Abstract: A heat-developable light-sensitive material comprising a support and at least one image-forming layer, and containing a light-insensitive silver salt, a light-sensitive silver halide and a binder, wherein the light-sensitive material comprises at least one image-forming layer which contains: a light-sensitive silver halide which has been spectrally sensitized to from 750 to 1,400 nm; and a binder comprising a polymer latex having a glass transition temperature of from -30.degree. C. to 40.degree. C.

Abstract: An image forming process comprises the steps of image-wise exposing to light a light-sensitive material, heating the light-sensitive material to develop the silver halide within the exposed area and to harden the hardening layer, and removing the light-sensitive layer and the unhardened area of the hardening layer from the light-sensitive material with an etching solution to form a replica image of the hardened area on the support. The light-sensitive material comprises a support, a hardening layer and a light-sensitive layer in this order. The hardening layer contains an ethylenically unsaturated polymerizable compound represented by the formula (I).A(--NH--CO--Y--L--Q.sub.n).sub.m (I)in which A is an m-valent organic group having 1 to 50 carbon atoms; Y is --O-- or --NR--, wherein R is hydrogen or an alkyl group having 1 to 12 carbon atoms; L is an (n+1)-valent aliphatic group having 1 to 10 carbon atoms; Q is acryloyloxy or methacryloyloxy; n is 1, 2 or 3; and m is 2, 3, 4, 5 or 6.

Abstract: A photothermographic element contains a non-photosensitive organic silver salt, a photosensitive silver halide which has been formed independent of the non-photosensitive organic silver salt, and a binder. An image forming layer contains the photosensitive silver halide, a latex of a polymer having a Tg of -30.degree. C. to 40.degree. C. as a main binder, and a compound of formula (I): ##STR1## wherein X is --N.dbd., --N(R)--, --0--, or --S--, wherein R is hydrogen, hydroxyl, aliphatic hydrocarbon, aryl or heterocyclic group, Z is a single bond or a group of atoms necessary to form a 5- to 7-membered ring with X, and Q.sub.1 and Q.sub.2 each are a group of atoms necessary to form an aromatic hydrocarbon or heterocyclic ring fused to the ring completed by Z.

Abstract: In a photothermographic element comprising a non-photosensitive silver salt, a photosensitive silver halide, and a binder on a support, a latex of a polymer having a Tg of -30.degree. C. to 40.degree. C. constitutes at least 50% by weight of the binder in an image forming layer containing the silver halide, and the image forming layer or a layer disposed adjacent thereto or both contain a nucleating agent and a diphosphorus pentoxide-derived compound. The element produces a low fog, high contrast image.

Abstract: Thermographic or photothermographic image recording elements comprising (a) a reducible silver salt, (b) a reducing agent, (c) a binder, (d) a specific phthalazine derivative and (e) an organic acid compound experience a minimized drop of image density when stored under warm humid conditions.

Abstract: An acetylene compound is used in a thermographic image-recording element comprising on a support an image-recording layer containing a non-photosensitive organic silver salt, a reducing agent therefor, and a thermoplastic polymer binder. The element can be heat developed at lower temperatures.

Abstract: A process for producing a photothermographic recording material having a support and a photo-addressable thermally developable element containing 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 including a water-soluble binder, a water-dispersible binder or a mixture of a water-soluble binder and a water-dispersible binder, comprising the steps of: (i) producing an aqueous dispersion or aqueous dispersions containing photosensitive silver halide, 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 and a binder including a water-soluble binder, a water-dispersible binder or a mixture of a water-soluble binder and a water-dispersible

Abstract: A photothermographic element has on a support, a photosensitive layer containing a non-photosensitive organic silver salt, a reducing agent, and photosensitive silver halide grains. Sharpness is improved when the volume of the photosensitive layer divided by the number of photosensitive silver halide grains in the photosensitive layer is in the range of 0.005-0.1 .mu.m.sup.3.

Abstract: Vinyl sulfone and/or .beta.-halo sulfone compounds have been found to improve fog stability on shelf aging of photothermographic imaging elements. These elements comprise a photosensitive silver halide, silver salt oxidizing agent and reducing agent for silver ion in a binder.

