Bleaching Patents (Class 430/430)
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Patent number: 4948711Abstract: A method for continuously processing silver halide color photographic light-sensitive materials comprises the steps of developing an exposed silver halide color photogrpahic light-sensitive material which comprises at least one emulsion layer formed from a silver halide emulsion containing not less than one mole % of silver iodide, then desilvering the developed light-sensitive material with a solution having a fixing ability, washing and/or stabilizing the desilvered light-sensitive material, the processing solution having fixing ability comprising at least one member selected from the group consisting of polymer dispersions containing polymer such as polymer (1) and water-soluble polymers such as polymer (30).Type: GrantFiled: February 27, 1989Date of Patent: August 14, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetsuro Kojima, Yoshihiro Fujita, Junichi Yamanouchi, Tomokazu Yasuda
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Patent number: 4945031Abstract: An image-forming process, which comprises subjecting a multilayer silver halide color photographic material containing, in an oil droplet dispersion in a light-sensitive layer provided on a support, at least one of the diffusion-resistant oil-soluble couplers capable of coupling with an oxidation product of an aromatic primary amine developing agent to form a substantially non-diffusible cyan dye represented by the following formula (I) and at least one member selected from the compounds represented by the following formulae (II) and (III), to imagewise exposure and color development, and then processing the multilayer silver halide photographic material with a bleaching or bleach-fixing solution having a pH of 6.3 or less: ##STR1## wherein: Y represents --NHCO-- or --CONH--;R.sub.1 represents an aliphatic group, an aromatic group, a heterocyclic group or an amino group;X represents a hydrogen atom, a halogen atom, an aliphatic group, an alkoxy group or an acylamino group;R.sub.Type: GrantFiled: June 20, 1988Date of Patent: July 31, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Sakai, Osamu Takahashi, Kozo Aoki
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Patent number: 4939074Abstract: 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: GrantFiled: April 26, 1988Date of Patent: July 3, 1990Assignee: Fuji Photo Film Co., Ltd.Inventor: Takatoshi Ishikawa
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Patent number: 4939075Abstract: In the case of color materials with the usual processing times, bleaching and bleaching/fixing baths containing an iron(III) ion complex salt as bleach and, in addition, a 5- to 7-membered heterocyclic compound containing at least one N-atom and at least one other hetero atom from the group consisting of O,S,N which is substituted by --S.sup..crclbar. and, at a quaternary ring nitrogen atom, carries a positive charge arranged in such a way that no tautomeric charge compensation to a neutral thione form is possible, provide for good bleaching, i.e. for black areas free from residual silver in the case of color negative materials and for low minimum densities in the case of color reversal materials, by virtue of their excellent bleaching rate and, at the same time, their high stability.Type: GrantFiled: December 9, 1988Date of Patent: July 3, 1990Assignee: Agfa-Gevaert AktiengesellschaftInventors: Peter Bergthaller, Helmut Haseler, Heinz Meckl
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Patent number: 4933266Abstract: Bleaching and bleach-fixing solutions, especially useful in the processing of a photographic color material, contain a bleaching agent comprising a ferric complex of propylenediaminetetraacetic acid and a hydroxy-substituted chelating agent present in an amount sufficient to reduce the formation of ferric propylenediaminetetraacetic acid precipitates. The solutions do not generate unacceptable stain or adversely affect leuco cyan dye recovery or process cleanliness.Type: GrantFiled: March 1, 1988Date of Patent: June 12, 1990Assignee: Eastman Kodak CompanyInventors: Keith H. Stephen, Carol J. MacDonald
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Patent number: 4923785Abstract: The one-part aqueous bleaching bath concentrate containing an ammonium iron (III) complex salt concentration of at least 0.4 mol per liter, an ammonium bromide concentration of from 1.5 to 3 mol per liter, an ammonium nitrate concentration of from 0.25 to 1 mol per liter and a pH below 3 is stable in storage.Type: GrantFiled: July 5, 1988Date of Patent: May 8, 1990Assignee: AGFA Gevaert AGInventor: Karl Frank
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Patent number: 4923784Abstract: Silver halide photographic elements are described containing, as a bleach accelerator precursor, a silver salt of an acid-containing, non-zwitterionic, organic thiol. The bleach accelerators are operable with a multiplicity of bleach compositions and help in reducing sensitizing dye stain.Type: GrantFiled: November 14, 1988Date of Patent: May 8, 1990Assignee: Eastman Kodak CompanyInventors: John W. Harder, Stephen P. Singer
