Fixing Or Stabilizing Image Patents (Class 430/337)
  • Patent number: 7316875
    Abstract: An image forming medium including at least a polymer and a photochromic compound such as spiropyran embedded in the polymer, wherein spiropyran molecules of the spiropyran compound are chelated by a cation.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: January 8, 2008
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 7314704
    Abstract: Imaging layers, image recording media, and methods of preparation of each, are disclosed.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: January 1, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Patent number: 7270943
    Abstract: Imaging layers, image recording media, and methods of preparation of each, are disclosed. One exemplary embodiment of the imaging layer, among others, includes a matrix; a radiation absorbing compound dissolved in the matrix; an aromatic compound dissolved in the matrix; a color former; and an activator. One of the activator and the color former is dissolved in the matrix and the other of the activator and the color former is substantially insoluble in the matrix at ambient conditions and is substantially uniformly distributed in the matrix.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: September 18, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Tetsuo Muryama, Makoto Ochi, Kanzi Shimizu, Cari L. Dorsh, Vladek Kasperchik, William E. Dorogy
  • Patent number: 7223519
    Abstract: Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to a work piece to mark it and removed from the work piece by peeling.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: May 29, 2007
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: Robert K. Barr, Corey O'Connor
  • Patent number: 7144676
    Abstract: Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to a work piece to mark it and removed from the work piece by peeling.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: December 5, 2006
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: Robert K. Barr, Corey O'Connor
  • Patent number: 6696229
    Abstract: Photographic process, in which a substrate comprising a plurality of superimposed layers of photochromic materials sensitive to different light wavelengths is provided. The object to be photographed is scanned and a digital file defining the image of the object is generated from the scanning. A plurality of sources of laser light having different wavelengths, each of which is the wavelength to which one of the photochromic materials is sensitive is provided and the layers of photochromic materials are irradiated by means of the laser beams produced by the sources, according to a program determined by the digital file, whereby to develop in each pixel of the substrate the color that it has in the image. The colors thus generated in the pixels of the substrate layers; and the background areas of the substrate layers are set.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: February 24, 2004
    Assignee: Kromotek, Ltd.
    Inventors: Shlomo Dukler, Jacob Hassan, Yaron Meerfeld
  • Patent number: 6649311
    Abstract: A process is provided for producing a polymeric layer having a desired image thereon or a three dimensional article comprising a number of such layers in which a layer of a liquid photocurable composition which comprises photo colorable particles is cured by light and selected areas thereof are irradiated with light of a different dose, thereby forming the desired image which composition comprises particles dispersed in it which are micro-capsules containing a photosensitive color changing composition within a barrier layer which is substantially impermeable to the components of the color changing composition or are solid particles comprising an immobilized photosensitive color changing composition. The process permits the use of the same initiating mechanism to cure the resin and to change the color of the particles.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: November 18, 2003
    Assignee: Vantico Limited
    Inventors: Dianne Beth Shirley, Ian Malcolm Shirley, Ajay Haridas Popat, Martin Russell Edwards, Kevin Thomas McAloon, Herbert Benson Scher
  • Publication number: 20030175612
    Abstract: A process for forming photosensitive microcapsules having discrete capsule walls comprising the steps of forming an emulsion of an oily core material in a continuous aqueous phase containing a carboxyvinyl polymer and enwrapping particles of the oily core material in an amine-formaldehyde condensation product produced by in situ condensation of an amine and formaldehyde wherein the carboxyvinyl polymer comprises a crosslinked polymer of acrylic acid is disclosed.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 18, 2003
