Stabilizing Patents (Class 430/428)
  • Patent number: 5753424
    Abstract: In a process for processing a silver halide color photosensitive material having a transparent substrate each possessing at least one red-sensitive layer, at least one green-sensitive layer, and at least one blue-sensitive layer and containing ferromagnetic fine powder, when a salt content in the final bath is not more than 7000 ppm in the processing stages of water washing and/or stabilization after the color development and desilvering, the deterioration in an S/N ratio of a magnetically recorded information can be drastically improved.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: May 19, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takatoshi Ishikawa
  • Patent number: 5750322
    Abstract: Various photographic films, that have already been photographically processed, can be cleaned or washed using an aqueous wash solution comprising a phospholipid in an amount of at least 50 ppm, to remove dust, dirt, or oily fingerprints. This solution can be particularly useful for rewashing color motion picture films.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: Hugh G. McGuckin, John S. Badger, Edward A. Kurz
  • Patent number: 5744288
    Abstract: A color image can be rapidly provided by color developing an imagewise exposed, duplitized color photographic element that has an ISO of at least 25. The duplitized elements have at least one light sensitive silver halide imaging layer or color recording unit on each side of the support.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: April 28, 1998
    Assignee: Eastman Kodak Company
    Inventors: John M. Buchanan, Anne E. Bohan, Richard P. Szajewski
  • Patent number: 5741631
    Abstract: A process for the formation of a dye image by a redox amplification process in an imagewise exposed photographic color material having at least one silver halide layer and associated therewith a dye image-forming color coupler, comprises treating the material in a color developer solution containing a color developing agent and hydroxylamine as developing agent preservative. The color developing solution is replenished directly as solids or liquid concentrates with or without additional water. The process is carried out in a tank in which the ratio of the tank volume to maximum area of material accommodatable therein is less than 11 dm.sup.3 /m.sup.2.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: April 21, 1998
    Assignee: Eastman Kodak Company
    Inventor: Peter Jeffery Twist
  • Patent number: 5738978
    Abstract: A method for processing a silver halide color photographic material comprising a step of processing an exposed silver halide color photographic material with an automatic processor, a color developing solution used in the processing step containing triisopropanolamine, and a conveying rate of the automatic processor being 1,100 mm/min. or more.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: April 14, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuaki Yoshida, Jun Noguchi, Kiyoshi Morimoto
  • Patent number: 5723266
    Abstract: A method of processing a photosensitive material is provided in which change in photographic properties is not caused and reading properties for magnetic recording information of a photosensitive material including a magnetic recording layer does not deteriorate. In the method of processing a photosensitive material using a photosensitive material processing apparatus in which a photosensitive material is immersed in processing solutions respectively accommodated in a plurality of processing tanks which are provided adjacent to each other along a direction in which the photosensitive material is conveyed, the photosensitive material processing apparatus includes a conveying roller pair for conveying the photosensitive material, which is provided in at least one portion of the processing apparatus, and a partition portion which is partitioned by a roller provided between adjacent processing tanks of the plurality of processing tanks and which allows the photosensitive material to pass therethrough.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: March 3, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kiyoshi Morimoto
  • Patent number: 5721094
    Abstract: A method of processing an exposed silver halide photographic light sensitive material is disclosed which comprises the steps of:developing the exposed material with developer, the developer being replenished with developer replenisher and the developer containing no dihydroxy benzene and containing a developing agent represented by the following Formula ?1!: ##STR1## wherein R.sub.1 and R.sub.2 independently represent an alkyl group, an amino group, an alkoxy group or an alkylthio group, or R.sub.1 and R.sub.2 combine with each other to form a ring, k represents 0 or 1, and X represents --CO-- or --CS--;fixing the developed material;stabilizing the fixed material with a washing water which is replenished with water replenisher in a replenishing amount of 0.5 to 2 liter/m.sup.2 or with a rinsing solution which is replenished with a rinsing replenisher in a replenishing amount of 0 to 2 liter/m.sup.2 ; anddrying the stabilized material.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: February 24, 1998
