Abstract: An image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent, pigment particles, an ethylenically unsaturated polymerizable compound and a base precursor. The silver halide, the reducing agent, the pigment particles, the polymerizable compound and the base precursor are contained in microcapsules dispersed in the light-sensitive layer. The image forming method comprises imagewise exposing the light-sensitive material, developing the light-sensitive material to polymerize the polymerizable compound, and pressing the light-sensitive material on the image receiving material to transfer the pigment particles to the image receiving material. In the present invention, the light-sensitive material is pressed at a pressure in the range of 20 kg/cm.sup.2 to 500 kg/cm.sup.2 while heating the light-sensitive material at 30.degree. C.

Abstract: A process of forming images with a heat-developable color light-sensitive material is disclosed. The process of forming images comprises steps of exposing imagewise a heat-developable color light-sensitive material which comprises a support having thereon a light-sensitive layer containing a binder, light-sensitive silver halide emulsion and dye donating substance capable of forming or releasing a diffusible dye upon heat development and superposing a dye image receiving material which comprises a support having thereon a dye receiving layer, over the light-sensitive material during, or after completion of, heat development to transfer dye images to said dye image receiving layer; wherein the dye image receiving layer contains a hydrophilic binder and polymer particles; a weight ration of the hydrophilic binder to the polymer particles is from 1:05 to 1:20; and the heat development and transfer of dye images to the dye image receiving layer are carried out in the substantial absence of water.

Abstract: The use of copolymers of vinylidene chloride and vinyl pyrrolidone as selective diffusion media in dye-diffusive photothermographic imaging constructions is disclosed. Unoxidized phenolic leuco dye molecules diffuse into a film of these copolyers but do not readily diffuse out. In contrast, their oxidized dye forms, which are quinoidal in nature, readily diffuse through these interlayers resulting in improved image stability and color separation.

Abstract: Imageable articles having dye selective interlayers comprising copolymers of styrene and vinylidene chloride are disclosed. The interlayers have sufficient permeability to be useful for constructions in which cationic dyes must be prevented from diffusing away from an image receiving layer. Additionally, the selective interlayers allow unoxidized leuco dye to be diffused away from an image receiving layer, thereby increasing print stability. Use of these interlayers in multicolor dye-diffusive imaging constructions increases image stability and color density in the final image.

Abstract: Disclosed is a heat developable light-sensitive material that comprises a support having thereon at least one light-sensitive layer containing a silver halide emulsion, a dye-donating substance and a reducing agent, wherein at least one subbing layer comprised of a hydrophobic polymer is provided between the light-sensitive layer nearlest to the support and the support, and at least one said subbing layer contains a photographic useful reagent.A heat developable light-sensitive material according to this invention, can provide control fogging and raise the maximum density, or can improve the maximum density difference without exerting adverse effects on sensitivity and preservability.

Abstract: The present invention is directed to an imaging system wherein the developed image and non-image areas are transferred to a receptor element by a transfer coating layer. The transfer layer of the present invention is coated on the support of the imaging sheet and/or developer sheet and comprises a material capable of holding developed images and non-image areas that can be transferred to a receptor surface upon the application of heat to the rear surface of the support. The transfer coating layer is capable of liquefying when heated and resolidifying when heat is removed.

Abstract: A thermal transfer recording material improved in adhesion of an image-receiving layer to a support comprises an image-receiving element comprising a support having a subbing layer and an image-receiving layer provided thereon in this sequence, said subbing layer containing a hardener.

Abstract: A diffusion transfer photographic material is disclosed, which comprises a support having thereon at least a photosensitive element comprising a photosensitive silver halide emulsion and a diffusible dye donating compound, and a dye fixing element which is placed upon the said photosensitive element at the time of image transfer, wherein a natural macromolecular polysaccharide originating from red algae is included in said photosensitive element and/or in said dye fixing element, and a process of producing a diffusion transfer photographic material is disclosed, which comprises the step of using a coating liquid which contains a water soluble polymer solution comprising a natural macromolecular polysaccharide, a hydrophilic organic solvent in which the said water soluble polymer is essentially insoluble and water.

