Gelatin Or Derivative Containing Patents (Class 430/642)
-
Patent number: 11578229Abstract: The present invention relates to a gelatin or pectin based antimicrobial surface coating material. In the present invention, boron compounds are mixed with gelatin or pectin and a surface coating material in the form of a film is obtained. The said coating material can be used in all packaging industry requiring hygiene particularly in food industry. The invention enables packages to be antifungal, anticandidal and antibacterial.Type: GrantFiled: July 14, 2017Date of Patent: February 14, 2023Assignee: YEDITEPE UNIVERSITESIInventors: Fikrettin Sahin, Zeynep Iyigundogdu, Okan Demir, Merve Gulerim, Sanem Argin
-
Patent number: 10865973Abstract: The invention provides a lighting module (100) for use in a luminaire (200). The lighting module (100) comprises: a base (101) having a longitudinal axis (LA) and being constructed for rotatably connecting the base (101) to a socket (119) of a luminaire (200). The lighting module (100) further comprises a carrier (102) connected to the base (101) and extending from the base (101) in the direction of the longitudinal axis (LA). The lighting 5 module (100) further comprises a light unit (103) comprising a light source (104) and a heat sink (105) for dissipating thermal energy of the light source (104). The heat sink (105) extends in the direction of the longitudinal axis (LA) and is positioned at a non-zero distance D1 to the longitudinal axis (LA). The lighting module (100) further comprising a connecting construction (106) connecting the light unit (103) rotatably to the carrier (102) for rotating 10 the light unit (103) both around the carrier (102) and longitudinal axis (LA).Type: GrantFiled: November 13, 2017Date of Patent: December 15, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Vincent Stefan David Gielen, Johannes Gerrit Jan Beijer, Simon Jacobus Maria Kuppens, Anna Wilhelmina Maria Wondergem-De Best, Peter Johannes Martinus Bukkems, Simon Eme Kadijk
-
Patent number: 10174893Abstract: A LED streetlamp is provided. The LED streetlamp includes an integral housing having a light-emitting opening that emits light from a bottom surface and an accommodation space; a power supply unit coupled to the accommodation space through the light-emitting opening of the housing; a reflecting part coupled to the accommodation space through the light-emitting opening of the housing to separate power supply unit from the accommodation space of the lower part and reflecting light from a bottom surface thereof; a substrate for supplying power to multiple LEDs coupled to an inner side surface of the housing of a lower side of the reflecting part; and a cover part. A case with a single structure is provided and includes the power supply unit, the substrate having the LEDs and the reflecting plate to be assembled in the case through the light emitting opening to reduce a manufacturing cost.Type: GrantFiled: February 26, 2016Date of Patent: January 8, 2019Assignee: Gigatera Inc.Inventor: Duk-Yong Kim
-
Patent number: 9918362Abstract: A LED based lighting apparatus is disclosed. The light engine used in the lighting apparatus may use printed circuit board and have a plurality of LED groups that are independently controllable by a control unit. The power supply input and return paths connected to each LED group may be implemented on different layers to allow a compact footprint that may be used with traditional fluorescent encasements with relatively little modification. The LEDs may comprise a subset of LEDs having a first color and a subset of LEDs having a second color different from said first color intertwined on the light engine.Type: GrantFiled: February 6, 2017Date of Patent: March 13, 2018Assignee: ARKALUMEN INC.Inventor: Gerald Edward Briggs
-
Patent number: 8043800Abstract: A photosensitive material for forming a conductive film including a silver salt-containing emulsion layer, and a conductive layer containing conductive fibers, wherein the amount of the conductive fibers in the conductive layer is 0.005 g/m2 to 0.2 g/m2.Type: GrantFiled: September 17, 2010Date of Patent: October 25, 2011Assignee: FUJIFILM CorporationInventor: Kenji Naoi
-
Patent number: 7829270Abstract: A photosensitive material includes a support and an emulsion layer containing a silver salt emulsion, the photosensitive material is capable of forming a conductive metal film by exposing and developing the emulsion layer, wherein the emulsion layer has a swelling rate of 150% or more.Type: GrantFiled: May 26, 2006Date of Patent: November 9, 2010Assignee: FUJIFILM CorporationInventor: Shinichi Nakahira
-