    Assignee: Konica Corporation
    Inventors: Hideki Komatsu, Shoji Nishio
  • Patent number: 5716765
    Abstract: Photographic films having a magnetic recording layer are processed using a final processing solution containing a mixture of surfactants. The final processing solution can be a final rinse solution or an image stabilizing solution further containing an image stabilizer. The specific final processing solution composition provides processed films that are free of scum, non-tacky, and resistant to abrasion and fingerprinting on the back side.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: February 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: Hugh Gerald McGuckin, John Stuart Badger, Brad Mitchell Boersen
  • Patent number: 5707789
    Abstract: A solid processing composition for a silver halide photographic light-sensitive material is disclosed which comprises a saccharide and a compound selected from the group consisting of a hexamethylenetetramine compound and compounds represented by the following Formulas (I), (G), (H-1), (H-3) and (H-3): ##STR1##
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: January 13, 1998
    Assignee: Konica Corporation
    Inventor: Koji Takemura
  • Patent number: 5693440
    Abstract: The present invention relates to the use of multivariate statistical process control as a means of process verification in photographic processes. The method of the present invention allows the process to be controlled in a simple and effective manner by deriving T.sup.2 for a series of variables which impact the material performance characteristics and comparing this value of T.sup.2 with a standard value for the particular system. The contributions of scores to T.sup.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: December 2, 1997
    Assignee: Eastman Kodak Company
    Inventors: Vicki Ann Barbur, Andrew Green
  • Patent number: 5667948
    Abstract: Various photographic films can be rinsed using an aqueous final rinse solution comprising a phospholipid in an amount of at least 50 ppm. This solution can be particularly useful as a final rinse for color motion picture films.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: September 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: Hugh Gerald McGuckin, John Stuart Badger, Edward Albert Kurz
  • Patent number: 5652085
    Abstract: Aminosuccinic acid chelants are disclosed which have been found to be applicable in photographic processes. The aminosuccinic acids can be used in a method of bleaching or bleach-fixing a silver halide photographic material comprising contacting the photographic material with a bleaching solution containing at least one metal complex of a polyamino disuccinic acid and one or more metal complexes of a polyamino monosuccinic acid or a monoamino monosuccinic acid.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: July 29, 1997
    Assignee: Eastman Kodak Company
    Inventors: David A. Wilson, Druce K. Crump, Eric R. Brown
  • Patent number: 5645980
    Abstract: An aqueous solution for rinsing silver halide photographic elements comprising a nonionic surfactant and an anionic surfactant, wherein the solution has a surface tension of 32 dynes/cm or less and a method for using the rinsing solution.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: July 8, 1997
    Assignee: Eastman Kodak Company
    Inventors: Hugh Gerald McGuckin, John Stuart Badger, Ronald Anthony Gogle, Paul Joseph Riesenberger, Michael William Orem
  • Patent number: 5635341
    Abstract: A solution for bleaching or bleach-fixing an exposed and developed silver halide color photographic light-sensitive material contains a ferric complex salt of a compound represented by the following Formula (A-I), (A-II) or (A-III), and a compound represented by the following Formula (B): ##STR1##
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: June 3, 1997
    Assignee: Konica Corporation
    Inventors: Hiroshi Yamashita, Yutaka Ueda
  • Patent number: 5633124
    Abstract: This invention provides a process for removal of silver halide from a silver halide photographic recording material by a processing solution with fixing ability (a fixer) containing thiosulfate as a fixing agent conducted in the presence of a thioether compound incorporated within a fixer formulation. It further provides a fixer formulation for use in said process. The fixer contains a maximum ammonium ion concentration of 0.9M.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: May 27, 1997
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, Jacob J. Hastreiter, Jr., Stuart T. Gordon
  • Patent number: 5587277
    Abstract: A solid photographic processing composition in tablet form for a silver halide photographic light sensitive material is provided, wherein at least a part of the surface of said solid processing composition is covere-coated with a compound selected from (i) a polyalkylene glycol having an average molecular weight of 2000 to 20000, (ii) a monosaccharide or disaccharide and (iii) a vinyl polymer having a betaine structure. The tablets of the processing composition are enclosed in a package, and introduced into a processing tank.
