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: 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: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polymer having epoxy functionality, strongly bonds the overcoat layer to the imaging layer.

Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polyalkoxysilane, strongly bonds the overcoat layer to the imaging layer.

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: A process for the manufacture of a photothermographic element comprising the steps of:a) providing a substrate,b) coating a first layer on said substrate, said first layer comprising an organic polymeric binder, silver halide, reducible silver salt or silver complex, and an organic solvent,c) before 70% of the solvent in said first layer is removed from said first layer, coating a second layer comprising a solvent and a second polymeric binder onto said first layer, said second polymeric binder comprising at least one cellulose ester, at least one of said first layer and said second layer containing a reducing agent for silver ion.

Abstract: A heptamethine cyanine dye in which both nitrogen atoms of the cyanine chromophore bear a carboxyalkyl substituent comprising an alkyl chain of at least five carbon atoms. The dyes are useful as sensitisers in photothermographic imaging materials.

Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polymer having pyrrolidone functionality, strongly bonds the overcoat layer to the imaging layer.

Abstract: A negative-acting photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:(a) core-shell-type, photosensitive silver halide grains containing a total silver iodide content of less than 4 mole %, the core having a tint silver iodide content of from about 4-14 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) at least one compound selected from the group consisting of: a halogen molecule; an organic haloamide; and hydrobromide acid salts of nitrogen-containing heterocyclic compounds which are further associated with a pair of bromine atoms.

Abstract: A fluorinated polymer comprising at least three different groups within the polymer chain derived from reactive monomers, the monomers comprising:(a) a fluorinated, ethylenically unsaturated monomer;(b) a hydroxyl-containing, ethylenically unsaturated monomer; and(c) a polar, ethylenically unsaturated monomer.The fluorinated polymers provide a surfactant that is particularly useful in the coating of polymeric layers. The surfactants can reduce surface anomalies, such as mottle when used to coat photothermographic and thermographic elements from certain solvent systems. The present invention also provides photothermographic and thermographic elements comprising the foregoing fluorinated polymers.

Abstract: A photothermographic material comprising photographic silver halide, a reducible silver source, a reducing agent for silver ion and a binder, and as an antifoggant and/or stabilizer, a compound of the formula (I): ##STR1## wherein R is a member selected form the group consisting of a hydrogen atom, an alkyl group, an aryl group and a heterocyclic group.

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: The present invention is a heat developed, photothermographic element comprising 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 silver ions;(d) a binder; and(e) a substituted hydroxyphenyl compound which provides antifoggant and print stabilizing properties to the photothermographic element. The substituted hydroxyphenyl compound may be of the formula: ##STR1## wherein: R represents hydrogen, benzoyl, a five or six membered heterocyclic ring system, or a fused ring system; or of the formula ##STR2## wherein: R.sup.1 represents a disubstituted or a trisubstituted s-triazine group, a disubstituted benz-bis-triazole group, a disubstituted benz-bis-thiazole group, a disubstituted benz-bis-oxazole group, and a disubstituted benz-bis-imidazole group.

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: Post-processing stabilizers for photothermographic, silver imaging media are disclosed. The stabilizers are represented by the following general formulae: ##STR1## wherein: R.sup.1, R.sup.2, and R.sup.3 are independently H, halogen, an alkyl group, an alkoxy group, a thioalkyl group, a cycloalkyl group, a perhalogenated alkyl group, or taken together form a cycloaliphatic group.Compounds of formula (I) may be used as stabilizer precursors in photothermographic silver imaging media to provide post-processing stability without significantly adversely affecting desired properties of the photothermographic material.

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: 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: Photothermographic elements containing image-forming emulsions with photothermographically useful compounds (e.g., stabilizers, toners, activators, developers, etc.) which are blocked with silyl groups, but become deblocked in the presence of a source of fluoride ion.

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: Novel silver-carboxylate/1,2-diazine compounds having the formula: ##STR1## wherein: R.sup.1 represents either an alkyl, aralkyl, cycloalkyl, or alkenyl group of up to 29 carbon atoms; or an aryl group of up to 14 carbon atoms; andand R.sup.2 represents either hydrogen, an alkyl group, a cycloalkyl group fused to the 1,2-diazine ring, or the atoms necessary to complete a 5- or 6-membered aromatic ring fused to the 1,2-diazine ring.The novel silver-carboxylate/1,2-diazine compounds are coordination compounds of two silver-carboxylate molecules and two molecules comprising a 1,2-diazine nucleus. These compounds can serve as the silver source in a black-and-white thermographic or photothermographic element or as the oxidizing agent for a dye-based thermographic or photothermographic color-imaging construction.