Abstract: A photothermographic recording material comprising a support and a photo-addressable thermally developable element comprising photosensitive siver 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 aliphatic carboxylic acid in thermal working relationship therewith and a binder, characterized in that the binder comprises a non-proteinaceous water-soluble binder, a non-proteinaceous water-dispersible binder (preferably a comprising a diene, styrene, an acrylate or a methacrylate monomer) or a mixture of a non-proteinaceous water soluble binder and a non-proteinaceous water-dispersible binder and the photo-addressable thermally developable element is capable of being coated from an aqueous medium and is capable of producing images stable to light without a wet-processing step; a process for producing the photothermographic recording material and a photo-thermographic

Abstract: A heat-developable image-recording material comprising, on a support, at least one image-forming layer containing an organic silver salt, a reducing agent, and a light-sensitive silver halide, and at least one protective layer provided on the image-forming layer, wherein the image-forming layer and the protective layer contain a polymer latex as a binder, and the polymer latex of the image-forming layer and/or the protective layer comprises a self-crosslinkable polymer latex.

Abstract: A photothermographic material exhibiting satisfactory photographic properties can be prepared using an aqueous dispersion of components. A photosensitive layer is formed by dispersing a binder and silver halide in an aqueous solvent containing at least 30 wt % of water to form an aqueous dispersion, coating the aqueous dispersion onto a support, and drying the coating. The binder is a polymer having an equilibrium moisture content of 0.1-2 wt % at 25.degree. C. and RH 60% or a thermoplastic resin. The binder is preferably based on a styrene-butadiene copolymer. Fog is suppressed even when the material is stored in a humid atmosphere.

Abstract: The invention provides a photothermographic material comprising a photosensitive silver halide, an organic silver salt, a reducing agent, and a binder on a support. A layer containing the organic silver salt has been formed by using a solid particle dispersion of the organic silver salt and a polymer latex as a main binder, preparing a coating solution of the salt and the binder in an aqueous solvent, and coating the solution, followed by drying. Coating operation is easy, and coating surface quality and photographic properties are improved.

Abstract: In a thermographic image-recording element comprising an image-forming layer and a protective layer on one side of a support, and optionally a back layer on the opposite side of the support, a polymer latex is used as a binder in each of the image-forming layer, the protective layer, and the back layer. The element experiences a minimized dimensional change before and after heat development. No wrinkling occurs upon heat development.

Abstract: A photothermographic material has a photosensitive layer containing a photosensitive silver halide, a binder, an organic silver salt and a reducing agent therefor on one surface of a support. An undercoat layer containing a styrene-butadiene copolymer is interleaved between the support and the photosensitive layer for improving the adhesion therebetween. The photosensitive layer is formed by applying an aqueous coating solution of the binder mainly composed of a polymer having an equilibrium moisture content of up to 2% by weight at 25.degree. C. and RH 60% and drying the coating.

Abstract: A (photo)thermographic recording material comprising a (photo-addressable) thermosensitive element on one side of a water resistant support and an outermost backside layer on the other side of the water resistant support, the (photo-addressable) thermosensitive element comprising a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith(, photosensitive silver halide in catalytic association with the substantially light insensitive organic silver salt) and a binder and the outermost backside layer comprising polymeric beads, characterized in that an outermost layer on the side of the water resistant support with the (photo-addressable) thermosensitive element does not contain a fluorine-containing polymeric surfactant and the static frictional coefficient between the outermost layer on the side of the water resistant support with the (photo-addressable) thermosensitive element and the o

Abstract: A recording material comprising a support and a thermosensitive element containing silver stearate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver stearate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio of the sum of the peak heights of the X-ray diffraction lines attributable to silver stearate at Bragg angles, 2.THETA., of 2.THETA., of 3.62.degree., 5.45.degree., 7.30.degree., 9.04.degree., 10.97.degree. and 12.71.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.

Abstract: This invention comprises a process for generating particles of MAg.sub.4 I.sub.5, wherein M is a monovalent cation, which comprises dissolving AgI and MI in a polar solvent followed by precipitating particles of MAg.sub.4 I.sub.5 by adding the solution to a nonpolar solvent. The resulting MAg.sub.4 I.sub.5 is in the form of anisotropic crystalline particles. The MAg.sub.4 I.sub.5 particles can be used in the preparation of a photothermographic element. The invention also comprises method of preparing a stable aqueous emulsion of MAg.sub.4 I.sub.5 particles.

Abstract: A photothermographic material contains an organic silver salt, a photosensitive silver halide, a reducing agent, a binder, and a compound of the formula: X--L.sub.1 --D wherein D is an electron donative group of atoms, X is an adsorption promoting group to silver halide, and L.sub.1 is a valence bond or a linking group. It has high sensitivity in the red to infrared region and experiences a minimal change of photographic properties under different developing conditions.