Publication number: 20090017277Abstract: A photosensitive material includes a support and an emulsion layer containing a silver salt emulsion, the photosensitive material is capable of forming a conductive metal film by exposing and developing the emulsion layer, wherein the emulsion layer has a swelling rate of 150% or more.Type: ApplicationFiled: May 26, 2006Publication date: January 15, 2009Applicant: FUJIFILM CORPORATIONInventor: Shinichi Nakahira
-
Patent number: 7442495Abstract: The invention provides a photothermographic material containing an image forming layer having at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one side of a support, an outermost layer on the same side of the support as the image forming layer, and a non-photosensitive intermediate layer between the outermost layer and the image forming layer, wherein 50% by weight or more of a binder of the non-photosensitive intermediate layer is formed by a hydrophobic polymer latex, the outermost layer has a mean thickness of from 0.1 ?m to 0.45 ?m, and the non-photosensitive intermediate layer has a variation coefficient of a thickness distribution of 50% or less based on a mean thickness of the non-photosensitive intermediate layer. A photothermographic material, which exhibits reduced image unevenness and excellent image storage stability, is provided.Type: GrantFiled: January 20, 2006Date of Patent: October 28, 2008Assignee: FUJIFILM CorporationInventor: Keiichi Suzuki
-
Patent number: 7419774Abstract: Disclosed is a photothermographic material comprising a support having disposed on a surface thereof, a non-photosensitive silver source, a photosensitive silver halide, and a reducing agent, and having disposed another surface thereof at least one non-photosensitive layer, wherein at least one of the non-photosensitive layers contains at least one type of gelatin having an isoelectric point of from 5.0 to 9.5; and a method for processing the photothermographic material.Type: GrantFiled: December 23, 2002Date of Patent: September 2, 2008Assignee: FUJILFILM CorporationInventor: Rikio Inoue
-
Patent number: 7419775Abstract: A method of manufacturing a micro-particle dispersion having a hydrophobic protective colloid comprising the steps of: (a) dispensing micro-particles in a hydrophilic dispersant to form a hydrophilic micro-particle dispersion having the hydrophilic dispersant as a protective colloid, and (b) adding a dispersant to the hydrophilic micro-particle dispersion, the dispersant having a functional group capable of ion bonding with a hydrophilic group of the hydrophilic dispersant.Type: GrantFiled: November 8, 2005Date of Patent: September 2, 2008Assignee: Konica Minolta Medical & Graphic, Inc.Inventors: Hiroto Ito, Kazuhito Ihara
-
Patent number: 7416838Abstract: The present invention provides a photothermographic material having, on one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and at least one non-photosensitive layer which is disposed on the same side of the support as the image forming layer and farther from the support than the image forming layer, wherein the non-photosensitive layer includes at least a copolymer latex of an acrylate or methacrylate having a fluorine atom and a monomer component having a hydrophobic group, and the surface of the side having the image forming layer includes convex portions having a height of 1.5 ?m or higher in an amount of from 20 to 2000 per 1 mm2. A photothermographic material which exhibits excellent film physical properties and high image quality is provided.Type: GrantFiled: February 21, 2007Date of Patent: August 26, 2008Assignee: FUJIFILM CorporationInventor: Itsuo Fujiwara
-
Patent number: 7358038Abstract: The present invention provides a black and white photothermographic material having, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, as well as an image forming method. The black and white photothermographic material is characterized in that 50% or more of a total projected area of the photosensitive silver halide is occupied by tabular grains having a (111) face as a major face; the tabular grains have at least 2 parallel twin crystal planes in a grain; and a variation coefficient of a distribution of distances between closest twin crystal planes is 20% or less. Also provided is an image forming method that includes image exposure using fluorescent intensifying screens and thermal development.Type: GrantFiled: January 30, 2006Date of Patent: April 15, 2008Assignee: FUJIFILM CorporationInventors: Kazutaka Takahashi, Takeshi Funakubo, Kiyoteru Miyake
-