Abstract: Radiation sensitive thermally developable imaging elements comprise:(a) photosensitive silver halide,(b) light insensitive silver salt oxidizing agent,(c) reducing agent for silver ions, and(d) an antifoggant compound comprising s-triazines having at least one tribromomethyl substituent. The antifoggants are effective in reducing spurious background image densities.

Abstract: Phothermographic material capable of producing a high density cyan image upon image-wise exposure and thermal development at a relatively low temperature and for a short period of time. The photothermographic material of the invention comprise coated on a support base at least one light-sensitive emulsion layer containing: (a) a binder; (b) a silver source material; (c) a light sensitive silver halide in catalytic proximity to said silver source material, wherein said emulsion layer or an adjacent layer thereto comprises a chromogenic cyan leuco dye.The photothermographic material of the invention may be used to obtain good cyan image 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: 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: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating are provided with both a backing layer and an electroconductive layer to reduce static electricity effects and improve conveyance through processing equipment. The backing layer is an outermost layer and is located on the side of the support opposite to the imaging layer whereas the electroconductive layer is an inner layer and can be disposed on either side of the support.

Abstract: Photothermographic compositions comprising a photographic silver halide, an organic silver salt, and a reducing agent for the organic silver salt, display improved stabilty in the presence of a compound 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,R.sup.1, R.sup.2, and R.sup.3, are independently hydrogen or methyl and with the proviso that R.sup.1 can represent an aryl group when R.sup.2 and R.sup.3 are hydrogen;R.sup.4 is hydrogen or lower alkyl of from 1 to 4 carbon atoms;R.sup.5 and R.sup.6 independently represent hydrogen, an alkyl group, a cycloalkyl group, an aryl group or R.sup.5 and R.sup.6 taken together with the carbon atom to which they are joined form a ring of 4 to 12 atoms;R.sup.7 and R.sup.8 are independently hydrogen or lower alkyl of 1 to 4 carbon atoms; andn is 0 or 1.

Abstract: Photothermographic compositions comprising a photographic silver halide, an organic silver salt, and a reducing agent for the organic silver salt, display improved stability in the presence of a compound having a nucleus of the formula:A--(CH.sub.2).sub.n --X--(CH.sub.2).sub.n --Awherein:A represents any monovalent group for which the corresponding compound AH functions as a post-processing stabilizer,X is S, SO, or SO.sub.2, and n is 1 to 10.

Abstract: An improved method for manufacture of a thermographic or photothermographic element comprises the addition to the imaging composition of an amount sufficient to enhance the adhesive characteristics thereof of a polyalkoxysilane which has been pre-hydrolyzed in an organic solvent with a stoichiometric amount of water. A particularly suitable material is tetraethoxysilane which has been hydrolyzed in acetone with four moles of water for each mole of tetraethoxysilane.

Abstract: A photothermographic element comprising a photosensitive silver halide, an organic silver salt and a reducing agent in concentrations such that imagewise exposure to actinic radiation generates from the silver halide a catalyst which accelerates an image-forming reaction between the organic silver salt and the reducing agent is processed by a method comprising the steps of (1) imagewise-exposing the element to actinic radiation to form a latent image therein, (2) subjecting the imagewise-exposed element to a first heating step at a temperature and for a time sufficient to intensify the latent image but insufficient to produce a visible image, and thereafter (3) subjecting the element to a second heating step at a temperature and for a time sufficient to produce a visible image.

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: 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: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating and in which a polyalkoxysilane is incorporated in the imaging composition to provide enhanced adhesion are protected against undesirable width-wise curling by interposing a barrier layer between the support and the image-forming layer. The barrier layer, which is composed of poly(silicic acid) and a water-soluble hydroxyl-containing monomer or polymer that is compatible therewith prevents migration from the image-forming layer to the support of by-products of hydrolysis of the polyalkoxysilane which can cause width-wise curl and consequent jamming of processing equipment.

