Cellulose Or Derivative, E.g., Regenerated Cellulose, Etc. Patents (Class 430/641)
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Patent number: 11656120Abstract: This application provides a structure of the optical sensor, in which a photosensitive element is arranged on a substrate, a colloid layer is arranged on the upper part of the substrate and covers the photosensitive element, and a thin film is further arranged. The device includes an adhesive layer and a light-transmitting layer, the adhesive layer is disposed above one of the colloid layers, the light-transmitting layer is disposed above one of the adhesive layers, and the structure can be used to provide the film member that can be changed according to requirements The optical design reduces the production cost of the optical sensor; this application further provides a shielding layer between the film member and the colloid layer to improve the photosensitive efficiency of the optical sensor.Type: GrantFiled: August 18, 2021Date of Patent: May 23, 2023Assignee: Sensortek Technology Corp.Inventor: Feng-Jung Hsu
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Patent number: 7622247Abstract: 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, are physically hard, and have good optical clarity while maintaining the sensitometric properties of the materials.Type: GrantFiled: January 14, 2008Date of Patent: November 24, 2009Assignee: Carestream Health, Inc.Inventors: William Donald Ramsden, Chaofeng Zou, Doreen Catherine Lynch, Stacy Marie Ulrich, Sharon Mary Simpson
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Patent number: 7157217Abstract: A photothermographic material comprising, on a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a non-photosensitive outermost layer at a surface side of the support at which the image forming layer is provided, wherein: 1) the non-photosensitive organic silver salt contains 90% by mole or more of silver behenate; and a binder in the outermost layer contains 50% by weight or more of a hydrophobic polymer latex, 2) the outermost layer contains a polymer latex; and a layer adjacent to the outermost layer contains a binder which can lose fluidity upon a decrease in temperature, or 3) the outermost layer contains a polymer latex; and a coating solution for forming the outermost layer can lose fluidity upon a decrease in temperature.Type: GrantFiled: December 15, 2003Date of Patent: January 2, 2007Assignee: Fujifilm CorporationInventors: Hajime Nakagawa, Yoshihisa Tsukada, Keiichi Suzuki
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Patent number: 7138223Abstract: A photothermographic material including, on 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 and a binder, and, on the other side of the support, a non-photosensitive back side layer. The total quantity of an alkaline earth metal contained in the non-photosensitive back side layer is 1×10?5 mol/m2 to 1×10?3 mol/m2.Type: GrantFiled: April 8, 2003Date of Patent: November 21, 2006Assignee: Fuji Photo Film Co., Ltd.Inventor: Rikio Inoue
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Patent number: 7074551Abstract: The present invention relates to an imaging element comprising at least one imaging layer and a support wherein the support comprises at least one layer comprising a splayant and a layered material, wherein the layered material has an aspect ratio from 20:1 and 500:1 and wherein the layered material comprises less than 10% by weight of the layer. The present invention also relates to a method of making a dimensionally stable imaging element comprising providing a support wherein said support comprises at least one layer comprising a splayant and a layered material, wherein said layered material comprises an aspect ratio of from 20:1 to 500:1 and wherein said layered material comprises less than 10% by weight of said at least one layer; and applying at least one imaging layer.Type: GrantFiled: August 4, 2003Date of Patent: July 11, 2006Assignee: Eastman Kodak CompanyInventors: YuanQiao Rao, Robert J. Kress
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Patent number: 6914139Abstract: In a cellulose acylate solution, cellulose acylate is dissolved in an essentially non-chlorinated solvent. The essentially non-chlorinated solvent is a mixture of a ketone having a solubility parameter of 19 to 21 and an ester having a solubility parameter of 19 to 21. The solution further contains a releasing agent.Type: GrantFiled: November 9, 2001Date of Patent: July 5, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuo Mukunoki, Tsukasa Yamada
