Organic Carboxylic, Sulfur Or Phosphorus Acid Or Salt Patents (Class 430/529)
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Patent number: 6610469Abstract: The present invention provides a photothermographic material having an image-forming layer that contains a non-photosensitive silver salt of an organic acid, a photosensitive silver halide, a specific nucleating agent, a compound represented by the formula (1) and a binder on at least one side of a support: wherein P represents an oxygen atom, a sulfur atom or NH, Q represents an oxygen atom or a sulfur atom, Y represents OH, OM (M represents a counter ion) or NH2, L represents a divalent bridging group, and Z represents an alkyl group, an aryl group or a heterocyclic group.Type: GrantFiled: January 16, 2002Date of Patent: August 26, 2003Assignee: Fuji Photo Film, Co., Ltd.Inventor: Makoto Ishihara
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Publication number: 20030148232Abstract: A coating composition for use in forming an overcoat layer in a photographic element, said composition comprising an aqueous solution of: a mixture of two or more surfactants; a hydrophilic binder; matte beads; and a lubricating agent; wherein one of the surfactants is represented by the following Formula (I):Type: ApplicationFiled: May 28, 2002Publication date: August 7, 2003Inventors: Michael W. Orem, Ronald R. Andrews
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Publication number: 20030134236Abstract: A composition for an antistat layer comprising: a chlorinated polyolefin; a conductive agent; and a solvent.Type: ApplicationFiled: December 26, 2001Publication date: July 17, 2003Inventors: Debasis Majumdar, Richard A. Castle, Janglin Chen
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Publication number: 20030134212Abstract: An imaging element comprising: a support; at least one image forming layer; and an antistat layer, wherein said antistat layer comprises: a chlorinated polyolefin and a conductive agent.Type: ApplicationFiled: December 26, 2001Publication date: July 17, 2003Applicant: Eastman Kodak CompanyInventors: Richard A. Castle, Janglin Chen, Debasis Majumdar
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Publication number: 20030134211Abstract: An imaging material comprising a support having disposed thereon: a) at least one image-forming layer, and b) at least one transparent electrically conductive antistatic layer that comprises electronically conductive polymer particles, a neutral-charge conductivity enhancer, and a hydrophilic polymeric binder.Type: ApplicationFiled: December 26, 2001Publication date: July 17, 2003Applicant: Eastman Kodak CompanyInventors: Mark Lelental, Charles C. Anderson, John M. Pochan, James L. Wakley, James F. Elman
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Patent number: 6589723Abstract: A fluorocompound denoted by general formula (1) below (wherein R1 denotes a substituted or unsubstituted alkyl group having a total of at least six carbon atoms, with R1 not being an alkyl group substituted with a fluorine atom; Rf denotes a perfluoroalkyl group having not more than six carbon atoms; either X1 or X2 denotes a hydrogen atom and the other denotes SO3M; M denotes a cation; and n denotes an integer of not less than 1) was disclosed. A silver halide photographic light-sensitive material having at least one layer comprising a light-sensitive silver halide emulsion layer on a support and comprising a compound denoted by general formula (1) above was also disclosed.Type: GrantFiled: February 25, 2002Date of Patent: July 8, 2003Assignee: Fuji Film Co., Ltd.Inventors: Junichi Yamanouchi, Terukazu Yanagi, Tomokazu Yasuda, Nobuo Hamamoto
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Publication number: 20030113667Abstract: A planographic printing plate manufacturing method is disclosed which comprises the step of developing a presensitized planographic printing plate with a developer with a pH of from 11.5 to less than 12.5 which does not substantially contain an organic solvent, wherein the presensitized planographic printing plate comprises a support having a roughened hydrophilic surface with a center line average surface roughness Ra of from 0.5 to 0.8 &mgr;m, and provided thereon, a photopolymerizable light sensitive layer and an oxygen shielding layer in that order, the photopolymerizable light sensitive layer containing A) an addition polymerizable monomer having an ethylenic double bond, B) a photopolymerization initiator, C) a sensitizing dye, and D) a polymer binder, and the oxygen shielding layer containing E) polyvinyl alcohol and F) polyvinyl pyrrolidone.Type: ApplicationFiled: August 8, 2002Publication date: June 19, 2003Inventor: Toshiyuki Matsumura
