Bleaching Patents (Class 430/430)
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Patent number: 8278021Abstract: Disclosed is a method of producing a thin film transistor substrate having high light sensitivity, heat-resistance, impact resistance, and a photosensitive composition used by the same, the method including forming data wires on an insulating substrate, forming an organic insulating film on the data wires by applying a photosensitive composition comprising a terpolymer, where the terpolymer is derived from monomers of an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, or a mixture thereof, an unsaturated epoxy group-containing compound, and an olefinic compound.Type: GrantFiled: July 10, 2008Date of Patent: October 2, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hoon Kang, Jae-sung Kim, Yang-ho Jung, Hi-kuk Lee
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Patent number: 7351522Abstract: An object of the present invention is to provide a method of processing silver halide color paper that ensures (a) promptness such that finished prints can be handed at shop to customers, (b) small installation area for mini-labs, (c) processing solution stability capable of withstanding slack seasons, (d) normal image quality, (e) small replenishment solution amount and (f) inhibition of tar generation and sulfuration phenomenon occurrence. This object can be attained by a concentrated processing composition for color paper which has a concentrated processing composition for bleach replenishment of 3.0 or less in pH containing 0.3 mol/L or more of EDTA.Fe(III) ammonium, 0.3 mol/L or more of a sulfinic acid compound of specified structure and 0.5 mol/L or more of ammonium bromide and a concentrated processing composition for fixative replenishment of 4.0 or more in pH containing 0.7 mol/L of ammonium thiosulfate and 0.Type: GrantFiled: August 15, 2005Date of Patent: April 1, 2008Assignee: Fujifilm CorporationInventor: Kazuaki Yoshida
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Patent number: 7312013Abstract: This invention provides a photoreactive composition in which reaction of a hydrolyzable metal compound takes place by irradiation of light. A photoreactive composition, which comprises a hydrolyzable metal compound (A) comprising a metal atom and a hydrolyzable functional group bonded to the metal atom and, a compound (B) promoting reaction, polymerization or crosslinking of the compound (A) in the presence of oxygen by irradiation of light.Type: GrantFiled: April 9, 2002Date of Patent: December 25, 2007Assignee: Sekisui Chemical Co., Ltd.Inventors: Katsunori Takahashi, Hiroji Fukui, Kazuhiro Kawabata, Takeo Kuroda, Motokuni Ichitani, Yasuhiro Nakatani
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Patent number: 7108962Abstract: A photographic processing composition, containing at least one compound of formula (I) or (II): A1-X-L-Y-A2??(I) wherein A1 and A2 each are a specific aryl or aromatic heterocyclic group; L is a specific arylene or divalent aromatic heterocyclic group; X and Y each are a specific divalent group; the compound of (I) contains at least two of —SO3M or —CO2M, but not contains —N?N— or —SH; M is a hydrogen, alkali or alkali earth metal, ammonium, or pyridinium; wherein A11 is a specific tri- or tetra-valent aromatic hydrocarbon or aromatic heterocyclic group; A12 is an aryl or aromatic heterocyclic group; X1 is a divalent group; M1 is a hydrogen, alkali or alkali earth metal, ammonium, or pyridinium; the molecule of (II) does not contain —N?N— or —SH; n is 3 or 4; r and s each are 0 to 10, (r+s) is 2 or more.Type: GrantFiled: January 24, 2003Date of Patent: September 19, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Makoto Suzuki, Yasufimi Nakai
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Patent number: 6958208Abstract: Photographic processing of color photographic materials can be carried out using polyphosphonic acids or salts thereof in acidic “stop” solutions or wash solutions after color development. When used in acidic stop solutions, the polyphosphonic acid is preferably carried over into the bleaching solution to provide added stability of the bleaching agent. The acidic stop solutions can also include organic thiols that are used as bleaching accelerators when carried over into the bleaching solutions.Type: GrantFiled: October 30, 2003Date of Patent: October 25, 2005Assignee: Eastman Kodak CompanyInventors: Shirleyanne E. Haye, Janet M. Huston