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Publication number: 20040161714Abstract: A photothermographic material contains a support having thereon an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a non-photosensitive outermost layer on a side of the support where the image forming layer is provided, The photosensitive silver halide contains silver iodide in an amount of from 40 to 100% by mole, and a binder contained in the outermost layer contains at least one of a latex polymer and a water soluble polymer that is not derived from an animal protein in an amount of 50% by mass or more.Type: ApplicationFiled: December 30, 2003Publication date: August 19, 2004Inventor: Keiichi Suzuki
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Publication number: 20040126717Abstract: A photothermographic material comprising, on a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a non-photosensitive outermost layer at a surface side of the support at which the image forming layer is provided, wherein:Type: ApplicationFiled: December 15, 2003Publication date: July 1, 2004Inventors: Hajime Nakagawa, Yoshihisa Tsukada, Keiichi Suzuki
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Patent number: 6746831Abstract: Thermographic and photothermographic materials comprise a barrier layer to provide physical protection and to prevent migration of diffusible imaging components and by-products resulting from high temperature imaging and/or development The barrier layer comprises 15 to 100 weight % of a film-forming cellulose ether polymer. This barrier layer is capable of retarding diffusion of mobile chemicals such as fatty carboxylic acids, developers, and toners. This barrier layer can also include other film-forming polymers to provide a clear and scratch-resistant surface.Type: GrantFiled: January 27, 2003Date of Patent: June 8, 2004Assignee: Eastman Kodak CompanyInventor: Bryan V. Hunt
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Publication number: 20040067454Abstract: Nonpolymeric fluorochemicals defined as by the following Structure I are useful in thermally developable materials.Type: ApplicationFiled: October 4, 2002Publication date: April 8, 2004Applicant: Eastman Kodak CompanyInventors: Kumars Sakizadeh, Gary E. LaBelle, Aparna V. Bhave
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Patent number: 6713241Abstract: Aqueous-based thermally sensitive emulsions and imaging materials include a mixture of binders in at least one imaging layer. These binder mixtures include from 70 to about 99 weight % of hydrophilic binders such as gelatin and gelatin derivatives, and the remainder of the total binder weight is composed of one or more hydrophobic binders or water-dispersible polymer latexes. These binder mixtures are particularly useful in imaging layers of thermographic and photothermographic materials and provide long term keeping and reduced crystallization of fatty acids.Type: GrantFiled: August 9, 2002Date of Patent: March 30, 2004Assignee: Eastman Kodak CompanyInventors: Kathleen M. Vaeth, Charles L. Bauer, Jon A. Hammerschmidt, David M. Teegarden
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Patent number: 6664038Abstract: A silver halide emulsion which comprises silver halide grains dispersed in a hydrophilic colloid mixture comprising from 5% to 25% by weight of dextran, from 20% to 40% by weight of hydrogenated poly-saccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin. A fore-hardened photographic material comprising such an emulsion and the use of such an emulsion in a photographic material increases the sensitometry and mechanical resistance of such a photographic material.Type: GrantFiled: September 27, 2002Date of Patent: December 16, 2003Assignee: Ferrania, S.p.A.Inventors: Luca Ceruti, Eva Genesio, Gianluigi Molinari, Ivo Zullo
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Publication number: 20030198901Abstract: Antistatic compositions include a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an amine wherein Rf comprises 4 or more fully fluorinated carbon atoms. These antistatic compositions can be formulated in organic solvent-based conductive coating compositions, with or without hydrophobic binders, that can be used to form conductive layers in thermally developable materials including thermographic and photothermographic materials.Type: ApplicationFiled: March 27, 2002Publication date: October 23, 2003Applicant: Eastman Kodak CompanyInventors: Kumars Sakizadeh, Gary E. LaBelle, Michael W. Orem, Aparna V. Bhave
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Publication number: 20030194668Abstract: A process for alkali saponification of polymer film is disclosed. The process comprises the steps of applying solution of an alkali onto a polymer film having a temperature of not lower than room temperature, and washing away the alkaline solution from the film.Type: ApplicationFiled: February 20, 2003Publication date: October 16, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Naoyuki Kawanishi, Kazuhiko Fujiwara, Hitoshi Namikawa, Takahiro Moto, Yutaka Tamura
