Dye Developer Or Leuco Dye Developer Patents (Class 430/243)
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Patent number: 7163782Abstract: A photothermographic imaging material including an organic silver salt, a binder, a reducing agent, coupler and a main developing agent which forms coloring images by reacting with the coupler, those which are on a support wherein the reducing agent comprises a compound represented by the following Formula (1), the coupler is a compound represented by the following Formula (CP1) and sum of maximum density of colorant images at maximum absorption wavelength formed by the coupler and the main developing agent is 0.01 or more and 0.Type: GrantFiled: March 23, 2004Date of Patent: January 16, 2007Assignee: Konica Minolta Holdings, Inc.Inventor: Narito Goto
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Patent number: 7141359Abstract: The object of the present invention is to provide a novel developer capable or realizing a thermal recording material superior in preservation stability (i.e., heat resistance, moisture resistance) of color images and non-image areas, while satisfying the recent request for high sensitivity, and a thermal recording material using the developer.Type: GrantFiled: May 31, 2002Date of Patent: November 28, 2006Assignees: API Corporation, Nippon Paper Industries, Co., Ltd.Inventors: Mamoru Suga, Kaori Suzuki, Yoshihide Kimura, Naomi Sumikawa
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Patent number: 7115359Abstract: A photothermographic material having a support provided on at least one side of the support light-sensitive silver halide particles, an organic silver salt and a reducing agent, as well as a leuco dye of a specific structure and a compound of a specific structure.Type: GrantFiled: July 15, 2004Date of Patent: October 3, 2006Assignee: Konica Minolta Medical & Graphic, Inc.Inventors: Yasushi Usagawa, Takeshi Habu
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Patent number: 7005251Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more ?m and 0.04 ?m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.Type: GrantFiled: November 20, 2003Date of Patent: February 28, 2006Assignee: Konica Minolta Holdings, Inc.Inventors: Hiroshi Kashiwagi, Narito Goto
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Publication number: 20040106074Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more &mgr;m and 0.04 &mgr;m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.Type: ApplicationFiled: November 20, 2003Publication date: June 3, 2004Applicant: Konica Minolta Holdings, Inc.Inventors: Hiroshi Kashiwagi, Narito Goto
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Patent number: 5698365Abstract: A heat development color photographic material excellent in discrimination and raw preservability of images, which comprises a support, and at least a light-sensitive silver halide, a binder, a coupler and a reducing agent formed thereon, in which a 2-acylamino-4-sulfonamidophenol derivative represented by the following general formula (I) is contained as said reducing agent: ##STR1## wherein R.sub.1 represents a substituent group (for example, alkyl or aryl); R.sub.2 to R.sub.4 each represents hydrogen or a substituent group (for example, halogen, alkyl or aryl); and R.sub.5 represents a substituent group (for example, alkyl or aryl).Type: GrantFiled: March 17, 1997Date of Patent: December 16, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Taguchi, Koki Nakamura
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Patent number: 5587270Abstract: The present invention concerns a thermal imaging process using (i) a donor element comprising on a support a donor layer comprising a binder and a thermally transferable reducing agent capable of reducing a silver source to metallic silver upon heating and an oxidised form of the reducing agent being colored or being capable of forming a color and (ii) a receiving element comprising on a support a receiving layer comprising a silver source capable of being reduced by means of heat in the presence of a reducing agent and comprising the steps of:bringing said donor layer of the donor element in face-to-face relationship with the receiving layer of the receiving element,image-wise heating a thus obtained assemblage to cause image-wise transfer of the thermally transferable reducing agent from the donor layer to the receiving layer in accordance with the amount of heat applied andseparating the donor element from the receiving element.Type: GrantFiled: March 8, 1995Date of Patent: December 24, 1996Assignee: Agfa-Gevaert N.V.Inventors: Wilhelmus Janssens, Jan Van den Bogaert, Luc Vanmaele, Geert Defieuw
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Patent number: 5332654Abstract: A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form. Preferred embodiments comprise xanthene sulfonamides having N-aryl substituents, e.g., hydroquinone substituents. These compounds possess redox potentials ranging between about +200 to -500 millivolts and thus are useful as dyes for producing photographic, photothermographic, thermal, and pressure-induced images, as well as being useful as redox indicators in a wide variety of biological and chemical reactions.Type: GrantFiled: June 11, 1993Date of Patent: July 26, 1994Assignee: Polaroid CorporationInventors: Myron S. Simon, Marcis M. Kampe, David P. Waller
