Sequestrant Patents (Class 430/491)
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Patent number: 5155004Abstract: A chitosan or chitin compound having a photographically useful residue. There is also disclosed a method for processing a silver halide photographic material which comprises processing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer in the presence of said chitosan or chitin compound represented by the following general formula (I) ##STR1## wherein the substituents are defined in the instant specification.Type: GrantFiled: March 13, 1991Date of Patent: October 13, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Tetsuro Kojima
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Patent number: 5147767Abstract: An environmentally-safe, non-toxic non-hydroquinone and non-alkali metal hydroxide containing photographic developer composition is provided comprising a developer selected from the group consisting of 2-keto gluconic acid and derivatives thereof, together with a sulfite, an alkali metal carbonate, and a 3-pyrzaolidone developer compound.Type: GrantFiled: April 10, 1991Date of Patent: September 15, 1992Inventor: Audenried W. Knapp
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Patent number: 5098819Abstract: An environmentally-safe, non-toxic non-hydroquinone and non-alkali metal hydroxide containing photographic developer composition is provided comprising a developer selected from the group consisting of ascorbic acid and sugar-type derivatives thereof, stereoisomers and diastereoisomers of ascorbic acid and its sugar-type derivatives, their salts and mixtures thereof, together with a sulfite, an alkali metal carbonate, and a 3-pyrazolidone developer compound.Type: GrantFiled: January 28, 1991Date of Patent: March 24, 1992Inventor: Audenried W. Knapp
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Patent number: 5094937Abstract: There is disclosed a method for processing a silver halide color photographic material with a color developer containing a hydroxylamine compound and at a small opened surface ratio of the color developer by using an automatic processor. According to the disclosure, a rapid development excellent in decreasing the fluctuation of photographic properties for a high-silver-chloride silver halide color photographic material can be carried out.Type: GrantFiled: July 31, 1990Date of Patent: March 10, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Kiyoshi Morimoto
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Patent number: 5077179Abstract: A method for processing silver halide photosensitive materials comprises replenishing each of replenishers to water washing process and/or stabilization process in an amount of 1 to 50 times the volume of a solution carried over from a bath preceding the water washing process and/or the stabilization process per unit area of the photosensitive material and limiting the amount of calcium compounds included in a layer for constituting photograph of the photosensitive material to not more than 25 mg/m.sup.2 on the basis of the weight of elemental calcium. The method makes it possible to effectively suppress the contamination of the processed photosensitive materials, the increase in turbidity of the water washing and/or stabilization bath solutions and the proliferation of bacteria or molds in these baths. These effects are further enhanced by reducing the amount of calcium and magnesium present in the replenishers for washing and/or stabilization.Type: GrantFiled: October 9, 1987Date of Patent: December 31, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Yoshihiro Fujita, Nobuo Sakai
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Patent number: 5055381Abstract: In a method for processing silver halide photosensitive materials comprising developing an exposed silver halide photosensitive material, fixing the developed material and washing it with a washing water, the amount of calcium and magnesium compounds present in the replenishing washing water is reduced to not more than 5 mg/l on the basis of the weight of elemental calcium or magnesium and washing water is replenished in an amount of 1 to 50 times the volume of liquid carried over by the photosensitive material from a bath preceding the washing bath per unit area thereof or that the replenishing washing water is introduced into a washing bath after reducing the amount of calcium and magnesium compounds to the range mentioned above and sterilizing the same. The method makes it possible to substantially reduce the amount of washing water while reliably suppressing turbidity and proliferation of microorganisms in the washing water during and after completion of processing.Type: GrantFiled: June 3, 1987Date of Patent: October 8, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Yoshihiro Fujita, Toshio Koshimizu