    Type: Grant
    Filed: July 11, 1995
    Date of Patent: December 24, 1996
    Assignee: Konica Corporation
    Inventors: Hiroshi Yamashita, Yutaka Ueda
  • Patent number: 5585226
    Abstract: Polyamino monosuccinic acid chelants are disclosed which have been found to be applicable in photographic processes. The polyamino monosuccinic acids can be used in a method of bleaching or bleach-fixing a silver halide photographic material comprising contacting the photographic material with a bleaching solution containing a metal complex of a polyamino monosuccinic acid as a bleaching agent.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: December 17, 1996
    Assignee: Eastman Kodak Company
    Inventors: Alan D. Strickland, David A. Wilson, Eric R. Brown
  • Patent number: 5582958
    Abstract: A photographic bleaching or bleach/fixing composition contains a water-soluble ternary complex of an iron ion, a polycarboxylate ligand, and a second ligand which has at least one carboxyl group on an aromatic nitrogen heterocycle, such as a pyridinecarboxylic acid. Preferred materials are biodegradable, but all of the ternary complexes can be used in a variety of bleach or bleach/fix processes to good advantage as bleaching agents. They are particularly suitable for use in rehalogenating ferric chelate bleaches.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: December 10, 1996
    Assignee: Eastman Kodak Company
    Inventors: John M. Buchanan, Eric R. Brown, Stuart T. Gordon
  • Patent number: 5578432
    Abstract: A stabilizing bath that provides image stability and uniform drainage of excess fluid to prevent drying spots and that reduces or eliminates the formation of residue on the base side of color negative films is comprised of hexamethylenetetramine, a nonionic polyethoxylated surfactant, and an anionic sulfate or sulfonate surfactant. The stabilizing bath is used as the final processing bath prior to drying. The nonionic surfactant provides uniform drainage of excess fluid and the anionic sulfate or sulfonate surfactant functions to reduce or eliminate the formation of residue on the base side of color negative films.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: November 26, 1996
    Assignee: Eastman Kodak Company
    Inventors: Hugh G. McGuckin, John S. Badger, Michael W. Orem
  • Patent number: 5576151
    Abstract: A processing solution for a silver halide color photographic material, said solution containing at least one kind of compound represented by formula (I) or (III): ##STR1##
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: November 19, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Hiroshi Kawamoto, Shigeru Nakamura
  • Patent number: 5556737
    Abstract: The present invention relates to a method for forming a color image in a silver halide color photographic material comprising a reflective support having coated thereon a composition comprising a polyester resin and a white pigment mixed and dispersed in said polyester resin, at least one yellow color forming silver halide photosensitive emulsion layer, at least one magenta color forming silver halide photosensitive emulsion layer, and at least one cyan color forming silver halide photosensitive emulsion layer on said support, each of said yellow, magenta and cyan color forming silver halide photosensitive emulsion layers having silver halide grains containing 95 mol % or more of silver chloride, wherein said method comprises the steps of exposing imagewise said silver halide color photographic material to light, developing said imagewise exposed silver halide color photographic material in a color developing solution, subjecting said developed silver halide color photographic material to desilvering by bleac
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: September 17, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Koichi Nakamura
  • Patent number: 5552264
    Abstract: A conditioning or bleach accelerating solution can be used to process color photographic films, especially color reversal films, to minimize magenta dye fade while reducing the needed amount of formaldehyde stabilizer. This solution is provided in highly concentrated form and diluted up to 9:1 prior to or during use. The concentrate contains a formaldehyde precursor at 200 to 450 g/l, a sulfite at from 40 to 100 g/l, a bleach accelerating agent at 1.5 to 13.5, and a metal ion chelating agent at 5 to 45 g/l.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: September 3, 1996
    Assignee: Eastman Kodak Company
    Inventors: Ann M. Cullinan, Charles M. Darmon, Rosa P. Sauter, Charles F. Leith
  • Patent number: 5547817
    Abstract: Photographic processing using an additive represented by formula (I): ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon group, an aryl group, or a heterocyclic ring group; R.sub.2 is hydrogen, an aliphatic hydrocarbon group, an aryl group, or a heterocyclic ring group; L.sub.1, L.sub.2, L.sub.3, L.sub.4 and L.sub.5 are independently an alkylene group; m and n are independently 0 or 1; W.sup.1 and W.sup.2 are independently an alkylene group, an arylene group, aralkylene group or a divalent nitrogen-containing heterocyclic ring group; D is a single bond, --O--, --S-- or --N(R.sub.w), where R.sub.2 is hydrogen, an aliphatic hydrocarbon group or an aryl group; v is 0 or an integer or from 1 to 3; w is an integer of from 1 to 3; and M.sub.1, M.sub.2, M.sub.3 and M.sub.4 are independently hydrogen or a cation.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: August 20, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Tadashi Inaba, Ryo Suzuki, Hideaki Nomura