Patent number: 7347706Abstract: An LED lamp module for use with a threaded electrical socket connector is provided, which includes an LED light engine with a first electrical connector, a second electrical connector having a first end electrically engagable with the first electrical connector and a second end having a threaded outer surface compatible with a threaded electrical socket connector. The LED lamp module further comprises a sleeve surrounding the first electrical connector and the first end such that the sleeve allows for relative rotation between the first electrical connector and the first end in a loosened state, and restricts relative rotation between the first electrical connector and the first end in a tightened state. A method for installing a retrofit LED lamp module in a housing which physically restricts full rotation of an LED light engine is also provided.Type: GrantFiled: July 12, 2006Date of Patent: March 25, 2008Assignee: Leotek Electronics CorporationInventors: Chen-Ho Wu, Chin-Wang Tu, Shih Chang Wang
-
Patent number: 7338756Abstract: A process for making a direct dispersion of a photographically useful material comprising: mixing (i) an aqueous phase and (ii) a liquid organic phase under conditions of shear or turbulence to form a dispersion of the organic phase dispersed in the aqueous phase; wherein the liquid organic phase comprises one or more photographically useful materials and one or more organic solvents having a boiling point of at least 150° C., a molecular weight less than or equal to 300, and a solvatochromic parameter ? value greater than or equal to 0.50, wherein the weight ratio of the sum of the solvents having a boiling point of at least 150° C., a molecular weight less than or equal to 300, and a solvatochromic parameter ? value greater than or equal to 0.50 to the photographically useful materials does not exceed 0.25.Type: GrantFiled: October 24, 2003Date of Patent: March 4, 2008Assignee: Eastman Kodak CompanyInventors: Paul L. Zengerle, Richard K. Rothrock, Jerrold N. Poslusny, Stephen P. Singer, Peter P. Garrisi, Paul B. Merkel
-
Patent number: 7332267Abstract: Disclosed is a photothermographic material comprising an image forming layer containing at least a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and a binder and a non-image forming layer on at least one surface of a support, wherein 50% by weight or more of the binder is a hydrophilic binder, the light-sensitive material further comprising a metal phthalocyanine compound represented by the following formula (PC-1): wherein M represents a metal atom, R1, R4, R5, R8, R9, R12, R13 and R16 respectively represent a hydrogen atom or a substituent where at least one of R1, R4, R5, R8, R9, R12, R13 and R16 is an electron attractive group and R2, R3, R6, R7, R10, R11, R14 and R15 respectively represent a hydrogen atom or a substituent.Type: GrantFiled: July 21, 2006Date of Patent: February 19, 2008Assignee: FUJIFILM CorporationInventors: Hajime Nakagawa, Seiichi Yamamoto, Masahiko Taniguchi
-
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
-
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
-
Patent number: 6949332Abstract: A silver halide emulsion containing water, dispersion medium comprising modified gelatin whose amino group is chemically modified, and silver halide grains comprising spectrally sensitized silver halide grains each having a multilayer adsorption of dye chromophores on the surface thereof. A method of preparing the silver halide emulsion. A silver halide photosensitive material contains the silver halide emulsion in a light-sensitive silver halide emulsion layer thereof.Type: GrantFiled: March 10, 2004Date of Patent: September 27, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Kawakami, Mikio Ihama, Takeshi Suzumoto
-
Patent number: 6911071Abstract: The present invention relates to an imaging member comprising poultry gelatin. In one embodiment, the poultry gelatin is located preferably in at least one layer in the upper half of said imaging member comprising poultry gelatin. Another embodiment provides an aqueous coating composition comprising poultry gelatin.Type: GrantFiled: April 30, 2004Date of Patent: June 28, 2005Assignee: Eastman Kodak CompanyInventors: James S. Honan, Andrew M. Howe, Paul A. Corbelli, Lloyd A. Lobo, Ryan B. Adams, John S. Brand
-
Patent number: 6878513Abstract: A modified gelatin obtained by reacting (A) a gelatin and (B) a compound which contains a nitrogenous aromatic ring having a mercapto group to form covalent bond with a reactive group in the gelatin, an introduction amount of the compound in the gelatin being 1.0×10?6 mol to 2.0×10?3 mol per 100 g of the gelatin.Type: GrantFiled: December 27, 2001Date of Patent: April 12, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Terukazu Yanagi, Mamoru Sakurazawa, Naohiro Takeda, Yoichi Maruyama, Katsuyuki Takada
-