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Patent number: 5053322Abstract: A method for processing a silver halide color photographic material is disclosed, comprising a support having a thin film of metal or metal oxide on a substrate; said thin film having mirror surface reflection properties or secondary diffuse reflection properties and having a surfaced reflectance of at least 0.5; said photographic material having thereon, in order outwardly from the support, an adhesive layer and at least one light-sensitive silver halide emulsion layer, by the steps which comprise developing the silver halide color photographic material with a developing bath containing a color developing agent and at least one compound represented by formulae (I), (II), (III) or (IV): ##STR1## wherein M each represents hydrogen, an alkali metal or an ammonium group; and R.sub.1 represents a lower alkyl group; ##STR2## wherein R.sub.2 R.sub.3 and R.sub.4 each represents --COOM, --PO.sub.3 M.sub.Type: GrantFiled: October 27, 1989Date of Patent: October 1, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Akira Abe
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Patent number: 5037727Abstract: Potassium iodide (or a related iodide) when incorporated in an alkaline activator for use in a rapid access processor using developer-incorporated, resin-coated paper, (i) produces a cold image tone in black-and-white photographic prints, and (ii) maintains the image tone of a large number of prints within a narrow image tone range over a (one week or one thousand 8.times.10 inch print) design life of the activator solution.Type: GrantFiled: July 9, 1990Date of Patent: August 6, 1991Assignee: Eastman Kodak CompanyInventor: Donald F. McLaen
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Patent number: 5034308Abstract: A method for processing silver halide photosensitive materials comprising developing an exposed silver halide photosensitive material, fixing the developed photosensitive material and then washing it with a washing water, the washing water used in the water washing process being replenished in an amount of 2 to 50 times the volume of liquid carried over by the photosensitive material from a bath preceding the water washing bath per unit area thereof, the amount of calcium and magnesium compounds present in the water washing bath being reduced to not more than 5 mg/l, respectively, on the basis of elemental calcium and magnesium and the washing water containing at least one chelating agent having a stability constant of a chelate, which is formed between the chelating agent and calcium or magnesium, of at least 6 is herein disclosed.Type: GrantFiled: August 19, 1987Date of Patent: July 23, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Yoshihiro Fujita, Toshio Koshimizu, Kazuhiro Aikawa
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Patent number: 4994359Abstract: The present invention relates to a silver halide color photographic light-sensitive material comprising (i) at least one 5-pyrazolone magenta coupler possessing an elimination group represented by general formula (I) in coupling posiitons, and (ii) at least one compound represented by general formula (A): ##STR1## wherein L.sub.1 and L.sub.2 each represents a methylene group or an ethylene group;l and m each represents 0 to 1;R.sub.1 represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a heterocyclic group;R.sub.2 represents a group linked to A by a carbon atom, an oxygen atom, a nitrogen atom or a sulfur atom;A represents a carbon atom or a sulfur atom;n represents 1 when A is a carbon atom, and 1 or 2 when A is a sulfur atom;B represents a carbon atom, an oxygen atom, a nitrogen atom or a sulfur atom;X represents an atomic group necessary for forming a ring;R.sub.1 and R.sub.2 may be mutually bonded and form a ring; and when B is a carbon atom or a nitrogen atom, B and R.sub.Type: GrantFiled: July 31, 1989Date of Patent: February 19, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Morigaki, Kiyoshi Nakazyo
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Patent number: 4987058Abstract: A processing method without washing gives good photographic properties, without a precipitate being deposited in the stabilizing bath, when the bleach-fixing bath contains a compound of the formulaFe(X).sub.2 DTPA,whereinX denotes alkali or ammonium,as bleaching agent, and the stabilizing bath contains a fungicide, HEDP and a hexametaphosphate.Type: GrantFiled: June 13, 1990Date of Patent: January 22, 1991Assignee: Agfa-Gevaert AktiengesellschaftInventors: Erika Spriewald, Gustav Tappe, Heinz Meckl
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Patent number: 4987060Abstract: A concentrated alkaline photographic developer composition, packaged in a single part to be diluted with water to form a ready to use developing solution for silver halide photographic materials, which comprises dihydroxybenzene developing agents, inorganic alkali agnets, inorganic antioxidant agents, sequestering agents and antifoggants, wherein said inorganic antioxidant agents comprise Na.sub.2 SO.sub.3 (sodium sulfite) and K.sub.2 SO.sub.3 (potassium sulfite) in a molecular ratio of 1:1 to 1:3 in an amount of from 1.6 to 4 moles per liter, the molecular ratio between said inorganic antioxidant agents and the developing agents is from 1.50 and 4.00, and said concentrated developer composition has a specific gravity higher than 1.300 at 20.degree. C.Type: GrantFiled: March 23, 1990Date of Patent: January 22, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Carlo Marchesano