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Patent number: 6573036Abstract: A single-side coated light-sensitive silver halide photographic film material has been disclosed, having on one side of a subbed support, one or more light-sensitive silver halide emulsion layer(s) overcoated with an outermost protective layer; and, at the other side of said support, a backing layer, covered with a protective outermost layer, characterized in that at least said backing layer is provided with a layer wherein, besides a cross-linked or cross-linkable first binder an organic component free from cross-linking upon reaction with a hardener is present as a second binder having a low molecular weight.Type: GrantFiled: April 10, 2001Date of Patent: June 3, 2003Assignee: Afga-GevaertInventors: Mark Van den Zegel, Francis Vanhoudt, Frank Ruttens, Guy Damen
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Patent number: 6395465Abstract: A process for precipitating a high bromide silver halide emulsion in an aqueous medium is disclosed comprising growing nucleated silver halide grains in a reaction vessel in the presence of a peptizer comprising a water dispersable starch to form high bromide radiation-sensitive silver halide grains, wherein the majority of grain growth in the reaction vessel is performed at a pH of less than 3.5. Growth of high bromide silver halide emulsion grains in the presence of a starch peptizer at low pH in accordance with the invention results in emulsion grains with lower fog, even in the absence of the use of strong oxidizing agents during grain precipitation.Type: GrantFiled: December 7, 2000Date of Patent: May 28, 2002Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, Victor P. Scaccia
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Patent number: 6391534Abstract: A process for precipitating a high bromide silver halide emulsion in an aqueous medium is described comprising precipitating high bromide radiation-sensitive silver halide grains in a reaction vessel in the presence of a peptizer comprising a water dispersable starch, wherein a strong oxidizing agent is added to the reaction vessel during or after the precipitation at a pH of less than 4.0 such that an oxidation potential of at least 650 mV (Ag/AgCl ref.) is achieved. A reduction in the rate of reaction between strong oxidants such as bromine and starch at such low pH has been found to enable an advantageous decrease in the amount of oxidant required to achieve and maintain a high oxidation potential during emulsion grain precipitation. Starch, unlike gelatin, also advantageously has adequate stability at the combination of high acidity and high emulsion precipitation temperatures.Type: GrantFiled: December 7, 2000Date of Patent: May 21, 2002Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, Victor P. Scaccia
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Patent number: 6383730Abstract: A process for precipitating a high chloride silver halide emulsion in an aqueous medium is disclosed comprising growing nucleated silver halide grains in a reaction vessel in the presence of a peptizer comprising a water dispersable starch to form high chloride radiation-sensitive silver halide grains, wherein the majority of grain growth in the reaction vessel is performed at a pH of less than 3.5. Growth of high chloride silver halide emulsion grains in the presence of a starch peptizer at low pH in accordance with the invention results in emulsion grains with lower fog, even in the absence of the use of strong oxidizing agents and antifoggants during grain precipitation.Type: GrantFiled: December 7, 2000Date of Patent: May 7, 2002Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, Victor P. Scaccia
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Patent number: 6365336Abstract: There is disclosed an aqueous photothermographic composition comprising a) a photosensitive silver halide emulsion precipitated in a water dispersible cationic starch peptizing agent and b) an oxidation-reduction imaging forming composition comprising (I) a colloidal dispersion of silver compound particles and (ii) an organic reducing agent. The use of a starch peptizing agent reduces the fog in an element using the composition upon thermal processing.Type: GrantFiled: October 31, 2000Date of Patent: April 2, 2002Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, David A. Dickinson, Mark Lelental