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Patent number: 4921779Abstract: Improved bleach-accelerating compositions that are especially useful in the reversal color processing of photographic elements are comprised of a bleach-accelerating agent and a dye-stabilizing agent. Formaldehyde precursors function as particularly effective dye-stabilizing agents in such compositions. The bleach-accelerating composition is utilized subsequent to the color developing step and prior to the bleaching step and serves to enhance the effectiveness of the bleaching step and to provide improved dye stability.Type: GrantFiled: December 19, 1988Date of Patent: May 1, 1990Assignee: Eastman Kodak CompanyInventors: Ann M. Cullinan, Paul A. Schwartz
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Patent number: 4914009Abstract: The present invention relates to a process for forming a direct positive color image, wherein bleaching time is reduced and color reproduction is not deteriorated. According to the present invention, there is provided a process for forming a direct positive color image comprising exposing a photosensitive material comprising, on a support, at least one photographic emulsion layer containing previously unfogged internal latent image-type silver halide grains and a color image-forming coupler, color-developing the same in the presence of a nucleating agent and/or fogging light, and then processing it with a processing solution having a bleaching effect, characterized in that a bleaching accelerator is incorporated into the processing bath having the bleaching effect or a pre-processing bath, or said bleaching accelerator is incorporated into the photosensitive material.Type: GrantFiled: June 26, 1987Date of Patent: April 3, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Tatsuo Heki, Noriyuki Inoue
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Patent number: 4914008Abstract: There is disclosed a processing method of a light-sensitive silver halide color photographic material comprising, in a method of processing a light-sensitive silver halide color photographic material with a bleach-fixing solution after color developing, and successively with a stabilizing solution substituted for water washing, said bleach-fixing solution contains as main components an organic acid ferric complex salt with which a molecular weight of a free acid being not more than 280, a thiosulfate and a sulfite, and a processing time by said stabilizing solution substituted for water washing is 2 minutes or shorter.Type: GrantFiled: December 8, 1988Date of Patent: April 3, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masayuki Kurematsu, Shigeharu Koboshi
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Patent number: 4910125Abstract: A method of processing an exposed silver halide color photographic material is described, comprising the steps of:(1) color developing the material, and then(2) bleaching or bleach-fixing the material using a processing solution, wherein the processing solution has a bleaching capability and contains at least ferric complex salt of an organic chelating compound represented by formula (X): ##STR1## wherein Y represents ##STR2## l, m and n each represents an integer of from 1 to 3 which may be the same or different; and r represents a hydrogen atom or a substituted or unsubstituted alkyl group having from 1 to 4 carbon atoms.Type: GrantFiled: October 4, 1988Date of Patent: March 20, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Taku Haruuchi, Shinji Ueda
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Patent number: 4908300Abstract: A method of a processing of a silver halide color photographic material is disclosed. The process comprises a step of developing the exposed color photographic material and a step of treating the developed color photographic material with a bleach-fixing solution. The bleach-fixing solution contains an organic acid ferric complex. At least one layer of the emulsion layers of the photographic material contains silver halide grains containing from 0.5 to 25 mol % of silver iodide. The total dry-thickness of the photographic component layers contained in the photographic material is from 8 to 25 .mu.m and the swelling rate T1/2 of the photographic component layers is not more than 25 sec. The method is suitable for rapid processing of the fine grain-type high-speed silver iodide-containing color photographic material. The method uses a bleach-fixing bath enabling the rapid processing of the high-speed color photographic material.Type: GrantFiled: October 14, 1988Date of Patent: March 13, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shigeharu Koboshi, Moeko Higuchi, Shinji Kadota