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Patent number: 6566033Abstract: The invention relates to an imaging member and a method for use therewith comprising an imaging layer and a base wherein said base comprises a closed cell foam core sheet and adhered thereto an upper and lower flange sheet, and wherein said imaging member has a stiffness of between 50 and 250 millinewtons and is conductive.Type: GrantFiled: June 20, 2002Date of Patent: May 20, 2003Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Narasimharao Dontula, Suresh Sunderrajan, Peter T. Aylward, Kelly S. Robinson, Melvin M. Kestner
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Patent number: 6551769Abstract: A silver halide photographic film element has been disclosed, said element comprising on a light-sensitive side of a transparent polyester support, and, in order, an electrically conductive subbing layer, an antihalation undercoat, a light-sensitive emulsion layer or multilayer arrangement, optionally including one or more intermediate, non-light-sensitive layers between emulsion layers in said multilayer arrangement, and a protective overcoat; and on a backing layer side opposite thereto, in order, a subbing layer containing a lubricant and a topcoat layer, characterized in that on the light-sensitive side of said element said subbing layer comprises an antistatic agent providing a substantially unchanged electrical resistivity of the said element before and after processing of said material, and said antihalation undercoat optionally comprises a high temperature boiling solvent; whereas on the backing layer side a friction coefficient of the backing layer versus stainless steel remains unchanged in the rangType: GrantFiled: October 1, 2001Date of Patent: April 22, 2003Assignee: Agfa-GevaertInventors: Kris Viaene, Etienne Van Thillo, Hartwig Andries
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Patent number: 6521398Abstract: A polyester film is disclosed comprising on its upper side a latex subbing layer, and a gelatin subbing layer which contains a black spacing agent. This polyester film can be advantageously used as support for several imaging elements, such as photographic materials, (photo)thermographic materials, and ink jet recording elements.Type: GrantFiled: June 26, 2001Date of Patent: February 18, 2003Assignee: Agfa-GevaertInventors: Roland Claes, Etienne Van Thillo
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Publication number: 20030022113Abstract: A silver halide photographic material comrises a support having first and second opposing surfaces, at least one light-sensitive emulsion layer that is provided on the first surface side, and a hydrophilic colloid layer that is provided on the second surface side, wherein the hydrophilic colloid layer comprises at least one compound represented by general formula (I) or general formula (II) below: 1Type: ApplicationFiled: December 17, 2001Publication date: January 30, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Takahiro Goto
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Publication number: 20030013050Abstract: A coating composition comprising a solution of a substituted or unsubstituted thiophene-containing electrically-conductive polymer, a film-forming binder, and an organic solvent media; the media having a water content of less than 37 weight percent. Such a coating composition provides a means to protect an imaging element against the accumulation of static electrical charges before and after image processing while also providing the element with improved manufacturability and physical properties.Type: ApplicationFiled: June 26, 2001Publication date: January 16, 2003Inventors: Dwight W. Schwark, Debasis Majumdar, Charles C. Anderson, Robert J. Kress
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Publication number: 20030008247Abstract: Image-forming materials including photographic, thermographic, and thermally-developable imaging materials include one or more transparent electrically conductive, non-charging layers to provide antistatic control on one or both sides of subbed or unsubbed supports. The electrically conductive, non-charging layers comprise colloidal, electrically conductive polymer particles that can be dispersed in a film-forming binder in an amount to provide from about 10 to about 90 volume % of polymer particles. Particularly useful polymer particles include pyrrole-containing, thiophene-containing, and aniline-containing polymers. The particles generally exhibit a packed powder specific resistivity of 105 ohm-cm or less and generally have a mean diameter of 0.5 &mgr;m or less. The electrically conductive, non-charging layers generally exhibit a surface electrical resistivity of less than 1×1012 ohm per square.Type: ApplicationFiled: May 6, 2002Publication date: January 9, 2003Inventors: Mark Lelental, Gary M. Mosehauer, Roger J. Owers, James L. Wakley