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Patent number: 4985347Abstract: A method for processing silver halide color photographic material is disclosed which comprises processing a silver halide color photographic material with a color developer containing substantially no sulfite ion and then processing the color photographic material with a solution having bleaching capability containing an aminopolycarboxylic acid having a molecular weight of at least 300.Type: GrantFiled: July 25, 1990Date of Patent: January 15, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Fujimoto, Morio Yagihara, Takatoshi Ishikawa
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Patent number: 4975357Abstract: Hydroxylamine compounds are commonly included in photographic color developing solutions to retard aerial oxidation. When the photographic element processed in the color developing solution is one which contains an aromatic polyhydroxy compound which serves as a stabilizing addendum, there will be a build-up of the level of such compound in the developing solution as seasoning occurs. Also, as a consequence of seasoning, there is a gradual build-up of the level of trace metal impurities in the solution. Interaction of a trace metal impurity with the aromatic polyhydroxy compound can form a metal-complex which catalyzes the oxidation of the hydroxylamine compound and thereby renders it ineffective for its intended purpose. In the improved method of this invention, the color developing solution is protected against the unwanted metal-complex catalyzed oxidation by incorporation therein of an aminopolycarboxylic acid sequestering agent.Type: GrantFiled: May 23, 1989Date of Patent: December 4, 1990Assignee: Eastman Kodak CompanyInventors: Jean M. Buongiorne, Janet M. Huston, Paul A. Schwartz, Sheridan E. Vincent
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Patent number: 4963474Abstract: A method of processing a silver halide color photographic material in which the material is, after color-developed, processed in a bath having bleaching ability and then in a bath having fixing ability, wherein a bleaching agent in the bath having bleaching ability is at least one iron(III) complex of an aminopolycarboxylic acid of the following formula (I) and the bath having fixing ability contains at least one organic phosphonic acid: ##STR1## wherein n represents 3, 4 or 5, and is preferable 3.Type: GrantFiled: February 13, 1989Date of Patent: October 16, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiro Fujita, Shinji Ueda, Takatoshi Ishikawa, Akira Abe
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Patent number: 4960684Abstract: A silver halide color photographic material is processed with a color developer containing at least one compound of the following formula (I) and at least one compound of the following formula (II): ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group;R.sup.4 represents a hydrogen atom, a hydroxyl group, a hydrazino group, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, a carbamoyl group or an amino group;X.sup.1 represents a divalent group;n represents 0 or 1; and when is 0, R.sup.4 represents an alkyl group, an aryl group or a heterocyclic group; and R.sup.3 and R.sup.4 may together form a heterocyclic group; ##STR2## where Z represents an atomic group necessary for completing an aromatic nucleus.Type: GrantFiled: January 23, 1989Date of Patent: October 2, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Hiroshi Fujimoto, Morio Yagihara, Kazuto Andoh
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Patent number: 4956267Abstract: A method for forming a direct positive color image by image-wise exposing to light a light-sensitive material having at least one internal latent image type silver halide emulsion layer which is unfogged and color image-forming couplers on a support; either (1) subjecting the resulting material to fogging exposure to light and/or processing it with a nucleating agent before development, and then developing the resulting material with a surface developing solution containing an aromatic primary amine type color developing agent, or (2) developing the material after the image-wise exposure with a surface developing solution containing an aromatic primary amine type color developing agent under fogging exposure and/or in the presence of a nucleating agent; and bleach-fixing the resulting material, wherein the color developing solution contains at least one compound selected from the group consisting of compounds represented by the following general formulae (I), (II), (III) and (IV): ##STR1## wherein X representType: GrantFiled: May 31, 1988Date of Patent: September 11, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Tatsuo Heki, Noriyuki Inoue, Takatoshi Ishikawa, Nobutaka Ohki, Morio Yagihara, Kiyoshi Morimoto, Hiroshi Fujimoto, Kazuto Andoh
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Patent number: 4948710Abstract: A method of continuously processing an imagewise exposed silver halide color photographic light-sensitive material is described, in which subsequent to a bleach-fixing step or bleaching and fixing steps the material is washed in a water washing step in the presense of at least one compound represented by general formula (I): ##STR1## wherein M is a hydrogen atom, a lithium atom, a sodium atom, a potassium atom or an ammonium ion and each M may be the same or different.This method permits great reduction of the amount of water used in the washing step in the processing of silver halide color photographic light-sensitive materials.Type: GrantFiled: July 17, 1989Date of Patent: August 14, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Shinzo Kishimoto