Patent number: 6875565Abstract: A silver halide emulsion which comprises silver halide tabular grains showing an average thickness lower than 0.15 ?m, an average diameter of at least 1.20 ?m and an average aspect ratio of at least 8:1 dispersed in a hydrophilic colloid mixture comprising from 10% to 30% by weight of dextran, from 20% to 40% by weight of a hydrogenated polysaccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin and photographic element comprising it.Type: GrantFiled: October 30, 2003Date of Patent: April 5, 2005Assignee: Ferrania, S.p.A.Inventors: Luca Ceruti, Simona Fava
-
Patent number: 6824941Abstract: The present invention relates to an imaging member comprising poultry gelatin. In one embodiment, the poultry gelatin is located preferably in at least one layer in the upper half of said imaging member comprising poultry gelatin. Another embodiment provides an aqueous coating composition comprising poultry gelatin.Type: GrantFiled: May 8, 2002Date of Patent: November 30, 2004Assignee: Eastman Kodak CompanyInventors: James S. Honan, Andrew M. Howe, Paul A. Corbelli, Lloyd A. Lobo, Ryan B. Adams, John S. Brand
-
Patent number: 6770412Abstract: The invention provides black and white silver halide material for optical contact copying, comprising: at least one photographic emulsion layer including a silver-halide-containing matrix in which the matrix includes a polymer and a hydrophilic binder, wherein the ratio of the weight of silver in the emulsion layer to the weight of polymer in the emulsion layer per unit area is less than 2.0. The photographic material is suitable for use in optical contact copying providing reduced contact gain compared to that provided by conventional photographic material.Type: GrantFiled: June 24, 2002Date of Patent: August 3, 2004Assignee: Eastman Kodak CompanyInventors: Colin J. Gray, Christopher B. Rider
-
Publication number: 20040146814Abstract: A silver halide industrial radiographic material comprising on at least one side of a support a hydrophilic gelatinous non-spectrally sensitized radiation-sensitive emulsion layer, having grains, coated in a total amount in the range from 6 to 20 g, expressed as an equivalent amount of silver nitrate per square meter, and at least one non-radiation sensitive protective gelatinous antistress overcoat layer thereupon, wherein a ratio of gelatin to silver, expressed as silver nitrate in the said layer arrangement is at least 0.70, wherein said gelatinous layers are hardened by a gelatin cross-linking agent in an amount in order to have a dissolving time of at least 40 minutes, said time being defined as the period of time from the moment when the silver halide photographic material, dipped into 50 ml of an aqueous solution of 1.5% by weight of sodium hydroxide at 50 °C.Type: ApplicationFiled: January 15, 2004Publication date: July 29, 2004Inventors: Marc Van de Zegel, Marleen De Vester
-
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
-
Patent number: 6706467Abstract: An aqueous coating fluid is described comprising gelatin at a concentration of at least 1 wt % and a colloidal particle dispersed material phase at a volume fraction of at least 0.01, wherein at least 20% of the gelatin comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide. The present invention enables increasing the concentrations of a coating fluid containing gelatin and dispersed sub-micron colloidal materials, reducing the size of the sub-micron colloidal materials in such a coating fluid, and/or including higher molecular weight gelatin in such a coating fluid without detrimentally increasing the viscosity of such fluids. The invention further enables reducing the viscosity of an aqueous coating fluid containing gelatin and dispersed insoluble colloidal material, without needing to reduce the concentration of gelatin or colloidal materials, increase the size of the sub-micron colloidal materials, and/or reduce the molecular weight of the gelatin.Type: GrantFiled: May 30, 2002Date of Patent: March 16, 2004Assignee: Eastman Kodak CompanyInventors: Andrew M. Howe, Richard W. Connelly, James S. Honan, Lloyd A. Lobo
-
Patent number: 6699653Abstract: Disclosed is a photothermographic material containing a silver salt of an organic acid, a silver halide and a reducing agent on a transparent support, which has, in silver iodide content distribution of total silver halide grains contained in the photothermographic material plotted with silver iodide content in abscissa and silver content in silver halide grains in ordinate, at least one maximum value in a silver iodide content range of less than 10 mol % and at least one maximum value in a silver iodide content range of 10 mol % or more. The photothermographic material shows low fog, little increase of fog and little sensitivity fluctuation during storage before light exposure.Type: GrantFiled: August 2, 2002Date of Patent: March 2, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Takahiro Goto
-
