Fixer Patents (Class 430/455)
  • Patent number: 8278189
    Abstract: The present invention provides a method of thinning a wafer. First, a wafer is provided. The wafer includes an active surface, a back surface and a side surface. The active surface is disposed opposite to the back surface. The side surface is disposed between the active surface and the back surface and encompasses the peripheral of the wafer. Next, a protective structure is formed on the wafer to at least completely cover the side surface. Last, a thinning process is performed upon the wafer from the back surface.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: October 2, 2012
    Assignee: United Microelectronics Corp.
    Inventor: Cheng-Yu Hsieh
  • Patent number: 7351522
    Abstract: An object of the present invention is to provide a method of processing silver halide color paper that ensures (a) promptness such that finished prints can be handed at shop to customers, (b) small installation area for mini-labs, (c) processing solution stability capable of withstanding slack seasons, (d) normal image quality, (e) small replenishment solution amount and (f) inhibition of tar generation and sulfuration phenomenon occurrence. This object can be attained by a concentrated processing composition for color paper which has a concentrated processing composition for bleach replenishment of 3.0 or less in pH containing 0.3 mol/L or more of EDTA.Fe(III) ammonium, 0.3 mol/L or more of a sulfinic acid compound of specified structure and 0.5 mol/L or more of ammonium bromide and a concentrated processing composition for fixative replenishment of 4.0 or more in pH containing 0.7 mol/L of ammonium thiosulfate and 0.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: April 1, 2008
    Assignee: Fujifilm Corporation
    Inventor: Kazuaki Yoshida
  • Patent number: 7147996
    Abstract: Photographic silver halide materials containing an incorporated black-and-white developing agent can be quickly and simply processed using unique processing compositions and methods. In a “two-step” method, the exposed material is contacted with an alkaline activator solution followed by a fixing composition. In a “one-step” method, activation and fixing are combined using a single alkaline activator-fixing composition containing the fixing agent. None of the processing solutions include black-and-white developing agents. The photographic silver halide materials are preferably radiographic silver halide materials that have a reflective support and provide black-and-white images that can be viewed without a light box.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: December 12, 2006
    Assignee: Eastman Kodak Company
    Inventors: Alan S. Fitterman, Robert E. Dickerson, Kenneth A. Duke
  • Patent number: 7108962
    Abstract: A photographic processing composition, containing at least one compound of formula (I) or (II): A1-X-L-Y-A2??(I) wherein A1 and A2 each are a specific aryl or aromatic heterocyclic group; L is a specific arylene or divalent aromatic heterocyclic group; X and Y each are a specific divalent group; the compound of (I) contains at least two of —SO3M or —CO2M, but not contains —N?N— or —SH; M is a hydrogen, alkali or alkali earth metal, ammonium, or pyridinium; wherein A11 is a specific tri- or tetra-valent aromatic hydrocarbon or aromatic heterocyclic group; A12 is an aryl or aromatic heterocyclic group; X1 is a divalent group; M1 is a hydrogen, alkali or alkali earth metal, ammonium, or pyridinium; the molecule of (II) does not contain —N?N— or —SH; n is 3 or 4; r and s each are 0 to 10, (r+s) is 2 or more.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: September 19, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Suzuki, Yasufimi Nakai
  • Patent number: 6905813
    Abstract: Processing with adding either of the following compounds (a), (b) and (c) to a bleaching and fixing processing solution is performed. (a) at least one selected from a group having a structure represented by a general formula [I] as described below; (b) at least one of an aminopyridine-type compound with acid dissociation constant (pKa) thereof is in the range of 5.5 to 8.5; (c) at least one of a polyethyleneimines having a structure represented by the following general formula [II].
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: June 14, 2005
    Assignee: Chugai Photo Chemical Co., Ltd.
