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5384238 Positive-acting photothermographic materials  
Positive-acting photothermographic elements suitable for use at contact speeds comprising a base layer having at least two layers thereon, which layers define a photosensitive medium comprising a...
5370987 Heat-developable photosensitive material  
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...
5370966 Surfactant dye-diffusion-transfer facilitating thermal solvents for image separation systems  
The invention discloses an aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element comprising radiation sensitive silver halide, a...
5368979 Thermally developable photosensitive element  
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...
5368978 Delamination systems for photographic print materials  
The objects of the invention are generally accomplished by a method of delaminating imaging materials comprising providing an imaging material comprising donor and receiver elements, heating said...
5366837 Image receiving sheet and image transferring method employing the image receiving sheet  
An image receiving sheet of the present invention for receiving a desired image thereon includes a support layer and an absorbing layer containing heat-meltable or thermoplastic particles. A...
5364733 Photothermographic elements with novel layer structures, each of which contains a thermally-diffusible oxidizable leuco dye and process for producing a color image from leuco dye  
A photothermographic element containing a transparent substrate having one major surface thereof containing the following layers sequentially coated thereon: an image-receiving layer; an...
5364732 Image forming method and image forming medium  
An image forming method, comprises the steps of, using an image forming medium containing a heat-diffusible coloring matter, a polymerizable polymer precursor and a polymerization initiator;...
5362620 Photographic material containing a mixture of silver halide emulsions  
The present invention discloses a photographic material comprising on a support a photosensitive layer containing a mixture of silver halide emulsions at least one of which is spectrally...
5362601 Heat-developable color photosensitive material  
A heat-developable photosensitive material includes an infrared-sensitive layer having a maximum spectral sensitivity at a wavelength of 700 nm or longer. A silver chlorobromide emulsion from...
5360695 Aqueous developable dye diffusion transfer elements containing solid particle thermal solvent dispersions  
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...
5356750 Dye releasing couplers for heat image separation systems  
An aqueous-developable photographic color diffusion transfer element comprising a single dimensionally stable support and one or more layers comprising radiation sensitive silver halide, thermal...
5354642 Polymeric couplers for heat image separation systems  
A process is disclosed for forming a dye image including the steps of: exposing a photographic element comprising a support bearing a light sensitive silver halide emulsion layer containing a...
5352561 Thermal solvents for heat image separation processes  
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...
5342729 Dye fixing element with protective layer containing borate compound  
Disclosed is a novel dye fixing element comprising a dye fixing layer on which a diffusive dye produced or released by developing a light-sensitive element containing at least (i) a...
5340689 Image-recording materials with cyclic 1,3-sulfur-nitrogen dye providing compounds  
There are disclosed dye-providing compounds comprising color coupler dyes substituted on the phenylene diamine portion with one or two cyclic 1,3 -sulfur-nitrogen groups. The dye-providing...
5336761 Heat-developable diffusion transfer color photographic material  
Disclosed is a diffusion transfer color photographic material at least having a light-sensitive silver halide, a binder, a non-diffusive dye donor compound capable of releasing or forming a...
5334489 Process for generation of squaric acid and for imaging, and imaging medium for use therein  
Acid can be generated by exposing a superacid precursor to actinic radiation effective to generate superacid from the superacid precursor and heating the superacid in admixture with a squaric acid...
5334482 Photographic element with gas permeable hydrophobic layer on backing layer  
A photographic element is described comprising a layer containing a hydrophilic low molecular weight compound on one surface of a support and a backing layer comprising a hydrophilic binder on the...
5328800 Color image forming method using silver halide, reducing agent, polymerizable compound and colorant  
The present invention provides 4 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material...
5328799 Thermographic and photothermographic imaging materials  
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...
5328811 Method of printing an image on a substrate particularly useful for producing printed circuit boards  
A method of printing an image on a substrate by applying to the substrate a film which is chemically activated by heat, and scanning the film by a beam of radiation according to the image to be...
5326684 Heat-developable color photosensitive material containing calcium in an amount of at least 2000 ppm based on total binder weight  
In a heat-developable color photosensitive material comprising a photosensitive silver halide, a dye providing compound, and a binder on a support, the content of calcium is controlled to 500 ppm...
5326667 Image forming method and light-sensitive material using silver halide, reducing agent and polymerizable compound  
The present invention provides 6 embodiments of a new image forming method. The image forming method uses a light-sensitive material and an image receiving material. The light-sensitive material...