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Patent number: 4980265Abstract: A color photosensitive material and a process for producing an image using such a material are disclosed. The color photosensitive material comprises a support having thereon a silver halide and a dye releasing compound represented by formula (A). ##STR1## wherein Ar and Ar', which may be the same or different, each represents an aromatic group or a heterocyclic group, Ar and Ar' may be joined together to form a ring, and R represents an aromatic group, a heterocyclic group or a sulfonyl group.Type: GrantFiled: August 17, 1989Date of Patent: December 25, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Sato, Hiroyuki Hirai
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Patent number: 4957848Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a nondiffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.Type: GrantFiled: May 10, 1988Date of Patent: September 18, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Osamu Takahashi, Koichi Koyama, Keizo Koya
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Patent number: 4766056Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a non-diffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.Type: GrantFiled: February 21, 1986Date of Patent: August 23, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Osamu Takahashi, Koichi Koyama, Keizo Koya
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Patent number: 4619784Abstract: There are disclosed diffusion transfer color processes and products which employ novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## X is H, alkyl, aryl or substituted aryl; W is H or alkyl, R is H or alkyl; m and n are each integers of from 2 to 6.The image dye-providing material includes a diffusion control moiety such as a hydroquinonyl group and may be diffusible or nondiffusible as a function of the diffusion control moiety.Type: GrantFiled: October 27, 1980Date of Patent: October 28, 1986Assignee: Polaroid Corporation, Patent Dept.Inventors: Louis Locatell, Jr., Charles M. Zepp, Ronald F. Cieciuch
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Patent number: 4481278Abstract: Novel chrome complexed azo and azomethine yellow dye developers which include a substantially colorless symmetrical ligand. Also disclosed are photographic products and processes which utilize the dye developers.Type: GrantFiled: October 29, 1982Date of Patent: November 6, 1984Assignee: Polaroid CorporationInventors: Patrick F. King, Stephen G. Stroud
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Patent number: 4425422Abstract: A method for the formation of a color photographic image comprising exposure and development of a photographic element, said photographic element comprising at least one silver halide emulsion layer, a compound capable of releasing a diffusible azo dye compound during development, and at least one mordant layer arranged on a support. The color image formation is effected by the reaction of multivalent metallic ions with an azo dye compound having the formula: ##STR1## wherein G.sup.1 is an alkoxy or a thioalkoxy metallic chelating group; G.sup.2 is a metallic chelating group in which an oxygen atom is involved in the chelate formation; and Z.sup.1 and Z.sup.2 each is a group of atoms necessary to form an aromatic carbocyclic ring or a heterocyclic ring. The azo dye compound and the metallic ions form a metal complex by coordination of the azo group and the G.sup.1 and G.sup.2 groups of the azo dye compound with the multivalent metallic ions.Type: GrantFiled: May 6, 1982Date of Patent: January 10, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tawara Komamura, Jiro Takahashi, Ryuichiro Kobayashi
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Patent number: 4386150Abstract: Diffusion transfer photographic color processes and products are described utilizing novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein X is ##STR2## or --SO.sub.2 --R.sub.1 ; Z is H, alkyl or aryl; R is H, alkyl or aryl; DYE is any dye moiety; R.sub.1 is H, alkyl, aryl, --NH.sub.2, --NHR.sub.2, --N(R.sub.2).sub.2 or --OR.sub.2 ; R.sub.2 is H, alkyl or aryl; and m is 1 or 2. The image dye providing material includes a diffusion control moiety such as a hydroquinonyl group or a precursor thereof and may be diffusible or nondiffusible as a function of the diffusion control moiety.Type: GrantFiled: December 18, 1981Date of Patent: May 31, 1983Assignee: Polaroid CorporationInventors: Stephen R. Herchen, Gary N. Widiger
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Patent number: 4346161Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-(2-thienylazo)-3-pyridinol cyan dye moiety or precursor thereof, the compound containing:(a) in the 3-position of the thienylazo moiety a carboxy group, a salt thereof or a hydrolyzable precursor thereof; and(b) a ballasted carrier moiety which is capable of releasing the diffusible 6-(2-thienylazo)-3-pyridinol dye moiety or precursor thereof under alkaline conditions.Type: GrantFiled: April 29, 1981Date of Patent: August 24, 1982Assignee: Eastman Kodak CompanyInventors: James J. Krutak, Robert J. Maleski, William H. Moore
