wherein the polymeric color coupler compound is of the formula:COUP-L-Bwherein COUP represents a coupler moiety capable of forming a heat transferable dye upon reaction of the moiety with an oxidation product of a color developer; L is a divalent linking group which is separated from COUP upon reaction of the coupler moiety with said oxidation product of a color developer; and B represents the polymeric backbone;developing said exposed element with a color developer solution to form a heat transferable dye image;heating said exposed, developed element to thereby transfer the dye image from the emulsion layer to a dye receiving layer, where said receiving layer is part of the photographic element or part of a separate dye receivin

Abstract: A process is disclosed for forming an improved dye image in an aqueous-developable photographic dry dye-diffusion transfer element comprising the steps of:providing an aqueous-developable chromogenie photographic dry dye-diffusion transfer element comprising radiation sensitive silver halide, an aqueous-developable material containing color coupler wherein said coupler forms or releases a heat-transferable dye upon reaction of said coupler with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent wherein said thermal solvent 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 Hammer 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: Disclosed is a novel dye fixing element comprising a dye fixing layer on which a diffusive dye produced or released by developing a light-sensitive element containing at least (i) a light-sensitive silver halide, (ii) a hydrophilic binder and (iii) a dye providing compound which releases a diffusive dye in correspondence to or counter correspondence to an exposure in the presence of a base and/or base precursor after or simultaneously with the imagewise exposure which is to be transferred and fixed. A borate compound is incorporated in at least a protective layer of the fixing layer provided on one side thereof.

Abstract: There are disclosed dye-providing compounds comprising color coupler dyes substituted on the phenylene diamine portion with one or two cyclic 1,3 -sulfur-nitrogen groups. The dye-providing compounds are capable of releasing the coupler dye upon cleavage in the presence of silver ions or a soluble silver complex. The dye-providing compounds are useful as image-forming materials in color thermographic, photothermographic and other photographic processes.

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: 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 squaric acid derivative in which there is bonded to the squaric acid ring, via an oxygen atom, an alkyl or alkylene group, a partially hydrogenated aryl or arylene group, or an aralkyl group. The superacid catalyzes decomposition of the squaric acid derivative, thus increasing the quantity of strong acid present in the medium. The resultant acid can be used to effect a color change in an acid-sensitive material, so providing an imaging process.

Abstract: A photographic element is described comprising a layer containing a hydrophilic low molecular weight compound on one surface of a support and a backing layer comprising a hydrophilic binder on the other surface of the support, wherein a gas-permeable hydrophilic layer is provided as the outermost layer of said backing layer.

Abstract: The present invention provides 4 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material comprises a support and a light-sensitive polymerizable layer provided thereon. The light-sensitive polymerizable layer contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer and a colorant. The image forming method comprises an exposing step, a developing step, a removing step, a transferring step and a repeating step. Some embodiments of the method further contain a laminating step. The present invention is characterized in that a multicolor image is formed on an image receiving material by the repeating step.

Abstract: A method of printing an image on a substrate by applying to the substrate a film which is chemically activated by heat, and scanning the film by a beam of radiation according to the image to be printed, to chemically activate the film by heat and thereby to produce a pattern in the film according to the image scanned. The film includes a reagent capable of undergoing a redox reaction when heated in the presence of another reagent present with the film when scanned by the beam, to produce the redox reaction between the two reagents.

Abstract: Photothermographic and thermographic diffusion transfer image-recording materials are provided wherein an auxiliary ligand for silver ions is employed to enhance transfer image density and discrimination.

Abstract: The present invention provides 6 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material comprises a support and a light-sensitive polymerizable layer provided thereon. Some embodiments of the light-sensitive material further have an adhesive layer. The light-sensitive polymerizable layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer. Some embodiments of the light-sensitive polymerizable layer further contain a colorant. The image forming method comprises an exposing step, a developing step, a removing step and a transferring step or a laminating step. Some embodiments of the image forming method further contains a peeling step or a toning step. The present invention is characterized in the combination of the removing step with the transferring step or the laminating step.

Abstract: In a heat-developable color photosensitive material comprising a photosensitive silver halide, a dye providing compound, and a binder on a support, the content of calcium is controlled to 500 ppm or more based on the total weight of the binder, allowing the use of inexpensive binders. The photosensitive material is cost effective and forms an image with a low fog density (Dmin) and a high image density (Dmax).