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Patent number: 4894319Abstract: A color image-forming process is disclosed, which comprises imagewise exposing a silver halide color photographic material comprising a support having thereon at least one light-sensitive layer containing at least one coupler capable of forming a dye upon a reaction with an oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion spectrally sensitized with a dye represented by the following general formula (I), (II) or (II), substantially excluding silver iodide, and containing about 80 mol % or more silver chloride, processing the exposed photographic material with a color developer, then processing it with a solution having a pH of not more than about 6.5 and having a bleaching ability within about 75 seconds: ##STR1## wherein the symbols have the meanings described hereinafter. A silver halide color photographic material to be processed in accordance with the method described above is also disclosed.Type: GrantFiled: November 16, 1988Date of Patent: January 16, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Ikeda, Tadashi Ogawa, Masaki Okazaki
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Patent number: 4894320Abstract: A method of processing an imagewise exposed silver halide color photographic material comprising developing the material with a color developing solution, and then processing the material with a solution having a bleaching ability, wherein the processing solution having a bleaching ability contains a ferric complex salt comprising, as a complexing agent, an aromatic compound having at least one group represented by the following general formula (I): ##STR1## wherein X represents a hydrogen atom or an organic or inorganic cation, A represents a single bond or a divalent linking group, and R represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic ring group, an acyl group, a sulfonyl group, A or --CH.sub.2 PO.sub.3 X.sub.2.Type: GrantFiled: September 25, 1987Date of Patent: January 16, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Masakazu Morigaki, Kozo Aoki
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Patent number: 4876180Abstract: A method of processing a silver halide-containing photosenstitive material for color photography includes the silver-removing step in which silver which is formed by reduction in the color developing step is oxidized by a bleaching agent and further changed into a soluble silver complex by the action of a fixing agent. In this process, bleaching is carried out in both a bleaching bath and a bleach-fixing bath, and fixing is effected in the bleach-fixing bath. In the bleach-fixing bath, a stream of bleach-fixing solution is brought into contact with the emulsion coating surface of the color photosensitive material at a higher flow velocity than that of a stream of bleach-fixing solution which is circulated in the bath.Type: GrantFiled: July 12, 1988Date of Patent: October 24, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Junya Nakajima, Haruo Takase, Kazushige Uenaka, Ruyzi Otomo
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Patent number: 4865959Abstract: A silver halide color photographic material having on a support at least one silver halide emulsion layer, wherein the color photographic material contains at least one compound releasing a bleach accelerator upon reaction with the oxidation product of an aromatic primary amine color developing agent and at least one cyan dye-forming coupler represented by formula (A); ##STR1## wherein R.sub.1 represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aromatic group; or a substituted or unsubstituted heterocyclic group; X represents a hydrogen atom or a group capable of releasing upon a coupling reaction with the oxidation product of an aromatic primary amine color developing agent; and Ar represents an aromatic group having at least one substituent, wherein the sum of the .sigma..sub.m and .sigma..sub.p values of the substituent is at least 0.67.Type: GrantFiled: June 24, 1988Date of Patent: September 12, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Hidetoshi Kobayashi
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Patent number: 4865956Abstract: Silver halide photographic elements are described containing, as a bleach accelerator precursor, a silver salt of a solubilized, non-primary amino thiol. The bleach accelerators are operable with a multiplicity of bleach compositions and do not deleteriously affect the sensitometric properties of the photographic element.Type: GrantFiled: November 14, 1988Date of Patent: September 12, 1989Assignee: Eastman Kodak CompanyInventors: John W. Harder, Stephen P. Singer
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Patent number: 4857441Abstract: A method of processing a silver halide-containing photosensitive material for color photography includes the silver-removing step in which silver which is formed by reduction in the color developing step is oxidized by a bleaching agent and further changed into a soluble silver complex by the action of a fixing agent. In this process, bleaching is carried out in both a bleaching bath and a bleach-fixing bath, and fixing is effected in the bleach-fixing bath. In the bleach-fixing bath, a stream of bleach-fixing solution is brought into contact with the emulsion coating surface of the color photosensitive material at a higher flow velocity than that of a stream of bleach-fixing solution which is circulated in the bath.Type: GrantFiled: February 9, 1987Date of Patent: August 15, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Junya Nakajima, Haruo Takase, Kazushige Uenaka, Ruyzi Otomo