Abstract: The present invention provides a photothermographic material which can provide an image having a high sharpness, exhibits a good transparency, is less liable to fog and is unsusceptible to discoloration during storage. The present invention also provides a photothermographic material which can provide a less fogged image having a high sharpness without using any mercury compound. A photothermographic material is provided comprising an anti-irradiation pigment incorporated in a photosensitive layer and an anti-irradiation dye incorporated in at least one light-insensitive layer on the same side of a support as the photosensitive layer.

Abstract: A recording material comprising a support and a thermosensitive element comprising silver palmitate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver palmitate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio of the sum of the peak heights of the X-ray diffraction lines attributable to silver palmitate at Bragg angles, 2.THETA., of 4.01.degree., 6.049.degree., 8.031.degree., 10.06.degree., 12.08.degree. and 14.09.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.

Abstract: A thermographic recording element has a polyester-containing undercoat layer on a support and a thermographic recording layer, typically a photosensitive layer, on the undercoat layer. The undercoat layer enhances the adhesion between the support and the recording layer.

Abstract: A recording material comprising a support and a thermosensitive element containing silver behenate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio, normalized to a quantity of silver in the recording material of 1 g per m.sup.2 thereof, of the sum of the peak heights of the X-ray diffraction lines attributable to silver behenate at Bragg angles, 2.THETA., of 6.01.degree., 7.56.degree., 9.12.degree., 10.66.degree., 12.12.degree. and 13.62.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.3, determined with the same X-ray diffractometer in the same state of adjustment, is greater than 0.

Abstract: An imaging material is provided in the form of a photothermographic or thermographic image forming layer containing an organic silver salt on one surface of a support and further comprising a polyvalent metal ion and a phthalic acid compound on the image forming layer-bearing surface of the support. The imaging material has improved shelf stability before and after image formation and the ease of handling and produces high-quality blue black tone images.

Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating has a protective overcoat layer containing poly(silicic acid), a hydroxyl-containing monomer or polymer and an acrylate or methacrylate latex.

Abstract: A heat developable light-sensitive material comprising an organic acid silver and silver halide, which contains a compound represented by the following formula (A) and a hydrazine derivative: ##STR1## wherein R represents a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms and R' and R" each represents an alkyl group having from 1 to 5 carbon atoms.

Abstract: A thermographic recording element having at least one image forming layer contains an organic silver salt, a reducing agent, and a ballast group-bearing alkene compound. The element has high Dmax, high sensitivity, satisfactory contrast and minimized black pepper.

Abstract: Compounds having general structure (I) have been found to be useful as stabilizers in photothermographic elements. The photothermographic elements comprise a support bearing an imaging coating (specifically, a photosensitive, image-forming, photothermographic coating) comprising:(a) a photosensitive silver halide;(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) a compound having general structure (I) ##STR1## wherein X is O or S; and Y is NH.sub.2, OH, or O.sup.- M.sup.+ wherein M.sup.+ is a metal atom.The photothermographic elements may be used in medical imaging films or as a photomask in a process where there is a subsequent exposure of an ultraviolet or short wavelength visible radiation-sensitive imageable medium.

Abstract: A photothermographic material for a photomechanical process which is high in sensitivity and high in contrast and can provide an image low in Dmin by UV light, comprising a support having provided thereon a light-insensitive organic silver salt, a light-sensitive silver halide formed independently of the light-insensitive organic silver salt, and a binder, wherein the main binder of an image formation layer containing the light-sensitive silver halide is a polymer latex having a glass transition-temperature of 40.degree. C. or less, said image formation layer is formed by applying a coating solution in which 60% by weight or more of a solvent is water, and the light-sensitive silver halide is gold-sensitized silver halide grains having a silver chloride content of 80 mol % or more per silver halide.

Abstract: A photothermographic recording material comprising a photo-addressable thermally developable element including a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt, in a quantity of 0.1 to 35 mol % relative to the organic silver salt and spectrally sensitized to infra-red light with a dye, a supersensitizer for the dye, a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder, wherein the binder comprises a water soluble polymer, a water-dispersible polymer or a water soluble polymer and a water-dispersible polymer and the dye is represented by formula (I): ##STR1## wherein Z.sup.1 and Z.sup.2 independently represent S, O or Se; R.sup.1 and R.sup.

Abstract: A polyhalomethane compound represented by the following formula and a silver halide photosensitive material containing the same are disclosed. ##STR1## (Q.sub.1 represents a 1,2,4-triazole ring, etc., Z.sub.1 and Z.sub.2 each represents a halogen atom, Y represents --SO.sub.2 --, etc., and A represents a halogen atom, etc.)The polyhalomethane compound is useful as a highly active antifoggant which enables photosensitive materials, especially of the heat development type, to have excellent raw-stock storage stability and image storage stability when stored in a stacked state, without reducing sensitivity nor impairing color tone.