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Publication number: 20020182533Abstract: The invention relates to a recording material for the production of offset printing plates having a web- or plate-form support, a radiation-sensitive layer on the front of the support and a continuous layer on its back. The back layer has a glass transition temperature Tg of at least 55° C. and a surface resistance of 106&OHgr; or less.Type: ApplicationFiled: March 1, 2002Publication date: December 5, 2002Inventors: Steffen Denzinger, Michael Dorr
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Patent number: 6475710Abstract: A photothermographic material is disclosed, comprising a light-sensitive silver halide, an organic silver salt, a reducing agent, a thiuronium salt and a binder, wherein the photothermographic material further contains at least one of compounds represented by formulas such asType: GrantFiled: January 17, 2001Date of Patent: November 5, 2002Assignee: Konica CorporationInventors: Shinji Kudo, Keiko Chigusa, Hiroshi Kashiwagi
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Patent number: 6475714Abstract: An image forming material comprising a support is disclosed. The support has, on at least one surface, a sublayer comprised of a styrenes-diolefin based copolymer, thereon an antistatic layer comprised of an electrically conductive composition prepared by mixing polymer particles having a functional group on the side chain with a water-soluble polymer, which interacts with said functional group, and thermally treating the resulting mixture at 50 to 90° C., and further having, on said antistatic layer, a layer comprised of a hydrophilic resin.Type: GrantFiled: March 2, 2001Date of Patent: November 5, 2002Assignee: Konica CorporationInventors: Tadashi Arimoto, Takayuki Sasaki, Eiichi Ueda, Yasuo Kurachi
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Patent number: 6472136Abstract: A method for forming a dispersion of an oil-soluble photographically useful compound in water or a hydrophilic colloid composition is disclosed, comprising dispersing the compound in the presence of a water-soluble anionic group containing polymeric surfactant, wherein the polymeric surfactant comprises a copolymer obtained from the copolymerization of a maleic anhydride monomer and a copolymerizable ethylenically unsaturated hydrophobic monomer and the anionic groups of the polymeric surfactant comprise primarily carboxy groups obtained upon base hydrolysis of the anhydride groups of the copolymer. The use of hydrolyzed maleic anhydride derived copolymers in place of conventional small-molecule surfactants as a dispersing agent to stabilize photographically active water-insoluble dye couplers or other organic oil-soluble photographically useful compounds enables a dramatic reduction of crystallization of such organic molecules on long-term keeping.Type: GrantFiled: September 5, 2001Date of Patent: October 29, 2002Assignee: Eastman Kodak CompanyInventors: Julia S. Tan, Kurt M. Schroeder, Delaina A. Amos
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Publication number: 20020123013Abstract: A silver halide photographic film element has been disclosed, said element comprising on a light-sensitive side of a transparent polyester support, and, in order, an electrically conductive subbing layer, an antihalation undercoat, a light-sensitive emulsion layer or multilayer arrangement, optionally including one or more intermediate, non-light-sensitive layers between emulsion layers in said multilayer arrangement, and a protective overcoat; and on a backing layer side opposite thereto, in order, a subbing layer containing a lubricant and a topcoat layer, characterized in that on the light-sensitive side of said element said subbing layer comprises an antistatic agent providing a substantially unchanged electrical resistivity of the said element before and after processing of said material, and said antihalation undercoat optionally comprises a high temperature boiling solvent; whereas on the backing layer side a friction coefficient of the backing layer versus stainless steel remains unchanged in the rangType: ApplicationFiled: October 1, 2001Publication date: September 5, 2002Inventors: Kris Viaene, Etienne Van Thillo, Hartwig Andries
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Patent number: 6440654Abstract: A photographic imaging element is disclosed which comprises a support having on one side thereof at least one silver halide emulsion layer and having, in order, on the opposite side thereof an electrically-conductive layer coated from a coating composition comprising a polythiophene/polyanion composition containing a polythiophene with conjugated polymer backbone component and a polymeric polyanion component, and a protective topcoat comprised of a polyurethane binder which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in2; wherein the electrical resistivity of the electrically-conductive layer before photographic processing is less than 2×109 &OHgr;/□, after photographic processing is between 1×109 &OHgr;/□ and 1×1011 &OHgr;/□, and increases by at least one order of magnitude as a result of photographic processing.Type: GrantFiled: April 3, 2001Date of Patent: August 27, 2002Assignee: Eastman Kodak CompanyInventors: Charles C. Anderson, Mario D. DeLaura, Debasis Majumdar
