Fixer Patents (Class 430/455)
  • Patent number: 5270148
    Abstract: A processing solution for a silver halide color photographic material, wherein said solution contains at least one kind of a compound represented by formula (I) and at least one kind of a compound represented by formula (A); ##STR1## wherein X represents a nonmetallic atomic group necessary for forming a nitrogen-containing heteroaromatic ring; ##STR2## wherein X.sub.0 represents a non metallic atomic group necessary for forming a nitrogen-containing heteroaromatic ring; and R.sub.a and R.sub.b, which may be same or different, each represents an alkyl group or an alkenyl group and R.sub.a and R.sub.b may be bonded each other to form a 4- to 8-membered ring, and a method for processing a silver halide color photographic material with the above processing solution.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: December 14, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Shigeru Nakamura, Yoshihiro Fujita, Hiroshi Kawamoto
  • Patent number: 5270154
    Abstract: A method for making flowable alkaline thiosulfate, flowable alkaline sulfite, or a combination of the two, by blending an alkaline thiosulfate, an alkaline sulfite, or a combination of the two, with an alkali metal arylsulfonate.formaldehyde in an amount effective to render the alkaline thiosulfate, the alkaline sulfite, or the combination freely flowable, and the product of this method. It has been found that the product of this method, such as freely flowable ammonium thiosulfate powder mixture, can be stored in a freely flowable condition for extended periods of time and can be dissolved into solution readily to form a clear non-turbid solution. The freely flowable ammonium thiosulfate powdered mixture of the present invention is particularly useful as a photographic fixative and bleach fixative for processing photographic elements.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: December 14, 1993
    Assignee: Fuji Hunt Photographic Chemicals Inc.
    Inventors: Hongzoon Kim, Charles J. Pfeiffer
  • Patent number: 5258258
    Abstract: Disclosed is a processing solution used for making lithographic printing plates by silver complex diffusion transfer process which contains at least one thioether derivative represented by the following formulas (I), (II) and (III): ##STR1## wherein n.sub.1 and n.sub.2 each represents 0, 1 or 2 and R.sub.1 and R.sub.2 each represents an alkylene group of 1-5 carbon atoms, ##STR2## wherein R.sub.1 represents an alkylene group of 1-5 carbon atoms, X represents a hydrogen atom, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, a hydroxy group, or --OR.sup.2 in which R.sup.2 has the same meaning as --R.sub.1 --S).sub.n CH.sub.2 CH.sub.2 OH above, and n represents 0, 1 or 2, ##STR3## wherein X' represents an aromatic or heterocyclic group which has a carboxy group, R.sub.1 and R.sub.2 each represents an alkylene group of 1-5 carbon atoms and n represents 0, 1, 2 or 3.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: November 2, 1993
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Eiji Matsubara, Hidetoshi Miura, Takimi Hashimoto
  • Patent number: 5256524
    Abstract: Disclosed is a processing method for silver halide color photographic light-sensitive material in which a silver halide color photographic light-sensitive material is processed with a processing solution capable of fixation and then a part or all of the overflow from stabilizer is allowed to enter in the processing solution capable of fixing wherein said silver halide color photographic light-sensitive material contains a coupler represented by Formula 2eq-1 and said stabilizer contains substantially no formaldehyde but contains a compound represented by Formula I or Formula II: ##STR1##R.sub.1 --O--(R.sub.2 --O).sub.m --X.sub.1 (Formula I) ##STR2## The total amount of silver coated in said silver halide color photographic light-sensitive material is not less than 3 g and not more than 10 g per m.sup.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: October 26, 1993
    Assignee: Konica Corporation
    Inventors: Hiroshi Yoshimoto, Shigeharu Koboshi, Masao Ishikawa, Mayumi Emoto
  • Patent number: 5254444
    Abstract: A photographic processing composition containing at least one compound represented by formula ##STR1## wherein R, R.sub.1 and R.sub.2 each represent a hydrogen atom, an alkyl group or an aryl group; and L.sub.1 represents an alkylene group or an arylene group. Also disclosed a processing composition for a silver halide color photographic material containing a metal chelate compound formed from a compound represented by formula (I) and a metal salt selected from salts of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(III), Au(II) and Ce(IV). A method is also disclosed for processing a silver halide photographic material with the processing compositions.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 19, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Shigeru Nakamura
