Antisludgant Patents (Class 430/488)
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Patent number: 6927021Abstract: A photographic developer composition for use in the development of a black and white silver halide photographic element said composition comprises at least one developing agent and, in an amount sufficient to inhibit sludge deposition, one or more compounds selected from compounds having the formula X—R1—CONH-A-S—S—B—NHCO—R2—Y??(I) wherein A and B are each independently a substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic group; R1 and R2 are each independently a substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic group; X and Y are each independently a solubilizing group; and compounds having the formula X—R1—CONH-A-S-M??(II) wherein A, R1 and X are as defined above, and M is either a hydrogen atom or a cationic species if the sulfur atom is in its ionized form.Type: GrantFiled: April 28, 2004Date of Patent: August 9, 2005Assignee: Eastman Kodak CompanyInventors: Paul M. Magee, Brian J. Parker, Nicholas A. Pightling
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Publication number: 20040197716Abstract: A photographic developer composition for use in the development of a black and white silver halide photographic element said composition comprises at least one developing agent and, in an amount sufficient to inhibit sludge deposition, one or more compounds selected from compounds having the formulaType: ApplicationFiled: April 28, 2004Publication date: October 7, 2004Inventors: Paul M. Magee, Brian J. Parker, Nicholas A. Pightling
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Patent number: 6764814Abstract: A photographic developer composition for use in the development of a black and white silver halide photographic element said composition comprises at least one developing agent and, in an amount sufficient to inhibit sludge deposition, one or more compounds selected from compounds having the formula X—R1—CONH—A—S—S—B—NHCO—R2—Y (I) wherein A and B are each independently a substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic group; R1 and R2 are each independently a substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic group; X and Y are each independently a solubilising group; and compounds having the formula X—R1—CONH—A—S—M (II) wherein A, R1 and X are as defined above, and M is either a hydrogen atom or a cationic species if the sulfur atom is in its ionized form.Type: GrantFiled: January 18, 2002Date of Patent: July 20, 2004Assignee: Eastman Kodak CompanyInventors: Paul M. Magee, Brian J. Parker, Nicholas A. Pightling
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Patent number: 6740479Abstract: A silver halide photographic processing solution comprising at least one polymeric compound inhibiting sludge formation and preventing “pi-line” artefact, more particularly in radiographic non-destructive testing applications, wherein said polymeric compound comprises at least one monomer unit having a silver complexing moiety and at least one monomer unit having a solubilizing group, and wherein both said silver ion complexing moiety and said solubilizing group are comprised in same or different monomer units.Type: GrantFiled: July 11, 2003Date of Patent: May 25, 2004Assignee: Agfa-GevaertInventors: Johan Loccufier, Frank Louwet, André Roefs
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Patent number: 6653060Abstract: A method for processing a silver halide light-sensitive material employing an automatic processing machine is disclosed. A developer comprises compounds represented by the formula (1), and a fixer comprises thiosulfate salts, water-soluble aluminum salts, and at least one type of crystallization retarding agents and substantially comprises no boron compound. wherein Q represents —CH2CH2— or —CH2CH(J)—, wherein J represents a hydrogen atom or an alkyl group. x+y+Z is between 2.8 and 3.2, and R represents the group described below. Staining of the water washing tank and processing unevenness caused by a decrease in the replenishment rate of a fixer, are minimized during photographic processing employing an automatic processing machine.Type: GrantFiled: December 6, 2000Date of Patent: November 25, 2003Assignee: Konica CorporationInventor: Shoji Nishio
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Publication number: 20020155396Abstract: A photographic developer composition for use in the development of a black and white silver halide photographic element said composition comprises at least one developing agent and, in an amount sufficient to inhibit sludge deposition, one or more compounds selected from compounds having the formulaType: ApplicationFiled: January 18, 2002Publication date: October 24, 2002Applicant: Eastman Kodak CompanyInventors: Paul M. Magee, Brian J. Parker, Nicholas A. Pightling