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Patent number: 6432606Abstract: A red sensitive photographic recording material is disclosed having an emulsion layer with low silver halide and low binder content. It further comprises a polyester support having subbing layers on both sides and an anti-halation layer on the back side.Type: GrantFiled: June 26, 2001Date of Patent: August 13, 2002Assignee: Agfa-GevaertInventors: Roland Claes, Stefaan Lingier, Etienne Van Thillo
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Patent number: 6387611Abstract: There is disclosed an oxidation-reduction imaging forming composition comprising an aqueous based dispersion of (i) nanoparticulate silver carboxylate particles having on the surface of the particles a surface modifier which is a phosphoric acid ester and (ii) an organic reducing agent. In particular, the surface modifiers can be mixtures of mono- and di-esters of orthophosphoric acid and hydroxyl-terminated, oxyethylated long-chain alcohols or oxyethylated alkyl phenols or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.Type: GrantFiled: January 18, 2001Date of Patent: May 14, 2002Assignee: Eastman Kodak CompanyInventors: Mark Lelental, David A. Dickinson, James L. Wakley, Michael W. Orem, Peter J. Ghyzel
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Patent number: 6355406Abstract: A process for forming an abrasion-resistant antistatic layer for an imaging element comprises: adjusting the pH of an aqueous composition of an electronically-conductive polymer to a pH of about 3 to about 10, and combining the pH-adjusted aqueous composition of the electronically-conductive polymer with an aqueous composition at a pH greater than 7 of a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi. The process further comprises applying the resulting coating composition to the imaging element, thereby forming an abrasion-resistant antistatic layer on the element. The antistatic layer coating composition of the present invention can be applied to a wide variety of imaging elements, including, for example, photographic, electrostatographic, photothermographic, migration, electrothermographic, dielectric recording and thermal-dye-transfer imaging elements.Type: GrantFiled: December 12, 2000Date of Patent: March 12, 2002Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Dennis J. Eichorst, Kenneth L. Tingler
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Patent number: 6346370Abstract: A photographic element having an antistatic layer comprising: a conductive agent, a colloidal sol, and a polymeric film-forming binder having a peel strength of 400 g or greater on a polypropylene surface.Type: GrantFiled: August 7, 2000Date of Patent: February 12, 2002Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Charles C. Anderson
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Publication number: 20020015925Abstract: An image forming material comprising a support is disclosed. The support has, on at least one surface, a sublayer comprised of a styrenes-diolefin based copolymer, thereon an antistatic layer comprised of an electrically conductive composition prepared by mixing polymer particles having a functional group on the side chain with a water-soluble polymer, which interacts with said functional group, and thermally treating the resulting mixture at 50 to 90° C., and further having, on said antistatic layer, a layer comprised of a hydrophilic resin.Type: ApplicationFiled: March 2, 2001Publication date: February 7, 2002Applicant: KONICA CORPORATIONInventors: Tadashi Arimoto, Takayuki Sasaki, Eiichi Ueda, Yasuo Kurachi
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Patent number: 6333145Abstract: A method for producing a polymeric conductive layer on an object comprising the steps of: providing an aqueous composition containing a polythiophene, a polyanion compound and an aprotic compound with a dielectric constant, &egr;, ≧15, applying said composition to said object forming a layer and drying said layer to form a conductive polymeric layer on said object, characterised in that during said production said object and said layer are kept at a temperature below 100° C. and said conductive polymeric layer has a resistivity of at most 2 k&OHgr;/square.Type: GrantFiled: November 4, 1999Date of Patent: December 25, 2001Assignee: Agfa-GevaertInventors: Tom Cloots, Johan Loccufier, Frank Louwet, Hieronymus Andriessen
