Abstract: Provided is a method for producing non-photosensitive fatty acid silver salt comprising the steps of reacting a silver ion-containing solution, the solvent of which being a mixture of an organic solvent and water or water, with a solution of an alkali metal salt of a fatty acid, solvent of which being water, organic solvent or a mixture of an organic solvent and water, to obtain a fatty acid silver grain; adding a dispersing agent; and desalting the obtained fatty acid silver dispersion by ultra-filtration; characterized in that pH of the dispersion is kept at 6 or above during a period from a point of time immediately after the addition of the dispersing agent to a point of time an electric conductivity of the filtrate drops below 2000 &mgr;S/cm but not lower than 500 Ats/cm by the desalting operation.

Abstract: A photothermographica material is disclosed, comprising an organic silver salt and a light sensitive silver halide, wherein the photothermographic material contains a hydrophilic binder of 0.5 to 2 g per mol of the organic silver salt and the organic silver salt having been formed in the presence of the silver halide of 7×1015 to 3×1017 grains per mol of the organic salt.

Abstract: A photothermographic material is described which comprises a support having provided on one surface thereof at least one kind of a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent for silver ions, and a binder, wherein the photothermographic material comprises the surface active agent represented by the following formula (F): 1

Abstract: A photothermographic image-recording material having a good adhesion between a subbing layer and a support or an image-forming layer is described, which comprises a support, at least one subbing layer comprising a polyester provided on at least one side of the support and an image-forming layer provided on the subbing layer, wherein the polyester is a polyester having a glass transition temperature of from 40° C. to 100° C.

Abstract: A method for thermally forming images for plate making, which comprises forming an image for plate making by using a thermally processed image recording material comprising a silver salt of an organic acid, a reducing agent, a color image forming material and an organic binder on a support, wherein the image consists essentially of a developed silver image and a color forming dye image and the color forming dye image shows an absorbance for ultraviolet region higher than that for visible region and has a transmission density of 0.3 or more for the region of 360-450 nm. There are provided a thermally processed image recording material and method for thermally forming images that provide significant difference of ultraviolet absorption between image areas and non-image areas suitable for printing plate making.

Abstract: A photothermographic material is disclosed, comprising a support having thereon an image recording layer comprising an organic silver salt, a silver halide, a reducing agent and a binder, wherein the outermost surface of the image recording layer side of the photothermographic material exhibits a difference in center-line mean roughness of not more than 10 nm between before and after being subjected to thermal processing.

Abstract: A thermally developable photosensitive material comprising organic silver salts, photosensitive silver halides, and reducing agents. The thermally developable photosensitive material has a support having am moisture content of not more than 0.5 percent by weight.

Abstract: A non-photosensitive core-shell silver salt can be used in thermographic and photothermographic imaging compositions and materials. This core-shell silver salt includes one or more silver salts in the core, at least one of which is different from the one or more silver salts used in the shell. The molar ratio of the different silver salts in the core and shell is from about 0.01:1 to about 100:1.

Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a phenolic activating agent in combination with a blocked color-forming agent of Structure I: 1

Abstract: Thermographic and photothermographic materials comprise a barrier layer to provide physical protection and to prevent migration of diffusible imaging components and by-products resulting from high temperature development. The barrier layer comprises a film-forming, water-insoluble aromatic polyester that has a molecular weight of at least 10,000 g/mole and is capable of retarding diffusion of mobile chemicals such as fatty acids, developers and toners. This polymer can also be present in admixture with another film-forming polymer to provide a clear and scratch-resistance surface.

Abstract: A color photothermographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, and a blocked developer in the presence of a thermal solvent represented by the following structure: 1

Abstract: A heat developable light-sensitive material comprises a support, a light-sensitive layer and a non-light-sensitive layer. The light-sensitive layer contains silver halide and a reducing agent.

Abstract: A photothermographic image recording element has on a support a photosensitive layer containing a non-photosensitive organic silver salt, a photosensitive silver halide, and a binder, wherein the organic silver salt has been formed in the presence of a tertiary alcohol. The photosensitive layer and/or a layer disposed adjacent thereto contains a nucleating agent. Alternatively, the photosensitive layer contains the silver halide which has been formed independent from the organic silver salt and added during preparation of a coating solution, and the main binder is a polymer latex having a Tg of −30° C. to 40° C. The element shows low fog, high contrast, and high sensitivity.

Abstract: 1. A photothermographic material is disclosed, comprising on a support light sensitive silver halide grains, an organic silver salt, a reducing agent and a binder, wherein the photothermographic material comprises a silane compound represented by the following formulas.

Abstract: The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.