    Inventors: Ibrahim Katampe, Alexander Y. Polykarpov, Joseph C. Camillus
  • Patent number: 6432610
    Abstract: Dye precursor molecules—normally rhodamine base—held in a transparent matrix are reactive with acids, bases, ions or radicals—and in the case of rhodamine are reactive with acids—to produce dye molecules—i.e., rhodamine—having markedly different spectroscopic properties. Light-sensitive molecules-normally a compound of ortho-nitro-aldehyde, in particular o-nitro-benzaldehyde or, preferably, 1-nitro-2-naphthaldehyde—in the same matrix undergo photochemical reaction when selectively exposed to light so as to form at least one of the acids, bases, ions or radicals with which the dye precursor molecules are reactive—preferably nitroso acid.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: August 13, 2002
    Assignee: Regents of the University of California
    Inventors: Peter M. Rentzepis, Alexander Dvornikov
  • Patent number: 6387584
    Abstract: A photoimaging material which comprises a support and a photoimaging layer formed on the support. The photoimaging layer comprises microcapsules and a reducing agent present outside the microcapsules. The microcapsules contain a leuco dye capable of oxidative color formation, a photooxidizing agent and an organosulfur antioxidant. The reducing agent is 2,2′-methylenebis(4-methyl-6-t-butylphenol) or 2,2′-methylenebis(4-ethyl-6-t-butylphenol). The photoimaging material is capable of thermal image fixing based on a method of forming color by radical oxidation of various leuco dyes to the corresponding dyes with a photooxidizing agent. The photoimaging material is not prone to background coloring (fogging) during storage under dark or light conditions after image fixing, and does not foul the inside of the apparatus during thermal image fixing.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: May 14, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kensuke Ikeda, Makoto Ono
  • Patent number: 6329120
    Abstract: An image recording medium is disclosed which comprising: an acid generating agent capable of generating an acid by the action of heat or an acid, which is represented by the following formula (1); and a compound of causing variation in the absorption region of from 360 to 900 nm by the intramolecular or intermolecular reaction triggered by the action of an acid: W1OP  (1) wherein W1 represents a residue of an acid represented by W1OH, and P represents an acid-sensitive substituent capable of splitting off at a temperature of 150° C. or less due to catalysis by W1OH.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: December 11, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiro Ohkawa
  • Patent number: 6329121
    Abstract: An image recording medium is disclosed which comprising: an acid generating agent capable of generating an acid by the action of heat or an acid, which is represented by the following formula (1); and a compound of causing variation in the absorption region of from 360 to 900 nm by the intramolecular or intermolecular reaction triggered by the action of an acid: W1OP  (1) wherein W1 represents a residue of an acid represented by W1OH, and P represents an acid-sensitive substituent capable of splitting off at a temperature of 150° C. or less due to catalysis by W1OH.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: December 11, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Junichi Yamanouchi, Atsuhiro Ohkawa
  • Patent number: 6107010
    Abstract: A method for printing on an exposed polymerised thermoplastic or curable layer of the body of a portable data medium, and a portable data medium particularly a chip card, comprising a polymerised layer, are disclosed. The method comprises the steps of mixing a polymerisable thermoplastic or curable binder and at least one light-sensitive compound responsive to laser radiation having a predetermined wavelength in such a way that it changes from a first state to a second coloured state, in order to form a mixture, exposing the mixture to the laser radiation having a predetermined wavelength; and polymerising the mixture to form the polymerised layer of the body of the data medium. The method is particularly suitable for printing on smart cards.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: August 22, 2000
    Assignee: Gemplus S.C.A.