  • Patent number: 5534396
    Abstract: A photographic rinse composition has been developed which reduces jamming in the processing of photographic print materials and prevents biological growth on and leaching of materials from the print materials. This composition includes a vinyl pyrrolidone polymer, at least about 0.02 g/l of a biocide mixture comprising 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, and at least about 0.02 g/l of an alkyl ether sulfate surfactant. Cupric ion can also be included to stabilize the biocide mixture.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: July 9, 1996
    Assignee: Eastman Kodak Company
    Inventors: Hugh G. McGuckin, Jerel R. Carli, John S. Badger, Stephen J. Waffle
  • Patent number: 5534395
    Abstract: A method of processing a silver halide color photographic material by processing with a color developing solution an imagewise exposed silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and immediately thereafter processing said photographic material with a bleach-fixing solution, wherein said bleach-fixing solution contains an imidazole compound represented by the following formula (.alpha.) and the replenishment rate of said bleach-fixing solution is 200 ml or less per m.sup.2 of the photographic material: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, a hydroxyalkyl group having from 1 to 5 carbon atoms, or an alkenyl group.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 9, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsushige Kamada, Kazuaki Yoshida
  • Patent number: 5529890
    Abstract: A stabilizing bath that provides image stability and uniform drainage of excess fluid to prevent drying spots and that reduces or eliminates the formation of residue on the base side of color negative films is comprised of hexamethylenetetramine, a nonionic polyethoxylated surfactant, and an anionic sulfate or sulfonate surfactant. The stabilizing bath is used as the final processing bath prior to drying. The nonionic surfactant provides uniform drainage of excess fluid and the anionic sulfate or sulfonate surfactant functions to reduce or eliminate the formation of residue on the base side of color negative films.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: June 25, 1996
    Assignee: Eastman Kodak Company
    Inventors: Hugh G. McGuckin, John S. Badger, Michael W. Orem
  • Patent number: 5523195
    Abstract: A conditioning or bleach accelerating solution can be used to process color photographic films, especially color reversal films, to minimize magenta dye fade while reducing the needed amount of formaldehyde stabilizer. These advantageous effects are achieved by including a secondary amine in the solution along with a formaldehyde precursor and a bleach accelerator.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: June 4, 1996
    Assignee: Eastman Kodak Company
    Inventors: Charles M. Darmon, Michael P. Youngblood, Rosa P. Sauter
  • Patent number: 5518868
    Abstract: To eliminate the "pi-line" artefact after processing a silver halide industrial photographic X-ray material is disclosed comprising on at least one side of a support, at least one gelatino silver halide emulsion layer and a total amount of silver halide, corresponding to from 6 to 20 g of silver nitrate per square meter and per side, and at least one non-sensitive protective antistress coating, wherein said photographic material comprises at least one vinyl sulphone compound as a hardening agent and at least one polyoxyalkylene compound as a surfactant in at least one of its hydrophilic layers.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: May 21, 1996
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Raymond Florens, Pieter Perdieus, Andre Roefs
  • Patent number: 5508150
    Abstract: A method of processing an image wise exposed and developed silver halide photographic element comprising bleaching the photographic element in a bleaching or bleach-fixing solution containing as the primary bleaching agent a complex of ferric ion and a tridentate or a tetradentate ligand, and then processing the photographic element in a solution containing a chelating compound represented by Formula IHOOC(CH.sub.2).sub.m (X) ((CH.sub.2).sub.n COOH).sub.2 (I)whereX is N, or C--OH;n and m are independently 0, 1, or 2; andM is a cationic ion.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: April 16, 1996
    Assignee: Eastman Kodak Company
    Inventors: Mary E. Craver, Janet M. Huston, Robert J. Opitz
  • Patent number: 5508155
    Abstract: Substituted hydroxylamine antioxidants can be prepared by reacting hydroxylamine or a mono-substituted hydroxylamine with an epoxide. The antioxidant reaction product is not removed from the reaction mixture, but is used without separation after combination with a color developer to provide a photographic color developer composition. The antioxidants are highly water soluble and thus exhibit no objectionable odor.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: April 16, 1996
    Assignee: Eastman Kodak Company
    Inventors: Carl A. Marrese, Paul A. Zielinski
  • Patent number: 5508421
    Abstract: A pyrrolotriazole azomethine dye represented by formula (I), (II) or (IV) is disclosed: ##STR1## Also, a heat transfer dye providing material is disclosed, in which the material includes a support having thereon a dye providing layer containing a heat migrating dye, with the dye providing layer containing at least one pyrrolotriazole azomethine dye represented by any of the above formulae (I), (II) and (IV).