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Publication number: 20010044492Abstract: A coating composition comprising a solution of an electrically-conductive polymer and an organic solvent media wherein the solvents are selected from the group consisting of alcohols, ketones, cycloalkanes, arenes, esters, glycol ethers and their mixtures; the media having a water content of less than 12 weight percent. Such a coating composition provides a means to protect an imaging element against the accumulation of static electrical charges before and after image processing while also providing the element with improved manufacturability and physical properties.Type: ApplicationFiled: June 13, 2001Publication date: November 22, 2001Inventors: Dwight W. Schwark, Debasis Majumdar, Charles C. Anderson, Robert J. Kress
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Patent number: 6316175Abstract: A silver halide photographic material has been provided, having in a layer arrangement at one or both sides of a subbed support, corresponding with a single-side coated or a double-side coated material respectively, one or more layer(s) comprising a light-sensitive silver halide emulsion, one or more protective antistress layer(s) and, optionally, an outermost afterlayer, wherein at least one of said layers, subbing layer(s) inclusive, further comprises means in order to provide, when conditioned at a relative humidity of at most 30%, an electrical resistance, measured as described in Research Disclosure June 1992, item 33840, of from 4×109 &OHgr;/sq. up to 5×1010 &OHgr;/sq. for the layer having the lowest resistance.Type: GrantFiled: February 22, 2000Date of Patent: November 13, 2001Assignee: Agfa-GevaertInventors: Marc Van den Zegel, Etienne Van Thillo, Bavo Muys
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Patent number: 6306572Abstract: A substantially light-insensitive black and white thermographic material including a support and a thermosensitive element, containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the binder is a water-dispersible film-forming polymer with covalently bonded moieties with one or more acid groups or anhydrides thereof and the thermographic material is thermally developable under substantially water-free conditions; and a process for producing the substantially light-insensitive black and white thermographic material comprising the steps of: producing an aqueous dispersion of the substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together the aqueous dispersion of the substantially light-insensitive organic silver salt, the reducing agent and the binder; and applying the one or more aqueous coating compositions to the support thereby forming after dryType: GrantFiled: August 17, 1998Date of Patent: October 23, 2001Assignee: Agfa-GevaertInventors: Carlo Uyttendaele, Huub Van Aert, Frank Louwet, Ivan Hoogmartens
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Patent number: 6303281Abstract: A silver halide photographic element comprises a support having thereon at least one light-sensitive silver halide emulsion layer and a light-insensitive protective layer, the light-insensitive protective layer comprising an ultraviolet absorbing layer closer to the support and an outermost protective layer, the ultraviolet absorbing layer comprising an ultraviolet aborbing dye, a high boiling organic solvent, and a hydrophilic binder, the outermost protective layer comprising insoluble matte particles having a mean particle size of larger than 0.5 &mgr;m, dispersed polymer particles having a mean size of less than 0.2 &mgr;m, and a glass transition temperature of at least 70° C., and a hydrophilic binder.Type: GrantFiled: February 21, 1996Date of Patent: October 16, 2001Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, Melvin Michael Kestner, Alfred Bruce Fant, Dennis Edward Smith
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Publication number: 20010029001Abstract: There is disclosed an oxidation-reduction imaging forming composition comprising an aqueous based dispersion of (i) nanoparticulate silver carboxylate particles having on the surface of the particles a surface modifier which is a phosphoric acid ester and (ii) an organic reducing agent. In particular, the surface modifiers can be mixtures of mono- and di-esters of orthophosphoric acid and hydroxyl-terminated, oxyethylated long-chain alcohols or oxyethylated alkyl phenols or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate.Type: ApplicationFiled: January 18, 2001Publication date: October 11, 2001Applicant: Eastman Kodak CompanyInventors: Mark Lelental, David A. Dickinson, James L. Wakley, Michael W. Orem, Peter J. Ghyzel
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Patent number: 6300049Abstract: The present invention can relate to an imaging element including a support, at least one image forming layer superposed on the support, at least one transparent magnetic recording layer superposed on the support, and an electrically-conductive layer superposed on the support. The electrically-conductive layer may include a sulfonated polyurethane film-forming binder and at least one metal antimonate particle.Type: GrantFiled: December 12, 2000Date of Patent: October 9, 2001Assignee: Eastman Kodak CompanyInventors: Dennis J. Eichorst, Debasis Majumdar, Robert J. Kress