    Inventor: Hiroyuki Habu
  • Patent number: 6838233
    Abstract: A method of processing photographic color papers is carried out using a photographic bleach-fixing composition in a bleach-fixing step that is carried out for less than 60 seconds. The bleach-fixing composition comprises certain aliphatic or aromatic sulfur-containing compounds that include a —N?C(SH)— group. The bleach-fixing composition can be prepared from a two-part bleach-fixing kit having two solutions that can be added directly to a processing chamber or premixed to form a replenisher solution.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: January 4, 2005
    Assignee: Eastman Kodak Company
    Inventors: Paul A. Schwartz, Valerie L. Kuykendall, Eric R. Schmittou, Leif P. Olson, Susan M. Flavin
  • Publication number: 20040175661
    Abstract: In order to provide a granular solid processing agent capable of avoiding consolidation among its constituent granules even when the granules sustain some damage by vibrations during transportation or/and are placed under high humidity conditions, and thereby maintaining qualities in the solid processing agent, and a method of producing such a granular solid processing agent, disclosed are solid processing agents for silver halide photosensitive materials, which each have granules containing an organic acid whose ammonium salt has a critical relative humidity of at least 70% RH, particularly the solid processing agents for silver halide photosensitive materials whose granules are core-shell granules containing the organic acids in their individual shell layers.
    Type: Application
    Filed: March 1, 2004
    Publication date: September 9, 2004
    Inventor: Hideaki Nomura
  • Patent number: 6653060
    Abstract: 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: Grant
    Filed: December 6, 2000
    Date of Patent: November 25, 2003
    Assignee: Konica Corporation
    Inventor: Shoji Nishio
  • Patent number: 6638697
    Abstract: A method of processing a silver halide color photographic material comprises the steps of color-developing an image-wise exposed silver halide color photographic material and subjecting the developed material to desilvering in a processing bath having a fixing function and containing a thiosulfate compound and the following compound or analogue thereof in a molar ratio of 1/0.05 to 1/0.30. In this process, the fixing speed is extremely high even when the replenishing rate is low and the processed photosensitive material has an excellent resistance to fading by light.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: October 28, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Tetsuro Kojima, Masaru Yoshikawa
  • Publication number: 20030198902
    Abstract: A photographic processing composition, containing at least one compound of formula (I) or (II):
    Type: Application
    Filed: January 24, 2003
    Publication date: October 23, 2003
    Inventors: Makoto Suzuki, Yasufimi Nakai
  • Publication number: 20030157444
    Abstract: Processing with adding either of the following compounds (a), (b) and (c) to a bleaching and fixing processing solution is performed.
    Type: Application
    Filed: August 27, 2002
    Publication date: August 21, 2003
    Inventor: Hiroyuki Habu
  • Publication number: 20030148231
    Abstract: A process for removing stain in a photographic material is described which process comprises incorporation of at least one compound of the formula (I) 1
    Type: Application
    Filed: November 20, 2002
    Publication date: August 7, 2003
    Inventors: Christophe Bulliard, Georges Metzger, Sonia Megert
  • Patent number: 6541190
    Abstract: A photographic fixing composition has reduced odor and improved storage stability. It comprises a thiosulfate fixing agent, sulfite ions, and a phthalic acid or salt thereof. This fixing composition can be used in various photographic processing protocols to provide color images from color photographic silver halide materials.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: April 1, 2003
    Assignee: Eastman Kodak Company
    Inventors: Shirleyanne E. Haye, Janet M. Huston, Therese M. Feller, Eric R. Schmittou
  • Publication number: 20030054298
    Abstract: A photographic processing composition for silver halide color photographic lightsensitive material, comprising at least one compound represented by the formula (I):
    Type: Application
    Filed: March 29, 2002
    Publication date: March 20, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Makoto Suzuki, Yasufumi Nakai, Yoshiharu Yabuki
  • Publication number: 20020192604
    Abstract: A method of processing a silver halide color photographic material comprises the steps of color-developing an image-wise exposed silver halide color photographic material and subjecting the developed material to desilvering in a processing bath having a fixing function and containing a thiosulfate compound and the following compound or analogue thereof in a molar ratio of 1/0.05 to 1/0.30. In this process, the fixing speed is extremely high even when the replenishing rate is low and the processed photosensitive material has an excellent resistance to fading by light.