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 alkyl 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 cation which will not react with acarbanion generated from the thermal-carbanion-generating agent in such manner as to render the carbanion ineffective as a bleaching agent for the dye.

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: A heat developable photosensitive material is disclosed, comprising a support having thereon at least one photosensitive silver halide emulsion layer which contains (i) at least one compound selected from among the compounds represented by formulae (I) and (III) and (ii) a dye compound represented by formula (LI): ##STR1## the definition of Y, R, R', M, T, U, n, m and for formula (I) and (III) and Y, Z and n for dye of formula (LI) are as defined in the specification.

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 novel dye fixing element is provided comprising a dye fixing layer on which a diffusive dye produced or released by developing a light-sensitive element containing at least a light-sensitive silver halide, a hydrophilic binder and a dye providing compound which produces or releases a diffusive dye in correspondence to or counter correspondence to the exposure in the presence of a base and/or base precursor after or simultaneously with imagewise exposure is transferred and fixed, wherein the outermost layer on the dye fixing layer side or on the opposite side, i.e., back layer side contains at least one compound represented by the following general formula (I) and exhibits a contact angle of 80.degree. or more to a drop of methane iodide(RfCH.sub.2 O).sub.n --PO(OM).sub.m (I)wherein n and m satisfy the equation: n+m=3; Rf represents a perfluoroalkyl group; and M represents an alkali metal ion, NH.sup.4+ or secondary, tertiary or quaternary ammonium ion.

Abstract: An image receiving material comprises an image receiving layer provided on a support. The image receiving layer contains particles of a thermoplastic compound. The image receiving layer has a porous surface formed by the particles. According to the present invention, the image receiving material is prepared by forming the image receiving layer on the support and heating the image receiving layer at a temperature of higher than a softening point of the thermoplastic compound to widen pores in the porous surface. The image receiving material is preferably used in combination with a light-sensitive material which comprises a support and a light-sensitive layer in which light-sensitive microcapsules are dispersed. The light-sensitive microcapsules contain silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a color image forming substance.

Abstract: The objects of the invention are generally accomplished by a method of delaminating imaging materials comprising providing an imaging material comprising donor and receiver elements, heating said imaging material, applying opposed forces to said donor and receiver elements to separate said imaging material into donor and receiver elements, and accumulating the separated donor element. In a preferred method one or both of said opposed forces is vacuum and when the vacuum is released from said donor element, accumulating takes place by spooling after separation.The apparatus for delamination of imaging materials comprises means for applying heat and pressure to said imaging material, means to apply a separating force to at least one of said donor element and receiver element forming said imaging material and means to separate said donor element and said receiver element.

Abstract: A method for forming a dye image with high contrast is provided, wherein a heat-processable light-sensitive material comprising a support having thereon a non-light-sensitive layer and a light-sensitive layer containing a light-sensitive silver halide and a dye-providing material capable of releasing or forming a diffusible dye upon heat development is subjected to heat development to release or form the diffusible dye, which is transferred to a dye-receiving material having a dye-receiving layer to form a dye image on the dye-receiving layer, wherein the heat development or the transfer of the dye is carried out in the presence of a compounds represented by formula 1 or 2 and a compound represented by formula 3 or 4,(X.sub.1).sub.t --Q formula 1 ##STR1##R.sub.31 --X.sub.2 formula 3R.sub.41 --CO--Y.sub.1 --W.

Abstract: A light-sensitive material contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer. According to the present invention, the light-sensitive material comprises a support and at least three image forming functional layers. The layers include a light-sensitive layer, a polymerizable layer and an image formation accelerating layer. The light-sensitive layer contains silver halide. The polymerizable layer contains the ethylenically unsaturated polymerizable compound or/and the cross-linkable polymer. The image formation accelerating layer contains a component having a function of accelerating image formation. The component is selected from a reducing agent, a base, a base precursor and a heat development accelerator. The uppermost layer of the light-sensitive material preferably contains a polyvinyl alcohol having a saponification degree of not less than 70%. The light-sensitive material of the present invention is heat-developable.

Abstract: Blends of poly(caprolactone) and poly(vinyl chloride) have been found to have good dye permeability. They have been incorporated into photothermographic constructions as barrier interlayers and dye-receiving layers.