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Patent number: 6919170Abstract: The present invention relates to methods useful for processing a color photographic material. A method of manufacturing a ferric 1,3-PDTA complex is provided. The method includes reacting ferrous bromide with unchelated 1,3-PDTA, thereby forming a ferrous 1,3-PDTA complex; and conducting an oxidation process wherein the ferrous 1,3-PDTA complex is converted to the ferric 1,3-PDTA complex. Also provided is a method of processing a silver halide color photographic material.Type: GrantFiled: February 28, 2002Date of Patent: July 19, 2005Assignee: Fuji Hunt Photographic Chemicals, Inc.Inventor: Haixing Wan
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Patent number: 6828084Abstract: A photographic bleaching composition has reduced odor and acceptable storage stability. It comprises an iron-ligand complex bleaching agent, a rehalogenating agent, and a phthalic acid or salt thereof. This bleaching composition can be used in various photographic processing protocols to provide color images from color photographic silver halide materials, especially photographic color papers. The bleaching step can also be preceded by an acidic stop that also includes a phthalic acid or salt thereof.Type: GrantFiled: October 27, 2003Date of Patent: December 7, 2004Assignee: Eastman Kodak CompanyInventors: Shirleyanne E. Haye, Janet M. Huston, Eric R. Schmittou, Therese M. Feller
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Patent number: 6824965Abstract: A bleach or bleach/fixing solution for processing photographic silver halide materials which, relative to the silver halide content of the unprocessed material, exhibit prior to the bleaching step a content of silver arising from development of at least 65 mol %, in particular for processing color reversal materials, characterized in that the solution contains at least one iron complex of propylenediaminetetraacetic acid or of &bgr;-alaninediacetic acid or a mixture of these complexes and the total concentration of the stated iron complexes in the solution is at least 0.045 and at most 0.25 mol/l and a process for processing, in which such a solution is used, is characterized by a small introduced quantity of iron complexes, a low residual silver content, a low bleaching fog value, elevated resistance to precipitation and in that the bleach solution may be rejuvenated.Type: GrantFiled: August 1, 2001Date of Patent: November 30, 2004Assignee: AGFA-GevaertInventors: Ralf Wichmann, Thomas Hübsch, Thomas Stetzer
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Patent number: 6811930Abstract: A post-exposure treatment method of a silver halide emulsion layer in the manufacture of a hologram, a hologram manufacturing using the post-exposure treatment method, and a holographic optical element including the hologram are provided. The post-exposure treatment method of a silver halide emulsion layer involves: pre-hardening the silver halide emulsion layer after exposure; developing the pre-hardened silver halide emulsion layer using a developer solution; bleaching the developed silver halide emulsion layer; hardening the bleached silver halide emulsion layer; drying the hardened silver halide emulsion layer; surface-hardening the dried silver halide emulsion layer; fixing the hardened silver halide emulsion layer; treating the fixed silver halide emulsion layer using warm water; and drying the silver halide emulsion layer which has been treated using warm water.Type: GrantFiled: May 28, 2002Date of Patent: November 2, 2004Assignee: Samsung Electronics Co., Ltd.Inventor: Jong-man Kim
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Patent number: 6790600Abstract: A method of processing photographic color papers is carried out using a photographic bleach-fixing composition in a bleach-fixing step that is carried out for less than 60 seconds. The bleach-fixing composition comprises certain aliphatic or aromatic sulfur-containing compounds that include a —N═C(SH)—group. The bleach-fixing composition can be prepared from a two-part bleach-fixing kit having two solutions that can be added directly to a processing chamber or premixed to form a replenisher solution.Type: GrantFiled: February 7, 2003Date of Patent: September 14, 2004Assignee: Eastman Kodak CompanyInventors: Paul A. Schwartz, Valerie L. Kuykendall, Eric R. Schmittou, Leif P. Olson, Susan M. Flavin
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Publication number: 20040157153Abstract: Disclosed is a method of forming an image on a light sensitive planographic printing plate material comprising a hydrophilic support and provided thereon, a light sensitive layer containing an addition polymerizable ethylenically unsaturated monomer, a photopolymerization initiator, a polymer binder, and a sensitizing dye having an absorption maximum in the wavelength regions of from 390 to 430 nm, the minimum laser exposure amount necessary to form an image on the material being from 1.Type: ApplicationFiled: January 16, 2004Publication date: August 12, 2004Applicant: Konica Minolta Holdings, Inc.Inventor: Yasuhiko Takamuki