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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: 4845019Abstract: The methods and apparatus disclosed herein provide commercially viable means to selectively improve the input and output characteristics of photosensitive materials, especially the output contrast variables. The present invention allows commercially available photosensitive material such as the high contrast Ilford Cibachrome Copy CCO Paper.RTM. to display dramatically improved color balance and contrast range characteristics when making reproductions from slides or prints. Recreational, professional and military photo duplication techniques are greatly improved by the present invention.Type: GrantFiled: October 29, 1987Date of Patent: July 4, 1989Assignee: Visicon Laboratories, Inc.Inventor: Quentin D. Vaughan, IV
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Patent number: 4845017Abstract: A method for processing a silver halide color photographic light-sensitive material by subjecting an exposed silver halide color photographic light-sensitive material to color development, then to bleaching and fixing or then to bleach-fixing, which method comprises using a ferric ion complex salt as a bleaching agent in the bleaching or bleach-fixing and incorporating at least one compound represented by general formula (I) described below or a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a hydroxy group, a substituted or unsubstituted amino group, a carboxy group, a sulfo group or a substituted or unsubstituted alkyl group; R.sup.3 and R.sup.4 each represents a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted acyl group or R.sup.3 and R.sup.Type: GrantFiled: July 10, 1985Date of Patent: July 4, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Shigeru Ohno
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Patent number: 4842994Abstract: A silver halide photographic material is described, comprising a support having provided thereon at least one silver halide photographic emulsion layer and comprising a bleach accelerator-releasing coupler, wherein said bleach accelerator-releasing coupler is represented by formula (I)A--(TIME).sub.n --S--X--(Y).sub.m --(Z)l]a (I)wherein A represents a coupler residual group; TIME represents a timing group; n represents 0 or 1; X represents a cyclic aliphatic group or a saturated heterocyclic group; Y represents an aliphatic group having from 1 to 8 carbon atoms which may contain a group of --O--, a group of --S--, a group of --COO--, a group of --CO--, a group of ##STR1## a group of ##STR2## a group of --SO.sub.2 --or a group of ##STR3## in its chain; m represents an integer of from 0 to 3, and when m represents 2 or more, the two or more Y groups may be the same or different; Z represents a group of --OH, a group of --COOM, a group of --SO.sub.Type: GrantFiled: November 12, 1987Date of Patent: June 27, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Seiji Ichijima
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Patent number: 4839262Abstract: Improved bleach-accelerating compositions that are especially useful in the reversal color processing of photographic elements are comprised of a bleach-accelerating agent and an ethyleneoxy-substituted fatty acid ester of sorbitan. The bleach-accelerating composition is utilized subsequent to the color developing step and prior to the bleaching step and serves to enhance the effectiveness of the bleaching step. Incorporation of the ethyleneoxy-substituted fatty acid ester of sorbitan in the bleach-accelerating composition serves to avoid or at least minimize problems of scum formation which commonly occur in such compositions.Type: GrantFiled: March 1, 1988Date of Patent: June 13, 1989Assignee: Eastman Kodak CompanyInventor: Paul A. Schwartz
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Patent number: 4839273Abstract: In a process for development, fixing, and washing or stabilization of a silver halide photographic light-sensitive material by means of an automatic developing machine, is provided, which process comprises supplying to a developing bath and/or a fixing bath a concentrated developing solution and/or a concentrated solution having a fixing capacity, respectively, and water which has been treated by at least one antifungal means selected from the group consisting of irradiation with ultraviolet rays, irradiation with magnetic fields, processing with ion exchange resins, and incorporation of at least one compound selected from the group consisting of aminopolycarboxylic acids and phosphonic acids. In a preferred embodiment, the amount of wash water or stabilizing sollution to be refilled is 3 l or less (including 0 l) per 1 m.sup.2 of light-sensitive material, and the water processed by antifungal means contained in the stock tank is also used as the wash water or stabilizing solution.Type: GrantFiled: October 2, 1987Date of Patent: June 13, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Yamada, Takashi Toyoda, Kunio Seto