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Patent number: 4948713Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.Type: GrantFiled: March 27, 1989Date of Patent: August 14, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Satoru Kuse, Masao Ishikawa
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Patent number: 4927746Abstract: A stabilizing bath which provides reduced stain and enhanced dye stability for photographic color elements which are processed therein is comprised of a dye stabilizing agent, an alkanolamine, and polyacrylic acid or a water-soluble salt thereof. The stabilizing bath is used as a final processing bath which follows treatment of the element in a fixing or bleach-fixing bath containing a thiousulfate fixing agent. The alkanolamine functions to prevent the precipitation of sulfur resulting from carryover of the thiosulfate fixing agent into the stabilizing bath, while the polyacrylic acid or water-soluble salt thereof functions to avoid the formation of unwanted precipitates.Type: GrantFiled: June 3, 1988Date of Patent: May 22, 1990Assignee: Eastman Kodak CompanyInventor: Paul A. Schwartz
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Patent number: 4923782Abstract: A stabilizing bath which provides reduced stain and enhanced dye stability for photographic color elements which are processed therein is comprised of a dye stabilizing agent, an alkanolamine, and a hydrolyzed polymaleic anhydride or water-soluble salt thereof. The stabilizing bath is used as a final processing bath which follows treatment of the element in a fixing or bleach-fixing bath containing a thiosulfate fixing agent. The alkanolamine functions to prevent the precipitation of sulfur resulting from carryover of the thiosulfate fixing agent into the stabilizing bath, while the hydrolyzed polymaleic anhydride or water-soluble salt thereof functions to avoid the formation of unwanted precipitates.Type: GrantFiled: June 3, 1988Date of Patent: May 8, 1990Assignee: Eastman Kodak CompanyInventor: Paul A. Schwartz
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Patent number: 4912015Abstract: A method of forming an image by silver salt diffusion transfer comprising (a) developing a light-sensitive element including an imagewise exposed light-sensitive silver halide emulsion layer with an alkali processing solution comprising a silver halide solvent to convert at least a portion of unexposed silver halide in the emulsion layer into a transferable silver complex salt, and (b) transferring at least a portion of the silver complex salt to an image-receiving element containing a silver precipitating agent to form an image on the image-receiving layer, wherein the processing is carried out in the presence of an organic phosphonic acid compound.Type: GrantFiled: September 16, 1988Date of Patent: March 27, 1990Assignee: Fuji Photo Film Co., Ltd.Inventor: Yoshio Idota
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Patent number: 4906554Abstract: This invention relates to a color developing solution for processing of a light-sensitive silver halide color photographic material which comprises containing a compound represented by the following formula [I] and at least one compound selected from a compound represented by the following formula [II] and a compound represented by the following formula [III], and a processing method of a light-sensitive silver halide color photographic material, which comprises, after imagewise exposure of a light-sensitive silver halide color photographic material, carrying out processing including at least a color developing step, wherein the light-sensitive silver halide color photographic material has silver halide emulsion layers containing silver halide grains substantially comprised of silver chloride, and a color developing solution used in the color developing step contains the compound represented by the following formula [I] and at least one compound selected from the compound represented by the following formulaType: GrantFiled: December 11, 1987Date of Patent: March 6, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Ishikawa, Shigeharu Koboshi, Kazuhiro Kobayashi, Keiji Ohbayashi, Mitsuhiro Okumura, Shigeo Chino, Kaoru Onodera
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Patent number: 4900651Abstract: A method for processing a silver halide color photographic material is disclosed, which comprises developing a silver halide color photographic material with a color developer comprising:(a) an aromatic primary amine color developing agent;(b) at least one brightening agent represented by formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydroxyl group, an alkoxy group, an amino group, an alkylamino group, an aryloxy group or an arylamino group; provided that R.sub.1 is not the same as R.sub.3 when R.sub.2 is the same as R.sub.4, and R.sub.1 is not the same as R.sub.4 when R.sub.2 is the same as R.sub.3 ; and M represents a monovalent cation; and(c) at least one organic phosphonic acid series chelating agent.Type: GrantFiled: February 22, 1988Date of Patent: February 13, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Hiroshi Fujimoto