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Patent number: 6432625Abstract: A method has been described for processing an exposed black-and-white silver halide photographic film material comprising in a hydrophilic light-sensitive layer thereof a binder and silver halide grains being {111} or {100} tabular silver bromo(chloro)iodide or silver chloro(bromo)iodide grains having an average aspect ratio of from 1.2 to 50 and having a silver iodide content of less than 3 mole % based on silver with at least part of it at their grain surface, said method comprising the steps of developing in a developer, fixing in a fixer, rinsing and drying, characterized in that in said developing step the developer comprises an alkali soluble agent having preventing silver dissolution properties, being a mercapto azole compound as presented herein.Type: GrantFiled: November 9, 2000Date of Patent: August 13, 2002Assignee: Agfa-GevaertInventors: Ann Verbeeck, Govert Wim De Baecke, Johan August Loccufier, Kathy Gaby Elst, André Cornelius Roefs, Freddy Hendrickx
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Patent number: 6340560Abstract: An aminopolycarboxylic acid compound represented by the following formula or analogous thereof: The aminopolycarboxylic acid compound of the present invention can be used as a chelating agent for various metals, which is excellent in the biodegradability and masking effect on metals.Type: GrantFiled: October 7, 1998Date of Patent: January 22, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Inaba, Kiyoshi Morimoto, Shigeo Hirano
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Patent number: 6238854Abstract: A black-and-white silver halide developer composition has been disclosed comprising, besides one or more developing agent(s), agent(s) preventing oxidation thereof and agent(s) providing pH buffering, at least one silver complexing agent, characterized in that said silver complexing agent has a silver complexing stability ratio of at least 70% and, besides said silver complexing agent, at least one agent preventing silver dissolution characterized in that said agent preventing silver dissolution, if present in an amount of 50 mg/l of developer, makes silver content of the developer decrease in an amount of more than 50% versus in the absence thereof, without loss in speed in an amount of more than 0.10 log Exposure after processing in said developer composition.Type: GrantFiled: June 6, 2000Date of Patent: May 29, 2001Assignee: Agfa-GevaertInventors: Benny Jansen, Govert De Baecke, Frank Michiels, Johan Loccufier, Ton Rutges
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Patent number: 6200739Abstract: A processing method comprising the steps of: imagewise exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer; and developing the exposed photographic material, wherein said development is carried out in the presence of a compound represented by formula (I): wherein D and E each represents a —CH═ group, a —C(R0)═ group or a nitrogen atom wherein R0 represents a substituent; and R1, R2 and R3, which may be the same or different, each represents a hydrogen atom, a halogen atom or a substituent bonded to the ring by any of a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorus atom, provided that at least one of R1, R2, R3 and R0 has an —SM group (wherein M represents an alkali metal atom, a hydrogen atom or an ammonium group), and when only one of E and D represents a nitrogen atom, E represents a nitrogen atom, D represents a —CH═ group or a &mdasType: GrantFiled: December 24, 1997Date of Patent: March 13, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuki Yamazaki
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Patent number: 6096489Abstract: A photographic color developing composition includes a color developing agent and at least 0.005 g/l of an anti-tar agent. Such anti-tar agents include a fluoroalkylpolyethyleneoxy alcohol, polyvinyl alcohol, a polyethylene glycol, a free acid of an organic phosphate ester or a salt thereof, or a polyethyleneoxide(20) sorbitan monooleate Inclusion of these agents has been found to significant reduce or elimination tar formation during the processing of color photographic materials, especially color motion picture films.Type: GrantFiled: December 31, 1998Date of Patent: August 1, 2000Assignee: Eastman Kodak CompanyInventors: Hugh G. McGuckin, John S. Badger, Frank A. Pettrone
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Patent number: 6096488Abstract: Processing a silver halide color photographic material comprising color developing, desilvering and water washing and/or stabilizing. In this process, a photographic material which has at least one emulsion layer containing a high silver chloride content, and at least one emulsion layer containing a monodisperse emulsion, is continuously processed with a color developing solution containing a water-soluble high polymer compound. The coated amount of silver in the photographic material is preferably 0.75 g/m.sup.2 or less. The color developing solution preferably has a chloride ion content of 0.035 mol/l or more. The water soluble high polymer compound can be a polyester, polyamide, polyurethane, polyether, polycarbonate or a natural high polymer compound, or their derivatives. It is obtained by polymerizing or copolymerizing a monomer containing a copolymerizable ethylene type unsaturated group. The high polymer compound is preferably added in the amount of 0.Type: GrantFiled: May 5, 1999Date of Patent: August 1, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Kazuaki Yoshida, Hiroshi Fujimoto, Junichi Yamanouchi, Tomokazu Yasuda