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Patent number: 4342818Abstract: A process for forming a color filter, which comprises patternwise exposing a black-and-white silver halide emulsion layer of a photographic material comprising a support having thereon at least one black-and-white silver halide emulsion layer, developing the photographic material with a developing solution containing a color dye developer to form a pattern containing a color dye for a pattern containing at least one dye, and removing remaining silver and/or silver halide. The patternwise exposure and color coupler containing development steps can be repeated using different color couplers to produce patterns with additional color dyes.Type: GrantFiled: December 22, 1980Date of Patent: August 3, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Yukio Yokota, Masamichi Sato, Kenji Matsumoto
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Patent number: 4267251Abstract: There are disclosed diffusion transfer color processes and products which employ novel image dye-providing materials which provide image dyes having the chromophoric system represented by the formula ##STR1## wherein A is ##STR2## X is H, alkyl, aryl or substituted aryl; W is H or alkyl, R is H or alkyl; m and n are each integers of from 2 to 6.The image dye-providing material includes a diffusion control moiety such as a hydroquinonyl group and may be diffusible or nondiffusible as a function of the diffusion control moiety.Type: GrantFiled: December 26, 1979Date of Patent: May 12, 1981Assignee: Polaroid CorporationInventors: Louis Locatell, Jr., Charles M. Zepp, Ronald F. Cieciuch
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Patent number: 4264701Abstract: Diffusion transfer color processes and products are disclosed employing image-dye providing materials providing magenta image dyes having the chromophoric system represented by the formula ##STR1## wherein each R is the same or different and is an alkyl group, and each X is the same or different and is hydrogen or an alkyl group (including substituted alkyl). The dye image-providing material includes a diffusion control moiety, such as a hydroquinonyl group, and may be diffusible or nondiffusible as a function of the diffusion control moiety.Type: GrantFiled: April 24, 1980Date of Patent: April 28, 1981Assignee: Polaroid CorporationInventors: Louis Locatell, Jr., Howard G. Rogers, Ruth C. Bilofsky, Ronald F. Cieciuch, Charles M. Zepp
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Patent number: 4248956Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a novel dye developer compound having a dye moiety such as an arylazo-pyrazolotriazole. The compound contains:(a) a nitrogen atom in a metal chelating location in at least one of the rings attached to the azo group;(b) in the ortho position of the arylazo moiety a metal chelating group (or a salt thereof or a hydrolyzable precursor thereof), and(c) a silver halide developer moiety.The dye developer is transferred imagewise to an image-receiving layer where it is contacted with metal ions to form a metal-complexed dye developer transfer image of excellent stability.Type: GrantFiled: March 2, 1979Date of Patent: February 3, 1981Assignee: Eastman Kodak CompanyInventors: Brian D. Baigrie, Joseph Bailey, Linda G. Johnston, Miroslav V. Mijovic
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Patent number: 4234672Abstract: Shifted photographic dyes which have good storage stability, yet rapidly unblock under processing conditions contain a blocked hydroxy group and a neighboring group that anchimerically assists the hydrolytic cleavage of the blocking group under processing conditions.Type: GrantFiled: October 10, 1978Date of Patent: November 18, 1980Assignee: Eastman Kodak CompanyInventors: John A. Ford, Gregory J. Lestina
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Patent number: 4205987Abstract: Photographic elements, film units and processes are described wherein certain ballasted di-2,5-sulfonamidophenols are used to scavenge oxidized electron transfer agents in color image transfer materials. The scavenger compounds can be located in an emulsion layer, a dye image-providing material layer or an interlayer.Type: GrantFiled: November 15, 1978Date of Patent: June 3, 1980Assignee: Eastman Kodak CompanyInventors: Wayne F. Erikson, Robert E. Ross
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Patent number: 4204993Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-arylazo-2-amino-3-pyridinol dye moiety or precursor thereof. The compound contains in the ortho position of the arylazo moiety a ballasted carrier moiety attached thereto either through a sulfonamido linking group or through the oxygen of a ##STR1## which said ballasted carrier moiety contains, the ballasted carrier moiety being capable of releasing the diffusible 6-arylazo-2-amino-3-pyridinol dye or precursor thereof under alkaline conditions. The dye is transferred imagewise to an image-receiving layer, where it is contacted with metal ions to form a metal-complexed 6-arylazo-2-amino-3-pyridinol dye transfer image of excellent stability.Type: GrantFiled: January 16, 1979Date of Patent: May 27, 1980Assignee: Eastman Kodak CompanyInventor: Derek D. Chapman
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Patent number: 4203766Abstract: This invention is concerned with the use of certain pyridine N-oxides in diffusion transfer products and processes employing dye developers.Type: GrantFiled: April 30, 1979Date of Patent: May 20, 1980Assignee: Polaroid CorporationInventors: Gerard J. Bourgeois, Russell A. Gaudiana, Ronald A. Sahatjian