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Patent number: 4892804Abstract: Photographic color developing compositions which are especially useful in the processing of high chloride silver halide photographic elements are free, or at least substantially free, of bromides; optionally contain a small amount of sulfite; and comprise (1) a primary aromatic amino color developing agent, (2) an N,N-dialkylhydroxylamine, (3) at least one sequestering agent which functions to sequester iron and (4) at least one sequestering agent which functions to sequester calcium. The developing compositions exhibit excellent stability. They also provide minimal development restraint which permits the use of very short development times, as needed for rapid access processing.Type: GrantFiled: August 16, 1988Date of Patent: January 9, 1990Assignee: Eastman Kodak CompanyInventors: Sheridan E. Vincent, Richard W. Berls
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Patent number: 4880725Abstract: A color image is formed by imagewise exposing a color photosensitive material comprising at least a silver halide and a coupler and subjecting the material to intensified development with a processing solution containing a reducing agent and an intensifier. A substantially water-insoluble basic metal compound is previously contained in the silver halide based color photosensitive material, while the processing solution contains a compound capable of complexing reaction with the metal ion of the substantially water-insoluble basic metal compound to release a base.Type: GrantFiled: December 27, 1988Date of Patent: November 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Haruhiko Iwano
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Patent number: 4873180Abstract: The addition to an aqueous alkaline developer composition for silver halide photographic materials of a dialkylaminomethane diphosphonic acid compound sequestering agent increases the resistance of the developer composition against aerial oxidation and inhibits calcareous deposit formation.Type: GrantFiled: April 6, 1988Date of Patent: October 10, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Carlo Marchesano, Franco Buriano, Enrico Furlanetto
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Patent number: 4863836Abstract: There is provided a method for processing a silver halide color photographic material which comprises processing the silver halide color photographic material with a color developer containing an aromatic primary amine color developing agent and a specific amino compound. According to this method the stability and color forming property of a color developer are improved so that the increased fogging problem in continuous processing is lessened and the processing time is shortened. There is also provided a color developer composition which can be used as the developer, as it is or after adjusting its composition.Type: GrantFiled: February 22, 1988Date of Patent: September 5, 1989Assignee: Fuji Photo Film, Co., Inc.Inventors: Takatoshi Ishikawa, Nobutaka Ohki, Morio Yagihara
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Patent number: 4863837Abstract: In a method of processing a light-sensitive silver halide color photographic material, comprising color developing a light-sensitive silver halide color photographic material and thereafter processing it with a processing solution having fixing ability, followed by processing with a water-washing substitute stabilizing solution in a processing tank or tanks comprising 1 to 4 tanks, the improvement wherein said water-washing substitute stabilizing solution contains at least one of the compounds represented by Formula (I) shown below and at least one of nitrilotriacetic acid and the compounds represented by Formula (II) shown below and wherein said light-sensitive silver halide color photographic material is sensitized with at least one sensitizing dye represented by Formula (III) or Formula (IV) shown below: ##STR1## wherein R represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and M represents a hydrogen atom or an alkali metal atom; ##STR2## wherein A represents a carboxyl group or a hydType: GrantFiled: February 2, 1988Date of Patent: September 5, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masayuki Kurematsu, Shigeharu Koboshi
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Patent number: 4855218Abstract: A method for processing silver halide photographic lightsensitive material in which there are used replenishers for water washing and/or stabilization processes in such manner that the concentrations of calcium and magnesium compounds present in the replenishers are not more than 5 mg/l on the basis of elemental calcium and magnesium respectively, and a part or whole of the overflow from the water washing and/or stabilization process is introduced into a process preceding the water washing and/or stabilization processes. This method makes it possible to save water, to diminish the amount of waste liquor and to make effective use of components contained in processing solutions, without impairing any properties of lightsensitive materials to be processed.Type: GrantFiled: February 10, 1988Date of Patent: August 8, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiro Fujita, Akira Abe