    Inventors: Isabelle Corniglion, Armand Gellis, Robert Guguelmetti, Christian Leriche, Paul Morgavi, Andre Samat
  • Patent number: 5994021
    Abstract: A thermographic material is disclosed which comprises a support and provided thereon, a recording layer containing a photolytic free radical generating agent capable of providing a free radical on absorption of light, a dye decolored by the free radical, and an anti-decolorizing agent, the photolytic free radical generating agent and dye being contained in a microcapsule in the recording layer, and the anti-decolorizing agent being present outside the microcapsule in the recording layer, wherein an image is formed by imagewise heating the thermographic material to mix the anti-decolorizing agent with the photolytic free radical generating agent and the dye to form a latent image, and then exposing the heated material to light which the photolytic free radical generating agent absorbs, so that the dye at the latent image portions is not decolored and the dye at portions other than the latent image portions is decolored.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 30, 1999
    Assignee: Konica Corporation
    Inventors: Eisaku Katoh, Shuji Kida, Osamu Hatano, Kenzo Nakazawa
  • Patent number: 5741630
    Abstract: A process for producing and fixing an image uses an imaging medium comprising an acid-generating layer or phase comprising a mixture of a superacid precursor, a sensitizer and a secondary acid generator, and a color-change layer comprising an image dye. The sensitizer can absorb radiation of a sensitizer wavelength which does not, in the absence of the sensitizer, cause decomposition of the superacid precursor to form the corresponding superacid. The secondary acid generator is capable of acid-catalyzed thermal decomposition by the first acid to form a second acid, and the image dye undergoes a color change upon contact with the second acid. The medium is imagewise exposed to radiation of the sensitizer wavelength, thereby causing the sensitizer, in exposed areas, to decompose superacid precursor with formation of the fist acid. The medium is then heated to cause, in the exposed areas, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the second acid.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 21, 1998
    Assignee: Polaroid Corporation
    Inventors: John L. Marshall, Rita S. Shon Baker, Larry C. Takiff, Stephen J. Telfer, John C. Warner
  • Patent number: 5700850
    Abstract: A light-stable colored composition which includes a colorant and a radiation transorber. The colorant, in the presence of the radiation transorber, is adapted, upon exposure of the transorber to specific, narrow bandwidth radiation, to be mutable. The radiation transorber also imparts light-stability to the colorant so that the colorant does not fade when exposed to sunlight or artificial light.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 23, 1997
    Assignee: Kimberly-Clark Worldwide
    Inventors: Ronald Sinclair Nohr, John Gavin MacDonald
  • Patent number: 5670292
    Abstract: A dry type image formation process which comprises imagewise exposing a heat-developable photosensitive material to light, and then heat-developing the heat-developable photosensitive material, wherein the heat-developable photosensitive material further comprises a component isolated by microcapsules and the heat-developable photosensitive material is pressed before or after heat development so that the microcapsules are ruptured to release the internal phase and cause the component to be diffused into the photosensitive layer, allowing its function to be fulfilled, and an image formation process which comprises heat-developing a heat-developable photosensitive material after or simultaneously with imagewise exposing, the heat-developable photosensitive material comprising a photosensitive silver halide, a reducing agent, a basic precursor, a dye-providing substance which undergoes heat development to release or produce a dye, and a silver halide fixing agent which is a compound capable of fixing and stabili
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: September 23, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiko Matsumoto, Masaki Noro, Hisashi Okamura, Shun-ichi Ishikawa
  • Patent number: 5595853
    Abstract: An optical image forming material in which the background portions thereof are not color developed (not fogged) during storage in the dark after fixing, comprising a support having thereon at least a coating layer containing (1) microcapsules containing a leuco dye which is form color when it is oxidized and a photooxidizing agent, and (2) a reducing agent and a fixing accelerator present outside of the microcapsules. The reducing agent is a hydroquinone derivative substituted by an alkyl group at each of 2- and 5-positions thereof, and the fixing accelerator is 2,2-bis(4-hydroxy-phenyl)propane.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: January 21, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Ono, Naoto Yanagihara
  • Patent number: 5582956
    Abstract: A process for producing and fixing an image uses an imaging medium comprising an acid-generating layer or phase comprising a mixture of a superacid precursor, a sensitizer and a secondary acid generator, and a color-change layer comprising an image dye. The sensitizer can absorb radiation of a sensitizer wavelength which does not, in the absence of the sensitizer, cause decomposition of the superacid precursor to form the corresponding superacid. The secondary acid generator is capable of acid-catalyzed thermal decomposition by the first acid to form a secondary acid, and the image dye undergoes a color change upon contact with the secondary acid. The medium is imagewise exposed to radiation of the sensitizer wavelength, thereby causing the sensitizer, in exposed areas, to decompose superacid precursor with formation of the fist acid. The medium is then heated to cause, in the exposed areas, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: December 10, 1996
    Assignee: Polaroid Corporation
    Inventors: Anne Ehret, John L. Marshall, Rita S. S. Baker, Larry C. Takiff, Stephen J. Telfer, John C. Warner
  • Patent number: 5565306
    Abstract: The present invention provides a thermofixable photosensitive recording material comprising a substrate and a recording layer formed thereon in which a pyrazolone derivative represented by the formula (1 ) shown in the specification and functions as a color former, and a hydroquinone derivative and an acidic substance which function as a color forming auxiliary agent or fixing auxiliary agent are dissolved mutually therein.Further, a binder can be added as required to the recording layer, thereby four components are dissolved mutually therein.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: October 15, 1996
    Assignee: New OJI Paper Co., Ltd.