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: April 16, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Suzuki, Hisashi Mikoshiba, Seiiti Kubodera, Osamu Takahashi, Yasuhiro Shimada, Koushin Matsuoka, Shigeru Yamazaki, Katsuyoshi Yamakawa, Kozo Sato
  • Patent number: 5464728
    Abstract: This invention provides a method of processing a developed high iodide color silver halide photographic element by bleaching the element with a peracid bleach and fixing the element with a fixer containing sodium cation and thiosulfate, wherein the amount of ammonium ion in the fixer is less than 1.4M.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: November 7, 1995
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Szajewski, John M. Buchanan
  • Patent number: 5457009
    Abstract: A method of processing a photographic material having, in the backing layer, at least one mercapto pyrimidine compound of formula (I), with an automatic developing machine, where the amount of the replenisher of the developer per unit area of the material being processed is reduced. The processed materials have stable photographic properties and few silver stains. The mercapto pyrimidine has the following structure ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a hydroxyl group, a mercapto group, a carboxyl group, a sulfo group, a phosphono group, a nitro group, a cyano group, a halogen atom, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, a sulfamoyl group or an alkoxy group. The sum of the carbon atoms contained in R.sub.1 and R.sub.2 is from 2 to 20. R.sub.1 and R.sub.2 may be bonded to each other to form a ring structure.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: October 10, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Toyoda, deceased, Eiichi Okutsu, Kouta Fukui
  • Patent number: 5451491
    Abstract: A method of desilvering an imagewise and developed color silver halide element, said method comprising bleaching the photographic element with a peracid bleach and subsequently contacting the photographic element with a fixer solution comprising thiosulfate anion and sodium cation;wherein the Molar-minute fixing Time is less than about 0.2 Molar-minutes.times.m.sup.2 /g Ag.times.the grams of incorporated silver per square meter of the photographic element.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: September 19, 1995
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Szajewski, John M. Buchanan
  • Patent number: 5449593
    Abstract: A processing solution for a silver halide color photographic material, said solution containing at least one kind of compound represented by formula (I), (II), or (III); ##STR1## the substituents are defined in the instant specification.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: September 12, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Hiroshi Kawamoto, Shigeru Nakamura
  • Patent number: 5443943
    Abstract: Unique imagewise exposed and developed originating color silver halide photographic elements can be processed with bleaching and/or fixing solutions. The element is characterized by several important features. It contains a silver halide grain population of at least 50 mole percent chloride, based on total silver forming the grain population projected area, wherein at least 50 percent of total grain projected area is accounted for by intrinsically stable tabular grains (1) bounded by {100} major faces having adjacent edge ratios of less than 10, and (2) an aspect ratio of at least 2. Also, at least 50 mole % of the element silver halide is silver chloride, and no more than 2 mole % silver iodide. It also contains a bleach accelerator releasing compound. The element is also free of a desilvering rate retarding amount of a development inhibitor releasing compound having a free sulfur valence which binds to silver.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: August 22, 1995
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Szajewski, John M. Buchanan
  • Patent number: 5441852
    Abstract: A method of processing a silver halide color photographic material by exposing the material to light, color developing, processing with a solution having a fixing function and thereafter, stabilizing the material. The stabilizing processing solution is one in for replacing formaldehyde in known processing solutions. The compound that replaces the formaldehyde is a meta substituted benzaldehyde. A method of using the processing solution is also disclosed.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: August 15, 1995
    Assignee: Konica Corporation
    Inventors: Moeko Hagiwara, Hiroaki Kobayashi
  • Patent number: 5434035
    Abstract: A method of treating a seasoned fixing solution comprising desilvering a fixing solution containing a chelating compound represented by Formula IMOOC(CH.sub.2)m(X)p((CH.sub.2).sub.n COOM).sub.q (I)where X is N, or C--OH;n and m are independently 0, 1, or 2;if X is N then p is 0 or 1 and q is 1 or 2;if X is C-OH then p is 0, 1 or 2 and q is 1 or 2; andM is a cationic counterion; andfurther containing a carryover amount of a bleaching agent which is a complex of ferric ion and a tridentate or a tetradentate ligand.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: July 18, 1995