Publication number: 20040033449Abstract: 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: ApplicationFiled: April 8, 2003Publication date: February 19, 2004Inventor: Rikio Inoue
-
Publication number: 20040029054Abstract: 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: ApplicationFiled: August 9, 2002Publication date: February 12, 2004Applicant: Eastman Kodak CompanyInventors: Kathleen M. Vaeth, Charles L. Bauer, Jon A. Hammerschmidt, David M. Teegarden
-
Patent number: 6689556Abstract: Disclosed is a method of producing a water-soluble chain-extended gelatin subjecting a source a source gelatin having a first isoelectric point, in aqueous solution, to a partial crosslinking reaction to form a reaction mixture comprising a partially crosslinked gelatin having a second isoelectric point, filtering the reaction mixture, adjusting a pH value of the filtered reaction mixture to a value equivalent to the second isoelectric point ±1.5, and concentrating, drying and pulverizing the pH-adjusted reaction mixture.Type: GrantFiled: February 23, 2001Date of Patent: February 10, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Kawamoto, Hiroki Sasaki, Minoru Uchida
-
Patent number: 6686118Abstract: A blue-sensitive, radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer.Type: GrantFiled: March 26, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Richard F. Davis, Robert E. Dickerson, Susan K. Mroczek
-
Patent number: 6686119Abstract: A blue-sensitive, radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of from 8 to 14.5, a grain thickness of from about 0.15 to about 0.3 &mgr;m, and comprise at least 90 mol % bromide and up to 6 mol % iodide, based on total silver halide. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer.Type: GrantFiled: May 29, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Mark P. Pavlik, Joseph P. Pepe, Susan K. Mroczek
-
Patent number: 6686115Abstract: A blue-sensitive, radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;M, and comprise at least 90 mol % bromide and from about 0.5 to about 2.75 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. In addition, the tabular grain emulsion includes a mercapto-substituted benzothiazole, benzoxazole, or benzimidazole to provide desired image tone and processability.Type: GrantFiled: March 26, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Richard F. Davis, Susan K. Mroczek
-
Patent number: 6686117Abstract: A radiographic silver halide film has reduced yellow dye stain by including a blend of tabular silver halide grains in the emulsion layers. The blend of grains includes blue-sensitive tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The blend also includes green-sensitive tabular silver halide grains that have an aspect ratio of at least 20, a grain thickness of at least 0.07 &mgr;m, and comprise at least 90 mol % bromide, up to 1.5 mol % chloride, and up to 1.5 mol % iodide, based on total silver halide. The molar ratio of silver in the blue-sensitive silver halide grains to the silver in the green-sensitive silver halide grains is from about 2:1 to about 6:1.Type: GrantFiled: March 26, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Richard F. Davis
-
Patent number: 6686116Abstract: A blue-sensitive radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. The tabular silver halide grains are spectrally sensitized using a combination of spectral sensitizing dyes to provide increased speed and reduced dye stain.Type: GrantFiled: March 26, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Anthony Adin, Stephen A. Hershey, Richard F. Davis
-
Patent number: 6682868Abstract: An imaging assembly includes a blue-sensitive, radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin. The film is used in combination with one or more intensifying screens that absorb X-radiation and emit radiation having a wavelength of from about 300 to about 500 nm. In many embodiments, the intensifying screens include a “blue-light” emitting alkaline earth fluorohalide phosphor dispersed in a binder on a support.Type: GrantFiled: March 26, 2003Date of Patent: January 27, 2004Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Richard F. Davis, David J. Steklenski
-
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
-