  • Patent number: 5244777
    Abstract: A method of recovering silver from used photographic fixer solutions characterized in that the solution contains an alkali metal sulphite as the sole silver halide solvent.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: September 14, 1993
    Assignee: Eastman Kodak Company
    Inventor: John R. Fyson
  • Patent number: 5244778
    Abstract: An acid photographic fixing agent adapted for colour photography utilizing silver coating rates of up to 2.1 mg/dm.sup.2 whereby stabilized thiosulfate fixer solution has a concentration of less than 10 gpl of ammonium thiosulphate or its chemical equivalent, comprising a solution of an alkali metal thiosulphate or an ammonium thiosulphate or a mixture thereof stabilized by a soluble sulphite or bisulphite; characterized in that the ratio by weight of the soluble sulphite to the thiosulphate is greater than 1.2:1 or greater than 1.44:1 if the bisulphite is used; thereby to preferentially maintain the thiosulfate in use.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: September 14, 1993
    Assignee: Eastman Kodak Company
    Inventor: John R. Fyson
  • Patent number: 5236814
    Abstract: A method for processing a silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer, comprising steps ofdeveloping said light-sensitive material with a color developerbleaching, after said developing step, said light-sensitive material with a bleaching solution, andtreating, after said bleaching step, said light-sensitive material with a solution having fixing capability, whereinsaid light-sensitive material has a coating weight of silver of not more than 1 g/m.sup.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: August 17, 1993
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Shigeharu Koboshi
  • Patent number: 5232822
    Abstract: A method for processing a light-sensitive silver halide color photographic material including color developing processing, and fixing. The bleaching is with a bleaching solution containing at least one of ferric complexes of the compounds represented by the formula (A) or (b) shown below and has a pH of 2.0 to 5.5. The fixing is with a processing solution having fixing ability and which contains at least one mole/liter of a thiosulfate. Said processing solution having fixing ability contains a compound selected from the group (FB). ##STR1## wherein A.sub.1 to A.sub.4 may be either the same or different, and each represent --CH.sub.2 OH, --COOM or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.sub.1 and M.sub.2 each represent hydrogen atom, sodium atom, potassium atom or ammonium group; X represents a substituted or unsubstituted alkylene group having 3 to 6 carbon atoms, ##STR2## wherein A.sub.1 to A.sub.4 may be either the same or different and each represent --CH.sub.2 OH, --COOM or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: August 3, 1993
    Assignee: Konica Corporation
    Inventors: Masao Ishikawa, Shigeharu Koboshi
  • Patent number: 5221597
    Abstract: Disclosed is a method of processing a silver halide color photographic material where an imagewise exposed silver halide color photographic material is, after color-developed, processed with a bleaching solution contains (1,3-diamino-propanetetraacetato)iron (III) complex and that, when the material is processed with the said processing solution having a fixing ability, a jet stream of the said processing solution is run against the emulsion surface of the said photographic material. By the method, rapid desilvering is possible, and the material processed is not stained.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: June 22, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Shinji Ueda, Takatoshi Ishikawa, Akira Abe, Shigeru Nakamura
  • Patent number: 5217853
    Abstract: A method for development processing of a silver halide photosensitive material using an automatic processor including at least the functions of development, fixing, washing and drying is disclosed, comprising using an alkaline developer containing a dialdehyde film hardening agent and carrying out the processing under conditions such that the running equilibrium pH of the fixer is at least 4.6.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: June 8, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Yamada, Takashi Toyoda
  • Patent number: 5204212
    Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer reversal (DTR-) process, wherein said liquid contains 3-(N,N-diethylamino)propane-1,2-diol and contains phosphate ions in a concentration of not more than 0.03 mol/l.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: April 20, 1993
    Assignee: Agfa-Gevaert, N.V.