Abstract: A process for preparation of a light-sensitive material containing microcapsules is disclosed. The light-sensitive material comprises a light-sensitive layer provided on a support. The microcapsules are dispersed in the light-sensitive layer. The process of the present invention comprises the steps of: (1) mixing a silver halide emulsion and the reducing agent or the photopolymerization initiator with the polymerizable compound to prepare a light-sensitive composition; (2) emulsifying the composition in an aqueous medium to prepare an aqueous emulsion; (3) forming a shell around the droplets of the composition contained in the aqueous emulsion to prepare a microcapsule dispersion; (4) coagulating the aqueous medium to set the microcapsule dispersion; (5) storing the set microcapsule dispersion; (6) melting the aqueous medium to prepare a coating solution of the light-sensitive layer; and (7) coating the solution on the support.

Abstract: A dye fixing element is disclosed, comprising a support having provided thereon a dye fixing layer which mordants a diffusible dye, wherein at least one of said dye fixing layer or a layer adjacent thereto contains two or more kinds of high molecular weight binders which exhibit phase separation each other so as to give a mat appearance.

Abstract: A heat-developable light-sensitive material is disclosed. The material comprises a paper support and provided thereon, a subbing layer containing at least two hydrophobic polymers different from each other in chemical composition, and a light-sensitive layer containing a hydrophilic binder, a light-sensitive silver halide emulsion, a dye-providing substance and a reducing agent in that order. The subbing layer is provided on the paper support by coating a solution containing the hydrophobic polymers dissolved in a solvent, at least one of said polymers being substantially insoluble in the solvent independently.

Abstract: The present invention relates to an image recording method utilizing photosensitive microcapsules. These photosensitive microcapsules have characteristics of being rendered hardenable upon exposure. Further, only the hardenable photosensitive microcapsules can be hardened. In this image recording method, an optional image pattern is initially exposed to a photosensitive recording medium having thereon the photosensitive microcapsules for rendering only the exposed photosensitive microcapsules hardenable corresponding to the image pattern. Subsequently, the exposed photosensitive recording medium is heated to harden only the hardenable photosensitive microcapsules. Further, the photosensitive recording medium is entirely exposed again with light to render the unhardened photosensitive microcapsules hardenable.

Abstract: A diffusion transfer-type silver halide color photographic photosensitive material comprising a support, having thereon at least a photosensitive thermally developable silver halide, a binder, a dye donating compound which is fast to diffusion and which forms or releases a diffusible dye, a development inhibitor releasing compound which releases a development inhibitor and a compound represented by formula (I)R.sup.1 --Y--O--H [I]wherein R.sup.1 represents an alkyl group, an aryl group, an alkylamino group, an arylamino group, an alkoxy group, an aryloxy group, a heterocyclic residual group or a polymer residual group of said groups, Y represents ##STR1## or --SO.sub.2 --NR.sup.2 -- and R.sup.2 represents a hydrogen atom, an alkyl group, an aryl group or an acyl group, and R.sup.1 and R.sup.2 may be joined together to form a five or eight membered ring is disclosed.

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: An image forming method of imagewise exposing and heating a light-sensitive material is disclosed. The light-sensitive material comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound, a color image forming substance and a base precursor. The silver halide, the reducing agent, the polymerizable compound, the color image forming substance and the base precursor are contained in microcapsules which are dispersed in the light-sensitive layer. According to the present invention, the support is made of a thin polymer film having a thickness of not more than 75 .mu.m. The light-sensitive material is heated from the side of the support for 0.1 to 5 seconds.

Abstract: An image forming method using a heat developable light-sensitive material is disclosed. The light-sensitive material is lowered in curling caused by humidity changing at room temperature or heating at development. The method comprises the following steps ofimagewise exposing to light a heat developable light-sensitive material comprising a paper support having thereon a subbing layer comprising a hydrophobic resin and a light-sensitive layer being provided on the subbing layer, in which the light-sensitive layer comprises a hydrophilic binder, light-sensitive silver halide grains and a dye providing substance,developing the light-sensitive material be heating,contacting the light-sensitive material with a dye-receiving material, andtransferring a diffusible dye formed in the light-sensitive material to the dye-receiving material in the presence of a solvent. The hydrophobic resin of the subbing layer has a glass transition point of from 30.degree. C. to 250.degree. C.