Abstract: A substantially light-insensitive monosheet recording material comprising a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermosensitive element further contains an unsaturated carbocyclic or heterocyclic stabilizer compound substituted with a —SA group where A is hydrogen, a counterion to compensate the negative charge of the thiolate group or a group forming a symmetrical or an asymmetrical disulfide and the recording material is capable of producing prints with a numerical gradation value defined as the quotient of the fraction (2.5-0.1)/(E2.5-E0.1) greater than 2.3 , where E2.5 is the energy in Joule applied in a dot area of 87 &mgr;m×87 &mgr;m of the imaging layer that produces an optical density value of 2.5, and E0.

Abstract: A heat developable light-sensitive material high in heat development activity, excellent in image keeping quality, high in sensitivity and rapidly developable, comprising a support having provided on one side thereof a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent for a silver ion and a binder, wherein the reducing agent is a compound represented by the formula (I), and an aromatic carboxylic acid compound represented by the formula (A) and a hydrogen bonding compound are further provided on the same side where the light-sensitive silver halide is provided.

Abstract: A heat developable photosensitive material comprising at least two layers is disclosed. The first layer is formed by coating a first coating composition containing the organic silver salt, the photosensitive silver halide, the reducing agent, polymer latex in an amount of at least 30 percent by weight of the first layer at dried state and a solvent, the solvent comprising water in an amount of at least 50 percent by weight of the solvent, and the second layer is formed by coating a second coating composition comprising a polymer latex in an amount of at least 50 percent of the second layer at dried state and a solvent, the solvent comprising water in an amount of at least 60 percent by weight of the solvent, and the second coating composition having a viscosity of from 50 to 1,000 cP at 25 ° C., and the viscosity at 5° C being at least 1.5 times higher than that at 25° C.

Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a dry thermal process without the use of aqueous solutions in which a blocked developing agent located within the photographic element is thermally activated or unblocked, optionally followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in a dry thermal process.

Abstract: Blocked photographically useful groups decompose thermally via a Lossen rearrangement reaction, including, for example, compounds represented by the following structure: 1

Abstract: The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, one or more organic silver salts, a binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.

Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: 1

Abstract: A photosensitive material comprising a substrate and a reversibly decolorable colored layer disposed thereon, wherein the reversibly decolorable colored layer is reversibly colored and decolored, the reversibly decolorable colored layer is in a colored state at 25 ° C., and a temperature at which the color density of the reversibly decolorable colored layer is reduced to 50% based on that at 25 ° C. is 50 to 120 ° C. A method for forming an image using the photosensitive material is also provided.

Abstract: The present invention is directed to the use of a mixture of non-light sensitive organic silver salts in a color photothermographic system comprising a blocked developing agent for color imaging. At least one of the organic silver salts is the sole or primary silver donor during thermal development and at least one other organic silver salt, present at levels in the range of 30,000 to 60,000 mg/mol of silver halide, effectively inhibits fog during thermal development of the photothermographic element. In one embodiment, and the system comprises a mixture of at least two organic silver salts, wherein the first organic silver salts exhibits a cLogP of 0.1 to 10 and a Ksp of 7 to 14 and wherein the second organic silver salt exhibits a cLogP of 0.1 to 10 and a Ksp of 14 to 21.

Abstract: A photothermographic material is disclosed, comprising a support provide thereon an image forming layer containing a light sensitive silver halide, an organic silver salt and a reducing agent and at least a component a layer, wherein the component layer contains a compound capable of trapping a material causing odor and is provided farther from the support than image forming layer.

Abstract: The present invention is directed to a photothermographic element in which the density formed in a thermally processed photothermographic element is limited for the purpose of scanning the element prior to removal of silver halide, metallic silver, and/or any organic silver salts. In one embodiment of the invention, this is accomplished by employing limited quantities of sensitized silver halide in a photothermographic element.

Abstract: A photothermographic image forming element contains a non-photosensitive silver salt which has been formed by simultaneously adding and mixing previously prepared solutions of silver nitrate and an organic acid alkali metal salt. A photosensitive layer containing a photosensitive silver halide or a layer disposed adjacent thereto or both contain a nucleating agent. The element produces a low fog, high contrast image.

Abstract: Bisphenol-phosphorus compound complexes represented by the following general formula (1) are disclosed (R1 to R4 represent hydrogen atom or a group that can be a substituent on a benzene ring; L represents —S— group or a —CHR5— group where R5 represents hydrogen atom or an alkyl group; and R6 to R8 represent an alkyl group, an aryl group, a heterocyclic group etc.). The present invention provides reducing agents that can realize thermally processed image recording materials that can provide sufficient image density at a practical reaction temperature (specifically 100-140° C.) and within a practical reaction time (specifically 1-30 seconds), and can sufficiently suppress the coloration of white portions when the materials are stored in a dark place after the development.