    Inventor: Jean-Pierre D. Tahon
  • Patent number: 5194368
    Abstract: The present invention relates to a method for processing a silver halide photographic light-sensitive material having at least one silver halide emulsion layer containing silver iodide with a processing solution having fixing ability after developing the light-sensitive material. The object of the present invention is to speed up the fixing process in the foregoing method and to reduce the amount of waste liquor from the fixing process. The present invention is characterized in that the processing with the processing solution having fixing ability is performed while the processing solution is brought into contact with an anion-exchange resin and that 20 to 2,000 l of the processing solution per liter of the anion-exchange resin is brought into contact with the resin.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: March 16, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Tetsuro Kojima, Tohru Kitahara, Tomokazu Yasuda, Yoshihiro Fujita, Takatoshi Ishikawa
  • Patent number: 5183727
    Abstract: A method of processing a color negative photographic recording material containing tabular grain silver halide emulsion units wherein the fixing agent comprises an aqueous solution of thiosulfate with low ammonium concentration. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The photographic recording material has a silver coverage of less than about 7.0 g/m.sup.2, and an iodide coverage of less than about 0.35 g/m.sup.2. The fixing bath has an ammonium concentration of less than about 1.2 molar, and ammonium may be absent entirely.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: February 2, 1993
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, Allan F. Sowinski
  • Patent number: 5171658
    Abstract: A method of removing silver chloride from a photographic silver halide material during processing which comprises treatment with an aqueous fixing solution containing an alkali metal sulphite as sole silver halide solvent. to remove substantially all of silver chloride in less than 50 seconds.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: December 15, 1992
    Assignee: Eastman Kodak Company
    Inventor: John R. Fyson
  • Patent number: 5162106
    Abstract: A process is disclosed for recovering silver sulfide from a spent photographic fixer solution, which contains silver. The process is particularly suited for treating the fixer solution in a manner which enables recycling of the solution giving rise to considerable reduction in cost of fixer solution and reduced environmental pollution. The process comprises introducing a hydrosulfide reagent into the fixer solution, which contains silver, to precipitate silver sulfide while maintaining pH and thiosulfate levels in the fixer to allow for reuse. The precipitate is isolated from the fixer solution to remove silver thereby and hence enable recycling of the fixer solution.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: November 10, 1992
    Assignee: The Governors of the University of Alberta
    Inventors: Wasyl Kunda, Thomas H. Etsell
  • Patent number: 5162192
    Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer reversal (DTR-) process, wherein wherein said liquid contains a mixture of alkanolamines, the said mixture consisting of (I) N-methyl-diethanolamine and of (II) N,N-dimethyl-ethanolamine in a total amount in the range from 0.3 mol/l to 1.5 mol/l, and in a molar ratio of (I) to (II) from 1/20 to 20/1.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: November 10, 1992
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Rene M. De Keyzer, Raymond L. Odeurs, Luc A. De brabandere
  • Patent number: 5155004
    Abstract: 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: Grant
    Filed: March 13, 1991
    Date of Patent: October 13, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tetsuro Kojima
  • Patent number: 5147765
    Abstract: A method for processing silver halide color photographic materials is disclosed, comprising:(1) color-developing an imagewise exposing silver halide color photographic material with a primary aromatic amine based color developing agent, and then(2) desilvering said photographic material by a process comprising the following steps conducted in sequence:(a) treating in a bleaching bath,(b) treating in a bleach-fixing bath, and(c) treating in a fixing bath,wherein said bleaching bath is a bath of a bleaching solution having a pH of not more than 5.0 which contains an aminopolycarboxylic acid ferric complex salt having a redox potential of at least 150 mV, said fixing bath is a bath of a fixing solution having a pH of at least 6.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: September 15, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masatoshi Goto, Yoshihiro Fujita, Shigeru Nakamura
  • Patent number: 5124229
    Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer reversal (DTR-) process, wherein said liquid contains one or more alkanolamines, the said alkanolamine(s) consisting of one or more tertiary alkanolamines in an amount in the range from 0.3 mol to 1.5 mol/l, and one or more secondary alkanolamines in an amount from 0 mol % to 5 mol % with respect to the amount of tertiary alkanolamine(s), and said liquid also contains a mixture of a silver image toning agent A being 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof and at least one other silver image toning agent B being a 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof, wherein the phenyl nucleus is substituted with halogen, the toning agent A and toning agent(s) B being present in said liquid in a molar ratio from 1/15 to 15/1.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: June 23, 1992
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Rene M. De Keyzer, Raymond L. Odeurs, Luc A. De Brabandere
  • Patent number: 5120635