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Publication number: 20040137383Abstract: The invention provides a method of photographic processing, comprising the steps of applying a first component of a processing solution to the surface of a silver halide photographic material to be processed and applying a second component of the processing solution to the surface of photographic material to be processed. When the applied first and second components have mixed together, the processing solution is active to oxidise silver in the photographic material. The invention also provides a photographic processor suitable for carrying out the method.Type: ApplicationFiled: March 15, 2004Publication date: July 15, 2004Applicant: Eastman Kodak CompanyInventor: John R. Fyson
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Publication number: 20040110100Abstract: The invention provides a method of photographic processing, comprising the step of applying a layer of a catalyst to the surface of a developed silver halide photographic material to promote aerial oxidation of silver within the photographic material. The catalyst promotes aerial oxidation of silver enabling a reduction in the amount of chemistry required.Type: ApplicationFiled: November 5, 2003Publication date: June 10, 2004Applicant: Eastman Kodak CompanyInventor: John R. Fyson
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Publication number: 20040086810Abstract: A photographic bleaching composition has reduced odor and acceptable storage stability. It comprises an iron-ligand complex bleaching agent, a rehalogenating agent, and a phthalic acid or salt thereof. This bleaching composition can be used in various photographic processing protocols to provide color images from color photographic silver halide materials, especially photographic color papers. The bleaching step can also be preceded by an acidic stop that also includes a phthalic acid or salt thereof.Type: ApplicationFiled: October 27, 2003Publication date: May 6, 2004Inventors: Shirleyanne E. Haye, Janet M. Huston, Eric R. Schmittou, Therese M. Feller
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Publication number: 20040063044Abstract: A photographic bleaching composition has reduced odor and acceptable storage stability. It comprises an iron-ligand complex bleaching agent, a rehalogenating agent, and a phthalic acid or salt thereof. This bleaching composition can be used in various photographic processing protocols to provide color images from color photographic silver halide materials, especially photographic color papers. The bleaching step can also be preceded by an acidic stop that also includes a phthalic acid or salt thereof.Type: ApplicationFiled: September 27, 2002Publication date: April 1, 2004Applicant: Eastman Kodak CompanyInventors: Shirleyanne E. Haye, Janet M. Huston, Eric R. Schmittou, Therese M. Feller
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Publication number: 20030224300Abstract: A photographic processing composition for silver halide color photographic lightsensitive material, comprising at least one compound represented by the formula (I):Type: ApplicationFiled: June 18, 2003Publication date: December 4, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Makoto Suzuki, Yasufumi Nakai, Yoshiharu Yabuki
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Patent number: 6645696Abstract: The use of selected buffering amines in a photoimageable composition prevents process bias which with conventional photoresists causes designed features to be distorted, especially in corners and high resolution features. It is believed that the amines react with the catalysts, e.g., photoacids, generated to create an inert salt. The presence of the amines also increases resolution. Suitable photoimageable compositions includes: (a) a multifunctional polymeric epoxy resin that is dissolved in an organic solvent wherein the epoxy resin comprises oligomers of bisphenol A that is quantitatively protected by glycidyl ether and wherein the oligomers have an average functionality that ranges from about 3 to 12; (b) a photoactive compound; and (c) an amine that is selected from the group consisting of triisobutylamine, 1,8-bis(dimethylamino)naphthalene (also known as PROTON SPONGET™), 2,2′-diazabicyclo[2.2.2] octane and mixtures thereof.Type: GrantFiled: November 30, 2001Date of Patent: November 11, 2003Assignee: Euv LLC.Inventors: Kelby Liv Simison, Paul Dentinger