    Inventors: Tatsuya Meguro, Nobuhisa Danou, Tetsuo Tsuchida, Naoto Arai
  • Patent number: 5508421
    Abstract: A pyrrolotriazole azomethine dye represented by formula (I), (II) or (IV) is disclosed: ##STR1## Also, a heat transfer dye providing material is disclosed, in which the material includes a support having thereon a dye providing layer containing a heat migrating dye, with the dye providing layer containing at least one pyrrolotriazole azomethine dye represented by any of the above formulae (I), (II) and (IV).
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: April 16, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Suzuki, Hisashi Mikoshiba, Seiiti Kubodera, Osamu Takahashi, Yasuhiro Shimada, Koushin Matsuoka, Shigeru Yamazaki, Katsuyoshi Yamakawa, Kozo Sato
  • Patent number: 5476755
    Abstract: An image forming element and an image forming method using the same are disclosed. The element comprises a support having thereon a image forming layer comprising a binder, an aromatic aldehyde, a cobalt (III) complex represented by formula I, and a compound represented by formula II or formula III;Co.sup.3 +(L)p(X)q (I)wherein L is a coordination compound capable of forming a complex compound with the cobalt cation and at least one of which is NH.sub.3 or a primary amine; X is a counter anion; p is an integer of 1 to 6; when p is 2 to 6, the plural Ls may be the same or different; and q is an integer of 1 to 3, ##STR1## wherein lig is a coordination compound capable of forming with the cobalt cation; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently an alkyl group, an aryl group, an aralkyl group, an alkenyl group, an alkinyl group, a cycloalkyl group, a heterocyclic group or a cyano group; n.sub.1 is an integer of 1 to 6, when n.sub.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: December 19, 1995
    Assignee: Konica Corporation
    Inventors: Noritaka Nakayama, Norio Miura, Yoriko Nakayama, Tawara Komamura, Toshihisa Takeyama
  • Patent number: 5362882
    Abstract: A novel pyrrolotriazole derivative is disclosed, represented by any one of formulae (I), (II), (III), (IV), or (V): ##STR1## A heat transfer dye providing material is also disclosed, comprising a support having thereon a dye providing layer containing a heat migrating dye, said dye providing layer containing at least one pyrrolotriazole azomethine dye represented by any one of formulae (I), (II), (III), or (IV).
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: November 8, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Suzuki, Yasuhiro Shimada, Koushin Matsuoka, Shigeru Yamazaki, Katsuyoshi Yamakawa, Kozo Sato
  • Patent number: 5304452
    Abstract: A recording material comprising a support coated with a photosensitive layer comprising a photosensitive diazo compound enclosed in microcapsules and a coupling component. The microcapsules are produced by forming an organic solution containing the diazo compound and a wall monomer, and emulsifying the organic solution in an aqueous solution containing an anionic surface-active agent and polyvinylpyrrolidone to produce oil droplets containing the wall monomer. The wall monomer is polymerized to form a wall around the oil droplets. When heat is applied to the photosensitive layer under alkaline conditions, the coupling component reacts with the diazo compound to form a color.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: April 19, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Ohno, Akihiro Shimomura, Toshiharu Tanaka
  • Patent number: 5053320
    Abstract: The invention relates to a photosensitive composition for direct dry negative color printing composition. The photosensitive composition comprises a binder containing a plurality of grains of a semiconductor material, each grain having adsorbed on its surface one of three different complexes of spiropyran with a metal salt, each complex being sensitive to a different wavelength of light, a cross-linkable polymer and free radical initiator. The composition and process enables photofinishing or printing from a negative.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: October 1, 1991
    Assignee: Richard L. Scully
    Inventor: Jean J. A. Robillard
  • Patent number: 5001044
    Abstract: A silver halide photographic material which comprises a support having provided thereon at least one silver halide emulsion layer and at least one layer comprising a polymer containing a group which can be dissociated to form a cation in a fixer, wherein a layer containing substantially no silver halide grains is provided between the layer comprising the polymer and the silver halide emulsion layer. The photographic material exhibits a high fixing speed and is substantially free from surface defects such as streaking and acne.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: March 19, 1991
    Assignee: Fuji Photo Film Co.