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Patent number: 6261752Abstract: One object of the present invention is to provide a mixture composed of 1) a cellulose ether derivative esterified at least with a biprotic acid group derivative expressed by the formula HOOC—B—COOH (I), wherein B is a linear aliphatic group represented by (CH2)x with x a positive integer from 1 to 5 or is a 5-member or 6-member cycloaliphatic group and 2) a cellulose or cellulose derivative esterified at least with a phthalic acid derivative represented by the following formula (II). wherein R1 is an all group and y is a positive integer from 0 to 3. Said mixture shows an enhanced stability against hydrolysis when subjected to conditioning at high relative humidity and temperature. The composition may be useful in order to get antihalation layer on photographic films as well as enteric coating of pharmaceutical dosage and for controlled-release applications such as for cleaning formulation.Type: GrantFiled: January 13, 2000Date of Patent: July 17, 2001Assignee: Ferrania S.p.A.Inventors: Paola Puppo, Alberto Valsecchi, Carlo Barlocco, Luisa Tavella
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Patent number: 6225036Abstract: A multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said emulsion layers comprises tabular grains having {111} major faces containing greater than 50 mole percent bromide, and accounting for greater than 50 percent total grain projected area precipitated in a peptizer that is a water dispersible cationic starch, and contains a fragmentable electron donating sensitizer.Type: GrantFiled: March 23, 2000Date of Patent: May 1, 2001Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, Kenneth J. Reed, Victor P. Scaccia, James A. Friday
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Patent number: 6187525Abstract: A photographic recording element is disclosed containing in at least one dye image forming layer unit (a) a radiation-sensitive silver halide grains include tabular grains (1) having {111} major faces, (2) containing greater than 50 mole percent bromide, based on silver, and (3) accounting for greater than 50 percent total grain projected area, (b) a fragmentable electron donating sensitizer, (c) a water dispersible cationic starch peptizer, and (d) a one equivalent dye image providing coupler. Increased photographic speed is realized.Type: GrantFiled: December 17, 1998Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, Kenneth J. Reed, Victor P. Scaccia, James A. Friday
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Patent number: 6004740Abstract: A method is disclosed for washing silver halide photographic emulsions, including desalting and/or concentrating, based on depletion phase separation mechanism, wherein phase separation is effected by the addition of water-soluble non-interactive and non-adsorbing carboxyl polymers. The process involves the separation of the supernatant fluid, containing the undesirable water soluble salts and the added phase separating agents, from the washed and condensed silver halide phase for desalting and redispersion of the latter.Type: GrantFiled: August 28, 1997Date of Patent: December 21, 1999Assignee: Eastman Kodak CompanyInventors: Julia S. Tan, Ramesh Jagannathan
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Patent number: 5994049Abstract: A method is disclosed for washing silver halide photographic emulsions, including desalting and/or concentrating, based on depletion phase separation mechanism, wherein phase separation is effected by the addition of water-soluble non-interactive and non-adsorbing non-ionic polymers or non-ionic surfactant micelles. The process involves the separation of the supernatant fluid, containing the undesirable water-soluble salts and the added phase separating agents, from the washed and condensed silver halide phase and redispersion of the latter.Type: GrantFiled: August 28, 1997Date of Patent: November 30, 1999Assignee: Eastman Kodak CompanyInventors: Julia S. Tan, Ramesh Jagannathan
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Silver halide light-sensitive material comprising support, hardening layer and light-sensitive layer
Patent number: 5882838Abstract: A silver halide light-sensitive material comprises a support, a hardening layer and a light-sensitive layer. The hardening layer contains an ethylenically unsaturated polymerizable compound or an ethylenically unsaturated cross-linkable polymer. The light-sensitive layer contains silver halide and a hydrophilic polymer. The hardening layer or the light-sensitive layer contains a reducing agent. An adhesive layer or the light-sensitive layer contains a water-soluble synthetic polymer. The adhesive layer is provided between the hardening layer and the light-sensitive layer. The water-soluble synthetic polymer comprises a repeating unit represented by the formula (I) in an amount of at least 50 mol %: ##STR1## in which each of n1 and n2 is an integer of 10 to 5,000; each of R.sup.1 and R.sup.2 is hydrogen, an alkyl group or an aryl group; X is --O--R.sup.4 --O-- or --NR.sup.5 --; R.sup.4 is an alkylene group, an alkyleneoxyalkylene group, an arylene group or an aralkylene group; R.sup.Type: GrantFiled: October 3, 1997Date of Patent: March 16, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Hoshi, Hiroyuki Nagase -