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Patent number: 6063540Abstract: Provided is a method for making a lithographic printing plate in which the development is carryied out by coating a developer on a photosensitive element comprising a support and at least a silver halide emulsion layer and a physical development nuclei layer, characterized in that coating amount of the developer is 60 ml or less for 1 m.sup.2 of the photosensitive element, and the developer contains at least one thioether compound and at least one alkanolamine compound as silver halide solvents. The resulting lithographic printing plate is high in printing endurance and has no stains in non-image portions. Furthermore, the running development processing can be stably carried out.Type: GrantFiled: April 6, 1998Date of Patent: May 16, 2000Inventors: Hiroyuki Kurokawa, Toshiro Kondo
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Patent number: 6048675Abstract: A development processing method comprising a step of developing a silver halide photographic material having at least one silver halide emulsion layer with a developing solution containing a hydroquinone developing agent, wherein said developing solution has a pH of from 9.0 to 11.0, and contains a compound represented by formula (I) and a compound represented by formula (II) in a concentration ratio of the compound represented by formula (II)/the hydroquinone developing agent of from 0.03 to 0.12: ##STR1## wherein the symbols in these formulae are defined in the specification.Type: GrantFiled: November 26, 1997Date of Patent: April 11, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Mitsunori Hirano, Kohzaburoh Yamada
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Patent number: 6030757Abstract: A black-and-white silver halide photographic material is disclosed, said material comprising a support and on both sides thereof two light-sensitive emulsion layers and a protective antistress layer as an outermost layer, wherein per side of the support a total amount of silver, expressed as equivalent amount of silver nitrate of at least 5 g is coated, wherein the light-sensitive emulsion layer more close to the said outermost layer is provided with at least one spectrally sensitized silver halide emulsion having tabular emulsion crystals with {111} or {100} major faces, and wherein the emulsion layer more close to the said support is provided with at least one non-spectrally sensitized emulsion having essentially cubic silver halide emulsion crystals, characterized in that the said cubic emulsion crystals or the said tabular emulsion crystals or both have a halide composition including bromide.Type: GrantFiled: July 2, 1998Date of Patent: February 29, 2000Assignee: AGFA-Gevaert, N.V.Inventors: Luc Heremans, Ann Verbeeck
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Patent number: 6013423Abstract: A developing solution for silver halide photographic material contains a six-membered heterocyclic compound having two nitrogen atoms as the constituent atoms of the six-membered ring and mercapto group, hydroxyl group and at least one substituent group other than hydrogen atom and a five-membered heterocyclic compound having two to three nitrogen atoms as the constituent atoms of the five-membered ring and at least one mercapto group. There is also disclosed a method for processing a silver halide photographic material with said developing solution.Type: GrantFiled: February 7, 1994Date of Patent: January 11, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Mitsunori Hirano, Kiyoshi Morimoto, Tetsuo Yoshida, Kunio Ishigaki
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Patent number: 6001544Abstract: Disclosed is a method for forming a color image which comprises color development processing a silver halide color photographic material with an alkaline processing solution substantially free of a color-forming developing agent by using a coating apparatus comprising a plurality of nozzle pores for coating by jetting droplets of the processing solution, wherein three droplets in contiguous to each other jetted from the nozzle pores are coated so as not to leave space among the three droplets coated on said photographic material, wherein said photographic material comprises a support having provided thereon at least one photographic constituting layer, said at least one photographic constituting layer containing at least one dye-forming coupler and at least one color-forming reducing agent selected from the group consisting of color-forming reducing agents represented by formulas (I), (II) and (III) defined in the specification.Type: GrantFiled: September 29, 1998Date of Patent: December 14, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Makuta, Kazuo Sanada, Tsutomu Takatsuka
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Patent number: 5994040Abstract: A processing composition for silver halide photographic light-sensitive material, which comprises at least one compound represented by the following formula (A), (A-I) or (A-II) and at least one compound represented by the following formula (B): ##STR1## Also disclosed are a developer prepared from the processing composition, and a processing method using the developer.Type: GrantFiled: March 4, 1997Date of Patent: November 30, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinnichi Morishima, Kohzaburoh Yamada, Seiji Yamashita, Minoru Sakai, Kouta Fukui, Eiichi Okutsu
