...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7977040 | Heat developable photosensitive material The present invention provides a heat developable photosensitive material comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions and binder on one surface of a support. ... | 07/12/2011 |
| 7622247 | Protective overcoats for thermally developable materials Mixtures of an alkyl vinyl ether/maleic anhydride copolymer or an alkylethylene/maleic anhydride copolymer with cellulose acetate provide protective overcoats for thermally developable materials. These protective overcoats exhibit good adhesion to the emulsion layer... | 11/24/2009 |
| 7442495 | Photothermographic material The invention provides a photothermographic material containing an image forming layer having at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one side of a support, an outermost layer on t... | 10/28/2008 |
| 7429447 | Photothermographic material and image forming method A photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive silver salt of a fatty acid, a reducing agent, and a binder, wherein 1) the photosensitive silver ... | 09/30/2008 |
| 7427467 | Silver salt photothermographic dry imaging material A silver salt photothermographic dry imaging material comprising a support having: (i) a photosensitive layer comprising photosensitive silver halide grains, an organic silver salt and a reducing agent for silver ions on one side of the support; and (ii) a backing l... | 09/23/2008 |
| 7419775 | Micro-particle dispersion having hydrophobic protective colloid and method of manufacture thereof, photosensitive emulsion and method of manufacturing thereof, and silver salt photohermographic dry imaging material utilizing the same A method of manufacturing a micro-particle dispersion having a hydrophobic protective colloid comprising the steps of: (a) dispensing micro-particles in a hydrophilic dispersant to form a hydrophilic micro-particle dispersion having the hydrophilic dispersant as a p... | 09/02/2008 |
| 7419774 | Photothermographic material and method for processing the same Disclosed is a photothermographic material comprising a support having disposed on a surface thereof, a non-photosensitive silver source, a photosensitive silver halide, and a reducing agent, and having disposed another surface thereof at least one non-photosensitiv... | 09/02/2008 |
| 7416838 | Photothermographic material The present invention provides a photothermographic material having, on one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and at least one non-ph... | 08/26/2008 |
| 7410745 | Photothermographic material and image forming method using same The invention provides a photothermographic material including: a support and an image-forming layer including a non-photosensitive silver salt, a photosensitive silver halide, a binder, and a reduction agent disposed on the support, wherein a silver iodide content ... | 08/12/2008 |
| 7410752 | Method of producing organic silver salt dispersion, and photothermographic material A method of producing an organic silver salt dispersion, the method comprising: mixing a first aqueous solution including a water-soluble silver ion supplier and a second aqueous solution including an alkali metal salt of an organic acid to form an organic silver sa... | 08/12/2008 |
| 7407741 | Photothermographic material The present invention provides a photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a first non-photosensitive organic silver salt, a reducing agent, and a binder, and a no... | 08/05/2008 |
| 7402380 | Photothermographic material A photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein 1) the binder includes a polymer late... | 07/22/2008 |
| 7396639 | Photothermographic material and image forming method The present invention provides a photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and a non-phot... | 07/08/2008 |
| 7396641 | Black and white photothermographic material The present invention provides a black and white photothermographic material having, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for silver ions, wherein the reducing agen... | 07/08/2008 |
| 7396638 | Photothermographic material and image forming method The present invention relates to a photothermographic material including, on a same surface of a support, a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the photosensitive silver halide has a silver i... | 07/08/2008 |
| 7393625 | Photothermographic material The present invention provides a photothermographic material having, on one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for the organic silver salt, and a bin... | 07/01/2008 |
| 7393626 | Photothermographic material and method for producing silver halide used for it The invention provides a photothermographic material including, on a same surface of a substrate, photosensitive silver halide grains, a non-photosensitive organic silver salt, a reducing agent and a binder, in which the photosensitive silver halide grains include i... | 07/01/2008 |
| 7384732 | Method of manufacturing a photothermographic material by aqueous coating and a photothermographic material prepared therewith The invention provides a method of manufacturing a photothermographic material excellent in coating stability with less haze in images, wherein the photothermographic material has, on at least one side of a support, an image forming layer containing at least a photo... | 06/10/2008 |
| 7381520 | Photothermographic material Provided is a photothermographic material comprising, on a support, at least a non-photosensitive layer, and an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein ... | 06/03/2008 |
| 7371785 | Erasable ink composition An erasable ink composition comprising water, a water-soluble organic solvent, and the following colorant, colorless resin particles and shear-thinning, viscosity-adjustment agent, characterized in that the colorless resin particles have a mean particle diameter sma... | 05/13/2008 |