Abstract: A diffusion transfer color photosensitive material is disclosed, comprising a support having thereon at least light-sensitive silver halides, binders and nondiffusible dye-providing compounds capable of releasing or forming a diffusible dye, corresponding to or counter-corresponding to the progress of conversion of the siliver halide into silver through reductive reaction, which contains as a trapping agent at least one compound represented by the following formula (I) to prevent the generation and/or the transfer of dyes in the white area without causing the lowering of image density:--(A).sub.p --(B).sub.q-- (I)[wherein A represents at least one vinyl monomer unit containing a quaternary ammonium ion associated therewith a counter ion at least 50 mol % of which is constituted by an anion represented by the following formula (II):R--X.sup.- (II)(wherein X.sup.- represents SO.sub.3.sup.- and/or COO.sup.

Abstract: A light-sensitive material 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. According to the present invention, the light-sensitive layer further contains a chromium (VI) compound, a molybdenum (VI) compound or a tungsten (VI) compound.

Abstract: Disclosed is a silver halide photographic material comprising a support having thereon at least one layer containing a compound represented by general formula (I): ##STR1## wherein EAG represents an electron-accepting group; A represents a group which undergoes a reaction triggered by the cleavage of the oxygen-nitrogen single bond in the general formula to release PUG; B represents a hydrogen atom or an alkyl group, an aralkyl group, an aryl group, a heterocylic group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxysulfonyl group or an aryloxysulfonyl group which may contain substituents; the solid lines indicate a single bond; the broken lines indicate that either of these line is a bond, with the proviso that when the broken line between N and A represents a bond, B is not present; EAG and B, and A and B may be connected to each other to form a ring; EAG may be connected to a polymer residue to fix the compound of general f

Abstract: An image is formed by securing an image receiving medium onto a support member, superposing onto the image receiving medium an image forming medium containing at least a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor and a photopolymerization initiator, subjecting the image forming medium to imagewise exposure, heating the image forming medium thus treated, subjecting it to polymerization exposure to form a polymer image, and transferring a heat-diffusible coloring matter to the image receiving medium, corresponding with said polymer image.

Abstract: Certain fluoran dyes have been found to be effective reducing agents for silver ion in dry silver constructions. The fluoran dyes have the following structure: ##STR1## wherein: R.sup.1 represents methyl or n-butyl;R.sup.2 represents n-butyl or cyclohexyl;R.sup.3 represents hydrogen, methyl, or methoxy; andR.sup.4 represents ##STR2## where X represents halogen (preferably chlorine); and a binder.

Abstract: A method for image formation comprising the steps of exposing a light-receiving sheet coated with a layer of microcapsules containing photopolymerization agent and colorless dye selectively to light so as to form a cured image thereon opposite in sense to the desired final image, laying an image-receiving sheet uniformly coated with a layer of a developing material for reacting with and coloring the colorless dye on the light-receiving sheet, heating the resulting sandwich configuration and pressing these sheets against each other thereby rupturing the uncured microcapsules to form a colored image.

Abstract: The post-processing stability of silver halide photothermographic emulsions is enhanced by the presence of stabilizing amounts of certain azlactones.

Abstract: A heat-developable light-sensitive material is disclosed, comprising a support having thereon at least a surface latent image type silver halide, a binder, an electron transfer agent or a precursor thereof, an electron donor, a reducible dye providing compound capable of releasing a diffusible dye upon being reduced with the electron donor and a hydrazine derivative.The heat-developable light-sensitive material can provide positive images having a sufficiently high image density and a low minimum density in a short period of developing time.