Patent number: 5858632Abstract: A method for processing a silver halide light sensitive photographic material comprising a support having thereon hydrophilic colloid layers including a silver halide emulsion layer, wherein a dextran and a leuco dye compound each are independently contained in the hydrophilic colloid layer(s), the photographic material being processed with a developer containing a reductone as a developing agent.Type: GrantFiled: October 17, 1997Date of Patent: January 12, 1999Assignee: Konica CorporationInventor: Masaaki Taguchi
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Silver halide light-sensitive material comprising support, hardening layer and light-sensitive layer
Patent number: 5843619Abstract: A silver halide light-sensitive material comprises a support, a hardening layer and a light-sensitive layer. The hardening layer contains an ethylenically unsaturated polymerizable compound and a hydrophobic polymer having an acidic group. The light-sensitive layer contains silver halide and a hydrophilic polymer. The hardening layer or the light-sensitive layer contains a reducing agent. An adhesive layer or a light-sensitive layer contains a water-soluble synthetic polymer. The adhesive layer is provided between the hardening layer and the light-sensitive layer. The water-soluble synthetic polymer comprises a repeating unit represented by the formula (I) in an amount of at least 10 mol %: ##STR1## in which each of R.sup.1 and R.sup.2 independently is hydrogen, an aliphatic group or an aromatic group.Type: GrantFiled: September 19, 1997Date of Patent: December 1, 1998Assignee: Fuji Photo Film Co., Ltd.Inventor: Satoshi Hoshi -
Patent number: 5776643Abstract: A light-sensitive material for a color filter is described, which comprises a support having provided thereon a peeling layer and further provided thereon at least three silver halide emulsion layers which are different in color sensitivity. A process for producing a color filter is also described, which comprises the steps of adhering an emulsion side of the light-sensitive material to a light-transmitting substrate, peeling the support off the light-sensitive material, pattern-exposing the emulsion side, and subjecting the material to development processing and desilvering processing.Type: GrantFiled: May 6, 1997Date of Patent: July 7, 1998Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroyuki Hirai
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Patent number: 5733718Abstract: A radiation-sensitive silver halide emulsion for use in photographic is disclosed containing an oxidized cationic starch as a peptizer. The oxidized cationic starch facilitates emulsion precipitation and chemical sensitization.Type: GrantFiled: July 29, 1996Date of Patent: March 31, 1998Assignee: Eastman Kodak CompanyInventor: Joe Edward Maskasky
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Patent number: 5726008Abstract: A photographic element is disclosed comprised of a layer containing radiation-sensitive silver halide grains and a vehicle which can be chill set and is in part derived from gelatin and in part derived from water dispersible starch.Type: GrantFiled: September 18, 1996Date of Patent: March 10, 1998Assignee: Eastman Kodak CompanyInventor: Joe Edward Maskasky
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Patent number: 5707791Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a polyester support having on one side thereof a silver halide emulsion layer, and on the other side of the support, a layer containing a polyester resin or polyurethane resin and further thereon a magnetic recording layer.Type: GrantFiled: January 16, 1996Date of Patent: January 13, 1998Assignee: Konica CorporationInventors: Mineko Ito, Koichi Saito, Chieko Uehara
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Patent number: 5667955Abstract: An improved spectrally sensitized ultrathin tabular grain emulsion is disclosed in which tabular grains (a) having {111} major faces, (b) containing greater than 50 mole percent bromide, based on silver, (c) accounting for greater than 70 percent of total grain projected area, (d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m, and (e) exhibiting an average thickness of less than 0.07 .mu.m, show an enhanced capability for chemical sensitization by reason of employing an oxidized cationic starch as a peptizer.Type: GrantFiled: June 12, 1996Date of Patent: September 16, 1997Assignee: Eastman Kodak CompanyInventor: Joe Edward Maskasky