Publication number: 20030224301Abstract: An aqueous coating fluid is described comprising gelatin at a concentration of at least 1 wt % and a colloidal particle dispersed material phase at a volume fraction of at least 0.01, wherein at least 20% of the gelatin comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide. The present invention enables increasing the concentrations of a coating fluid containing gelatin and dispersed sub-micron colloidal materials, reducing the size of the sub-micron colloidal materials in such a coating fluid, and/or including higher molecular weight gelatin in such a coating fluid without detrimentally increasing the viscosity of such fluids. The invention further enables reducing the viscosity of an aqueous coating fluid containing gelatin and dispersed insoluble colloidal material, without needing to reduce the concentration of gelatin or colloidal materials, increase the size of the sub-micron colloidal materials, and/or reduce the molecular weight of the gelatin.Type: ApplicationFiled: May 30, 2002Publication date: December 4, 2003Applicant: Eastman Kodak CompanyInventors: Andrew M. Howe, Richard W. Connely, James S. Honan, Lloyd A. Lobo
-
Publication number: 20030224269Abstract: The present invention relates to an imaging member comprising poultry gelatin. In one embodiment, the poultry gelatin is located preferably in at least one layer in the upper half of said imaging member comprising poultry gelatin. Another embodiment provides an aqueous coating composition comprising poultry gelatin.Type: ApplicationFiled: May 8, 2002Publication date: December 4, 2003Inventors: James S. Honan, Andrew M. Howe, Paul A. Corbelli, Lloyd A. Lobo, Ryan B. Adams, John S. Brand
-
Patent number: 6627667Abstract: The invention is directed to a process for modifying a water soluble polymer, said process comprising modifying a polymer containing amine groups, by reacting at least one of said amine groups with activated ester, said ester being the reaction product of a carboxyl activator and the carboxyl group of a molecule R—COOH, said R-group being a functional group, to produce a reaction mixture containing a polymer, said polymer containing at least one amide group; subjecting said reaction mixture to at least ion exchange chromatography to purify said reaction mixture, said purification comprising at least partly removing the said reaction product, and/or carboxyl activator.Type: GrantFiled: July 3, 2001Date of Patent: September 30, 2003Assignee: Fuji Photo Film B.V.Inventors: Sebastianus Gerardus J. M. Kluijtmans, Jan Bastiaan Bouwstra, Yuzo Toda
-
Publication number: 20030165784Abstract: Disclosed is a photothermographic material containing a silver salt of an organic acid, a silver halide and a reducing agent on a transparent support, which has, in silver iodide content distribution of total silver halide grains contained in the photothermographic material plotted with silver iodide content in abscissa and silver content in silver halide grains in ordinate, at least one maximum value in a silver iodide content range of less than 10 mol % and at least one maximum value in a silver iodide content range of 10 mol % or more. The photothermographic material shows low fog, little increase of fog and little sensitivity fluctuation during storage before light exposure.Type: ApplicationFiled: August 2, 2002Publication date: September 4, 2003Inventor: Takahiro Goto
-
Publication number: 20030162139Abstract: A silver halide emulsion is disclosed, comprising silver halide grains, wherein at least 50% of total grain projected area is accounted for by tabular grains having an aspect ratio of 10 to 100 and at least 50% by number of total grains is accounted for by tabular grains having at least 30 dislocation lines per grain in the fringe portion of the grain, and the emulsion contains a compound having a function of permitting injection of at least two electrons into silver halide via photoexcitation by a single photon.Type: ApplicationFiled: October 8, 2002Publication date: August 28, 2003Inventors: Katsuhiko Suzuki, Yoshiko Iwai
-
Patent number: 6589326Abstract: An aqueous coating fluid is described comprising gelatin at a concentration of at least 1 wt % and gelatin hardener at a level from 1-200 effective &mgr;mole hardener per gram of coating fluid, wherein at least 20% of the gelatin comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide. Relative improvements are obtained in reducing the rate of chemical gelation of a coating fluid containing gelatin and a hardener, without the need for chemically modifying functional groups of the gelatin. The invention further enables an increase in coating fluid concentration, increase in the fluid viscosity, reduction in the ratio of added anionic polymer to gelatin, and/or increase in the pH of a coating fluid containing gelatin and a hardener, without detrimentally increasing the rate of chemical gelation of the coating fluid.Type: GrantFiled: May 30, 2002Date of Patent: July 8, 2003Assignee: Eastman Kodak CompanyInventors: Andrew M. Howe, Lloyd A. Lobo, Gary L. Santee
-