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Publication number: 20030203324Abstract: A color image forming method is disclosed, comprising exposing a silver halide color photographic material and developing the exposed photographic material at 43 to 180° C. to form a color image, wherein when the photographic material is exposed so that the light-sensitive layer has a transmission density of a minimum density plus 0.1, the light-sensitive layer comprises dye-clouds having an average diameter of 3.0 to 20.0 &mgr;m. There is also disclosed a digital image forming process, wherein image recording information of the photographic material which was formed by use of the color image forming method is converted to digital image information through an image sensor.Type: ApplicationFiled: March 26, 2003Publication date: October 30, 2003Inventors: Noriyuki Kokeguchi, Hiroyuki Hoshino, Hiromoto Ii
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Publication number: 20030198902Abstract: A photographic processing composition, containing at least one compound of formula (I) or (II):Type: ApplicationFiled: January 24, 2003Publication date: October 23, 2003Inventors: Makoto Suzuki, Yasufimi Nakai
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Publication number: 20030173298Abstract: The present invention relates to a method for processing an exposed color silver halide photographic paper in processing units having a color paper throughput greater than 200 m2/h comprising the circulation of negative color paper in:Type: ApplicationFiled: February 25, 2003Publication date: September 18, 2003Applicant: Eastman Kodak CompanyInventors: Didier J. Martin, Tanneguy De Poulpiquet
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Publication number: 20030165782Abstract: The present invention relates to methods useful for processing a color photographic material. A method of manufacturing a ferric 1,3-PDTA complex is provided. The method includes reacting ferrous bromide with unchelated 1,3-PDTA, thereby forming a ferrous 1,3-PDTA complex; and conducting an oxidation process wherein the ferrous 1,3-PDTA complex is converted to the ferric 1,3-PDTA complex. Also provided is a method of processing a silver halide color photographic material.Type: ApplicationFiled: February 28, 2002Publication date: September 4, 2003Inventor: Haixing Wan
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Publication number: 20030148231Abstract: A process for removing stain in a photographic material is described which process comprises incorporation of at least one compound of the formula (I) 1Type: ApplicationFiled: November 20, 2002Publication date: August 7, 2003Inventors: Christophe Bulliard, Georges Metzger, Sonia Megert
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Patent number: 6569585Abstract: Improved processes and products for laser thermal imaging are described. These improved processes and products utlilize an image rigidification element and significantly reduce halftone dot movement, swath boundary cracking and banding.Type: GrantFiled: July 3, 2002Date of Patent: May 27, 2003Assignee: E.I. du Pont de Nemours and CompanyInventors: Jonathan V. Caspar, Harvey Walter Taylor, Jr., Gregory C. Weed, Rolf S. Gabrielsen
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Publication number: 20030054298Abstract: A photographic processing composition for silver halide color photographic lightsensitive material, comprising at least one compound represented by the formula (I):Type: ApplicationFiled: March 29, 2002Publication date: March 20, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Makoto Suzuki, Yasufumi Nakai, Yoshiharu Yabuki
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Publication number: 20020192567Abstract: A post-exposure treatment method of a silver halide emulsion layer in the manufacture of a hologram, a hologram manufacturing using the post-exposure treatment method, and a holographic optical element including the hologram are provided. The post-exposure treatment method of a silver halide emulsion layer involves: pre-hardening the silver halide emulsion layer after exposure; developing the pre-hardened silver halide emulsion layer using a developer solution; bleaching the developed silver halide emulsion layer; hardening the bleached silver halide emulsion layer; drying the hardened silver halide emulsion layer; surface-hardening the dried silver halide emulsion layer; fixing the hardened silver halide emulsion layer; treating the fixed silver halide emulsion layer using warm water; and drying the silver halide emulsion layer which has been treated using warm water.Type: ApplicationFiled: May 28, 2002Publication date: December 19, 2002Applicant: Samsung Electronics Co., Ltd.Inventor: Jong-Man Kim
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Publication number: 20020187441Abstract: Concentrated aqueous photographic fixing compositions include a photographic fixing agent and a compound represented by Structure I 1Type: ApplicationFiled: June 5, 2002Publication date: December 12, 2002Inventors: Jean M. Buongiorne, Mary E. Craver, Ramanuj Goswami