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Patent number: 4837122Abstract: This invention provides a method for deleting images formed on offset printing plates which comprises treating the surface of undesired portion of the images formed by exposure and development with a deletion fluid which contains a ferric complex salt of an organic acid and 0.3 mol/liter or more of at least one compound selected from the group consisting of a soluble bromide and a soluble iodide. Preferred ferric complex salt is a ferric complex salt of aminopolycarboxylic acid.Type: GrantFiled: December 2, 1987Date of Patent: June 6, 1989Assignee: Mitsubishi Paper Mills. Ltd.Inventors: Toshiro Kondo, Eiji Kanada, Hiroshi Nishinoiri
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Patent number: 4837140Abstract: A color image-forming process is disclosed, which comprises imagewise exposing a silver halide color photographic material comprising a support having thereon at least one light-sensitive layer containing at least one coupler capable of forming a dye upon a reaction with an oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion spectrally sensitized with a dye represented by the following general formula (I), (II) or (III), substantially excluding silver iodide, and containing about 80 mol % or more silver chloride, processing the exposed photographic material with a color developer, then processing it with a solution having a pH of not more than about 6.5 and having a bleaching ability within about 75 seconds: ##STR1## wherein the symbols have the meanings described hereinafter. A silver halide color photographic material to be processed in accordance with the method described above is also disclosed.Type: GrantFiled: June 8, 1987Date of Patent: June 6, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Ikeda, Tadashi Ogawa
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Patent number: 4830948Abstract: A method of forming color photographic images where a silver halide color photographic material containing a coupler which forms a dye by reaction with the oxidation product of an aromatic primary amine developing agent and containing an acid-processed gelatin in an amount of 25% by weight or more of the amount of the total gelatin coated is color developed, desilvered and then rinsed in water and/or stabilized. The total of the processing time of said desilvering, rinsing-in-water and stabilization steps is controlled to be 3 minutes or less, and/or the amount of replenisher added to the rinsing-in-water bath and stabilization bath is controlled to be from 0.5 to 50 times of the amount of the processing solution which is brought into the rinsing-in-water bath and stabilization bath from the desilvering bath together with the material which is being processed.Type: GrantFiled: March 17, 1988Date of Patent: May 16, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Genichi Furusawa, Takeshi Hirose
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Patent number: 4828970Abstract: 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: GrantFiled: April 15, 1987Date of Patent: May 9, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Satoru Kuse, Shigeharu Koboshi
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Patent number: 4826745Abstract: Method of preparing a hologram which is of the silver halide in gelatin binder type, which method comprises exposing, developing and bleaching the holographic material, where a water-soluble halide and a ferric salt of an acetic acid derivative are used in the bleach bath.Type: GrantFiled: December 15, 1987Date of Patent: May 2, 1989Assignee: Ciba-Geigy AGInventors: Trevor Groves, David W. Butcher
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Patent number: 4822725Abstract: A method for processing a silver halide color photographic material is described which comprises subjecting an imagewise exposed silver halide color photographic material to color development and then bleaching the developed color photographic material with a bleaching solution containing a ferric salt of an aminopolycarboxylic acid, wherein the bleaching solution additionally contains at least one compound represented by the following general formula (I) or (II) ##STR1## wherein R.sub.1 and R.sub.2 are identical or different and each represents a hydrogen atom or a methyl or ethyl group, and n represents an integer of 1 to 3, and wherein the oxidation reduction potential of the bleaching solution is adjusted to not more than 100 mV.Type: GrantFiled: September 22, 1988Date of Patent: April 18, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Shinzo Kishimoto, Yasuhisa Ogawa