    Abstract: A method for processing a silver halide photographic material which comprises processing an imagewise exposed silver halide photographic material with a processing solution having a fixing ability containing (1) a thiosulfate As disclosed, wherein said processing solution having a fixing ability further contains at least one of (2) at least one compound selected from the group consisting of a bisulfite and a sulfite, and a compound represented by formula (A'): ##STR1## wherein R'.sub.1, R'.sub.2, R'.sub.3, R'.sub.4 and R'.sub.5 each represents a hydrogen atom or a substituent other than a hydroxyl group or a group containing a hydroxyl group, provided that at least one of R'.sub.1 to R'.sub.5 is at least one of a sulfo group and a group constaining a sulfo group and (3) at least one bisulfite addition product of a compound represented by formula (A'). In the method, a fixing solution having a pH of from 5.0 to 9.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: June 9, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirotomo Sasaki, Tetsuro Kojima, Shinji Ueda
  • Patent number: 5108878
    Abstract: A silver halide photosensitive material after exposure can be efficiently processed in a multi-compartment apparatus comprising a series of processing compartments interconnected through narrow channels to define a continuous processing path, by passing the photosensitive material through the series of compartments along the path. Two or more processing solutions of different compositions are supplied to the path at different positions to fill the compartment with the solutions, while the solution is discharged from the path through an outlet port at an intermediate position. During a quiescent period, the solution is discharged such that the compartment which the photosensitive material first enters and the compartment from which the photosensitive material exits become empty. Operation is restarted by refilling the entrance and exit compartments with fresh solutions.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: April 28, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takashi Nakamura
  • Patent number: 5093228
    Abstract: A method for processing a silver halide color photographic material is disclosed, comprising the step of:(a) developing an imagewise exposed silver halide color photographic material,(b) processing the developed silver halide color photographic material with a bath having a bleaching ability, and(c) processing the bleached silver halide color photographic material with a bath having a fixing ability, wherein said bath having a bleaching ability comprises 0.2 mol/liter or more of a (1,3-diaminopropanetetraacetato)iron (III) complex salt and has a pH of from 2.5 to 5.5, and said bath having a fixing ability comprises at least one aminopolycarboxylic acid and an organic phosphonic acid.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: March 3, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shigeru Nakamura
  • Patent number: 5068170
    Abstract: A method for processing an imagewise exposed silver halide color photographic material for photography which comprises the steps of:color-developing a silver halide color photographic material with a color developing solution,processing said developed silver halide color photographic material with a bleaching solution, and thenprocessing said bleached silver halide color photographic material with a processing solution having a fixing ability, wherein the replenishment rate of said color developing solution is 600 ml or less per m.sup.2 of the photographic material; said bleaching solution contains a bleaching agent having an oxidation reduction potential of 150 mV or more and further an organic acid having a pKa of from 2 to 5.0, provided that an aminopolycarboxylic acid or a salt thereof and an iron complex salt of the aminopolycarboxylic acid are excluded, in an amount of 1.2 mol or more per liter of the bleaching solution; said bleaching solution has a pH value of 3.0 to 5.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: November 26, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akira Abe
  • Patent number: 5066570
    Abstract: A processing tank is partitioned into a plurality of compartments which are serially connected to define a continuous processing path having an entrance and an exit for photosensitive material. The path is filled with a processing solution having a desilvering function such that the processing solution in at least one compartment has a different composition from the processing solution in at least one of the remaining compartments. Silver halide photosensitive material is successively passed through the compartments without contact with the ambient air. Desilvering the photosensitive material after exposure and development in this way reduces the amount of processing solution used, especially replenished, while achieving improved photographic properties.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: November 19, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Nakamura, Toshio Kurokawa
  • Patent number: 5066569
    Abstract: In the improved method of processing an imagewise exposed silver halide photographic material that has photographic constituent layers on a side of a support with an automatic processor, comprising:circulating a fixing solution in a fixing bath being discharged in a volume of 30-200% per minute of a capacity of said fixing bath and at a flow rate of not less than 20 m per minute,wherein said silver halide photographic material has a gelatin content of not more than 3.0 g/m.sup.2 in said photographic constituent layers, andsaid photographic constituent layers comprise a silver emulsion layer which contains silver halide grains having a (100) face to (111) face area ratio of not less than 5.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: November 19, 1991
    Assignee: Konica Corporation
    Inventors: Toshiharu Nagashima, Kazuhiro Yoshida
  • Patent number: 5063136
    Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer (DTR-) process, wherein said liquid contains one or more alkanolamines, the said alkanolamine(s) consisting of one or more tertiary alkanolamines in an amount in the range from 0.15 mol to 1.5 mol/l, and one or more secondary alkanolamines in an amount higher than 5 mol % but not higher than 100 mol % with respect to the amount of tertiary alkanolamine(s), and said liquid also contains a mixture of a silver image toning agent A being 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof and at least one other silver image toning agent B being a 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof, wherein the phenyl nucleus is substituted with halogen, the toning agent A and toning agent(s) B being present in said liquid in a molar ratio from 1/15 to 15/1.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: November 5, 1991
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Rene M. De Keyzer, Raymond L. Odeurs, Luc A. De brabandere
  • Patent number: 5055382
    Abstract: A three-part bleach-fix regeneration kit is utilized to restore the capability of a spent bleach-fix solution to function as a working solution in photographic processing. The first part, which is an aqueous alkaline solution containing a buffering agent and an aminopolycarboxylic acid, is added to the spent bleach-fix solution prior to electrolytic recovery of silver therefrom. The second and third parts, which are aqueous acidic solutions containing, respectively, an iron salt and a thiosulfate fixing agent, are added after electrolytic recovery of silver. The first part functions to increase the pH of the spent bleach-fix solution to a level at which electrolytic silver recovery is optimized, while the second and third parts function to lower the pH to an optimum level for use in photographic processing. In addition to providing the necessary pH changes, addition of the three parts in this manner restores all necessary components to their proper concentration.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: October 8, 1991
    Inventors: John J. Long, Susan R. Krauss, Thomas P. Cribbs, III
  • Patent number: 5043246
    Abstract: A non-light-sensitive image-receiving element useful in a silver complex diffusion transfer process includes at least one layer containing certain S-thiuronium alkyl sulfonates which act as tone controlling agents that accelerate the physical development of silver.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: August 27, 1991
    Assignee: Eastman Kodak Company
    Inventors: Anthony M. Barnett, Colin J. Gray, Julie Baker
  • Patent number: 5026629
    Abstract: A fixing bath and a method of fixing wherein the bath contains an imidazole compound that facilitates the removal of thiosulfate from the film in addition to reducing the presence of stain in the resulting film.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: June 25, 1991
    Assignee: Eastman Kodak Company
    Inventors: Hugh G. McGuckin, Michael G. Blount, Paul Schwartz, Donald F. McLaen, James L. Lyon
  • Patent number: 4963474
    Abstract: 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: Grant
    Filed: February 13, 1989
    Date of Patent: October 16, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Shinji Ueda, Takatoshi Ishikawa, Akira Abe
  • Patent number: 4948711
    Abstract: 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: Grant
    Filed: February 27, 1989
    Date of Patent: August 14, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuro Kojima, Yoshihiro Fujita, Junichi Yamanouchi, Tomokazu Yasuda
  • Patent number: 4837140
    Abstract: 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: Grant
    Filed: June 8, 1987
    Date of Patent: June 6, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ikeda, Tadashi Ogawa
  • Patent number: 4812391
    Abstract: A silver halide photographic material having good granularity, high sensitivity and excellent fixability, comprising a support and at least one photosensitive silver halide emulsion layer containing silver halide grains. The silver halide grains have an average iodine content of at least 3 mole %, and the photographic material further contains a polymer capable of providing a cation site in a fixing solution on the same side as the photosensitive layer.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: March 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ichizo Toya, Tomokazu Yasuda
  • Patent number: 4804616
    Abstract: 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: Grant
    Filed: November 19, 1987
    Date of Patent: February 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Junya Nakajima
  • Patent number: 4797352
    Abstract: A method of processing an imagewise exposed silver halide photographic light-sensitive material characterized in that said material is developed and then processed with a first liquid capable of fixing and is, in succession, processed with a second liquid capable of stabilizing, without applying any intervening washing step, and containing at least one of the following compounds:(A) a guanidine compound represented by ##STR1## (B) a morpholine compound; (C) a benzimidazole carbamate compound represented by 2-carbonyl-amino-benzimidazole;(D) a quaternary onium salt compound;(E) a triazine compound represented by the following Formula (1) or (2) ##STR2## wherein R is an alkyl group and R' is a halogen, amino group, alkyl group, or thioether group; or(F) an oxazolone compound containing at least one each of N, O, and C.dbd.O in the five-membered ring thereof;and wherein a ratio of a volume of said first liquid to a volume of said second liquid is not less than 1/2,000.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: January 10, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shigeharu Koboshi, Masayuki Kurematsu
  • Patent number: 4756996
    Abstract: 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: Grant
    Filed: November 3, 1986
    Date of Patent: July 12, 1988
    Assignee: Polaroid Corporation
    Inventor: Frank E. Debruyn, Jr.