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Patent number: 6482579Abstract: Color negative photographic elements can be effectively processed to provide negative color images using bleaching or bleach-fixing compositions in which the primary bleaching agent is a ferric complex of 1,3-propylenediaminetetraacetic acid or a salt thereof. Any potential precipitation of the bleaching agent is inhibited by the presence of at least 0.005 mol/l of an organic polyphosphonic acid, an aminopolysuccinic acid, or a polycarboxylic acid containing at least one hydroxy group as a compound. This compound can be added directly to the bleaching or bleach-fixing composition or introduced from carryover from a previous photoprocessing step.Type: GrantFiled: February 5, 2001Date of Patent: November 19, 2002Assignee: Eastman Kodak CompanyInventors: Jon A. Kapecki, Harry J. Price, David M. Braitsch
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Publication number: 20020146652Abstract: A concentrated black-and-white photographic developing composition has improved stability, is compatible with the environment and provides desired sensitometric properties with a combination of particular antifoggants. These antifoggants include a mercapto-substituted tetrazole and a benzimidazole that has one or more electron withdrawing groups. This concentrated composition can be used as a first “part” and mixed, upon dilution, with a diluted second “part” that is a concentrated composition of a gelatin hardening agent. When mixed together, the two diluted concentrates form a working strength developing composition that can be used to provide black-and-white images in various photographic silver halide materials, and particularly in radiographic films.Type: ApplicationFiled: January 24, 2001Publication date: October 10, 2002Applicant: Eastman Kodak CompanyInventors: Alan S. Fitterman, Joan F. Rachel
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Patent number: 6451519Abstract: A ferric-EDTA bleach regenerator composition can be mixed with bleach overflow to provide a bleach replenisher for reversal color silver halide photographic processes. The bleach regenerator composition has a critically controlled pH between about 6.0 and about 6.5, and comprises a total bromide ion concentration of at least about 210 g/l, and ferric ion in an amount of at least about 50 g/l. At least 50% of the bleach overflow and the bleach regenerator composition are mixed in at least a 1:1 volume ratio. After pH adjustment to from about 5.4 to about 5.6, the pH adjusted replenisher is supplied to the bleach tank for use in the process.Type: GrantFiled: January 3, 1997Date of Patent: September 17, 2002Assignee: Eastman Kodak CompanyInventors: Mary Ellen Craver, Jean Marie Buongiorne, Michael John Haight
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Patent number: 6440653Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprises developing the material with a developer solution containing a silver halide developing agent, applying to the surface of the developed material a solution of a sulphite compound that reacts with oxidised developing agent and prevents further development, and applying to the surface of the developed material a solution of an oxidant that oxidises any remaining developing agent, wherein said sulphite compound is present in an amount sufficient to react with all the oxidised developing agent and said solutions of sulphite and oxidant are applied to the material by means other than immersion in a tank.Type: GrantFiled: May 10, 2001Date of Patent: August 27, 2002Assignee: Eastman Kodak CompanyInventors: John R. Fyson, Louis E. Friedrich
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Publication number: 20020098450Abstract: Method of restoring black-and-white picture under aging phenomena includes ethylene alcohol wipe process proceeded to wipe a surface of photograph dry plate or negative film taken the black-and-white picture and preserved for a long term by ethylene alcohol and allow it to dry; silver mirror removal process proceeded to wipe and drop a silver part on the surface of image of the photograph dry plate or negative film by silver mirror removal liquid after the ethylene alcohol wipe process is proceeded; and tail end process proceeded such that the photograph dry plate or negative film removed the silver mirror in the removal process is washed in clear water by water or stream and it can be dried.Type: ApplicationFiled: January 25, 2001Publication date: July 25, 2002Applicant: Photo Murabayashi Ltd.Inventor: Takao Murabayashi