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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: 4818664Abstract: A process for processing a silver halide color photographic material which comprises processing, after color development, a silver halide color photographic material with a processing solution having a bleaching faculty using an aminopolycarboxylic acid ferric complex salt as an oxidizing agent, said color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and at least one compound releasing by the reaction with an oxidation product of a developing agent a group releasing or forming development inhibitor by the reaction with another molecule of an oxidation product of a developing agent.Type: GrantFiled: May 20, 1987Date of Patent: April 4, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Keiji Mihayashi, Seiji Ichijima
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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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Patent number: 4812389Abstract: A process for processing a DIR coupler-containing silver halide color photographic material for photographing use in a continuous manner with replenishment of a developer is disclosed in which said DIR coupler is a coupler which has in a coupling site a group that functions as a development inhibitor or a development inhibitor precursor upon being eliminated from the coupling active site by color development processing and that will be decomposed to a compound exerting substantially no influences on photographic properties after flowing into a color developing solution, said development inhibitor having a half-value period of 4 hours or shorter than that at a pH of 10.0, and in which the developing solution is replenished in an amount of 700 ml or less per m.sup.2 of developed light-sensitive materials.Type: GrantFiled: September 25, 1986Date of Patent: March 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Seiji Ichijima, Shinzo Kishimoto
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Patent number: 4804617Abstract: This invention provides a processing method for exposed silver halide color photosensitive materials, which enables sufficient desilverization to be performed in a short time and highly photographic quality to be obtained. The processing method of this invention comprises the steps of: exposing silver halide color photosensitive material containing 5-pyrazolone-type or pyrazoloazole-type 2-equivalent magenta coupler to light; color developing said photosensitive material; and desilverizing said photosensitive material, wherein said desilverizing step uses a bleaching bath containing ferric complex salt aminopolycarboxylate, and thereafter uses a bleaching-and-fixing bath containing ferric complex salt aminopolycarboxylate.Type: GrantFiled: July 10, 1987Date of Patent: February 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihiro Nishikawa, Akira Abe
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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: 4798784Abstract: A method for processing a silver halide color photographic material which comprises, after color development of an exposed silver halide color photographic material containing a hydrolyzable type DIR coupler, rapidly processing the developed silver halide color photographic material with a liquid having a bleaching ability and subsequently with a liquid having a bleach-fixing ability, to thereby form a color image.In accordance with the method for processing a silver halide color photographic material, desilveration is completed in a short period of time and color photographic images having excellent color reproducibility and fastness are obtained.Type: GrantFiled: November 26, 1986Date of Patent: January 17, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Toshihiro Nishikawa, Akira Abe, Junya Nakajima
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Patent number: 4780403Abstract: A silver halide color photographic material comprising a support having thereon at least one photographic emulsion layer containing tabular silver halide grains having an average aspect ratio of 5 or more and the silver halide color photographic material containing at least one compound represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group or an acyl group provided that both R.sub.1 and R.sub.2 do not represent hydrogen atoms at the same time, or R.sub.1 and R.sub.2 form a ring; and r represents an integer of from 1 to 3.The silver halide color photographic material can be bleached in a short period of time using a bleaching agent having a weak bleaching ability which meets requirements of preventing environmental pollution.A method for processing the silver halide color photographic material by subjecting to color development, then to treatment with a bath having a bleaching ability is also disclosed.Type: GrantFiled: December 11, 1986Date of Patent: October 25, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Keiji Mihayashi