5324627 Tetra-alkylammonium phenylsulfonylacetate thermal-dye-bleach agents  
A thermal-dye-bleach construction comprising a dye in association with a thermal dye-bleaching agent of general formula I: ##STR1## wherein: each of Ra and Rb are individually selected from:...
5316886 Heat developable photosensitive materials  
A heat developable photosensitive material is disclosed, comprising a support having thereon at least one photosensitive silver halide emulsion layer which contains (i) at least one compound...
5316887 Thermally developable photosensitive material  
There are disclosed color-providing compounds comprising two or more cyclic 1,3 sulfur-nitrogen groups and two or more color-providing moieties, i.e., complete dyes or dye intermediates, capable...
5306597 Dye fixing element  
A novel dye fixing element is provided comprising a dye fixing layer on which a diffusive dye produced or released by developing a light-sensitive element containing at least a light-sensitive...
5296331 Image receiving material containing particles of thermoplastic compound  
An image receiving material comprises an image receiving layer provided on a support. The image receiving layer contains particles of a thermoplastic compound. The image receiving layer has a...
5294514 Vacuum roll separation system for photographic paper  
The objects of the invention are generally accomplished by a method of delaminating imaging materials comprising providing an imaging material comprising donor and receiver elements, heating said...
5292611 Dye image forming method  
A method for forming a dye image with high contrast is provided, wherein a heat-processable light-sensitive material comprising a support having thereon a non-light-sensitive layer and a...
5290659 Light-sensitive material comprising light-sensitive layer, polymerizable layer and image formation accelerating layer provided on support  
A light-sensitive material contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or/and a cross-linkable polymer. According to the present invention, the...
5290660 Dye permeable polymer interlayers  
Blends of poly(caprolactone) and poly(vinyl chloride) have been found to have good dye permeability. They have been incorporated into photothermographic constructions as barrier interlayers and...
5286612 Process for generation of free superacid and for imaging, and imaging medium for use therein  
Acid can be generated by exposing a mixture of a superacid precursor and a dye to actinic radiation of a first wavelength which does not, in the absence of the dye, cause decomposition of the...
5278031 Process for thermochemical generation of squaric acid and for thermal imaging, and imaging medium for use therein  
Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which...
5278024 Positive imaging diffusion-transfer dry silver system using formazan dye  
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...
5275932 Thermal development accelerators for thermographic materials  
Thermal recording material containing a suitable substrate coated with an image forming layer. The image forming layer contains a thermally reducible source of silver, a 3-indazolinone or urea...
5275927 Photothermographic articles containing novel barrier layers  
Photothermographic articles containing interfacial barriers comprising a layer of a polymeric organic acid containing carboxyl and/or sulfo groups in direct contact with an adjacent layer...
5270145 Heat image separation system  
A process for forming a dye image including the steps of: (a) exposing a photographic element comprising a light sensitive silver halide emulsion layer containing a color coupler compound capable...
5270155 Dye diffusion transfer type heat developable color light-sensitive material  
A dye diffusion transfer type heat developable color light-sensitive material is described including a support having thereon at least three light-sensitive layers containing, in combination,...
5264321 Photothermographic elements with novel layer structures  
Various photothermographic elements are provided containing a transparent substrate; image receiving layers; dry silver layers; interlayers; and a translucent or opacifying layer. The translucent...
5264316 Light-sensitive material containing silver halide, reducing agent, polymerizable compound and base precursor  
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...
5262295 Heat-developable photosensitive material and image forming method making use of the heat-developable photosensitive material  
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...
5258279 Reversible redox-controlled imaging methods  
A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form....
5258282 Dry process, silver salt photosensitive member and method for forming image with the dry process, silver salt photosensitive member  
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...
5254434 Method of forming thermal transfer dye images  
Method of forming thermal transfer dye images comprising exposing a recording element comprising at least one layer of an organic photochemical imaging composition comprising a heat-diffusible dye...
5254428 Process for preparation of light-sensitive microcapsule  
A light-sensitive microcapsule contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a color image forming substance. Another light-sensitive...
5252425 Hard copy imaging system  
This invention relates to a full-color hard copy imaging system and a process, where a multiply photosensitive donor sheet, comprising clear polymeric or an opaque paper base, coated sequentially...
5250384 Light-sensitive heat-sensitive composition and recording material comprising same and image formation process using same  
A novel light-sensitive heat-sensitive composition is disclosed, comprising a photohardenable composition, a dye which discolors upon reacting with a base, and a base precursor. A novel...
5250386 Dry image-forming process  
A dry image-forming process is disclosed. The dry image-forming process of the invention comprises heat developing a light-sensitive material comprising a support having thereon at least a...