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Patent number: 5976758Abstract: A development processing method which comprises the steps of: imagewise exposing a silver halide photographic light-sensitive material; and developing the exposed photographic material with a developing solution, wherein the silver halide photographic material comprises a support having thereon at least one light-sensitive silver halide emulsion layer, at least one of the silver halide emulsion layer and other hydrophilic colloidal layers containing at least one hydrazine derivative; and wherein the developing solution is substantially free from a dihydroxybenzene compound, has a pH of from 9.0 to 10.5 and contains (1) at least one ascorbic acid developing agent, (2) at least one 1-phenyl-3-pyrazolidone auxiliary developing agent and (3) a compound represented by the following formula (I): ##STR1## wherein R.sub.1 to R.sub.Type: GrantFiled: December 19, 1997Date of Patent: November 2, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouta Fukui, Senzo Sasaoka, Kohzaburoh Yamada
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Patent number: 5972580Abstract: A development processing method comprises: exposing a silver halide light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer; and developing said exposed light-sensitive material with a developing solution, wherein at least one of said silver halide emulsion layer and other hydrophilic colloidal layers contains at least one hydrazine derivative, and wherein said developing solution is substantially free from a dihydroxybenzene compound, has a pH of from 9.0 to 10.5, and contains (1) at least one ascorbic acid derivative developing agent, (2) at least one aminophenol auxiliary developing agent and (3) a specific mercaptopyrimidine compound. The processing method provides a high-contrast image required in the field of graphic arts using a developing solution having no problem with respect to the ecosystem and working environment, without causing silver stain even at a low replenishment rate.Type: GrantFiled: November 21, 1997Date of Patent: October 26, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouta Fukui, Kohzaburoh Yamada
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Patent number: 5962202Abstract: A method for processing a black-and-white silver halide photographic light-sensitive material. The method comprises the steps of (1) developing the black-and-white photographic light-sensitive material containing a quaternary onium compound with a developer containing ascorbic acid or a derivative thereof and having a pH value of from 8.0 to 10.0, (2) fixing the light-sensitive material, (3) washing the light-sensitive material by an automatic processor having a multi-step counter flow washing system, and (4) drying the light-sensitive material.Type: GrantFiled: December 1, 1997Date of Patent: October 5, 1999Assignee: Konica CorporationInventor: Takeshi Sampei
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Patent number: 5948603Abstract: Disclosed is a method of processing an exposed black and white photographic light-sensitive material employing an automatic processor, the method comprising the steps of developing the exposed material with a developer, the developer is replenished with a developer replenisher; fixing the developed material with a fixer; washing the fixed material; and drying the washed material, wherein the developer contains a developing agent, a compound represented by the following formula (III) and at least one of a compound represented by the following formula (I) and a compound represented by the following formula (II): ##STR1##Type: GrantFiled: November 20, 1997Date of Patent: September 7, 1999Assignee: Konica CorporationInventors: Shinji Uchihiro, Shoji Nishio
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Patent number: 5928846Abstract: A method for processing a silver halide photographic light-sensitive material is disclosed. The processing method comprises the step of (1) developing a silver halide photographic light-sensitive material which comprises a support having thereon a silver halide emulsion layer and a hydrophilic colloid layer adjoining with the silver halide emulsion layer, and at least one of the silver halide emulsion layer and the hydrophilic colloid layer contains a phosphazene compound and a compound represented by the following Formula 1 or 2 by a developing solution and (2) fixing the silver halide photographic light-sensitive material by a fixing solution, ##STR1## wherein R.sub.1 and R.sub.2 are each independently a hydroxyl group, a mercapto group, an amino group, an acylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, an alkoxycarbonyl group or an alkylthio group, and Z is a group of atoms necessary to form a 5- or 6-member ring, ##STR2## wherein R is an aryl group, R.sub.3, R.sub.4, R.sub.Type: GrantFiled: May 29, 1998Date of Patent: July 27, 1999Assignee: Konica CorporationInventors: Hirobumi Yamashita, Naoko Fukuwatari, Toshiyuki Marui