Abstract: Acid can be generated by exposing a mixture of a superacid precursor and a dye to actinic radiation of a first wavelength which does not, in the absence of the dye, cause decomposition of the superacid precursor to form the corresponding superacid, thereby causing absorption of the actinic radiation and decomposition of part of the superacid precursor, with formation of a protonated product derived from the dye, then irradiating the mixture with actinic radiation of a second wavelength, thereby causing decomposition of part of the remaining superacid precursor, with formation of free superacid. Preferably, following these irradiations, the imaging medium is heated while the superacid is admixed with a secondary acid generator capable of being thermally decomposed to form a second acid, the thermal decomposition of the secondary acid generator being catalyzed by the presence of the superacid.

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 photothermographic composite structure for use in a solvent-free dye thermal positive imaging diffusion-transfer process comprising:(a) an image-receiving element comprising a polymeric dyeable image-receiving layer having a glass transition temperature in the range of 20.degree. to 200.degree. C., and(b) strippably adhered to said image-receiving element, an imageable photothermographic element comprising in at least one layer thereof a binder, a silver source material, photosensitive silver halide in catalytic proximity to said silver source material, and a formazan dye.

Abstract: Thermal recording material containing a suitable substrate coated with an image forming layer. The image forming layer contains a thermally reducible source of silver, a 3-indazolinone or urea compound; a polymeric binder; and optionally, an auxiliary reducing agent and toner. Preferably, an anti-stick layer is coated on top of the imaging layer.The 3-indazolinone and urea compounds have been found to enhance the thermal image forming capability of thermal recording material.

Abstract: Photothermographic articles containing interfacial barriers comprising a layer of a polymeric organic acid containing carboxyl and/or sulfo groups in direct contact with an adjacent layer comprising a basic polymer capable of forming hydrogen bonds with the polymeric organic acid are disclosed. A crosslinked barrier is formed at the interface between the layers which has substantial impermeability to chemical diffusion.

Abstract: A process for forming a dye image including the steps of: (a) exposing a photographic element comprising a light sensitive silver halide emulsion layer containing a color coupler compound capable of forming a heat transferable dye upon development; (b) developing the exposed element resulting from step (a) with a color developer solution to form a heat transferable dye image; (c) heating the exposed, developed element resulting from step (b) to thereby transfer the dye image from the emulsion layer to a dye receiving layer which is part of the photographic element or part of a separate dye receiving element brought into contact with the photographic element; and (d) separating the emulsion layer from the dye receiving layer containing the transferred dye image; wherein the color coupler compound is of the following formula (I):COUP--B (I)wherein COUP represents a coupler moiety capable of forming a heat transferable dye upon reaction of the coupler compound with an oxidized product of the developing solution

Abstract: A dye diffusion transfer type heat developable color light-sensitive material is described including a support having thereon at least three light-sensitive layers containing, in combination, silver halide emulsions which are sensitive in different spectral regions from one another and dye providing compounds capable of releasing or forming diffusible dyes having different hues from one another, wherein the material has an exposure side which is subjected to incident light from a light source, wherein at least two layers of the at least three light-sensitive layers include a first light-sensitive layer containing an emulsion spectrally sensitized to a part of infrared rays and a second light-sensitive layer which is positioned on the exposure side nearer to the light source than is the first light-sensitive layer and contains an emulsion spectrally sensitized to a part of infrared rays having a wavelength shorter than that of the infrared rays applied to the emulsion of the first light-sensitive layer, and th

Abstract: Various photothermographic elements are provided containing a transparent substrate; image receiving layers; dry silver layers; interlayers; and a translucent or opacifying layer. The translucent or opacifying layer can occupy a variety of positions in the photothermographic element relative to the dry silver layers. The translucent or opacifying layers serve to help produce a reflection print upon exposure of the photothermographic element to actinic light and subsequent heating of the exposed element for image development and dye transfer.

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: Vinyl stearate-vinyl chloride copolymers and blends of polyvinyl stearate and polyvinyl chloride have been found to have good dye permeability. They have been incorporated into photothermographic constructions as barrier interlayers and dye receiving layers.

Abstract: A heat-developable photosensitive material is disclosed which has a support and provided thereon a photosensitive layer. The photosensitive layer contains at least an organic silver salt, a silver halide and a reducing agent represented by the formula (I). Also, an image forming method using the heat-developable photosensitive material is disclosed.

Abstract: A dry process silver salt photosensitive member is disclosed. The photosensitive member has a heat-developable photosensitive element containing at least (1) and organic silver salt, (2) a reducing agent, and (3) at least one of a photosensitive silver halide and a photosensitive silver halide-forming component on a support. The heat-developable photosensitive element further contains a compound represented by the general formula (I) and a compound represented by the general formula (II).