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Patent number: 5629142Abstract: A dual coated radiographic element is disclosed including at least one radiation-sensitive emulsion comprised of silver halide grains containing greater than 50 mole percent bromide and less than 4 mole percent iodide, based on silver, with greater than 50 percent of total grain projected area being accounted for by tabular grains having {111} major faces, a spectral sensitizing dye adsorbed to the surfaces of the silver halide grains, and hydrophilic colloid vehicle acting as a peptizer and a binder for the silver halide grains. At least the portion of the vehicle acting as a peptizer is a hydrophilic colloid derived from a water dispersible cationic starch.Type: GrantFiled: December 19, 1995Date of Patent: May 13, 1997Assignee: Eastman Kodak CompanyInventor: Joe E. Maskasky
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Patent number: 5627019Abstract: A method is provided of preparing a light-sensitive silver halide emulsion or a dispersion of a photographically useful compound comprising the steps of precipitating silver halide or photographically useful compound in the presence of colloidal silica serving as a protective colloid, coagulation washing the precipitate formed and redispersing the silver halide or the photographically useful compound, characterised in that the coagulation takes place in the presence of hydroxy ethyl cellulose as, e.g., hydroxy ethyl cellulose, hydroxy propyl cellulose, methyl cellulose etc., as a polymer capable of forming hydrogen bridges with the silica, in an amount sufficient to form coagulable aggregates with the silica particles.Type: GrantFiled: August 31, 1995Date of Patent: May 6, 1997Assignee: AGFA-Gevaert, N.V.Inventors: Hubert Vandenabeele, Eric Bertels
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Patent number: 5620840Abstract: A high bromide tabular grain photographic emulsion is disclosed containing as a peptizer a water dispersible cationic starch.Type: GrantFiled: May 2, 1996Date of Patent: April 15, 1997Assignee: Eastman Kodak CompanyInventor: Joe E. Maskasky
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Patent number: 5607828Abstract: A radiation-sensitive emulsion comprised of silver halide grains including tabular grains (a) having {100} major faces, (b) containing greater than 50 mole percent chloride, based on silver, (c) accounting for greater than 30 percent of total grain projected area, (d) exhibiting an average thickness of less than 0.3 .mu.m, and (e) exhibiting an average aspect ratio of greater than 5, and a dispersing medium including a peptizer adsorbed to the silver halide grains, wherein the peptizer is a water dispersible oxidized cationic starch.Type: GrantFiled: June 14, 1996Date of Patent: March 4, 1997Assignee: Eastman Kodak CompanyInventor: Joe E. Maskasky
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Patent number: 5604085Abstract: An improved spectrally sensitized ultrathin tabular grain emulsion is disclosed in which tabular grains (a) having {111} major faces, (b) containing greater than 50 mole percent bromide, based on silver, (c) accounting for greater than 70 percent of total grain projected area, (d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m, and (e) exhibiting an average thickness of less than 0.07 .mu.m, show an enhanced capability for chemical sensitization by reason of employing a cationic starch as a peptizer.Type: GrantFiled: December 19, 1995Date of Patent: February 18, 1997Assignee: Eastman Kodak CompanyInventor: Joe E. Maskasky
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Patent number: 5457023Abstract: A water-soluble or water-dispersible, non-ionic surface active compound is provided having the formula ##STR1## wherein each Y independently is a hydrophilic polyhydroxyalkyl group;each X independently is ##STR2## each R independently is a hydrophobic substituted or unsubstituted alkyl group or a hydrophobic substituted or unsubstituted aryl group;each n independently is an integer from 2 to 6; and,each m is an integer from 2 to 4.Such surfactants can be used in hydrophilic colloid compositions in the manufacture of photographic materials.Type: GrantFiled: December 20, 1993Date of Patent: October 10, 1995Assignee: Eastman Kodak CompanyInventors: Catherine B. Briggs, Ian M. Newington, Alan R. Pitt
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Patent number: 5284744Abstract: Silver halide emulsions can be prepared by precipitating the silver halide grains in the presence of a peptizer comprising a water-soluble starch, said peptizer exhibiting an absorbance of less than 1.0 in the wavelength region 200 to 400 nm when measured at a concentration of 2 g/L through a 1 cm transmission path. A useful water-soluble starch having this property is potato starch. Silver halide elements sensitive in the short ultraviolet spectral region can be prepared with these emulsions.Type: GrantFiled: August 27, 1992Date of Patent: February 8, 1994Assignee: Eastman Kodak CompanyInventor: Joe E. Maskasky