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Patent number: 5910391Abstract: Disclosed is a process for making a lithographic printing plate, which comprises subjecting a lithographic printing material having physical development nuclei between an aluminum support and a silver halide emulsion layer to exposure and then processing the lithographic printing material at least with a developing solution, a water washing solution and a finishing solution in this order, wherein the processing with the water washing solution is carried out by using a water washing solution containing a compound having a mercapto group or a thione group.Type: GrantFiled: August 6, 1997Date of Patent: June 8, 1999Assignee: Mitsubishi Paper Mills LimitedInventors: Toshiro Kondo, Yutaka Araki, Hajime Fujioka, Makiko Oko
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Patent number: 5882847Abstract: A color light-sensitive material advantageous in that a ratio of .gamma. in a short time processing using a color developer containing a silver halide solvent to .gamma. in a standard time processing using a color developer containing no silver halide solvent is from 0.8 to 1.2 in any case of yellow, magenta and cyan and an image formation method using the same.Type: GrantFiled: March 10, 1997Date of Patent: March 16, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Akimitsu Haijima, Toshihiro Nishikawa
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Patent number: 5853950Abstract: Disclosed is a process for making a lithographic printing plate by subjecting a lithographic printing material having physical development nuclei between an aluminum support and a silver halide emulsion layer to exposure and then processing the lithographic printing material at least with a developing solution and a water washing solution in this order, which comprises performing the processing(s) with the developing solution and/or the water washing solution by using the developing solution and/or the water washing solution containing an organic compound which coagulates gelatin.Type: GrantFiled: September 26, 1997Date of Patent: December 29, 1998Assignee: Mitsubishi Paper Mills LimitedInventors: Toshiro Kondo, Makiko Oko, Yutaka Araki, Hajime Fujioka
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Patent number: 5851723Abstract: Disclosed is a process for making a lithographic printing plate which utilizes the silver complex diffusion transfer process by subjecting the lithographic printing plate to exposure and then development processing and optionally stabilizing processing, which comprises performing the development processing/the stabilizing processing by using a developing solution/a stabilizing solution each containing a monothioether compound containing succinic acid, a salt thereof or a derivative thereof.Type: GrantFiled: August 19, 1997Date of Patent: December 22, 1998Assignee: Mitsubishi Paper Mills LimitedInventor: Toshiro Kondo
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Patent number: 5840472Abstract: A developer for a silver halide photographic photosensitive material containing at least one of monocyclic dimercaptotriazine compounds, bis-type dimercaptotriazine compounds, mercapto-1,2,4-triazine compounds and dimercaptopyrimidine compounds, and a process for developing a silver halide photographic photosensitive material using the developer. The compounds of the present invention provides excellent effect in preventing silver stains without affecting the photographic properties of the photographic material.Type: GrantFiled: February 7, 1997Date of Patent: November 24, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Hirotomo Sasaki, Harumi Watanabe, Kohzaburoh Yamada
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Patent number: 5840471Abstract: A method for processing a silver halide photographic light-sensitive material is disclosed.Type: GrantFiled: September 26, 1997Date of Patent: November 24, 1998Assignee: Konica CorporationInventors: Naoko Fukuwatari, Eiichi Ueda, Yasuo Kurachi
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Patent number: 5830626Abstract: A processing composition includes a combination of two different mercapto-substituted anti-sludging agents. The first compound is a conventional mercapto-substituted compound, and the second compound is a mercapto thiadiazole glycerol propoxylate having the formula I: ##STR1## This processing composition can be used to provide black-and-white development of both color reversal and black-and-white photographic elements, and particularly in high contrast graphic arts films.Type: GrantFiled: August 26, 1997Date of Patent: November 3, 1998Assignee: Eastman Kodak CompanyInventors: Hugh G. McGuckin, John S. Badger, Ronald J. Nothnagle, Jerry L. Willer
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Patent number: 5824458Abstract: A one-part liquid developer for a black and white silver halide photographic material, comprising:i) an ascorbic acid or derivative thereof as a developing agent,ii) an auxiliary developing agent having super-additivity,iii) an alkali agent necessary for giving a pH of about 9, andiv) a compound for enhancing development.Type: GrantFiled: May 19, 1997Date of Patent: October 20, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Eiichi Okutsu, Rikio Inoue