Abstract: The present invention is directed to an imaging system wherein the developed image and non-image areas are transferred to a receptor element by a transfer coating layer. The transfer layer of the present invention is coated on the support of the imaging sheet and/or developer sheet and comprises a material capable of holding developed images and non-image areas that can be transferred to a receptor surface upon the application of heat to the rear surface of the support. The transfer coating layer is capable of liquefying when heated and resolidifying when heat is removed.

Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a binder, at least one of an electron-donating agent and a precursor thereof, a reducible dye-forming compound which releases a diffusible dye by reduction and an electron-transferring agent, wherein an electron-transferring agent precursor co-exists together with the electron-transferring agent.

Abstract: An image recording material comprises a support and an image recording layer provided thereon which contains a salicyclic acid derivative or its metal salt, which functions as a developer of a leuco dye to form a color image. A new salicylic acid developer is herein disclosed. The salicylic acid developer is a salicylic acid derivative having the formula (I) or its metal salt: ##STR1## in which each of R.sup.13 and R.sup.15 independently is hydrogen, an alkyl group, an aryl group or a tertiary aralkyl group; R.sup.16 is an alkyl group or an aryl group; and when R.sup.15 is hydrogen R.sup.13 is a tertiary aralkyl group. An image recording process employing the image recording material is also disclosed.

Abstract: A method for forming an image comprising heating, in the presence of water and at least one of a base and a base precursor, a combination of (i) a light-sensitive element comprising a support provided thereon at least a light-sensitive silver halide, a binder, and a dye providing substance and (ii) a dye fixing element comprising a mordant capable of fixing a mobile dye formed in said light-sensitive element, wherein said dye fixing element further contains at least one of oil droplets and a latex comprising a polymer having a glass transition point of 40.degree. C. or less.

Abstract: An image recording method, where the image is transferred by superposing an exposed light-sensitive material and an image receiving material on the surface of a drum.Before superposing, in circumferential direction with respect to the axial direction of the drum reduced or magnified image is exposed onto the light-sensitive material.When a reduced image has been exposed, the exposed light-sensitive material will be positioned between the image receiving material and the surface of the drum. When a magnified image has been exposed, the image receiving material will be positioned between the exposed light-sensitive material and the surface of the drum. In this way an image without distortions will be transferred.

Abstract: A process of making opaque grid lines for a color filter array element comprisinga) exposing to light through a negative grid pattern a photo-hardenable element comprising a support having thereon a coating comprising a water-soluble polymer; a water-soluble dichromate salt; and up to 1 g/m.sup.2 of a black pigment, black dye or dyes providing an opaque color, or a precursor thereof;b) washing the element with a solvent to remove the unexposed areas of the element, leaving a grid line pattern of hardened polymeric substance on the element; andc) drying the element to produce open cells on the support divided by opaque lines of the hardened polymeric substance greater than 0.3 .mu.m in height above the support.In another embodiment of the invention, the above dichromate salt coating does not contain any black pigment or dye, and the grid pattern is dyed black before the drying step.

Abstract: Disclosed is a heat-developable color photographic material containing a compound represented by Formula (1) shown below: ##STR1## wherein X represents a halogen atom, and Y represents a group of nonmetallic atoms necessary for forming a nitrogen-containing heterocyclic ring bearing on the ring at least one substituent having 4 or more carbon atoms.Disclosed is also a process for forming an image on a heat-developable color photographic material, which comprises carrying out heat-development processing in the presence of the compound represented by Formula (1) mentioned above.

Abstract: A system for providing a personal booklet, such as a passport, with a picture of the face and personal data of the bookholder to thereby provide the booklet holder's identity. The system includes entering a picture of the face of an applicant, the picture being attached to an application form, as a figure image into an image composing device, entering personal data of the applicant entered in the application form as a character image, providing a composite image of the figure and character images, printing the composite image onto a thermal transfer type photosensitive printing paper, transfering the printed composite image onto an image receiving layer coated on a transparent cover sheet bound in the booklet, and sandwiching the image receiving material layer between a supporting sheet bound in the booklet next to the transparent cover sheet and the transparent cover sheet.