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Patent number: 4775612Abstract: A method for processing a silver halide color photographic material is disclosed, wherein a washing bath is replenished with water in an amount of from 2 to 50 times the volume of the preceding bath which is carried over with the photographic material into the washing bath per unit area of the photographic material to be processed, and washing in the washing bath is carried out in the presence of at least one compound represented by formula (I): ##STR1## wherein A represents a n-valent aliphatic, aromatic or heterocyclic linking group, wherein when n is 1, A represents a monovalent aliphatic, aromatic, or heterocyclic group, or a hydrogen atom; X represents --O--, --S--, or ##STR2## R.sup.1 and R.sup.2 each represents substituted or unsubstituted lower alkyl group; R.sup.3 represents a lower alkylene group; R.sup.4 represents a lower alkyl group; or R.sup.1 and R.sup.2, R.sup.1 and A, R.sup.1 and R.sup.3, R.sup.2 and A, or R.sup.2 and R.sup.Type: GrantFiled: December 8, 1986Date of Patent: October 4, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Jun Arakawa, Yasushi Nozawa
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Patent number: 4769312Abstract: A method of processing silver halide color photographic materials which comprises image-wise exposing said silver halide color photographic materials, color developing and then desilvering them in a bath having bleaching ability, characterized in that the bath having bleaching ability comprises two baths, the oxidation-reduction potential of the first bath being higher than that of the second bath, the oxidation-reduction potential of the second bath falling in the range of +60 mV to -60 mV, the first bath containing a water-soluble bromide in an amount of 0.5 to 1.3 mole/l, and the second bath containing a water-soluble bromide in an amount of 0 to 0.5 mole/l.Type: GrantFiled: October 14, 1986Date of Patent: September 6, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Akira Abe, Junya Nakajima
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Patent number: 4769313Abstract: A method of forming an image comprising, after color developmenmt of an exposed silver halide color photographic material, processing the developed silver halide color photographic material with a bath having a bleaching ability and subsequently with a bath having a bleach-fixing ability, wherein the silver halide color photographic material comprises a support having coated thereon at least one silver halide emulsion layer and at least one pyrazoloazole type magenta coupler represented by the following general formula (A): ##STR1## wherein R.sub.22 represents a hydrogen atom of a substituent; X represents a group capable of being split off upon a coupling reaction with an oxidation product of an aromatic primary amine developing agent; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.Type: GrantFiled: November 21, 1986Date of Patent: September 6, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Fujimoto, Shinzo Kishimoto, Akira Abe, Junya Nakajima
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Patent number: 4764455Abstract: A color image-forming process is described, for a silver halide color photographic material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, which process comprises incorporating in the photographic material a yellow dye represented by formula (I) and processing the photographic material using a bleach-fixing solution containing a ferric complex of aminopolycarboxylic acid and a thiosulfate ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a carboxy group, a substituted amino group, a carbamoyl group, a sulfamoyl group, a nitro group or an alkoxycarbonyl group;R.sub.3 and R.sub.Type: GrantFiled: August 6, 1986Date of Patent: August 16, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Jun Arakawa, Masahiro Okada, Takatoshi Ishikawa
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Patent number: 4762774Abstract: A method for color image formation is disclosed, comprising imagewise exposing to light a silver halide color photographic material having a silver halide emulsion layer containing monodispersed silver halide grains, subjecting the exposed material to color development, and processing the material with a bath primarily having bleaching capacity and then with a bath having bleach-fixing capacity. The method realizes acceleration of desilvering to reduce the processing time.Type: GrantFiled: October 17, 1986Date of Patent: August 9, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Toshihiro Nishikawa, Akira Abe, Junya Nakajima
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Patent number: 4756918Abstract: The present invention, relates to a method for the bleaching-fixation processing of silver halide color photographic materials. The present invention provides for sufficient desilvering in a short period of time without deterioration of the photographic characteristic of the materials as processed while minimizing the amount of replenisher which is used. Accordingly, the present invention is a method for the processing of silver halide color photographic materials wherein, after the color-development, the material is processed by bleaching-fixation with at least two continuous bleaching-fixation baths to which a replenisher is fed in a countercurrent system, wherein the total bleaching-fixation processing time in the bleaching-fixation step is to be 0.37 minutes or more per g/m.sup.2 of the silver amount coated on the material and wherein the processing time in the first bleaching-fixation bath is to be 45% or less of the total bleaching-fixation processing time.Type: GrantFiled: October 17, 1986Date of Patent: July 12, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinji Ueda, Akira Abe, Junya Nakajima