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Patent number: 5821040Abstract: Disclosed is a method for developing a silver halide photographic material, which comprises processing the silver halide photographic material having at least one silver halide emulsion layer containing silver halide grains, with a substantially hydroquinone-free developing solution containing (i) a compound represented by formula (A) as a developing agent, wherein at least 50% of the sum of the projected area of the silver halide grains are tabular silver halide grains having an aspect ratio of 3.0 or more, and said developing solution contains (ii) a compound represented by formula (B): ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; and ##STR2## wherein X represents an oxygen atom or a sulfur atom, Y represents a hydrogen atom or a substituent group, and M represents a hydrogen atom, an alkali metal ion, a quaternary ammonium ion or a quaternary phosphonium ion.Type: GrantFiled: June 21, 1996Date of Patent: October 13, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Eiichi Okutsu, Shinnichi Morishima
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Patent number: 5804358Abstract: A solid developing composition for a silver halide black-and-white photographic light sensitive material is disclosed, comprising a developing agent selected from the group consisting of a dihydroxybenzene compound and a compound represented by formula (A), and the developing composition further comprising a compound represented by formula (1). ##STR1##CH.sub.3 (CH.sub.2).sub.n --(O).sub.m SO.sub.Type: GrantFiled: November 25, 1996Date of Patent: September 8, 1998Assignee: Konica CorporationInventors: Hideki Komatsu, Shoji Nishio
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Patent number: 5773202Abstract: A simple and effective bleaching method includes the use of a bleaching solution including a peroxide bleaching agent and chloride ion in an amount of at least 0.35 mol/l. An organic phosphonic acid or tertiary aminocarboxylic acid can also be present for stability. The method is useful for bleaching color photographic films containing at least 20 mol % silver bromide and from 0 to about 0.5 mol % silver iodide in at least one silver halide emulsion.Type: GrantFiled: March 29, 1996Date of Patent: June 30, 1998Inventors: Shirleyanne Elizabeth Haye, Terrence Robert O'Toole, David Leroy Cole, John Michael Buchanan
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Patent number: 5763147Abstract: A simple and effective peroxide bleaching method includes the use of a bleaching solution including a peroxide bleaching agent and chloride ion in an amount of at least 0.35 mol/l. An organic phosphonic acid or tertiary aminocarboxylic acid can also be present for stability. The method is useful for bleaching high silver bromide color negative photographic films containing at least 80 mol % silver bromide and from 0.5 to 5 mol % silver iodide in at least one silver halide emulsion.Type: GrantFiled: March 29, 1996Date of Patent: June 9, 1998Assignee: Eastman Kodak CompanyInventors: Shirleyanne Elizabeth Haye, Cheryl Ann Wilson-Bonner, Karen Ruth Ballou
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Patent number: 5756253Abstract: There are described novel photographic processing compositions, film units and processes for use in diffusion transfer photographic systems. More particularly, there is described a method for forming a diffusion transfer image photographic processing of diffusion transfer photographic film units in the presence of hypoxanthine and inosine. Diffusion transfer photographic systems utilizing the novel photographic element or method of the present invention exhibit substantially fewer, if any, crystals on the final image of the finished photograph post-processing.Type: GrantFiled: July 9, 1997Date of Patent: May 26, 1998Assignee: Polaroid CorporationInventors: Robert D. Eckert, Michael P. Filosa, Gerard Gomes, Anthony R. Layne, Marlene C. Schwarz, Lloyd D. Taylor
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Patent number: 5747229Abstract: A solid developing composition for processing a silver halide photographic light sensitive material is disclosed which contains a compound represented by the following formula (1) and a compound represented by the following formula (2): formula (1) ##STR1## formula (2) ##STR2##Type: GrantFiled: January 30, 1997Date of Patent: May 5, 1998Assignee: Konica CorporationInventor: Takuji Hasegawa
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Patent number: 5725998Abstract: A method of developing an exposed black and white silver halide photographic light-sensitive material with developer using an automatic processor is disclosed, the developing comprising supplying replenisher for developer in an amount of not more than 200 ml per m.sup.2 of the material, the material containing a hydrazine derivative and an infectious development nucleation agent, and the developer having a pH value of 10.0 to 11.2 and containing a dihydroxy benzene compound, a 3-pyrazolidone compound or an aminophenol compound, a sulfite of 0.3 to 1.Type: GrantFiled: April 10, 1997Date of Patent: March 10, 1998Assignee: Konica CorporationInventor: Takeshi Sanpei