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 heat-developable photosensitive material which comprises an organic silver salt, a silver halide, a reducing agent and a heat development accelerator having a redox potential ranging from -1.2 V to +1.0 V on the basis of an AgCl/Ag electrode.

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 light-sensitive material comprises a support and a light-sensitive layer provided thereon which contains silver halide, a reducing agent, a 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 pre cursor are contained in microcapsules which are dispersed in the light-sensitive layer. According to the present invention, the color image forming substance is a coloredsubstance, namely a dye or a pigment, and the microcapsules further contain a polar compound such as an alcohol, an ether, an amide, an urea, an urethane and a sulfonamide. Most of the polar compounds preferably have a molecular weight in the range of 100 to 400. An exceptional polar compound is polyethylene glycol or its derivative, which preferably has a molecular weight in the range of 200 to 20,000.

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 addition of 3-substituted-5-alkylthio-1,2,4-triazoles to silver halide photothermographic emulsions improves the post-processing stability of the emulsion.

Abstract: This invention relates to novel recording materials which employ color-forming di- and triarylmethane compounds possessing certain S-containing ring-closing moieties, namely, or thiolactone, dithiolactone or thioether ring-closing moiety and to a method of forming color by contacting these dye precursor compounds with a Lewis acid material capable of opening the thiolactone, dithiolactone or thioether ring-closing moiety whereby the compound is rendered colored, that is, converted to its chromophore color.

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: A novel silver halide photographic material is described, comprising a compound represented by formula (I): ##STR1## wherein Q represents a nonmetallic atomic group required to be connected to carbon atom and nitrogen atom to form a monocyclic or condensed heterocyclic ring therewith; L represents a divalent group; n represents an integer of 0 to 2; M.sup.1 represents a hydrogen atom, ammonium ion or metallic ion; and R.sup.1 and R.sup.2 each represents a hydrogen atom, alkyl group, ammonium ion or metallic ion and may be the same or different or may be connected to each other to form a 5- or 6-membered ring. In a preferred embodiment, at least one of R.sup.2 and R.sup.1 represents a hydrogen atom, ammonium ion or metallic ion.

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

Abstract: A method for forming an image comprising heating a heat-developable light-sensitive material comprising a support having thereon at least a light-sensitive silver halide and a binder, simultaneously with or after imagewise exposure thereof in the presence of water, at least one of a base and a base precursor, and an acetylene compound represented by formula (I):R.sub.1 --C.tbd.C--R.sub.2 (I)wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a carboxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, or a substituted or unsubstituted carbamoyl group; provided that both R.sub.1 and R.sub.2 do not represent hydrogen atoms at the same time.

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 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: The present invention relates to a heat-developable light-sensitive material, or a light-sensitive material that produces image by development through dry heat treatment. The present invention provides a heat-developable light-sensitive material that achieves high sensitivity while experiencing a reduced degree of thermal fogging by employing core/shell type silver halide grains that contain 4-40 mol % of silver iodide and which have a lower silver iodide content in the surface layer than in the internal phase.

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: The present invention provides a photographic material containing a non-photosensitive silver salt comprising a photosensitive silver halide, a non-photosensitive silver salt, a reducing agent, a polymerizable compound and a color image-forming substance provided on a support, wherein at least said polymerizable compound and said color image-forming substance are contained in the same microcapsules so that said color image-forming substance may be converted into an imagewise immobile state after the material has been imagewise exposed to light and then heated. Said material has a high sensitivity and may form a color image having an absorption in a visible range, by light-exposure for a short period of time followed by a dry and rapid photographic treatment.

Abstract: A photosensitive material comprises a photosensitive and heat-developable element, and further a light-to-heat conversion element or a nonlinear optical function element. The photosensitive and heat-developable element comprises at least a photosensitive silver halide, an organic silver salt and a reducing agent. The light-to-heat conversion element comprises at least one of an inorganic metal and an organic coloring matter. The nonlinear optical function element comprises a comprises a compound selected from the group consisting of an inorganic crystal, an organic crystal, a polymer, a polymeric liquid crystal, a polymeric composition and a polymeric liquid crystal composition. An image forming method employing the photosensitive material comprises the steps of imagewise exposing the material by use of a laser beam, heating the material and forming a polymer image on the material.