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Patent number: 4745048Abstract: A quick desilvering process of silver halide color photographic materials is provided, wherein the total amount of coated silver is 5.2 g/m.sup.2 or less, an average iodide content in the whole light-sensitive silver halide grains is 5.5 mol % or less; and a 2-equivalent magenta polymer coupler is included as a magenta coupler, and bleach-fixing treatment, or bleaching treatment at a pH of 5.5 or less, or desilvering treatment in the presence of a specific desilvering accelerator is carried out. Silver halide color photographic materials which permit the quick desilvering are also provided. These contain a specific desilvering accelerator.Type: GrantFiled: June 5, 1986Date of Patent: May 17, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Kei Sakanoue, Noboru Sasaki
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Patent number: 4737450Abstract: A method for the processing of photographic elements includes a bleach-fixing step utilizing a bleach-fixing composition comprising an aqueous alkaline solution of a peroxy compound and an ammonium or amine salt of a weak acid.Type: GrantFiled: February 6, 1987Date of Patent: April 12, 1988Assignee: Eastman Kodak CompanyInventors: Jeffrey L. Hall, Jacob J. Hastreiter, Jr.
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Patent number: 4717647Abstract: A method for the processing of a silver halide color photographic element comprising imagewise exposing the element, color developing the exposed element, followed by de-silvering, characterized in that the de-silvering step comprises processing the developed element in a bleaching bath containing an aminopolycarboxylic acid ferric ion complex salt and subsequently in a blixing bath containing an aminopolycarboxylic acid ferric ion complex salt and a fixing agent.Type: GrantFiled: September 13, 1985Date of Patent: January 5, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Junya Nakajima
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Patent number: 4707434Abstract: Disclosed is a color forming method which comprises subjecting a light-sensitive silver halide color photographic material having a photographic constituent layer comprising blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers on a support and having a total thickness of the photographic constituent layer of 25 .mu.m or less to imagewise exposure, then carrying out color developing processing of the exposed material in the presence of a dye forming coupler and processing the developed image with a bleach-fixing solution.The color forming method of the present invention enables rapid processing of a high sensitivity color light-sensitive material.Type: GrantFiled: August 14, 1985Date of Patent: November 17, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shigeharu Koboshi, Moeko Higuchi
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Patent number: 4702998Abstract: There are disclosed a processing solution having bleaching ability for use in light-sensitive silver halide photographic material, which comprises at least one selected from metal complexes of large cyclic polyamine derivatives and a method for processing of light-sensitive silver halide photographic material, which comprises carrying out development processing of an exposed light-sensitive silver halide photographic material and then processing the developed material with the processing solution.The processing solution of the present invention has potent bleaching power, and can afford excellent photographic image characteristics by processing therewith.Type: GrantFiled: March 24, 1986Date of Patent: October 27, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: M. Tanaka, Kazuhiro Kobayashi, Shigeharu Koboshi
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Patent number: 4695529Abstract: An image-forming process is disclosed, which comprises exposing a silver halide color photographic material comprising a support having provided thereon at least one silver halide emulsion layer containing tabular silver halide grains having a diameter-to-thickness ratio of 5 or more, subjecting the exposed photographic material to color development processing, then processing the photographic material in a bath mainly having a bleaching ability and successively in a bath having a bleach-fixing ability.Type: GrantFiled: October 15, 1986Date of Patent: September 22, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Abe, Junya Nakajima, Toshihiro Nishikawa