    Inventor: Ichizo Toya
  • Patent number: 4985331
    Abstract: Multi-color recording materials where the color forming layers are established on the same side of the support are disclosed.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: January 15, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiso Saeki, Fumiaki Shinozaki, Yutaka Fujita
  • Patent number: 4962009
    Abstract: An image-forming material comprising: (a) microcapsules, in which at least one leuco dye capable of developing a color by oxidation and at least one photooxidizing agent (preferably a combination of a lophine dimer and an organic halogeno-compound) are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules (preferably present in the form of an emulsified dispersion), thereby achieving image formation in a completely dried condition, and ensuring excellent freshness keeping property, image reproducibility and fixability.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: October 9, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shintaro Washizu, Jun Yamaguchi, Fumiaki Shinozaki, Akihiro Shimomura, Toshimasa Usami, Toshiaki Endo, Keiso Saeki
  • Patent number: 4962013
    Abstract: A photochromic material to be used for a photosensitive arrangement such as photosensitive laminated glass. The photochromic material is formed of a high polymer substrate material containing photochromic spirooxazine compound as expressed by the following general formula: ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are at least one selected from the group consisting of alkyl group, alkenyl group, cycloalkyl group and aryl group; R.sup.4 is one selected from the group consisting of hydrogen atom and alkyl group having the number of carbon atoms ranging from 1 to 5; rings X and Y are at least one selected from the group consisting of hydrocarbon aromatic ring and heterocyclic aromatic ring; and Z is one selected from the group consisting of oxygen atom and sulfur atom. Additionally, a triplet state quencher such as nitroxy free radical is contained in the high polymer substrate material, thereby suppressing generation of deterioration substance due to irreversible reaction of spirooxazine molecules.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: October 9, 1990
    Assignees: Nissan Motor Co., Ltd. Yokohama, Mitsubishi Kasei Corporation
    Inventors: Yasuo Tateoka, Masashi Ito, Shuichi Maeda, Kazuo Mitsuhashi, Tetsuo Murayama
  • Patent number: 4960678
    Abstract: A compound represented by the following general formula [I] ##STR1## wherein ##STR2## represents a norbornylidene group or an adamantylidene group each of which may have a substituent, andX represents an oxygen atom, the group >N--R.sub.2, the group >N--A.sub.1 --B.sub.1 --A.sub.2).sub.m (B.sub.2).sub.n R.sub.3, the group >N--A.sub.3 --A.sub.4, or the group >N--A.sub.3 --A.sub.4, provided that when ##STR3## is an adamantylidene group, X is selected from the above groups excepting the oxygen atom and the group >N--R.sub.2 ; and plastic lens containing the compound of the above formula [I].