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Patent number: 4849333Abstract: A method is disclosed for the processing of an imagewise exposed silver halide color photographic material, wherein at least one of wash water and a stabilizing solution used in a step subsequent to a bleach-fixing step or a fixing step following a bleaching step contains at least one compound represented by formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 each represents a hydrogen atom, a halogen atom, an alkyl group, a substituted alkyl group, an acyl group, a hydroxy group, an amino group, a nitro group, a carboxy group, or a sulfo group.Type: GrantFiled: April 18, 1988Date of Patent: July 18, 1989Assignee: Fuji Photo Cilm Co., Ltd.Inventor: Yoshihiro Fujita
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Patent number: 4837139Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.Type: GrantFiled: July 24, 1987Date of Patent: June 6, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Satoru Kuse, Masao Ishikawa
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Patent number: 4835092Abstract: A novel method for processing a silver halide color photographic material is provided, which comprises processing a silver halide color photographic material having at least one silver halide emulsion layer on a reflective support with a color-developing solution substantially free of benzyl alcohol and containing at least one compound represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, --CH.sub.2 COOH, or ##STR2## R.sub.2 represents a hydrogen atom or --COOH; n represents an integer of 0 or 1; and Z represents atoms necessary for the formation of an aromatic ring.Type: GrantFiled: February 17, 1987Date of Patent: May 30, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Toshio Koshimizu, Yoshihiro Fujita, Hiroshi Fujimoto
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Patent number: 4820623Abstract: A method for processing a silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer and containing a magenta dye forming coupler represented by formula (I) shown below and a compound represented by formula (II) shown below in the same layer is described, wherein the silver halide color photographic material is subjected to color development using a replenisher for a color developing solution, whose concentration of bromide is not more than 3.times.10.sup.-3 mol per liter and the amount of the replenisher for a color developing solution is not more than 900 ml per m.sup.2 of the silver halide color photographic material, wherein ##STR1## wherein R.sub.1 represents an aromatic group, an aliphatic group or a heterocyclic group; R.sub.2 represents a substituent; Za, Zb, Zc and Zd, which may be the same or different, each represents an unsubstituted methine group, a substituted methine group or --N.dbd.; and formula (II) is represented by(R'--COO.sup.Type: GrantFiled: February 3, 1988Date of Patent: April 11, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshio Koshimizu, Keiji Mihayashi
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Patent number: 4818673Abstract: A method for processing a silver halide color photographic material is disclosed, which comprises processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer comprising silver chloride or silver chlorobromide containing at least 80 mol % of silver chloride with a color developing solution and thereafter processing the material with a bleach-fixing solution, wherein the bleach-fixing solution contains a ferric complex salt of an organic acid and from about 1.times.10.sup.-2 to about 2 mol of bromide ions and/or from about 5.times.10.sup.-4 to about 5.times.10.sup.-2 mol of iodide ions per liter.The method for processing a silver halide color photographic material according to the present invention is excellent in desilvering ability, and enables rapid processing to be conducted.Type: GrantFiled: August 5, 1987Date of Patent: April 4, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Kazunori Hasebe, Junya Nakajima
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Patent number: 4814260Abstract: A method of storing a liquid color developer and a liquid bleach-fixer in a container made of plastic material having an oxygen permeation coefficient of 0 to 50 m/(m.sup.2 atm day) at temperatures of 20.degree. C. and relative humidity of 60%. The developer contains an aromatic primary amine color developing agent; a hydroxylamine of the formula ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen or alkyl having 1 to 3 carbon atoms, provided that at least one of R.sup.1 and R.sup.2 is an unsubstituted alkyl group having 1 to 3 carbon atoms and that R.sup.1 and R.sup.2 may be combined with each other to form a ring; and an alkaline ingredient for adjusting the pH of the developer to not less than 9.5. The bleach-fixer contains a ferric aminopolycarboxylate, 0 to 1.times.10.sup.-3 mols per liter of an aminopolycarboxylic acid based on the total bleach-fixer, a thiosulfate, and 1.times.10.sup.-3 to 2.times.10.sup.-1 mol per liter of said liquid bleach-fixer of a sulfite.Type: GrantFiled: June 16, 1987Date of Patent: March 21, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shigeharu Koboshi, Kazuyoshi Miyaoka, Masahiko Kon