    Assignee: Eastman Kodak Company
    Inventors: Mary E. Craver, Manuel A. Santos-Rosario, Keith H. Stephen
  • Patent number: 5427896
    Abstract: A method for processing a color photographic material comprising a support having on at least one surface thereof at least one layer containing a light-sensitive silver halide emulsion and a non-diffusing oil-soluble coupler capable of forming a dye by coupling with the oxidation product of an aromatic primary amine developing agent, wherein the oil-soluble dye is a pyrrolotriazole cyan coupler and the color photographic material is processed after color development with a bath containing, as a fixing agent, at least one of nitrogen-containing heterocyclic compounds having a sulfide group, meso-ionic compounds and thioether compounds.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: June 27, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroshi Hayashi
  • Patent number: 5424176
    Abstract: A fixing solution having a pH.gtoreq.7 and comprising a fixing amount of sulfite and a fix accelerating amount of a thioether compound; wherein the fixing solution contains less than 0.05 moles/liter of thiosulfate and a method of processing an imagewise exposed and developed silver halide photographic element comprising fixing in said fixing solution a silver halide photographic element containing at least one emulsion or deposit of silver halide comprising greater than 90 mole % silver chloride.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: June 13, 1995
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, Therese M. Feller, Stuart T. Gordon
  • Patent number: 5415979
    Abstract: A composition of stabilizer for processing silver halide photographic material is disclosed. The composition comprises a fluorinated anionic surfactant represented by Formula I; ##STR1## wherein Rf is an alkyl group having a fluorine atom, an alkenyl group having a fluorine atom or an alkinyl group having a fluorine atom; X is a sulfonamido group, a ##STR2## group or a ##STR3## group, in which Rf' is a saturated or unsaturated hydrocarbon group having a fluorine atom; Y is alkyleneoxide or alkylene; A is an --S.sub.3 M group, an --OSO.sub.3 M group, a --COOM group, an --OPO.sub.3 (M.sub.1) (M.sub.2) group or a --PO.sub.3 (M.sub.1) (M.sub.2) group, in which M, M.sub.1 and M.sub.2 are each a hydrogen atom, a lithium atom, a potassium atom, a sodium atom or an ammonium group; m is 0 or 1 and n is 0 or an integer of 1 to 10.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: May 16, 1995
    Assignee: Konica Corporation
    Inventors: Koji Takemura, Hiroaki Kobayashi
  • Patent number: 5401621
    Abstract: A process for processing an imagewise exposed silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, comprising the steps of developing in a developing bath and processing in a bath having a fixing ability, wherein the bath having the fixing ability contains at least one mesoionic compound represented by formula (I): ##STR1## In a second embodiment, a process is disclosed for processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, comprising the steps of subjecting the material to color development, and then subjecting the material to blix in a blix bath, wherein the blix bath contains at least one mesoionic compound represented formula (III) or (IV): ##STR2##
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: March 28, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuro Kojima, Nobuo Watanabe
  • Patent number: 5397687
    Abstract: The preparation of x-ray materials, especially suitable for non-destructive testing applications, is described. The emulsion layers of said material are comprising silver halide emulsion grains containing at least 75 mole % of silver chloride and less than 25 mole % of silver bromide and are characterized by a ratio between the amount of gelatin and the amount of silver halide, being expressed as the equivalent amount of silver nitrate, of less than 0.6. Hardening of said material is performed in such a way that the amount of demineralized water of 25.degree. C. absorbed in 3 minutes is less than 2.5 g per gram of gelatin present in said material. A rapid processing system is available with a total processing time of less than 3 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: March 14, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Peter Willems, Freddy Henderickx, Gino De Rycke, Romain Bollen
  • Patent number: 5378588
    Abstract: There is disclosed a method for processing a silver halide photographic light sensitive material comprising the steps ofdeveloping the light sensitive material with a developing solution,treating the light sensitive material with a fixing capacity-having solution, and thentreating the light sensitive material with a processing solution (S), wherein part of or the whole of overflow from a tank containing the processing solution (S) is allowed to flow into a tank containing the fixing capability-having solution, and wherein solid processing chemicals are added to the fixing capacity-having solution or the overflow from the tank containing the processing solution (S).