Abstract: A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form. Preferred embodiments comprise xanthene sulfonamides having N-aryl substituents, e.g., hydroquinone substituents. These compounds possess redox potentials ranging between about +200 to -500 millivolts and thus are useful as dyes for producing photographic, photothermographic, thermal, and pressure-induced images, as well as being useful as redox indicators in a wide variety of biological and chemical reactions.

Abstract: A light-sensitive microcapsule contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a color image forming substance. Another light-sensitive microcapsule contains a photopolymerization initiator, an ethylenically unsaturated polymerizable compound and a color image forming substance. The microcapsules are prepared by a process comprising the steps of emulsifying an oily phase containing the silver halide, the reducing agent, the polymerizable compound and the color image forming substance (or an oily phase containing the photopolymerization initiator, the polymerizable compound and the color image forming substance) in an aqueous medium containing a water-soluble polymer in water; and forming the shell around the droplets of the oily phase.

Abstract: A dye fixing element to which a diffusible dye is transferable, the dye having been formed or released during development, either after or at the same time as imagewise exposure of a photosensitive element, which photosensitive element comprises a photosensitive silver halide, a binder and a dye providing compound which forms or releases a diffusible dye in correspondence or counter-correspondence to the exposure, wherein the dye fixing element comprises at least one compound represented by general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and X are as defined in the specification.

Abstract: Method of forming thermal transfer dye images comprising exposing a recording element comprising at least one layer of an organic photochemical imaging composition comprising a heat-diffusible dye (precursor) monomer, said layer being permeable to said dye (precursor) monomer, to an image-wise distribution of actinic radiation to create a change in its permeability corresponding to said image-wise distribution of actinic radiation, wherein said change in permeability is brought about by the radiation-induced polymerization or crosslinking reaction of said organic photochemical imaging composition combined with a concurrent copolymerization or crosslinking reaction of said heat-diffusible dye (precursor) monomer, bringing said recording element in contact with an image-receiving element, overall heating at least one of said contacting elements to cause diffusion of the heat-diffusible dye (precursor) monomer from the areas having unchanged permeability and transfer to said image-receiving element, causing in t

Abstract: This invention relates to a full-color hard copy imaging system and a process, where a multiply photosensitive donor sheet, comprising clear polymeric or an opaque paper base, coated sequentially with a first layer of patches of a cyan, a magenta, and a yellow dye, that are thermally diffusible, with a second layer also coated sequentially with patches of a red light sensitive, a green light sensitive or a blue light sensitive, negative or a positive working photoresist layer, in such a manner that each of the colored dye patches are in registry with their complementary color sensitive photoresist patches, is exposed with white light sequentially, three times in registry on the three primary light sensitive patches, through a multicolor image (a positive transparency or a photographic negative), to produce crosslinks, image wise, in the exposed areas in the case of the negative resist system, or to uncrosslink the resist structure image wise in the exposed areas for a positive working resist system.

Abstract: A dry image-forming process is disclosed. The dry image-forming process of the invention comprises heat developing a light-sensitive material comprising a support having thereon at least a photosensitive silver halide, a binder, and a dye releasing redox compound said dye releasing redox compound being reductive to the photosensitive silver halide and being capable of releasing a hydrophilic dye upon reaction with the photosensitive silver halide under heating, after or simultaneously with imagewise exposure, to form imagewise a mobile hydrophilic dye and heating, after simultaneously with the heat development, the light-sensitive material together with a dye-fixing layer in the presence of a hydrophilic thermal solvent to thereby transfer the mobile hydrophilic dye onto the dye-fixing layer to form a dye image and fix the dye image. The heat development is carried out in a state containing substantially no water, and the whole of steps are carried out without particular supplying a solvent.

Abstract: A novel light-sensitive heat-sensitive composition is disclosed, comprising a photohardenable composition, a dye which discolors upon reacting with a base, and a base precursor. A novel light-sensitive heat-sensitive recording material is also disclosed, comprising a support having provided thereon the above described light-sensitive heat-sensitive composition. In a preferred embodiment, the dye is a spectral sensitizing dye for the photohardenable composition. Furthermore, a novel image formation process is disclosed, comprising the steps of: (a) imagewise exposing the light-sensitive heat-sensitive recording material to light to cure the exposed portions of the recording material; and (b) uniformly heating the imagewise exposed recording material to discolor the dye in the unexposed portions thereof.