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Patent number: 6300052Abstract: A substantially light-insensitive black and white thermographic material comprising a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the binder is a water-dispersible film-forming polymer having covalently bonded ionic groups and the thermographic material is thermally developable under substantially water-free conditions; and a process for producing the substantially light-insensitive black and white thermographic material comprising the steps of: producing an aqueous dispersion of the substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together the aqueous dispersion of the substantially light-insensitive organic silver salt, the reducing agent and the binder; and applying the one or more aqueous coating compositions to the support, thereby forming after drying the thermosensitive element.Type: GrantFiled: August 21, 1998Date of Patent: October 9, 2001Assignee: Agfa-GevaertInventors: Frank Louwet, Huub Van Aert, Frank Ruttens, Ivan Hoogmartens
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Publication number: 20010019813Abstract: The present invention can relate to an imaging element including a support, at least one image forming layer superposed on the support, at least one transparent magnetic recording layer superposed on the support, and an electrically-conductive layer superposed on the support. The electrically-conductive layer may include a sulfonated polyurethane film-forming binder and at least one metal antimonate particle.Type: ApplicationFiled: December 12, 2000Publication date: September 6, 2001Inventors: Dennis J. Eichorst, Debasis Majumdar, Robert J. Kress
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Publication number: 20010016303Abstract: A process for forming an abrasion-resistant antistatic layer for an imaging element comprises: adjusting the pH of an aqueous composition of an electronically-conductive polymer to a pH of about 3 to about 10, and combining the pH-adjusted aqueous composition of the electronically-conductive polymer with an aqueous composition at a pH greater than 7 of a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi. The process further comprises applying the resulting coating composition to the imaging element, thereby forming an abrasion-resistant antistatic layer on the element. The antistatic layer coating composition of the present invention can be applied to a wide variety of imaging elements, including, for example, photographic, electrostatographic, photothermographic, migration, electrothermographic, dielectric recording and thermal-dye-transfer imaging elements.Type: ApplicationFiled: December 12, 2000Publication date: August 23, 2001Inventors: Debasis Majumdar, Dennis J. Eichorst, Kenneth L. Tingler
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Patent number: 6225039Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support, a transparent magnetic recording layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer is composed of a sulfonated polyurethane film-forming binder and an electrically-conductive agent.Type: GrantFiled: October 15, 1998Date of Patent: May 1, 2001Assignee: Eastman Kodak CompanyInventors: Dennis J. Eichorst, Debasis Majumdar, Robert J. Kress
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Patent number: 6207361Abstract: The invention relates to a photographic film imaging material comprising at least one silver halide layer and a base material comprising at least one extruded layer comprising a polymeric anti-static material.Type: GrantFiled: December 27, 1999Date of Patent: March 27, 2001Assignee: Eastman Kodak CompanyInventors: Jehuda Greener, Debasis Majumdar, Thomas M. Laney
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Patent number: 6197486Abstract: The invention relates to a reflection photographic imaging material comprising at least one silver halide layer and a base material comprising at least one extruded layer comprising a polymeric antistatic material.Type: GrantFiled: December 27, 1999Date of Patent: March 6, 2001Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Jehuda Greener, Thomas M. Laney
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Patent number: 6190846Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer is composed of an electrically-conductive polymer and a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.Type: GrantFiled: October 15, 1998Date of Patent: February 20, 2001Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Dennis J. Eichorst, Kenneth L. Tingler