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Patent number: 5723267Abstract: A silver halide photographic material comprising a photographic material constituting layer, which is processed with a developer containing as a developing agent a reductone represented by formula (I) ##STR1## wherein R represents a hydrogen atom or a hydroxyl group, andn represents an integer of from 1 to 4,wherein the photographic material constituting layer contains a calcium compound in an amount of not more than 10 mg/m.sup.2 of the photographic material in terms of calcium.Type: GrantFiled: September 10, 1996Date of Patent: March 3, 1998Assignee: Fuji Photo Film Co., Ltd.Inventor: Tadashi Ito
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Patent number: 5707790Abstract: A developing composition for a silver halide black-and-white photographic light sensitive material is disclosed, comprising a compound represented by formula (1) and a compound represented by formula (2) or (3): ##STR1##Type: GrantFiled: March 5, 1997Date of Patent: January 13, 1998Assignee: Konica CorporationInventor: Hiroyuki Yanagisawa
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Patent number: 5707787Abstract: A processing solution for processing an exposed silver halide photographic light-sensitive material comprises a compound represented by the following formula (A): ##STR1## wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4 each represent --COOM.sub.1, --OH, --PO.sub.3 M.sub.1 M.sub.2 or --CONH.sub.2 in which M.sub.1 and M.sub.2 each represent a hydrogen ion, an alkali metal ion or another cation; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent a hydrogen atom, a lower alkyl group or a hydroxyl group; n.sub.1, n.sub.2, n.sub.3 and n.sub.4 each represent an integer of 0, 1 or 2, provided that none of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen atoms when n.sub.1 +n.sub.2 =1 and n.sub.3 +n.sub.4 =1; and X represents a substituted or unsubstituted alkylene group having 2 to 6 carbon atoms or --(B.sub.1 O)m-B.sub.2 -- in which B.sub.1 and B.sub.2 each represent a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms, and m is an integer of from 1 to 4.Type: GrantFiled: August 11, 1993Date of Patent: January 13, 1998Assignee: Konica CorporationInventors: Kenji Kuwae, Yutaka Ueda
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Patent number: 5691108Abstract: A process for developing a silver halide photographic light-sensitive material is disclosed, comprising processing, after exposure, a silver halide photographic light-sensitive material which comprises a support having thereon at least one light-sensitive silver halide emulsion layer, the emulsion layer or other hydrophilic colloid layer containing a hydrazine-base nucleating agent having an anionic group in the vicinity of the hydrazine group or a nonionic group of forming an intramolecular hydrogen bond with the hydrogen atom of the hydrazine, or containing at least one hydrazine nucleating agent selected from the compounds represented by formula (I), and a nucleating accelerator, with a developer having a pH of from 9.0 to 11.0 and containing:(1) from 0.2 to 0.75 mol/l of a dihydroxybenzene-base developing agent,(2) from 0.001 to 0.06 mol/l of a 1-phenyl-3-pyrazolidone-base or p-aminophenol-base auxiliary developing agent,(3) from 0.3 to 1.Type: GrantFiled: October 24, 1996Date of Patent: November 25, 1997Assignee: Fuji Photo Film Co., LTD.Inventors: Mitsunori Hirano, Kouta Fukui
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Patent number: 5683859Abstract: An improved photographic developing composition, for use in development of a black-and-white silver halide photographic element, is comprised of at least one developing agent and, in an amount sufficient to inhibit sludge deposition, mercapto thiadiazole glycerol propoxylate. The developing composition is broadly useful in black-and-white development but is most advantageously employed in a process for forming a high-contrast image utilizing a silver halide photographic element comprising a hydrazine compound which functions as a nucleating agent and an amino compound which functions as an incorporated booster.Type: GrantFiled: May 20, 1996Date of Patent: November 4, 1997Assignee: Eastman Kodak CompanyInventors: Ronald Joseph Nothnagle, Jeffrey Richard Sefl, Harold Ihor Machonkin
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Patent number: 5660972Abstract: Disclosed is a method for developing silver halide photographic photosensitive materials with a developer containing a sulfite wherein said developer contains 20 mol % or more of potassium ion based on the total alkali metal ions, 0.04 mol/l or more of bromine ion or a compound represented by the following formula (I): ##STR1## wherein R.sub.1 represents a hydroxyalkyl group having 2-10 carbon atoms and R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group having 1-10 carbon atoms or a hydroxyalkyl group having 2-10 carbon atoms and the developer is filtered by a filter containing physical development nuclei before, during or after development of the photosensitive materials with the developer. The method is especially effective in processing using an automatic processor. According to the present method, formation of silver sludges is effectively inhibited and thus, stain of roll and belt of the processors can be prevented.Type: GrantFiled: March 14, 1995Date of Patent: August 26, 1997Assignee: Mitsubishi Paper Mills LimitedInventors: Hideto Kiyama, Tamotu Iwata, Yukinao Kawamata, Susumu Baba