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Method for processing silver halide photographic material with an alkaline black and white developer
Patent number: 4810622Abstract: A method of processing a silver halide photographic material is described, comprising developing an exposed silver halide photographic material with an alkaline black-and-white developer having a pH value of 9.2 to 10 comprising:(1) at least one of hydroquinones, (2) at least one of 3-pyrazolidone-based developing agents, (3) at least one of dialdehyde-based hardening agents, (4) at least one antifoggant selected from the group consisting essentially of indazole-, benzimidazole-, benztriazole- and mercaptothiadiazole-based antifoggants, (5) at least one compound selected from the group consisting essentially of diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, 1,3-diamino-2-propanoltetraacetic acid, ethylenediaminetetramethylenephosphonic acid, aminotrimethylenephosphonic acid and alkali metal salts thereof, (6) at least one of silver halide solvents, and (7) at least one compound selected from the group consisting essentially of sulfite, bisulfite, and metabisulfite.Type: GrantFiled: July 2, 1987Date of Patent: March 7, 1989Assignee: Fuji Photo Film, Co. Ltd.Inventors: Minoru Yamada, Takashi Toyoda -
Patent number: 4804616Abstract: The present invention relates to a method for continuously processing a color reversal photographic material. After black and white development, the color reversal photographic material is rinsed in a bath wherein the replenishing amount per unit area of the photographic material is 3 to 50 times as much as the amount of processing solution carried over from the preceding bath in terms of volume ratio and the pH is 9.5 or below.Type: GrantFiled: November 19, 1987Date of Patent: February 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Junya Nakajima
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Patent number: 4804618Abstract: A method for treating a silver halide color photographic material comprising color developing an exposed silver halide color photographic material and treating it with a treating solution having bleaching power containing at least one ferric complex salt of an organic chelating compound represented by the formula (X-1): ##STR1## wherein W.degree. represents an alkylene group containing a thioether bond; Y.sup.1, Y.sup.2, Y.sup.3 and Y.sup.4 each independently represents a methylene group or an ethylene group; and Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4 each independently represents a carboxyl group, a phosphono group, a sulfo group, or a hydroxyl group.Type: GrantFiled: October 15, 1987Date of Patent: February 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Kiyoshi Morimoto
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Patent number: 4797351Abstract: A replenishing process for use in the development of an image-wise exposed silver halide color photographic light-sensitive material in which a color developer replenisher containing 0-3.0.times.10.sup.-3 mole of bromide is added to a color developer in a volume of between 0.5 and 9 ml per 100 cm.sup.2 of silver halide color photographic light-sensitive material.Type: GrantFiled: April 25, 1986Date of Patent: January 10, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Ishikawa, Shigeharu Koboshi, Kazuyoshi Miyaoka, Satoru Kuse
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Patent number: 4791048Abstract: A color image is formed by subjecting a silver halide photosensitive material comprising at least a photosensitive silver halide, a two equivalent coupler, a binder, and a substantially water-insoluble basic metal compound on a support, to development with a processing solution comprising a complexing compound capable of complexing reaction with the metal in ionic form of said substantially water-insoluble basic metal compound in the presence of water to release a base.Type: GrantFiled: February 19, 1987Date of Patent: December 13, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Yoshiharu Yabuki, Haruhiko Iwano
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Patent number: 4774169Abstract: A processing solution for developing a silver halide color photographic material. The material has a color developing agent and at least one compound selected from the group consisting of an aminocarboxylic acid and an aminophosphonic acid. The processing development solution has a surface tension ranging from 20 to 60 dynes/cm.Type: GrantFiled: August 4, 1986Date of Patent: September 27, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Satoru Kuse, Shigeharu Koboshi, Masahiko Kon
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Patent number: 4756996Abstract: A photographic processing composition which comprises an aqueous alkaline solution, a silver halide developing agent and a substantially water-insoluble, cationic polyoxyethylene amine containing 2 or 3 mols of ethylene oxide.Type: GrantFiled: November 3, 1986Date of Patent: July 12, 1988Assignee: Polaroid CorporationInventor: Frank E. Debruyn, Jr.