Patent number: 6576412Abstract: A hydrophilic colloid composition having hydrophobic material dispersed therein and comprising an anionic surface active agent further comprises a cationic surface active agent in an amount sufficient to reduce the viscosity of the composition, the cationic surface active agent comprising a hydrophobic moiety, a non-ionic hydrophilic moiety and a cationic hydrophilic moiety.Type: GrantFiled: June 14, 2001Date of Patent: June 10, 2003Assignee: Eastman Kodak CompanyInventors: Alan R. Pitt, David D. Miller, Andrew Howe
-
Patent number: 6573037Abstract: An imaging element is described comprising one or more hydrophilic colloid layers which include gelatin as a film forming binder which has been chemically crosslinked with a gelatin hardener, wherein at least 20% of the gelatin of at least one of the one or more hydrophilic colloid layers comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide, and the gelatin is chemical crosslinked with a gelatin hardener at a level from 70 to 120 effective &mgr;mole hardener per gram of gelatin. Improvements are obtained in the wet mechanical strength of an imaging element comprising gelatin as a binder, without needing to increase the amount of chemical crosslinker with respect to the gelatin. The invention further enables the use of relatively low molecular weight gelatins without compromising the wet mechanical strength of imaging elements and without needing to increase the amount of crosslinker relative to the amount of gelatin.Type: GrantFiled: May 30, 2002Date of Patent: June 3, 2003Assignee: Eastman Kodak CompanyInventors: Lloyd A. Lobo, Hwei-Ling Yau, James S. Honan, Paul T. Hahm
-
Publication number: 20030099911Abstract: 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: ApplicationFiled: September 27, 2002Publication date: May 29, 2003Applicant: Ferrania, S.p.A.Inventors: Luca Ceruti, Eva Genesio, Gianluigi Molinari, Ivo Zullo
-
Publication number: 20030077550Abstract: A silver halide photographic emulsion comprising silver halide grains is disclosed, which is obtained through a process including at least one step of forming grains using a dispersion medium having a low viscosity, wherein 50% or more of the entire projected area of all silver halide grains in the emulsion is occupied by silver halide tabular grains having an aspect ratio of 4 or more and a twin plane spacing of 0.012 &mgr;m or less. Further disclosed is a silver halide color photographic light-sensitive material using the emulsion.Type: ApplicationFiled: July 2, 2002Publication date: April 24, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Makoto Kikuchi, Naohiro Takeda, Yoichi Maruyama, Yuzo Toda, Masaaki Miki
-
Publication number: 20030036026Abstract: The invention provides black and white silver halide material for optical contact copying, comprising: at least one photographic emulsion layer including a silver-halide-containing matrix in which the matrix includes a polymer and a hydrophilic binder, wherein the ratio of the weight of silver in the emulsion layer to the weight of polymer in the emulsion layer per unit area is less than 2.0. The photographic material is suitable for use in optical contact copying providing reduced contact gain compared to that provided by conventional photographic material.Type: ApplicationFiled: June 24, 2002Publication date: February 20, 2003Applicant: Eastman Kodak CompanyInventors: Colin J. Gray, Christopher B. Rider
-
Patent number: 6514681Abstract: A radiation-sensitive emulsion comprised of an aqueous dispersing medium and a coprecipitated grain population including tabular grains containing greater than 50 mole percent bromide, based on silver, having {111} major faces, and accounting for greater than 90 percent of total grain projected area, wherein said dispersing medium is comprised of (a) a gelatin which has been modified to convert at least one carboxylic acid group thereof to a group that does not exhibit pH-dependent ionization within the pH range from 4.0 to 7.0, and (b) a polyalkylene oxide block copolymer surfactant.Type: GrantFiled: May 24, 2001Date of Patent: February 4, 2003Assignee: Eastman Kodak CompanyInventors: Seshadri Jagannathan, Julia S. Tan, Roger L. Klaus, Philip J. Zola
-
Publication number: 20020197572Abstract: A radiation-sensitive emulsion comprised of an aqueous dispersing medium and a coprecipitated grain population including tabular grains containing greater than 50 mole percent bromide, based on silver, having {111} major faces, and accounting for greater than 90 percent of total grain projected area, wherein said dispersing medium is comprised of (a) a gelatin which has been modified to convert at least one carboxylic acid group thereof to a group that does not exhibit pH-dependent ionization within the pH range from 4.0 to 7.0, and (b) a polyalkylene oxide block copolymer surfactant.Type: ApplicationFiled: May 24, 2001Publication date: December 26, 2002Applicant: Eastman Kodak CompanyInventors: Seshadri Jagannathan, Julia S. Tan, Roger L. Klaus, Philip J. Zola