| 7364841 | Silver salt photothermographic dry imaging material A silver salt photothermographic dry imaging material wherein said material has photographic speeds (1) and (2) determined based on the predetermined conditions and the photographic speed (2) is not more than 1/10 of the photographic speed (1... | 04/29/2008 |
| 7358038 | Black and white photothermographic material and image forming method The present invention provides a black and white photothermographic material having, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver i... | 04/15/2008 |
| 7348110 | Thermally developable imaging material A photothermographic material having a Dmin and Dmax optical density. The material includes a support having hereon one or more thermally-developable imaging layers which are developable to produce an image when the photothermographic material is thermally processed... | 03/25/2008 |
| 7335466 | Silver salt photothermographic dry imaging material, image recording method and image forming method for the same A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye.... | 02/26/2008 |
| 7332267 | Photothermographic material Disclosed is a photothermographic material comprising an image forming layer containing at least a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and a binder and a non-image forming layer on at least one surface of a suppor... | 02/19/2008 |
| 7326527 | Silver salt photothermographic dry imaging material and image forming method by use thereof A method of processing a photothermographic material by a thermal processor is disclosed, wherein the photothermographic material comprises on one side of a support a light-sensitive layer containing an organic silver salt, silver halide grains, a binder and a reduc... | 02/05/2008 |
| 7314706 | Photothermographic material and manufacturing method A photothermographic material containing an image forming layer having at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for the organic silver salt on one side of a support, and a first non-photosensitive layer ... | 01/01/2008 |
| 7309564 | Photothermographic material and image forming method A photothermographic material including, on at least one surface of a support, at least a photosensitive silver halide containing a silver iodide at 40 mol % or more, a non-photosensitive organic silver salt, and a reducing agent, wherein the photothermographic mate... | 12/18/2007 |
| 7309565 | Process for treating photothermographic dry imaging material Disclosed is an image forming process having the steps of exposing by an exposure device a photothermographic dry imaging material with a support having thereon an image forming layer containing photosensitive silver halide, a reducing agent for silver ions, a binde... | 12/18/2007 |
| 7303865 | Photothermographic material A photothermographic material including, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and a non-photosensitive layer, wherein th... | 12/04/2007 |
| 7303864 | Black and white photothermographic material and image forming method The invention provides a black and white photothermographic material comprising an image forming layer containing on at least one side of a support at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, a... | 12/04/2007 |
| 7291448 | Photothermographic material A photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and at least one non-photosensitive layer, wh... | 11/06/2007 |
| 7281868 | Heat developing apparatus and heat developing method The heat developing apparatus heats and conveys a film with a heat developing photosensitive material coated on one side of a supporting substrate and makes a latent image formed on the film visible, which includes a first zone composed of stationary guides 51 | 10/16/2007 |
| 7279273 | Photothermographic material The present invention provides a photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a first non-photosensitive organic silver salt, a reducing agent, and a binder, and a no... | 10/09/2007 |
| 7267933 | Image forming method using photothermographic material An image forming method using a photothermographic material including, on at least one surface of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, in which (1) the photother... | 09/11/2007 |
| 7267935 | Thermally developable materials stabilized with crown ethers Incorporating a crown ether-alkali metal complex cation of an enolate anion of an aldehyde having at least one electron withdrawing group in the alpha (α) position, provides thermally developable materials with imaging properties that have little change with change... | 09/11/2007 |
| 7264920 | Photothermographic material and image forming method A photothermographic material having, on both sides of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, and an image forming method utilizin... | 09/04/2007 |
| 7264919 | Mono-sheet heat-developable photosensitive material and method of forming image A mono-sheet heat-developable photosensitive material, which comprises a layer containing a light-sensitive silver halide, a light-insensitive organic fatty acid silver salt, a thermal developer and a binder on a support, and exhibits substantially no sensitivity af... | 09/04/2007 |
| 7262000 | Photothermographic material and image forming method for the photothermographic material A photothermographic material, comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein a total silver iodide content of the photosensitive silver halide is 40% by mole or more and thermal d... | 08/28/2007 |
| 7261999 | Photothermographic materials containing post-processing stabilizers 1,3-Diaryl-substituted urea compounds have been found to function as post-processing stabilizers in photothermographic materials. These compounds can be presented by the following Structure (I): wherein R1 | 08/28/2007 |