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Patent number: 4740363Abstract: Alkali is generated from two neutral parts by reacting a complexing agent such as sodium picolinate in one part with a slightly water-soluble metal compound such as zinc oxide in the other part in the presence of water.Type: GrantFiled: July 30, 1986Date of Patent: April 26, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Yoshiharu Yabuki, Kozo Sato
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Patent number: 4672025Abstract: A silver halide photographic material is developed with an alkaline black-and-white developer comprising (1) hydroquinone, (2) a 3-pyrazolidone-type developing agent, (3) a dialdehyde-type hardener, (4) at least one antifoggant selected from the group consisting of indazole-type antifoggants, benzimidazole-type antifoggants and benzotriazole-type antifoggants, and (5) at least one chelating agent selected from the group consisting of diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, 1,3-diamino-2-propanoltetraacetic acid, glycol ether diaminetetraacetic acid, ethylenediaminetetramethylenephosphonic acid, aminotrimethylenephosphonic acid and alkali metal salts of said acids.Type: GrantFiled: July 30, 1985Date of Patent: June 9, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Yamada, Takashi Toyoda
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Patent number: 4615971Abstract: Developer compositions which contain a hydrolyzed polymaleic acid anhydride having improved protection against precipitation of calcium compounds.Type: GrantFiled: September 10, 1985Date of Patent: October 7, 1986Assignee: Agfa-Gevaert AktiengesellschaftInventor: Helmut Haseler
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Patent number: 4596765Abstract: A photographic color forming agent composition comprising an aromatic primary amine color developing agent and materials (A), (B), and (C). Material A is a compound having an aromatic ring bearing two hydroxy groups in the ortho positions thereof. Material B is a hydroxyalkylidene-diphosphonic acid metal ion chelating agent. Material C is at least one metal salt selected from the group consisting of the water-soluble metal salts of magnesium, bismuth, aluminum, zinc, barium, or zirconium. The metal salt is present in an amount in mols equivalent to or more than the amount in mols of metal ion chelating agents of B.Type: GrantFiled: December 4, 1984Date of Patent: June 24, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masayuki Kurematsu, Shigeharu Koboshi
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Patent number: 4588677Abstract: A method for processing a silver halide color photosensitive material which comprises processing a silver halide color photosensitive material containing at least one 4-mercapto-5-pyrazolone type magenta coupler represented by formula (I) ##STR1## wherein W represents an aryl group; X represents an alkyl group, an aryl group or a heterocyclic ring group; and Y represents an acylamino group, a ureido group, or an anilino group; with a color developer containing at least one compound selected from a compound represented by formula (II) ##STR2## wherein R represents a lower alkyl group, and M.sub.1 and M.sub.2, which can be the same or different, each represents a hydrogen atom, and an alkali metal atom, or an ammonium group; a compound represented by formula (III) ##STR3## wherein M.sub.3, M.sub.4, M.sub.5, M.sub.6 and M.sub.Type: GrantFiled: December 28, 1984Date of Patent: May 13, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Junya Nakajima
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Patent number: 4559291Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a ligand having a coordinating site which is: ##STR1## In a preferred embodiment, the ligand is an alpha amino carboxylic acid, a 2-pyridinecarboxylic acid, a 2-aminoalcohol, a 2-hydroxymethylpyridine, a 2-hydroxyacetic acid, a 1,2-diamine or a 2-hydroxypyridine-N-oxide.Type: GrantFiled: December 28, 1984Date of Patent: December 17, 1985Assignee: Eastman Kodak CompanyInventors: Stephen M. Neumann, Glenn T. Pearce, Theophilus Sorrell
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Patent number: 4551411Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a sequestering agent which is gluconic acid, N[CH.sub.2 --P--(O)(OH).sub.2 ].sub.3 or (HO).sub.2 P(O)--C(CH.sub.3)(OH)--P(O)(OH).sub.2.Type: GrantFiled: December 28, 1984Date of Patent: November 5, 1985Assignee: Eastman Kodak CompanyInventors: David P. Brust, Stephen M. Neumann, Edward Weissberger