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Patent number: 5250409Abstract: A silver halide photographic material which comprises a support having thereon one or more constituent layers including at least one silver halide emulsion layer, wherein at least one of said constituent layers is a layer formed by (a) coating a composition which contains a high molecular weight compound having at least one repeating unit represented by the following formula (I), and then (b) making the composition undergo a crosslinking reaction: ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, a chlorine atom, or a cyano group; R.sub.2 and R.sub.3, which may be the same or different, each represents an alkyl group; L.sub.1 and L.sub.2 each represents a divalent linking group; Y represents --O--, or ##STR2## wherein R.sub.4 represents a hydrogen atom, or an alkyl group; X represents a crosslinking group containing an activated vinyl component; and Z represents a counter ion for balancing the electric charge.Type: GrantFiled: August 27, 1992Date of Patent: October 5, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Shoichiro Yasunami, Yasuo Mukunoki
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Patent number: 5212051Abstract: A photographic element comprising a support having thereon at least one layer comprising a polymer obtained by copolymerizing a repeating unit represented by the following general formula (I) and a copolymerizable cellulose derivative represented by the following general formula (II):--A).sub.x (B).sub.y (I)wherein A represents a repeating unit derived from an ethylenically unsaturated monomer having --COOH group, --SO.sub.3 H group or --PO(OH).sub.2 group in the molecular structure; and B represents a repeating unit derived from a copolymerizable ethylenically unsaturated monomer; ##STR1## wherein (R.sup.1)s each independently represents (i) a hydrogen atom, (ii) a monovalent organic bonding group such as an ester group or an ether group or (iii) a monovalent organic bonding group represented by the following general formula (III), with the proviso that (R.sup.1)s do not all hydrogen atom at the same time; and n represents a number of 20 to 800; ##STR2## wherein R.sup.Type: GrantFiled: June 24, 1991Date of Patent: May 18, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Kentaro Shiratsuchi, Hideki Takaki
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Patent number: 5204211Abstract: An image receiving element for use in a peel-apart type silver salt diffusion transfer process comprising:(a) a support having a front side and a back side;(b) at least one layer which is a cellulose ester layer or a regenerated cellulose layer coated on the front side of the support;(c) an aliphatic acid ester of glycerol contained in at least one of the cellulose ester layer or the regenerated cellulose layer; and(d) a gelatin-containing layer coated on the back side of the support.Type: GrantFiled: August 14, 1991Date of Patent: April 20, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Ikutaro Horie, Hidetoshi Kobayashi
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Patent number: 5019494Abstract: A silver halide photographic material which comprises a support having thereon at least one hydrophilic colloid layer, wherein the hydrophilic colloid layer comprises (a) a binder comprising a dextran having a molecular weight of at least 100,000 and (b) an ionic polymer.Type: GrantFiled: February 27, 1989Date of Patent: May 28, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Ichizo Toya, Ryoichi Nemori
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Patent number: 4999282Abstract: An improved silver halide photographic material having at least one layer of a light-sensitive silver halide emulsion that is spectrally sensitized with a sensitizing dye of the following general formula (1) to light having a wavelength of 750 nm and above. Said silver halide emulsion is prepared by a process which comprises generating silver halide grains by adding a solution of a water-soluble silver salt and a solution of a water-soluble halide to a solution containing a protective colloid, aggregating the generated silver halide grains with a polymeric flocculating together with the protective colloid, and removing the dissolved matter; ##STR1## where Z.sub.1 and Z.sub.3 each represents the non-metallic atomic group necessary to form an optionally substituted benzothiazole, benzoxazole, naphthothiazole or naphthoxazole nucleus; R.sub.1 and R.sub.2 each represents a saturated or unsaturated aliphatic group; Z.sub.2 represents a 5- or 6-membered ring of carbon atoms; A represents a hydrogen atom when Z.sub.Type: GrantFiled: May 17, 1989Date of Patent: March 12, 1991Assignee: Konica CorporationInventors: Kiyoshi Sato, Kouji Ono