  • Patent number: 4737450
    Abstract: 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: Grant
    Filed: February 6, 1987
    Date of Patent: April 12, 1988
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey L. Hall, Jacob J. Hastreiter, Jr.
  • Patent number: 4713313
    Abstract: Compounds which include a quaternary group connected to a pyrimidine residue through a linkage are disclosed. These compounds are useful as silver halide solvents in photographic products, processes and compositions.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: December 15, 1987
    Assignee: Polaroid Corporation
    Inventors: James R. Bartels-Keith, deceased, Anthony J. Puttick, Lloyd D. Taylor
  • Patent number: 4695529
    Abstract: 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: Grant
    Filed: October 15, 1986
    Date of Patent: September 22, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Junya Nakajima, Toshihiro Nishikawa
  • Patent number: 4695530
    Abstract: A method for forming an image in a silver halide color photographic light-sensitive material comprising developing an imagewise exposed silver halide color photographic light-sensitive material and then bleach fixing the silver halide color photographic light-sensitive material in a bleach fixing bath, the silver halide photographic color light sensitive material comprising a support having thereon a silver halide emulsion layer containing a yellow coupler, a silver halide emulsion layer containing a magenta coupler and a silver halide emulsion layer containing a cyan layer, wherein the silver halide emulsion layer containing the magneta coupler contains at least one kind of pyrazoloazole type coupler represented by the general formula (I): ##STR1## wherein R.sup.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: September 22, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kotaro Nakamura, Takatoshi Ishikawa
  • Patent number: 4695535
    Abstract: A photographic silver halide emulsion is described which comprises an acyclic thioether compound which is capable of enhancing silver halide crystal growth without causing fog formation. A process for preparation of the emulsion is also described.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: September 22, 1987
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Arthur H. Herz
  • Patent number: 4632896
    Abstract: There is disclosed a processing solution for silver complex diffusion transfer process which contains at least one amino alcohol having a pKa value of less than 9 and at least one amino alcohol having a pKa value of 9 or more which are measured in a 50 wt % aqueous ethanol solution at 25.degree. C.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: December 30, 1986
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Yasuo Tsubai, Koji Okazaki
  • Patent number: 4575452
    Abstract: A method and kit for the optical detection of proteins and nucleic acids in a matrix, such as polyacrylamide electrophoresis gels. The method comprises fixing the proteins and nucleic acids in the matrix using aromatic sulfonic acids having tertiary amines capable of forming coordination complexes with silver ion.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: March 11, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Duk H. Lee, Thomas J. O'Connell, III
  • Patent number: 4568634
    Abstract: The present invention relates to a composition for processing, by the silver salt diffusion transfer technique, a photographic material which contains a developing agent and at least one each of a silver halide photographic emulsion layer and an image receiving layer containing nuclei for physical development. The composition contains about 0.03 mol/l to about 0.10 mol/l of a phosphate salt and about 0.3 mol/l to about 1.0 mol/l of a compound of the following formula (I): ##STR1## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sup.1 is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sup.2 and R.sup.3 are each a hydrogen atom or a hydroxyl group, respectively; m and n are each 0 or 1, provided that m and n are not 0 at the same time. The processing composition allows for obtaining a high contrast image by the silver salt diffusion transfer technique.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: February 4, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Katsumi Hayashi
  • Patent number: 4524129