Abstract: A method of forming an image is disclosed comprising irradiating a heat-sensitive recording material with a laser beam, wherein the heat-sensitive recording material includes a support having provided thereon a light-absorbing layer containing microcapsules which encapsulate a core substance containing carbon black and a binder, and tranferring a latent image thus formed on the light-absorbing layer, in accordance with the pattern and amount of the laser beam irradiation, to an image-receiving film under pressure to thereby obtain a visible image on the image-receiving film.

Abstract: A silver halide color light-sensitive material comprising a support having thereon at least a silver halide and an infrared-absorbing image-forming compound represented by formula (I):(Dye --X).sub.q --Y (I)wherein Dye represents an infrared-absorbing dye group or an infrared-absorbing dye precursor group derived from a compound represented by formula (II)A, (II)B or (II)C; X represents a chemical bond or a connecting group; Y represents a group capable of making a difference in the diffusibility of the dye component of said compound represented by formula (I) between before and after the reaction with the silver halide having a latent image in correspondence or counter correspondence to the silver halide; having a latent image and q represents an integer 1 or 2, and when q is 2, the two (Dye-X) groups may be the same or different: ##STR1## wherein R.sup.1A and R.sup.

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: Disclosed are an apparatus for and a method of recording an image in which a heat-developable light-sensitive material and an image-receiving material are superposed on each other and the superposed two materials are inserted between an outer periphery of a heating drum and an endless belt wound around a plurality of rollers and are wound around the outer periphery of the heating drum by pressing the two materials against the outer periphery of the heating drum by the endless belt, and the heating drum is rotated by being pressed by the endless belt, so as to heat develop the heat-developable light-sensitive material and allow an image formed by heat development to be transferred onto the image-receiving material.

Abstract: A light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (a) a polymerizable vinyl monomer, (b) a photopolymerization initiator, and (c) an electron acceptive developer and a light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (d) an electron acceptive polymerizable vinyl monomer and (b) a photopolymerization initiator.

Abstract: A light-sensitive material comprises a light-sensitive layer containing silver halide, a reducing agent and an ethylenic unsaturated polymerizable compound provided on a paper support (the silver halide and polymerizable compound are contained in microcapsules which are dispersed in the light-sensitive layer). Another light-sensitive material comprises a light-sensitive layer containing a photo polymerizable composition or a photo polymerizable compound provided on a paper support (the photo polymerizable composition or photo polymerizable compound is contained in microcapsules which are dispersed in the light-sensitive layer). The paper support employs a base paper sheet having a void volume of not higher than 40%.

Abstract: There is disclosed a heat-developable color light-sensitive material having an excellent preservability and capable of providing images having a superior discrimination and only a slight fluctuation of Dmin against that of the development conditions. The material comprises a support having thereon a light-sensitive silver halide, a dye donor and a compound represented by following Formula I: ##STR1## wherein X represents a group capable of splitting off in heat-development; Y represents the group of atoms necessary to form 5- or 6-membered heterocyclic ring; Z represents a substituent; and n represents an integer of 0 to 4.

Abstract: A heat developable photosensitive material comprising a support having thereon at least one photosensitive silver halide emulsion layer, which contains at least one compound selected from those represented by the following general formulae (I) and (II) to acquire a high S/N ratio and high sensitivity: ##STR1## wherein R represents an alkylene group, an alkenylene group, an aralkylene group or an arylene group, which each may be substituted; Y represents ##STR2## R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.

Abstract: A heat-developable color photographic light-sensitive material capable of giving positive color images having high maximum density, low minimum density, and less strain, comprising at least a light-sensitive silver halide, a binder, a dye-providing non-diffusible compound capable of releasing a diffusible dye on being reduced, and a reducing agent, wherein the light-sensitive material further contains at least one compound represented by the following formula (I), (II), or (III); ##STR1## wherein R.sup.1 and R.sup.2 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, with a proviso that R.sup.1 and R.sup.2 each represents a group having no redox activity after its cleavage and R.sup.3 and R.sup.4 each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group.