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Patent number: 4916049Abstract: A silver halide photographic material is disclosed, comprising a support having at least two hydrophilic colloid layers on one side of a support, at least one of said hydrophilic colloid layers containing dextran having an average molecular weight of at least 100,000, wherein at least one hydrophilic colloid layer containing substantially no dextran and having a dry thickness of at least 1.0 .mu.m exists between the hydrophilic colloid layer containing the dextran disposing nearest to the support and the support.Type: GrantFiled: December 12, 1988Date of Patent: April 10, 1990Assignee: Fuji Photo Film Co., Ltd.Inventor: Ichizo Toya
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Patent number: 4816290Abstract: A process of forming a solid granular film is disclosed, which comprises dispersing solid granules into a liquid with the aid of a dispersant, removing the dispersant from the resulting dispersion to suspend the solid granules at the vapor-liquid interface, and transferring the solid granules onto a support, whereby high covering power is attained with respect to solid granules.Type: GrantFiled: April 9, 1987Date of Patent: March 28, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuo Heki, Noriyuki Inoue
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Patent number: 4663267Abstract: An information recording disc comprising a generally circular substrate having a polished major surface, a light-reflective coating formed on the polished major surface of the substrate, and a light-absorptive coating formed on the surface of the light-reflective coating and formed with information tracks each consisting of a succession of spaced pits in the light-absorptive coating, the light-absorptive coating being composed of a mixture of cellulose nitrate and a dye sensitizer exhibiting a noticeable light absorptivity in response to light with a predetermined wavelength, the cellulose nitrate being prepared from a starting cellulose containing at least about 97% of alpha-cellulose. If desired, the light-reflective coating may be dispensed with so that the light-absorptive information recording coating is formed directly on the polished surface of the substrate.Type: GrantFiled: November 4, 1985Date of Patent: May 5, 1987Assignee: Pioneer Electronic CorporationInventors: Fumio Matsui, Manabu Sugano
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Patent number: 4582776Abstract: An information recording disc comprising a generally circular substrate having a polished major surface, a light-reflective coating formed on the polished major surface of the substrate, and a light-absorptive coating formed on the surface of the light-reflective coating and formed with information tracks each consisting of a succession of spaced pits in the light-absorptive coating, the light-absorptive coating being composed of a mixture of cellulose nitrate and a dye sensitizer exhibiting a noticeable light absorptivity in response to light with a predetermined wavelength, the cellulose nitrate being prepared from a starting cellulose containing at least about 97% of alpha-cellulose. If desired, the light-reflective coating may be dispensed with so that the light-absorptive information recording coating is formed directly on the polished surface of the substrate.Type: GrantFiled: September 28, 1982Date of Patent: April 15, 1986Assignee: Pioneer Electronic CorporationInventors: Fumio Matsui, Manabu Sugano
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Patent number: 4569898Abstract: A photosensitive element comprising a support carrying a layer of photosensitive silver halide grains and a barrier polymer, said barrier polymer having a limited swell ratio in alkali; said barrier polymer being disposed substantially intermediate said silver halide grains and overlying said silver halide grains. In a preferred embodiment, the silver halide layer is a planar, spaced array of silver halide grains.Type: GrantFiled: November 23, 1984Date of Patent: February 11, 1986Assignee: Polaroid CorporationInventor: F. Richard Cottrell
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Patent number: 4260674Abstract: A photographic material for the production of an image in a dry process by forming a vesicle image upon the decomposition of a peroxide compound at image nuclei of silver by providing a layer containing a silver salt which forms upon exposure to light, in imagewise distribution, image nuclei. The silver salt has a grain size of less than 0.3 .mu.m and is present in the layer in an amount of from 1-500 mg/m.sup.2.Type: GrantFiled: December 14, 1979Date of Patent: April 7, 1981Assignee: Agfa-Gevaert AktiengesellschaftInventors: Edith Weyde, Anita von Konig, Werner Liebe