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Publication number: 20020090581Abstract: An aqueous photographic bleach solution comprises, as primary oxidant, in a concentration eg from about 0.1 to about 1 Molar of a transition metal oxidizing agent and, as secondary oxidant, from about 0.03 to about 0.15 Molar of a persulphate or from about 0.1 to about 0.8 Molar of a peroxide. The primary oxidant is preferably a ferric complex of an aminopolycarboxylic acid such as ethylene diamine tetraacetic acid (EDTA), propylene diamine tetraacetic acid (PDTA), diethylene triamine pentaacetic acid (DTPA), or a substituted imino diacetic acid such as methyl imino diacetic acid (MIDA). The peroxide can be provided by a compound that liberates peroxide under the bleach conditions. The solutions of the invention are particularly suitable for use with a single use surface application device in which a small volume of the solution is used once and then discarded.Type: ApplicationFiled: October 3, 2001Publication date: July 11, 2002Applicant: Eastman Kodak CompanyInventors: Peter J. Twist, John R. Fyson
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Publication number: 20020081535Abstract: A method of delivering processing solution to a processing device wherein the processing solutions are provided within sealed members fixedly arranged on a movable web. The web moves relative to the processing area and the sealed members are ruptured when the processing solution within is required.Type: ApplicationFiled: December 5, 2001Publication date: June 27, 2002Applicant: Eastman Kodak CompanyInventor: Peter J. Twist
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Patent number: 6410202Abstract: An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and an infrared radiation sensitive dye having multiple quaternary ammonium groups. The heat-sensitive polymer and IR dye can be formulated in water or water-miscible solvents to provide highly thermal sensitive imaging compositions. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered “switchable” in response to heat, and provides a lithographic image without wet processing.Type: GrantFiled: August 31, 1999Date of Patent: June 25, 2002Assignee: Eastman Kodak CompanyInventors: James C. Fleming, Jeffrey W. Leon, David A. Stegman, Kevin W. Williams
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Publication number: 20020051946Abstract: Color negative photographic elements can be effectively processed to provide negative color images using bleaching or bleach-fixing compositions in which the primary bleaching agent is a ferric complex of 1,3-propylenediaminetetraacetic acid or a salt thereof. Any potential precipitation of the bleaching agent is inhibited by the presence of at least 0.005 mol/l of an organic polyphosphonic acid, an aminopolysuccinic acid, or a polycarboxylic acid containing at least one hydroxy group as a compound. This compound can be added directly to the bleaching or bleach-fixing composition or introduced from carryover from a previous photoprocessing step.Type: ApplicationFiled: February 5, 2001Publication date: May 2, 2002Applicant: Eastman Kodak CompanyInventors: Jon A. Kapecki, Harry J. Price, David M. Braitsch
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Publication number: 20020051947Abstract: Color reversal photographic elements can be effectively processed to provide positive color images using bleaching compositions in which the primary bleaching agent is a ferric complex of 1,3-propylenediaminetetraacetic acid or a salt thereof. Any potential precipitation of the bleaching agent is inhibited by the presence of at least 0.005 mol/l of an organic polyphosphonic acid, an aminopolysuccinic acid, or a polycarboxylic acid containing at least one hydroxy group as a compound. This compound can be added directly to the bleaching composition or introduced from carryover from a previous photoprocessing step, such as a prebleaching step using color reversal processing.Type: ApplicationFiled: August 30, 2001Publication date: May 2, 2002Inventors: Harry J. Price, William G. Henry
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Patent number: 6376161Abstract: An image information recording method is disclosed. The method comprises the steps of imagewise exposed to light a silver halide photographic light-sensitive material comprising a support having thereon a light-sensitive layer comprising light-sensitive silver halide and a coupler, color developing the image wise exposed silver halide photographic light-sensitive material, converting the image information formed on the silver halide photographic light-sensitive material to electric information while the light-sensitive material is wetted without a drying and at least a part of developed silver is remained in the light-sensitive material, and recording the image information on another recording medium according as electric image information.Type: GrantFiled: March 7, 2001Date of Patent: April 23, 2002Assignee: Konica CorporationInventors: Yoshiko Iwai, Shigeto Hirabayashi