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Patent number: 6187521Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support; and at least one layer superposed on the support. The at least one layer superposed on the support is formed from a non-aqueous coating composition of a composite wax particle composed of a wax phase and a non-crosslinked polymer phase and an organic solvent. The wax phase includes a wax having a melting point of greater than 30° C. The wax comprises greater than 80% by weight of the wax phase. The wax phase to non-crosslinked polymer phase ratio is greater than 30/70 and less than 90/10.Type: GrantFiled: December 28, 1998Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark, James L. Bello
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Patent number: 6171769Abstract: The present invention is a photographic element including a support with a polyolefin resin layer, which is preferably polypropylene, on each surface of the support. The photographic element includes a print or backmark retaining and spliceable antistatic layer having a dry coverage of from 10 mg/m2 to 10,000 mg/m2 on one of the free surfaces of the polyolefin layers. An imaging layer may be superimposed on the other free surface of the polyolefin layers. The antistatic layer includes a (i) conductive agent, preferably a combination of an alkali metal salt and a polymerized alkylene oxide, (ii) colloidal silica, preferably aluminum modified colloidal silica and (iii) a polymeric film-forming binder with a peel strength of 200 g or above on a polypropylene surface on which the antistatic layer of the present invention is to be formed.Type: GrantFiled: May 6, 1999Date of Patent: January 9, 2001Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Charles C. Anderson
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Patent number: 6168911Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer includes an electrically-conductive particle having an average particle size less than 0.1 micrometer and a binder, said binder comprising at least 25 weight percent of a polyesterionomer.Type: GrantFiled: December 18, 1998Date of Patent: January 2, 2001Assignee: Eastman Kodak CompanyInventors: Mark Lelental, John M. Noonan, Ralph H. Young
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Patent number: 6162596Abstract: An imaging element comprising;a support;at least one image forming layer superposed on the support; and anelectrically-conductive layer superposed on the support; said electrically-conductive layer comprising a substituted or unsubstituted thiophene-containing electrically-conductive polymer and a cellulosic polymer binder. Such an electrically-conductive layer provides protection against the accumulation of static electrical charges before and after image processing and provides improved physical properties.Type: GrantFiled: August 30, 1999Date of Patent: December 19, 2000Assignee: Eastman Kodak CompanyInventors: Dwight W. Schwark, Debasis Majumdar, Charles C. Anderson, Robert J. Kress
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Patent number: 6153368Abstract: A photographic element which includes a support having a frontside and a backside, at least one silver halide emulsion layer superposed on the frontside of the support; and a protective overcoat layer superposed on the backside of the support. The protective overcoat layer is formed from a coating solution comprising a continuous liquid organic medium having therein a mixture of dispersed core/shell polymer particles and a soluble polymer. The core/shell polymer particles comprise a core portion, which is insoluble in the organic medium, and a shell portion which has an affinity for both the core portion and the organic medium and has an acid number of from 25 to 200. The soluble polymer has an acid number of from 70 to 500 and the acid number of the soluble polymer is greater than the acid number of the shell of the core/shell polymer particles.Type: GrantFiled: November 1, 1999Date of Patent: November 28, 2000Assignee: Eastman Kodak CompanyInventors: Dwight W. Schwark, Yongcai Wang, Charles C. Anderson
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Patent number: 6140030Abstract: In accordance with the present invention a photographic element contains a first electrically-conductive layer and a second electrically-conductive layer. The first conductive layer has an electrical resistivity of less than 1.times.10.sup.9 .OMEGA./.quadrature. before film processing and an electrical resistivity of greater than 1.times.10.sup.11 .OMEGA./.quadrature. after film processing. The second conductive layer has an electrical resistivity of between 1.times.10.sup.9 .OMEGA./.quadrature. and 1.times.10.sup.11 .OMEGA./.quadrature. both before and after film processing. Both of the electrically-conductive layers are transparent. In an alternative embodiment, the photographic element contains a transparent electrically-conductive layer containing a first electrically-conductive agent and a second electrically-conductive agent. The electrically-conductive layer has an electrical resistivity of less than 1.times.10.sup.9 .OMEGA./.quadrature.Type: GrantFiled: May 6, 1999Date of Patent: October 31, 2000Assignee: Eastman Kodak CompanyInventors: Charles C. Anderson, Mario D. DeLaura