Abstract: In a photothermographic element comprising a photosensitive emulsion layer containing a non-photosensitive organic silver salt, a reducing agent, photosensitive silver halide grains, and a binder, (1) the coating weight (silver g/m.sup.2) of the non-photosensitive organic silver salt divided by the thickness of the photosensitive emulsion layer is 0.09-0.30 g/(m.sup.2 .multidot..mu.m), (2) the coating weight calculated as silver of the non-photosensitive organic silver salt divided by the number of photosensitive silver halide grains is 1.times.10.sup.-15 -1.times.10.sup.-14 g/grain, and (3) the silver halide grains have a mean equivalent spherical diameter of 10-50 nm. The element is improved in graininess, covering power and silver tone.

Abstract: A photothermographic material containing photosensitive silver halide grains, in which a cyanine dye containing at least one of an alkylthio group, an arylthio group, and a substituent group having a thioether bond is included, thereby the photographic material exhibiting low fogging, high sensitivity, and improved stability.

Abstract: In a photographic photothermographic material comprising a organic silver salt, a silver halide, and a reducing agent on a transparent support, a specific hydrazine derivative and a specific squarylium dye are contained in suitable photosensitive or non-photosensitive layers on the support. The material is improved in Dmax, contrast, resolution, and residual color after processing.

Abstract: A negative-acting photothermographic element comprises a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer that contains photosensitive silver halide grains doped with iridium and copper; a non-photosensitive, reducible source of silver; a reducing agent for the non-photosensitive, reducible source of silver; and a binder. A process of forming photothermographic emulsions from doped silver halide grains by forming silver soaps in the presence of those grains is also described.

Abstract: In a photothermographic element comprising a photosensitive layer containing an organic silver salt, a silver halide, and a reducing agent on one surface of a support, and a back layer on the other surface of the support, the outermost back layer is based on a polymer latex binder, and the back layer contains a dye of formula (I) satisfying a specific maximum absorption wavelength relationship. The element produces an image with high Dmax, ultrahigh contrast, satisfactory resolution, and minimized residual color.

Abstract: The present invention provides a heat-developable light-sensitive material having a support and a light-sensitive layer provided on the support. The heat-developable light-sensitive material contains dyes which are decolorized through reaction with a decolorizing agent during a development process. The dyes are non-diffusible and at least a part of decolorized dyes resulting from the development process is non-diffusible. Also provided is an image forming method using the heat-developable light-sensitive material. The present method provides images having excellent sharpness within a short period of time.

Abstract: A method of obtaining a photothermographic or thermographic film with reduced fog, such as pepper fog, comprises preparing a dispersion of: an oxidation-reduction image-forming combination comprising: a silver behenate oxidizing agent the improvement wherein said oxidizing agent contains less than about 800 micrograms of polyunsaturated and 3800 micrograms of monounsaturated fatty acid silver salts per gram of oxidizing agent or the film contains less than about 100 micrograms of polyunsaturated and 400 micrograms of monounsaturated fatty acid silver salts per gram of melt in the film and an organic reducing agent with a synthetic polymer-peptized photosensitive silver halide, and a cyclic imide toner in a non-gelatin polymeric binder.

Abstract: A camera-speed color photothermographic imaging method is disclosed. A photothermographic film is employed that contains a photographically responsive, thermally developable panchromatically sensitized emulsion layer unit capable of concurrently forming silver and dye image densities. The emulsion layer unit is exposed in three separate image capture areas to blue, green or red light received from the photographic subject to create latent images of blue, green and red light exposure. The photothermographic element is thermally processed to produce images of the same hue in each of the three separate image capture areas. The images of blue, green and red light exposures are then converted into a corresponding additive or subtractive primary hue, and integrated to provide a positive or negative color image of the photographic subject.

Abstract: A recording material exclusive of a thermal bleachable dye comprising a support and a thermosensitive element comprising an organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the recording material further contains non-halide-ion-containing arylonium compound exclusive of compounds according to formula (I): ##STR1## wherein L.sub.a is a valence bond or a divalent or trivalent linking group, L.sub.2 is an alkylene group, each of R.sub.a and R.sub.b is a hydrogen atom or monovalent substituent group, M.sub.1 is an onium ion, R.sub.a and R.sub.b may form a ring taken together and D is an electron donative group of atoms, with the proviso that where D is a hydrazino group which is not a part of a semicarbazido group, no oxo group is substituted to the carbon atom which is directly attached to a nitrogen atom of the hydrazine; and a recording process therefor.