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: October 2, 1990
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Takashi Tanaka, Satoshi Imura, Yasuji Kida
  • Patent number: 4956254
    Abstract: A image forming material is described, comprising a support having thereon a microcapsule-containing layer, said layer including at least one of organic boron compound anion salt of an organic cationic dye represented by formula (I) as described herein, and at least one compound capable of cleaving at least one carbon-boron bond, both components being isolated from each other by the walls of the microcapsules.Also described is an image forming method which comprises imagewise exposing the aforesaid image forming material to form an image and then contacting the components isolated by the walls of the microcapsules with each other.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: September 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shintaro Washizu, Jun Yamaguichi
  • Patent number: 4952244
    Abstract: The invention relates to a light stabilizing and antioxidant coating for polyacetylenic recording media which comprises an aqueous composition of ascorbic acid, gelatin and less than 2% by weight of surfactant wherein the mole ratio of acid to gelatin is between about 1:1 and about 10:1 dissolved in from about 35 wt. % to about 80 wt. % of water.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: August 28, 1990
    Assignee: GAF Chemicals Corporation
    Inventors: David F. Lewis, Robert D. Schenfele, Thomas Winkler
  • Patent number: 4939074
    Abstract: A method for processing a silver halide color photographic light-sensitive material which comprises color developing a silver halide color photographic light-sensitive material, the coating amount of elemental silver thereon being not more than 0.8 g/m.sup.2, bleach-fixing the developed material and then water washing and/or stabilizing the bleach-fixed material, the method being characterized in that the concentration of bleaching agents in a bleach-fixing solution is not more than 0.1 mole/l or that of fixing agents in the solution is not more than 0.50 mole/l.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: July 3, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takatoshi Ishikawa
  • Patent number: 4828970
    Abstract: There is disclosed a method for processing a light-sensitive silver halide color photographic material in which a light-sensitive silver halide color photographic material having at least one silver halide emulsion layer is exposed imagewise to light and then subjected to processing including at least a color development treatment or a color development treatment followed by a bleach-fixing treatment, the improvement wherein said at least one silver halide emulsion layer is a silver halide emulsion layer in which not less than 80 mole % of the total silver halide in the layer is silver chloride and the pH value of the bleach-fixing solution used in said bleach-fixing treatment is in the range of 4.5 to 6.8.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: May 9, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Kuse, Shigeharu Koboshi
  • Patent number: 4778743
    Abstract: Disclosed is a method for processing a light-sensitive silver halide color photographic material, which comprises including at least the step of color developing, the step of processing with a liquor having fixing ability and the step of processing with a washing solution substitute as the final processing step, after imagewise exposure of a light-sensitive silver halide color photographic material containing at least one silver halide emulsion layer on a support, characterized in that at least one layer of the silver halide emulsion layer contains at least one coupler selected from the magenta couplers and the cyan couplers; washing solution substitute contains at least one compound selected from the group consisting of from 2.0.times.10.sup.-5 to 2.5.times.10.sup.-2 mol per liter of the washing solution substitute of the aldehydes, from 2.0.times.10.sup.-5 to 8.0.times.10.sup.-2 mol per liter of the washing solution substitute of the aldehyde derivatives and from 2.0.times.10.sup.-5 to 8.0.times.10.sup.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: October 18, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Ishikawa, Shigeharu Koboshi, Masayuki Kurematsu
  • Patent number: 4753867
    Abstract: An optical recording medium including a substrate and a photosensitive layer thereon, the photosensitive layer containing as its major ingredients, the combination of a polymeric binder resin and an indolinospirobenzothiopyran compound represented by the general formula (I): ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are each a hydrogen atom, a halogen atom, an alkyl group containing from 1 to 5 carbon atoms, an alkoxy group containing from 1 to 5 carbon atoms, an alkoxymethyl group containing from 1 to 5 carbon atoms in the alkoxy group, a hydroxymethyl group or an alkylaminomethyl group containing 2 to 6 carbon atoms in the alkyl group. The optical recording medium has a colored image which is very stable against heat and visible light.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: June 28, 1988