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Patent number: 5658715Abstract: A silver halide color reversal photographic light-sensitive material processing method which forms a color reversal image by performing first black-and-white development, fogging process, color reversal development, and desilvering process by using a color reversal developer with a composition containing a non-dye-forming competing coupler, a silver halide fogging agent, and a carboxybenzenesulfonic acid compound and not containing hydroxylamine or its derivative.Type: GrantFiled: March 28, 1996Date of Patent: August 19, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Takashi Nakamura, Yasuhisa Ogawa
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Patent number: 5648205Abstract: A processing method for a silver halide photographic material is described, which comprises developing an exposed silver halide photographic material with a developing solution comprising:(a) an ascorbic acid developing agent,(b) an auxiliary developing agent exhibiting superadditivity,(c) an alkali agent necessary to maintain the pH from 9.2 to 9.8, and(d) a carbonate in a concentration from 0.30 mol/liter to 0.60 mol/liter.Type: GrantFiled: June 5, 1996Date of Patent: July 15, 1997Assignee: Fuji Photo Film Co., Ltd.Inventor: Eiichi Okutsu
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Patent number: 5607819Abstract: There is disclosed a color developer and a method for processing a silver halide color photographic material using said color developer. The color developer comprises a thiourea compound represented by the formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted cycloalkylene group, provided that two or more of R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each do not represent a hydrogen atom at the same time; at least one pair of R.sub.1 and R.sub.3, and R.sub.2 and R.sub.4, together may bond to form a nitrogen-containing heterocyclic ring; or at least one pair of R.sub.1 and R.sub.2, and R.sub.3 and R.sub.4, together may bond to form a ring.Type: GrantFiled: October 14, 1994Date of Patent: March 4, 1997Assignee: Fuji Photo Film Co., Ltd.Inventor: Takatoshi Ishikawa
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Patent number: 5595860Abstract: A process for processing a silver halide color photographic material, which comprises developing in a color developer substantially free of sulfite ion and containing an aromatic primary amine color developing agent and at least one phosphorus compound selected from the group consisting of compounds represented by formula (I), formula (I-a) and formula (I-b) and internal salts thereof: ##STR1## wherein R, R' and R" each represents an aliphatic hydrocarbon group or an aryl group; A represents a divalent or trivalent linking group; M, M' and M" each represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an ammonium or a quaternary ammonium; and m represents 2 when M, M' or M" is monovalent and m is 1 when M, M' and M" is divalent.Type: GrantFiled: April 27, 1995Date of Patent: January 21, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Masakazu Yoneyama
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Patent number: 5593817Abstract: A photographic developing solution and a method of developing silver halide materials in the said developing solution is disclosed, the said developing solution comprising hydroquinone in an amount from 0 to 30 g per litre, an auxiliary developer, and silver halide complexing agents in an amount from 0 to 50 g per litre, characterized in that said developer further comprisesin amounts from 0.1 to 5 g per litre a compound corresponding to the formula (I), accompanied by charge compensating anions,Z'N.sup.+ --R--N.sup.+ Z" (I)wherein at least divalent group R contains at least one oxyethylene group and wherein Z' and Z", being the same or different, are composed of enough atoms to form a heterocyclic aromatic 5- or 6-ring;andat least 1 g of a compound corresponding to the formula (II), a precursor thereof, a derivative thereof and/or a metal salt thereof ##STR1## wherein each of A, B and D independently represents an oxygen atom or NR.sup.1 ;X represents an oxygen atom, a sulphur atom, NR.sup.2 ; CR.sup.3 R.Type: GrantFiled: January 31, 1996Date of Patent: January 14, 1997Assignee: AGFA-Gevaert, N.V.Inventors: Freddy Henderickx, Ann Verbeeck, Pascal Meeus, Hieronymus Andriessen
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Patent number: 5591567Abstract: A method of processing a photographic light-sensitive material comprising a backing layer on a support opposite an emulsion layer comprises the steps of exposing the material, developing the exposed material with developer, the developer being replenished with developer replenisher in an amount of not more than 200 ml per m.sup.2 of the material, and fixing the developed material,wherein the backing layer contains in an amount of 5 to 200 mg/m.sup.Type: GrantFiled: March 29, 1995Date of Patent: January 7, 1997Assignee: Konica CorporationInventors: Hideki Komatsu, Shoji Nishio