Abstract: A method of obtaining a photothermographic or thermographic film with reduced fog, such as pepper fog, comprises preparing a dispersion of: an oxidation-reduction image-forming combination comprising: a silver salt oxidizing agent and an organic reducing agent with: a synthetic polymer-peptized photosensitive silver halide, and a cyclic imide toner in a non-gelatin polymeric binder and mixing with said dispersion a sensitizing concentration of non-silver iodide salt formed from an ionic formate the improvement wherein said non-silver iodide salt contains less than about 100 micrograms of ionic formate per gram of iodide salt or the film contains less than about 0.5 micrograms of ionic formate per gram of emulsion in the film.

Abstract: A photothermographic element comprising a photosensitive silver halide, an organic silver salt, a reducing agent, and a compound of formula (I) on a support has a high sensitivity and storage stability.Z.sup.1 --(W.sup.1).sub.m1 --L.sup.1 --S--S--L.sup.2 --(W.sup.2).sub.m2 --Z.sup.2 (I)L.sup.1 and L.sup.2 are divalent aliphatic hydrocarbon groups, W.sup.1 and W.sup.2 are divalent linking groups containing 0, S or N, Z.sup.1 is hydrogen, halogen, aliphatic hydrocarbon, aromatic or heterocyclic group, Z.sup.2 is an aromatic or heterocyclic group, m.sub.1 =0, 1, 2 or 3, and m.sub.2 =0, 1, 2 or 3.

Abstract: A photothermographic material is prepared by preparing an aqueous dispersion of a thermoplastic resin, adding an organic silver salt and a silver halide to the aqueous dispersion, further adding a ultrahigh contrast promoting agent to the aqueous dispersion to form an aqueous coating solution, applying the aqueous coating solution to a support, and heat drying the coating. Since the use of an aqueous dispersion enables the use of a polycarbonate support which originally has good dimensional stability to heat, a photosensitive material having good dimensional stability is manufactured in high yields.

Abstract: An infrared-sensitive photothermographic material comprising light-sensitive silver halide grains and a sensitizing dye having a particular structural formula.

Abstract: A heat developable photographic material comprising a reducible silver salt, a reducing agent, a contrast enhancer, and a binder further contains a thiosulfonic acid ester compound and/or a thiosulfonic acid compound. The material exhibits ultrahigh contrast and low fog and is minimized in the variation of photographic characteristics with heat development conditions.

Abstract: A photothermographic recording material comprising a support and a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith, photosensitive silver halide spectrally sensitized with a dye and in catalytic association with the substantially light-insensitive organic silver salt and a binder, wherein the photo-addressable thermally developable element further includes a hydrazine compound represented by the formula (I): ##STR1## wherein: Z represents the necessary atoms to close a heterocyclic ring which is either a five-membered ring containing at least two heteroatoms or a six-membered ring, which ring may carry one or more fused-on rings, and which ring must contain a C--H bond permitting oxidative aromatisation to an acyl-onium group by means of a hydride shift or a consecutive 2-electron-proton transfer; each of R.sup.1 and R.sup.

Abstract: A photothermographic material is provided wherein when it is exposed in an exposure dose of 30 .mu.J/cm.sup.2 and thermally developed at 120.degree. C. for 20 seconds, the resulting spheres of influence have an average radius of 0.01-0.35 .mu.m. The photothermographic material produces images undergoing minimal tone variations.

Abstract: A photothermographic material comprising at least one layer containing photosensitive silver halide grains on a support further contains a mono-, tri- or penta-methine cyanine dye having a thienyl or arylthio substituent. The material shows low fog, high sensitivity, and improved age stability.

Abstract: A photothermographic material comprising a photosensitive silver halide emulsion layer on one surface of a support is to be exposed to laser light having a wavelength of less than 700 nm. The silver halide of the emulsion layer has a grain size of 0.01-0.1 .mu.m. A suitable dye is contained in the emulsion layer such that the layer may have an absorbance of 0.3-1.2 at the exposure wavelength. An image containing minimized interference fringes is obtainable.

Abstract: 1. A thermographic imaging element comprising: (a) a support; and(b) an imaging layer comprising:(i) an oxidizing agent;(ii) a first reducing agent; and(iii) a second reducing agent comprising a boron compound containing at least one boron-hydrogen bond.