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: January 3, 1995
    Assignee: Konica Corporation
    Inventor: Ichiro Tsuchiya
  • Patent number: 5362609
    Abstract: Disclosed is a stabilizing solution for a light-sensitive silver halide color photographic material, comprises a compound represented by the following Formula F, and has a pH of from 7.5 to 10.0; ##STR1## wherein Z represents a group of atoms necessary to form a substituted or unsubstituted cyclic hydrocarbon or heterocyclic ring, X represents an aldehyde group, ##STR2## wherein R.sub.1 and R.sub.2 each represent a lower alkyl group. The stabilizing solution and the processing method for a light-sensitive silver halide color photographic material according to this invention, can provide a processing technique that can achieve a superior stability of dye images, can better prevent backside deposits, can promise superior solution stability, and can better prevent yellow staining.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: November 8, 1994
    Assignee: Konica Corporation
    Inventors: Kenji Kuwae, Hiroaki Kobayashi, Moeko Hagiwara
  • Patent number: 5362882
    Abstract: A novel pyrrolotriazole derivative is disclosed, represented by any one of formulae (I), (II), (III), (IV), or (V): ##STR1## A heat transfer dye providing material is also disclosed, comprising a support having thereon a dye providing layer containing a heat migrating dye, said dye providing layer containing at least one pyrrolotriazole azomethine dye represented by any one of formulae (I), (II), (III), or (IV).
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: November 8, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Suzuki, Yasuhiro Shimada, Koushin Matsuoka, Shigeru Yamazaki, Katsuyoshi Yamakawa, Kozo Sato
  • Patent number: 5360700
    Abstract: A process for developing and its after-treatment of an exposed silver halide photographic material which is capable of replacing a step of rinsing by water washing and a step of final stabilization by formaldehyde, with a single stabilizing step without water rinsing followed by directly to a drying step is disclosed.The process comprises a solution capable of bleaching containing a ferric complex salt of organic acid, diethylenetriaminepentaacetic acid and a like, and a stabilizing solution containing a certain aldehyde compound.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: November 1, 1994
    Assignee: Konica Corporation
    Inventors: Tomonori Kawamura, Shigeharu Koboshi
  • Patent number: 5354647
    Abstract: The invention provides a bleach fix agent comprising a dilute solution of an alkaline metal or ammonium thiosulphite or a mixture thereof and iron (III) EDTA together with a soluble sulphite. The invention is characterized in that the soluble sulphite is present in an excess of the amount required for stabilization whereby the sulphite can be sacrificially destroyed by oxidizing agents in use thereby to neutralize the oxidizing effects upon the thiosulphate. The invention is particularly suitable for "RX" processes and results in the possibility of eliminating the stop-bath without allowing staining of the photographic material to occur.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: October 11, 1994
    Assignee: Eastman Kodak Company
    Inventor: John R. Fyson
  • Patent number: 5348845
    Abstract: Disclosed is a color image-stabilization processing solution for a silver halide color photographic material containing at least one of (a) an N-methylol compound represented by the following formula (I): ##STR1## wherein X represents a group of non-metallic atoms necessary to form a 1H-pyrazole ring or 1H-1,2,4-triazole ring together with the nitrogen atom;and (b) an N-methylol compound satisfying the condition that an equilibrium constant in water at room temperature is 2.times.10.sup.-2 mol/liter or less and a formaldehyde-releasing rate constant is 1.times.10.sup.-5 sec.sup.-1 or more. This solution permits one to dispense formaldehyde and its attendant risks. Also disclosed is a method for processing silver halide color photographic materials using such a solution.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: September 20, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Hiroshi Kawamoto, Yoshihiro Fujita, Shigeru Nakamura, Hiroyuki Watanabe, Morio Yagihara
  • Patent number: 5344749
    Abstract: The synthesis and the application of new dyes is described, said new dyes being incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolorized in alkaline aqueous liquids used in the processing of said materials. The filter dyes have an amide function or a derivative therefrom as a substituent at the mono- or trimethine chain.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: September 6, 1994
    Assignee: AGFA-Gevaert, N.R.
    Inventors: Eric Kiekens, Paul Callant