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Patent number: 6365332Abstract: Color reversal photographic elements can be effectively processed to provide positive color images using bleaching compositions in which the primary bleaching agent is a ferric complex of 1,3-propylenediaminetetraacetic acid or a salt thereof. Any potential precipitation of the bleaching agent is inhibited by the presence of at least 0.005 mol/l of an organic polyphosphonic acid, an aminopolysuccinic acid, or a polycarboxylic acid containing at least one hydroxy group as a compound. This compound can be added directly to the bleaching composition or introduced from carryover from a previous photoprocessing step, such as a prebleaching step using color reversal processing.Type: GrantFiled: September 7, 2000Date of Patent: April 2, 2002Assignee: Eastman Kodak CompanyInventors: Harry J. Price, William G. Henry
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Publication number: 20020037482Abstract: A bleach or bleach/fixing solution for processing photographic silver halide materials which, relative to the silver halide content of the unprocessed material, exhibit prior to the bleaching step a content of silver arising from development of at least 65 mol %, in particular for processing color reversal materials, characterized in that the solution contains at least one iron complex of propylenediaminetetraacetic acid or of &bgr;-alaninediacetic acid or a mixture of these complexes and the total concentration of the stated iron complexes in the solution is at least 0.045 and at most 0.25 mol/l and a process for processing, in which such a solution is used, is characterized by a small introduced quantity of iron complexes, a low residual silver content, a low bleaching fog value, elevated resistance to precipitation and in that the bleach solution may be rejuvenated.Type: ApplicationFiled: August 1, 2001Publication date: March 28, 2002Inventors: Ralf Wichmann, Thomas Hubsch, Thomas Stetzer
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Publication number: 20020022187Abstract: Improved processes and products for laser thermal imaging are described. These improved processes and products utlilize an image rigidification element and significantly reduce halftone dot movement, swath boundary cracking and banding.Type: ApplicationFiled: July 31, 2001Publication date: February 21, 2002Inventors: Jonathan V. Caspar, Harvey Walter Taylor, Gregory C. Weed, Rolf S. Gabrielsen
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Publication number: 20020015922Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprisesType: ApplicationFiled: May 10, 2001Publication date: February 7, 2002Applicant: Eastman Kodak CompanyInventors: John R. Fyson, Gareth B. Evans, Peter Hewitson, Jon A. Kapecki
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Publication number: 20010031432Abstract: A processing composition for a silver halide photographic material, which comprises at least one compound selected from the group consisting of compounds represented by the following general formulae (I) and (II): 1Type: ApplicationFiled: January 29, 2001Publication date: October 18, 2001Inventors: Yasufumi Nakai, Keizo Kimura, Shigeaki Tanaka, Yoshiharu Yabuki
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Patent number: 6200666Abstract: Thermal transfer articles of the invention comprising a carrier, optionally a release layer, a color layer releasably adhered thereto, and optionally an adherence layer on the bottom side of the color layer. Also graphic imaging compositions and methods for thermal transfer using such articles and compositions and graphic articles made by such methods. The transfer articles 1) exhibit thermoplastic, low cohesive properties during transfer such that good image resolution and transfer is achieved and 2) are radiation crosslinked after transfer such that a durable image is formed.Type: GrantFiled: July 25, 1996Date of Patent: March 13, 2001Assignee: 3M Innovative Properties CompanyInventors: Paul D. Christian, Nancy H. Phillips
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Patent number: 6197483Abstract: Color photographic silver halide materials, especially color photographic papers, are processed effectively with reduced iron retention after bleaching with a biodegradable bleaching composition. Bleaching is accomplished using an iron chelate of a biodegradable chelating ligand in the presence of a polyphosphonic acid. This bleaching step is followed by fixing using a fixing composition that includes a fixing agent and a polycarboxylic acid.Type: GrantFiled: December 18, 1998Date of Patent: March 6, 2001Assignee: Eastman Kodak CompanyInventors: Carl A. Marrese, Alaine M. Gray, David G. Foster