    Assignee: Sony Corporation
    Inventors: Seiichi Arakawa, Hirofumi Kondo, Nobutoshi Asai, Junetsu Seto
  • Patent number: 4725527
    Abstract: The invention relates to a photosensitive composition for direct positive color photography. The photosensitive composition comprises a binder containing a plurality of grains of a semiconductor material, each grain having adsorbed on its surface one of three different complexes of spiropyran with a metal salt, each complex being sensitive to a different wavelength of light, a cross-linkable polymer and a free radical initiator. The photographic composition provides a non-silver photographic process based on the photo-decomposition of the metal-spiropyran complex absorbed on the grains of semiconductor material.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: February 16, 1988
    Assignee: Richard L. Scully
    Inventor: Jean J. A. Robillard
  • Patent number: 4701402
    Abstract: A radiation-sensitive element capable of recording an image upon image-wise exposure to radiation of selected wavelength, the element comprising, as the image-forming components, an effective amount of a bleachable dye in reactive association with an iodonium ion. Suitable dyes include polymethine dyes having an oxidation potential between 0 and +1 volt.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: October 20, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, Ian J. Ferguson, Herbert J. Pennicott
  • Patent number: 4681835
    Abstract: A method of processing a silver halide color photographic material, which comprises processing a photographic material containing at least one pyrazoloazole type magenta coupler represented by the general formula (I) in a final bath containing a soluble iron salt in an amount of at least 1.times.10.sup.-4 mol/l, whereby marked improvements in stabilization of color images, especially cyan dye images and prevention of yellow stain are achieved: ##STR1## wherein R.sub.1 represents a hydrogen atom or a substituent, X represents a hydrogen atom or a group capable of being eliminated by the coupling reaction with an oxidation product of an aromatic primary amine developing agent, and Z.sub.a, Z.sub.b and Z.sub.c each represents methine group, a substituted methine group, .dbd.N-- or --NH--, provided that one of the Z.sub.a -Z.sub.b and Z.sub.b -Z.sub.c bonds is a double bond and the other is a single bond, in which when it represents a double bond the Z.sub.b -Z.sub.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: July 21, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Kiyoshi Nakazyo
  • Patent number: 4622286
    Abstract: Photoimaging composition comprising an admixture of leuco dye, and at least one 2,4,5-triphenylimidazolyl dimer prepared by an oxidative coupling reaction, a reaction product, 2,2',5-tris-(o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4',5'-diphenylbiimida zole, being present in an amount of 0.01 to 90.0% by weight based on the weight of solids in the composition. The composition when coated on a support is useful for prepress proofing.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: November 11, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas M. Sheets
  • Patent number: 4556625
    Abstract: The present invention discloses a method of photolytically developing a colored image on a cellulosic material. In this method, the material is contacted with a nitrogen containing polymer in solution and a mono-sulfonyl azide compound in solution. The sample is thereafter exposed to a UV-containing light source for an amount of time sufficient to develop a color thereon.
    Type: Grant
    Filed: November 25, 1983
    Date of Patent: December 3, 1985
    Assignee: Armstrong World Industries, Inc.
    Inventors: Ronald S. Lenox, Anne L. Schwartz, Charles E. Hoyle
  • Patent number: 4538252
    Abstract: A method for capacitatively storing data on a grooveless storage device is provided. The storage device is comprised of a conductive substrate having a layer of a photosensitive composition which dielectric constant is varied in the presence of irradiation. The method is carried out by exposing a layer of a photosensitive composition to irradiation in a predetermined pattern. The exposed layer is fixed by heating. Video disks for recording and playing back video signals can be prepared in accordance with the present method.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: August 27, 1985
    Assignee: International Business Machines Corporation
    Inventor: Ari Aviram
  • Patent number: 4529681
    Abstract: A light- and heat-sensitive recording material is disclosed. The material include microcapsule in which are encapsulated a particular combination comprised of a vinyl compound, a photopolymerization initiator, and a color forming component being capable of undergoing a color reaction with another color forming component to cause color formation. These coloring components are provided on the same side of a support.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: July 16, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshimasa Usami, Toshiharu Tanaka, Masato Satomura