Abstract: A heat development system of forming an image by exposing and heat developing a sheet-form heat developable light-sensitive material by using a heat development image-forming apparatus comprising a conveying member, a light-sensitive material-supplying member and an image exposure member, said heat developable light-sensitive material comprising a support and a light-sensitive layer comprising a binder, an organic silver salt, a reducing agent for a silver ion, and light-sensitive silver halide grains.

Abstract: A photothermographic material having, on a support, an image-forming layer that contains at least a non-photosensitive silver salt of an organic acid, a photosensitive silver halide, a nucleating agent and a binder, and at least one protective layer outer than the image-forming layer on the support, wherein the protective layer contains at least one compound selected from the group consisting of the compounds represented by the following formula (1) and the compounds represented by the following formula (2) as emulsion dispersion or solid dispersion:

Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing agent represented by the following formula (1), (d) a binder, and (e) a phenol compound represented by the following formula (2) on the same side of a support: 1

Abstract: A photothermographic material disclosed, comprising on a support a light sensitive layer containing an organic silver salt, light sensitive silver halide grains and a solvent, wherein the organic silver salt comprises tabular organic silver salt grains exhibiting an average needle ratio of not less than 1.1 and less than 10.0, the light sensitive silver halide grains having been subjected to chemical sensitization.

Abstract: A photothermographic dry imaging material is disclosed. The imaging material comprises a support, a photosensitive layer containing at least an organic silver salt, photosensitive silver halide, reducing agent and a binder, and a subbing layer containing a water-soluble polymer having a hydroxy group, provided on the support.

Abstract: A photothermographic material is disclosed, comprising a support, an image forming layer containing organic silver salt grains, light sensitive silver halide grains and a reducing agent and a surface protective layer on the image forming layer, wherein the element composition on the surface of image forming layer side, obtained by X-ray photoelectron spectroscopy exhibits a ratio of the number of carbon elements to the number of oxygen elements of not more than 9.

Abstract: A substantially light-insensitive black and white thermographic material including a support and a thermosensitive element, containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the binder is a water-dispersible film-forming polymer with covalently bonded moieties with one or more acid groups or anhydrides thereof and the thermographic material is thermally developable under substantially water-free conditions; and a process for producing the substantially light-insensitive black and white thermographic material comprising the steps of: producing an aqueous dispersion of the substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together the aqueous dispersion of the substantially light-insensitive organic silver salt, the reducing agent and the binder; and applying the one or more aqueous coating compositions to the support thereby forming after dry

Abstract: A process for producing an aqueous dispersion I containing particles including a substantially light-insensitive organic heavy metal salt A with a solubility in 100 mL of water of less than 10−3 g at 20° C. comprising the steps of: (i) producing an aqueous dispersion II containing particles containing a salt B with a solubility in 100 mL of water between 1.5 g and 0.001 g at 20° C.; and (ii) converting the salt B in the particles of the aqueous dispersion II into the organic heavy metal salt A, wherein the organic heavy metal salt A and the salt B have a common cation; and a production process for thermographic and photothermographic materials therewith.

Abstract: A photothermographic material is disclose, comprising a light-sensitive silver halide, an organic silver salt, a reducing agent, a thiuronium salt and a binder, wherein the photothermographic material further contains at least one of compounds represented by formulas such as 1

Abstract: A photosensitive element comprising a silver halide emulsion having silver halide grains containing an organic hole-trapping dopant.

Abstract: There is disclosed a nanoparticulate dispersion of a silver carboxylate particles having on the surface of the particles a surface modifier which is a nonionic oligomeric surfactant based on vinyl polymer with an amido function. In particular, the surface modifier is acrylamide, methacrylamide or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.

Abstract: There is disclosed an oxidation-reduction imaging forming composition comprising an aqueous based dispersion of (i) nanoparticulate silver carboxylate particles having on the surface of the particles a surface modifier which is a phosphoric acid ester and (ii) an organic reducing agent. In particular, the surface modifiers can be mixtures of mono- and di-esters of orthophosphoric acid and hydroxyl-terminated, oxyethylated long-chain alcohols or oxyethylated alkyl phenols or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.

Abstract: A photothermographic material comprising a defined amount of a compound represented by the following general formula as a reducing agent is disclosed. In the following general formula, R1 and R1′ each independently represent an alkyl group, at least one of which is a secondary or tertiary alkyl group; R2 and R2′ each independently represent hydrogen atom or a group that can be a substituent on benzene ring; L represents —S— group or a —CH(R3)— group where R3 represents hydrogen atom or an alkyl group; and X and X′ each independently represent hydrogen atom or a group that can be a substituent on benzene ring. The photothermographic material is characterized by providing sufficient image density by heat development, and showing good silver color tone and little change with time after the development.