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Patent number: 6130030Abstract: The present invention is a photographic element having a support, at least one silver halide emulsion layer superposed on the support, at least one electrically conductive layer superposed on the support and a protective overcoat superposed on the support. The electrically conductive layer is composed of an electrically conductive agent and a binder. The protective overcoat includes a polyurethane having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50,000 lb/in.sup.2 and an interpolymer comprising repeating units of A and B wherein A comprises a fluorine containing acrylate or a fluorine containing methacrylate monomer and B comprises an ethylenically unsaturated monomer containing hydratable groups.Type: GrantFiled: March 23, 1999Date of Patent: October 10, 2000Assignee: Eastman Kodak CompanyInventors: Charles C. Anderson, Brian A. Schell
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Patent number: 6124083Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support and an electrically-conductive layer superposed on the support. The electrically-conductive layer is composed of a sulfonated polyurethane film-forming binder and an electrically-conductive polymer.Type: GrantFiled: October 15, 1998Date of Patent: September 26, 2000Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Dennis J. Eichorst, Charles C. Anderson, Dennis J. Savage
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Patent number: 6114079Abstract: The present invention is an imaging element including a support having a frontside and a backside, an imaging layer superposed on the frontside of said support, and a print-retaining, electrically-conductive layer superposed on the backside of the support. The electrically-conductive layer includes a film-forming binder comprising the latex polymeric addition product of from 20 to 65 mol % of styrene, from 30 to 78 mol % of n-butyl methacrylate, and from 2 to 10 mol % of the sodium salt of 2-sulfoethyl methacrylate. and at least about 60 weight percent composite electrically conductive particles. The composite electrically-conductive particles have a layer of electrically-conductive metal-containing crystallites overlying a nonconductive substrate particle. The electrically-conductive layer is formed by dispersing the composite electrically-conductive particles using polymeric milling media having a mean particle size less than 350 .mu.Type: GrantFiled: April 1, 1998Date of Patent: September 5, 2000Assignee: Eastman Kodak CompanyInventors: Paul A. Christian, Debasis Majumdar, Ibrahim M. Shalhoub, Dennis J. Eichorst
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Patent number: 6107015Abstract: The present invention is a photographic element having a support, at least one silver halide emulsion layer superposed on a first side of the support and a protective overcoat superposed on a second said of the support. The protective overcoat includes a polyurethane having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50,000 lb/in.sup.2, an interpolymer composed of repeating units of A and B wherein A comprises a fluorine containing acrylate or a fluorine containing methacrylate monomer and B comprises an ethylenically unsaturated monomer containing hydratable groups and an electrically conductive agent.Type: GrantFiled: March 23, 1999Date of Patent: August 22, 2000Assignee: Eastman Kodak CompanyInventors: Charles C. Anderson, Brian A. Schell, Mario D. DeLaura
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Patent number: 6103459Abstract: Novel compounds that may be used as chemical vapor deposition precursors, thermochromic materials, conductive polymers, light-emitting diode precursors, and molecular charge-transfer salt precursors are provided. In addition, a novel compound that can be used to make the aforementioned compounds is provided. Still further, another aspect of the present invention is to provide methods for making and using the novel compounds provided.Type: GrantFiled: March 9, 1999Date of Patent: August 15, 2000Assignee: Midwest Research InstituteInventor: Bruce Diel
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Patent number: 6096491Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on the support, an electrically-conductive layer superposed on the support and a protective topcoat overlying the electrically-conductive layer. The electrically-conductive layer contains an electrically-conductive polymer and has a water electrode resistivity (WER) value that is substantially unchanged upon subjecting of the imaging element to color photographic processing. The protective topcoat is composed of a polyurethane film-forming binder having a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 psi.Type: GrantFiled: October 15, 1998Date of Patent: August 1, 2000Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Dennis J. Eichorst, Kenneth L. Tingler