Abstract: A heat developable color photosensitive material capable of forming color images in a heat development, more particularly, capable of obtaining heat developable color diffusion transfer images substantially high in a maximum density. The heat developable color photosensitive material contains at least two photosensitive layers which are different from each other in color sensitivity and a non-photosensitive interlayer containing particles interposed between the photosensitive layers.

Abstract: A system for providing a personal booklet, such as a passport, with a picture of the face and personal data of the bookholder to thereby provide the booklet holder's identity. The system includes entering a picture of the face of an applicant, the picture being attached to an application form, as a figure image into an image composing device, entering personal data of the applicant entered in the application form as an character image, producing a composite image of the figure and character images, printing the composite image onto a thermal transfer type photosensitive printing paper, transfering the printed composite image onto an image receiving layer coated on a transparent cover sheet bound in the booklet, and sandwiching the image receiving material layer between a supporting sheet bound in the booklet next to the transparent cover sheet and the transparent cover sheet.

Abstract: A method of heating an image formation sheet of the present invention comprises heating while winding the image formation sheet around the periphery of a drum during heat developing and heat transfer. When the total length of the image formation sheet is greater than the length of a contact portion on the periphery of a drum, the image formation sheet and a sheet on which an image is formed are heated while being conveyed at a constant speed so that the heating time is over a given value. While when the total length of the image formation sheet is less than the length of the contact portion on the periphery of the drum, the image formation sheet is wound around the drum at a speed higher than the constant speed, and is heated for development in a stationary state, and is subsequently separated from the drum at the higher speed than the constant speed.

Abstract: A photographic element is disclosed comprising a support having provided thereon a highly water-absorbing high molecular weight compound having degree of swelling of 5 or more.

Abstract: A dry image-forming process is disclosed which comprises transferring a mobile hydrophilic dye formed imagewise at exposure areas of a heat developable light-sensitive material comprising a support having thereon at least a light-sensitive silver halide, a hydrophilic binder, a reducing agent for the silver halide, and a non-diffusible 2-equivalent coupler by heating the light-sensitive material after imagewise exposure or simultaneously with imagewise exposure in the presence of a hydrophilic thermal solvent at a high temperature at which the hydrophilic thermal solvent is in a molten state without supplying a solvent from the outside, and fixing the dye in a dye-fixing layer.

Abstract: A multicolor recording material is disclosed, which comprises a support having provided thereon a coating layer comprising two or more kinds of microcapsules each containing at least a leuco dye capable of being colored by oxidation and a photo oxidizing agent outside said microcapsules, and a reducing agent as necessary components, with two or more leuco dyes capable of forming different colors from each other being retained in different kinds of said microcapusles respectively composed of walls of high polymers having different glass transition points.

Abstract: A heat developable color photographic material is disclosed, comprising a support having thereon at least a photosensitive silver halide, a binder, and a dye providing compound capable of releasing or forming a diffusible dye in correspondence or counter-correspondence to reduction of the silver halide to silver, said heat developable color photosensitive material further comprising a compound represented by formula (I):C.sub.6n (H.sub.2 O).sub.5n+1 (I)wherein n represents an integer of 1 or more. The material exhibits excellent raw preservability and provides a stain-free color image having a high maximum density.

Abstract: A novel heat developable light-sensitive material is disclosed, comprising light-sensitive silver halide emulsion layers on a paper support, wherein at least one subbing layer capable of inhibiting fog is provided interposed between the undermost layer among said light-sensitive silver halide emulsion layers and said paper support. In a preferred embodiment, the subbing layer comprises a binder and at least one material capable of inhibiting fog.

Abstract: An optical image-recording material comprising:(a) microcapsules, in which at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules, or(c) microcapsules, in which at least one reducing agent is enclosed, and (d) both at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent not enclosed in the microcapsules,wherein the microcapsules have capsule walls made from a material which lowers its permeability barrier to at least one component selected from the photo-oxidizing agent and the reducing agent when the capsule wall material is heated above its glass transition temperature, and the leuco dye is a xanthene compound having an N-substituted anilino group substituted by an electron attracting group.