  • Patent number: 4447521
    Abstract: Imaging systems comprising a tetra(hydrocarbyl)borate and a bleachable dye may be rendered desensitizable by the inclusion of a second bleachable dye which absorbs radiation in a different portion of the electromagnetic spectrum than the first bleachable dye.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: May 8, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George V. D. Tiers, Steven M. Aasen, Rex J. Dalzell, Brian N. Holmes
  • Patent number: 4403031
    Abstract: Optical patterns formed by localized optical density or refractive index variations in glass are produced by impregnating a porous glass support with a photolyzable organometallic compound and selectively exposing the glass to a photolyzing light source to cause the photolytic decomposition of the organometallic compound in exposed portions of the glass. The patterns are fixed, if desired, by removing unreacted organometallic compound from the pores.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: September 6, 1983
    Assignee: Corning Glass Works
    Inventors: Nicholas F. Borrelli, David L. Morse
  • Patent number: 4379835
    Abstract: A thermographic imaging system comprising a single layer and capable of providing a stable dark to black image upon localized heating is disclosed. The single layer comprises a polymeric binder, a combination of at least two leuco dyes, and a nitrate salt.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: April 12, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert D. Lowrey, Howard D. Nelson, George Van Dyke Tiers
  • Patent number: 4368254
    Abstract: A non-silver light-sensitive composition according to the invention consists of the following components, in percent by weight;______________________________________ a hydroxyderivative of naphthalene 1 to 10 an aromatic amine 29 to 60 saturated halogenated hydrocarbon 35 to 29 a polymeric binder 35 to 1. ______________________________________The composition of the present invention makes it possible to produce light-sensitive layers which have an increased sensitivity (2.times.10.sup.-4 J/cm.sup.2 at 365 nm) and a low optical fog density (D. below 0.05).
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: January 11, 1983
    Inventors: Anatoly V. Vannikov, Vadim G. Glotov, Antonina D. Grishina, Valentina N. Ivanova, Vladimir S. Fedorov, Gennady M. Chernov, Vladimir E. Kazarinov
  • Patent number: 4360587
    Abstract: This invention relates to a radiation-sensitive, silver-free recording material for direct optical recording with high sensitivity, characterized by its exceptional resistance to light and heat and large solubility. This is achieved by the fact that the recording material contains as coloring substances, azo dyestuffs of the general formula ##STR1## R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 are the same or different and are halogen, alkoxy, alkyl, acetyl, amino; R.sub.8 hydroxy, alkoxy or acetylamino. The material distinguishes itself by the different processing variations that are possible so that with a same basic type, it is possible to obtain pictures operating according to a positive principle as well as according to a negative principle.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: November 23, 1982
    Assignee: VEB Filmfabrik Wolfen
    Inventors: Carmen Haessner geb. Michael, Heinz Mustroph, Jorg Marx
  • Patent number: 4345011
    Abstract: Color filter arrays for color imaging devices are disclosed. The arrays are formed in a single layer of a transparent binder containing at least one cationic photo-bleachable dye. The layer has a thickness less than 10 microns, and the dye is present in the layer in an amount sufficient to impart a density to the layer of at least about 0.5 in that portion of the spectrum in which it selectively absorbs. A method of making the arrays is also disclosed which includes the steps of (1) forming a layer of a transparent binder containing the photo-bleachable dye or dyes and a sensitizer; (2) exposing the layer to a pattern which represents a set of filter elements so as to photo-bleach the photo-bleachable dye; and (3) fixing the layer by leaching the sensitizer from the layer. In particularly preferred embodiments, the dyes are chosen so that those which absorb at longer wavelengths have a lower bleaching efficiency than those which absorb at shorter wavelengths.
    Type: Grant
    Filed: September 11, 1980
    Date of Patent: August 17, 1982
    Assignee: Eastman Kodak Company
    Inventor: Karl H. Drexhage
  • Patent number: 4343891
    Abstract: A method for forming an image includes the step of desensitizing a radiation sensitive imaging system comprising a dye and a tetra (hydrocarbyl) borate in a binder by converting the tetra (hydrocarbyl) borate to a compound having fewer than four carbon-to-boron bonds.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: August 10, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Aasen, Rex J. Dalzell, Edward J. Goettert, Brian N. Holmes, George V. D. Tiers