Abstract: A production method for a photothermographic recording material comprising the steps of: (i) providing a support; (ii) coating the support with a photo-addressable thermally developable element comprising a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt, a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder, characterized in that the photosensitive silver halide is formed by reacting an aqueous emulsion of particles of the substantially light-insensitive organic silver salt with at least one onium salt with halide or polyhalide anion(s) and that the photo-addressable thermally developable element is coated from an aqueous dispersion medium; and a recording process therefor.

Abstract: A photothermographic material is disclosed, comprising on a support an organic silver salt, a light-sensitive silver halide, a reducing agent, and a compound represented by the following formula, 6-aryl-2,4-bis(tribromomethyl)-s-triazine or a 6-heteroaryl-2,4-bis(tribromomethyl)-s-triazine.

Abstract: Disclosed is a thermally processed image recording material having an image-forming layer that contains a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions and a binder on a support, wherein the binder is coated as a dispersion of polymer microparticles having a core/shell structure, glass transition temperature of shell part of the core/shell structure is higher than glass transition temperature of core part, and the binder shows a minimum film-forming temperature of 30° C. or lower. According to the present invention, there is provided a thermally processed image recording material that provides improved image storability after heat development, i.e., improved coloration of white portions when the material is left at a high temperature, and has a transparent coated film with low haze that is also excellent in brittleness.

Abstract: A photothermographic material comprising, on one surface of a support, at least one kind of photosensitive silver halide, a silver salt of an organic acid, a reducing agent for silver ions, and a binder, wherein (1) said material further comprises two or more kinds of organic polyhalogenated compounds, and (2) a melting point of a mixture which consists of the organic polyhalogenated compounds in the same content ratio as the content ratio of said compounds in the photothermographic material is in the range of from −10° C. to 50° C. relative to a heat development temperature for the photothermographic material. The photothermographic material of the present invention shows high sensitivity and superior storability before heat development, and the material can be used for medical images, photoengraving and the like.

Abstract: A method for producing grains of aliphatic acid silver salt by mixing a solution containing silver ions and a solution of aliphatic acid alkali metal salt to attain reaction of them, wherein (1) 95-100% of the total molar number to be added of the aliphatic acid alkali metal salt is added under a condition that dilution factor of the solution of aliphatic acid alkali metal salt becomes 10-fold or higher at 1 second after the addition, (2) 95-100% of the total amount to be added of silver in the solution containing silver ions is added under a condition that dilution factor of the solution containing silver ions becomes 20-fold or higher at 1 second after the addition, and (3) 50-100% of the total amount to be added of the solution of aliphatic acid alkali metal salt is added simultaneously with the solution containing silver ions.

Abstract: A photothermographic recording material comprising a support and a photo-addressable thermally developable element comprising photosensitive silver halide in catalytic association with a substantially light-insensitive silver salt of an organic carboxylic acid, an organic reducing agent for the substantially light-insensitive silver salt of an organic carboxylic acid in thermal working relationship therewith and a binder, characterized in that the binder is water soluble or water dispersible and the reducing agent is a non-sulfo-substituted 6-membered aromatic or heteroaromatic ring compound with at least three substituents one of which is a hydroxy group at a first carbon atom and a second of which is a hydroxy or amino-group substituted on a second carbon atom one, three or five ring atoms removed in a system of conjugated double bonds from the first carbon atom in the compound, in which (i) the third substituent may be part of an annelated carbocyclic or heterocyclic ring system; (ii) the third substituent

Abstract: A photothermographic material is disclosed, comprising a support having on one side of the support a light-sensitive layer containing a light-sensitive silver halide, an organic silver salt, a reducing agent and a binder, and at least one protective layer, wherein the light-sensitive layer has a silver content of 0.10 to 0.45 g/cm3 and a dry thickness of 1 to 10 &mgr;m, and a total dry protective layer thickness being 3 to 20 &mgr;m.

Abstract: Disclosed is a thermally developable photosensitive material having a photosensitive layer comprising a photosensitive silver halide, an organic silver salt, a reducing agent, and a binder, a thermally developable photosensitive material the organic silver salt comprises tabular organic silver salt grains having an aspect ratio of at least 3, and average of needle ratio of the tabular organic silver salt grains measured from principal plane direction is not less than 1.1 and less than 10. The thermally developable photosensitive material exhibits high sensitivity as well as low fog and an image forming method employing the same.

Abstract: A thermally developable photosensitive material is disclosed, comprising a support having thereon an image forming layer containing an organic silver salt and optionally provided on the side of the image forming layer, a component layer, at least one of the image forming layer and the component containing photosensitive silver halide grains and the photosensitive material exhibiting a silver potential of not more than 200 mV.