    Abstract: A method for processing a color photographic light-sensitive material by subjecting an exposed silver halide color photographic light-sensitive material to color development processing then to bleaching processing and fixing processing or to bleach-fixing processing, which process comprises using a ferric ion complex salt or a persulfate as a bleaching agent in the bleaching processing or bleach-fixing processing and incorporating a compound represented by the general formula (I) described below or a salt thereof in a bath of the bleaching processing or bleach-fixing processing or in a pre-bath thereof. ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom or a lower alkyl group; X represents a --NH.sup.3 R.sup.4 group, a --COOM group, a --SO.sub.3 M group or a hydroxy group; R.sup.3 and R.sup.4, which may be the same or different, each represents a hydrogen atom or a substituted or unsubstituted alkyl group or R.sup.3 and R.sup.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: June 18, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Shigeru Ohno, Teruaki Tsujikawa
  • Patent number: 4500632
    Abstract: A process for stabilizing a silver image is disclosed. The process is utilized in connection with a photographic material which is comprised of a water impermeable support having one or more light-sensitive silver halide emulsion layers thereon. After the photographic material is exposed and developed it is subjected to further processing by conventional means. However, within the further processing an aqueous solution is utilized which includes any compounds represented by the general formula (I), (II) or (III) as defined within the specification. The compound(s) represented by the general formula is/are generally present within the processing solution in a total amount of about 0.1 to 10 g/l of processing solution. By utilizing the aqueous solution containing the compound represented by the general formula within the processing, it is possible to greatly increase the stability of the silver image formed.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: February 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunioki Ohmura, Masaaki Torigoe, Isamu Itoh, Katsumi Hayashi
  • Patent number: 4469781
    Abstract: The disclosed invention is a means for preventing the reduction of color density caused by the formation of leuco compounds from cyan dyes when processing color photographic materials with a bleach solution or a blix solution containing benzyl alcohol. The invention involves incorporating the compound shown by the following formula (I) in the bleach solution or blix solution: ##STR1## wherein X represents a hydrogen atom or an acetyl group; R represents an aryl group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: September 4, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Takashi Nakamura
  • Patent number: 4465763
    Abstract: A process for the production of photographic color images by the silver dye bleach process, by exposure, silver development, dye formation, dye bleach, silver bleach and fixing of a photographic material which, in a light-sensitive silver halide emulsion layer or in an adjacent layer, contains, dispersed in oil, an oil-soluble triazene of the formula ##STR1## and an oil-soluble coupling component of the formula ##STR2## in which Ar.sub.1 is aryl or an aromatic heterocyclic radical, R.sub.1 is hydrogen, alkyl, aryl, hydroxyl, --(CH.sub.2 CH.sub.2 O).sub.r --L.sub.1 or --OL.sub.1, in which L.sub.1 is alkyl and r is 1, 2 or 3, or R.sub.1 is ##STR3## in which V is hydrogen or alkyl, and R.sub.2 is alkyl, aryl or --(CH.sub.2 CH.sub.2 O).sub.r --L.sub.1, or R.sub.1 and R.sub.2, conjointly with the nitrogen atom to which they are bonded, form a ring, A.sub.1 and A.sub.2 independently of one another are an amine of the formula --NT.sub.1 T.sub.2, in which T.sub.1 and T.sub.
    Type: Grant
    Filed: May 4, 1983
    Date of Patent: August 14, 1984
    Assignee: Ciba Geigy AG
    Inventors: Eddy Forte, Mario Fryberg, Gerald Jan
  • Patent number: H953
    Abstract: A method for processing a silver halide color photographic material which comprises the steps of, after color-developing, processing the silver halide color photographic material with a bleaching bath, and then processing with a fixing bath, wherein the bleaching bath has a pH value of from 2.5 to 5.5 and contains a (1,3-diaminopropane-tetraacetato)iron(III) complex salt in an amount of at least 0.2 mol/liter and an organic acid in an amount of at least 0.5 mil/liter, and the fixing bath contains at least one compound selected from formulae (I), (II), (III), (IV), and (V):R.sup.1 --(X--R.sup.3).sub.m --X--R.sup.2 (I)wherein m represents 0 or an integer of from 1 to 4; R.sup.1 and R.sup.2 each represents a substituted or unsubstituted alkyl group; R.sup.3 represents a substituted or unsubstituted alkylene group, provided that when m is 2 or more, the R.sup.3 groups in each of the (X--R.sup.3) segments may be the same or different; and X represents sulfur, oxygen, ##STR1## wherein Z represents ##STR2## --OR.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: August 6, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masatoshi Goto, Kiyoshi Morimoto, Haruhiko Iwano