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Patent number: 6190843Abstract: The present invention relates to imaging elements, including photographic elements and recording media, having a protective overcoat that resists fingerprints, common stains, and spills. More particularly, the present invention provides a processing-solution-permeable protective overcoat that is water resistant in the final processed product. The overcoat, before formation of the image, comprises hydrophobic polymeric particles in a gelatin matrix. Subsequent treatment of the overcoat, after formation of the image, to remove the gelatin, causes coalescence of the hydrophobic particles, resulting in the formation of a water-resistant continuous protective overcoat.Type: GrantFiled: April 11, 2000Date of Patent: February 20, 2001Assignee: Eastman Kodak CompanyInventors: Hwei-Ling Yau, Thomas H. Whitesides, Elmer C. Flood, Amy E. Jasek
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Patent number: 6153364Abstract: Specific aromatic compounds having an extended planar .pi. system are useful as spectral sensitizing dye stain reducing agents in photographic processing compositions and methods for providing color or black-and-white images in various photographic silver halide materials. These compounds are devoid of diaminostilbene fragments or fused triazole nuclei. They are particularly useful in fixing and bleaching compositions in the processing of color photographic silver halide materials, but can be used in various other processing compositions.Type: GrantFiled: December 16, 1999Date of Patent: November 28, 2000Assignee: Eastman Kodak CompanyInventors: Ramanuj Goswami, Harry J. Price, Mary E. Craver
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Patent number: 6136516Abstract: A process for processing exposed photographic silver halide materials at least comprising the stages color development, stopping, bleaching and fixing using a bleaching bath with hydrogen peroxide as the active substance, characterized in that the stop bath contains as a buffer agent at least one carboxylic acid of the formulae I to VIII ##STR1## in which R.sub.1 to R.sub.5 mutually independently mean hydrogen, --OH, --COOM, --SO.sub.3 M, --PO(OM).sub.2, an optionally substituted alkyl residue, an optionally substituted aryl residue, an optionally substituted amino residue or a heterocyclic residue andM means hydrogen or an alkali metal atom and wherein at least one further acid group is present in the molecule, ##STR2## and at least one agent which stops development, is distinguished by improved bleaching action and the use of an environmentally friendly bleaching bath.Type: GrantFiled: May 26, 1999Date of Patent: October 24, 2000Assignee: Agfa-Gevaert N.V.Inventors: Thomas Fogel, Jurgen Gohmann, Norman Klaunzer
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Patent number: 6096487Abstract: Cyan dye density can be maximized in color developed silver halide photographic color materials and bleaching accelerated by contacting the materials with a bleaching or bleach-fixing composition comprising a mixture of a ferric complex of an aminopolycarboxylic acid as a bleaching agent, and an aromatic pyridinyl mono- or dicarboxylic acid in uncomplexed form. The molar ratio of the uncomplexed aromatic carboxylic acid to the ferric ion in the bleaching composition is from about 0.02:1 to about 0.8:1.Type: GrantFiled: March 2, 1999Date of Patent: August 1, 2000Assignee: Eastman Kodak CompanyInventor: David G. Foster
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Patent number: 6077650Abstract: Color photographic elements can be effectively processed to provide color images using biodegradable bleaching compositions in which the bleaching agent includes a pyridinecarboxylic acid or 2,6-pyridinedicarboxylic acid chelating ligand. The bleaching composition is stabilized by incorporation of an organic amine base instead of the conventional inorganic base.Type: GrantFiled: June 28, 1999Date of Patent: June 20, 2000Assignee: Eastman Kodak CompanyInventor: Harry J. Price
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Patent number: 6040122Abstract: A bleaching bath for processing photographic silver halide materials with hydrogen peroxide as the active substance, characterised in that it contains at least one organic compound having a sulfinic acid function and a further functional group with free electron pairs, is distinguished by improved bleaching action and makes it possible to achieve continuous processing of hard to bleach photographic materials having an elevated silver content.Type: GrantFiled: May 25, 1999Date of Patent: March 21, 2000Assignee: Agfa Gevaert NVInventors: Thomas Fogel, Jurgen Gohmann, Norman Klaunzer