    Type: Application
    Filed: November 9, 1995
    Publication date: December 19, 2002
    Inventors: TAKATOSHI ISHIKAWA, TETSURO KOJIMA, MASARU YOSHIKAWA
  • Patent number: 6440653
    Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprises developing the material with a developer solution containing a silver halide developing agent, applying to the surface of the developed material a solution of a sulphite compound that reacts with oxidised developing agent and prevents further development, and applying to the surface of the developed material a solution of an oxidant that oxidises any remaining developing agent, wherein said sulphite compound is present in an amount sufficient to react with all the oxidised developing agent and said solutions of sulphite and oxidant are applied to the material by means other than immersion in a tank.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: August 27, 2002
    Assignee: Eastman Kodak Company
    Inventors: John R. Fyson, Louis E. Friedrich
  • Patent number: 6420012
    Abstract: A toner carrier which carries a toner in the form of thin film on its surface, comes close to or comes into contact with the image-forming body so as to supply the toner to the surface of the image-forming body, thereby forming a visible image on the surface of the image-forming body, said toner carrier being characterized in that its conductive elastic layer has a coating layer thereon which is made of a material containing a resin with a glass transition point lower than 10° C. and has a dynamic elastic modulus (E′) of 107-109.8 dyn/cm2 and a loss tangent (tan &dgr;) smaller than 0.7. A toner carrier in which the electrically conductive elastic layer is formed from an elastic material having a tear strength greater than 10 kg/cm measured according to JIS K6252.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: July 16, 2002
    Assignee: Bridgestone Corporation
    Inventors: Koji Takagi, Toshiaki Arai, Takao Ohuchi, Tokuo Okada
  • Patent number: 6406838
    Abstract: The present invention provides an overcoat for a photographic element that allows for appropriate diffusion of photographic processing solutions. The overcoat comprises 10 to 50% by weight of a enzyme-degradable biopolymer and 50 to 90% by weight of hydrophobic particles (by weight of dry laydown of the entire overcoat). An enzyme is applied to the element before, during, or after conventional photoprocessing. According to one embodiment of the invention, the photographic element can be exposed and processed using normal photofinishing equipment, with no modifications, to provide an imaged element together with a protective, water-resistant layer.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: June 18, 2002
    Assignee: Eastman Kodak Company
    Inventors: Thomas H. Whitesides, Amy Jasek, Hwei-Ling Yau, Jill E. Fornalik
  • Patent number: 6350562
    Abstract: A concentrated fixing solution which includes at least a thiosulfate, a water-soluble aluminum salt, and a compound having an absorbance of from 0.25 to 1.15 by a prescribed colorimetric method, and does not substantially contain a boron compound is disclosed. A method for processing a silver halide photographic material by using the concentrated fixing solution is also described.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: February 26, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Harumi Watanabe, Minoru Yamada, Mitsunori Hirano, Hisashi Okada
  • Publication number: 20020015922
    Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprises
    Type: Application
    Filed: May 10, 2001
    Publication date: February 7, 2002
    Applicant: Eastman Kodak Company
    Inventors: John R. Fyson, Gareth B. Evans, Peter Hewitson, Jon A. Kapecki
  • Patent number: 6340560
    Abstract: 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: Grant
    Filed: October 7, 1998
    Date of Patent: January 22, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Inaba, Kiyoshi Morimoto, Shigeo Hirano
  • Publication number: 20020001782
    Abstract: A concentrated fixing solution which includes at least a thiosulfate, a water-soluble aluminum salt, and a compound having an absorbance of from 0.25 to 1.15 by a prescribed colorimetric method, and does not substantially contain a boron compound is disclosed. A method for processing a silver halide photographic material by using the concentrated fixing solution is also described.
    Type: Application
    Filed: March 18, 1996
    Publication date: January 3, 2002
    Applicant: FUJI PHOTO FILM CO., LTD
    Inventors: HARUMI WATANABE, MINORU YAMADA, MITSUNORI HIRANO, HISASHI OKADA
  • Publication number: 20010031432
    Abstract: A processing composition for a silver halide photographic material, which comprises at least one compound selected from the group consisting of compounds represented by the following general formulae (I) and (II): 1
    Type: Application
    Filed: January 29, 2001
    Publication date: October 18, 2001
    Inventors: Yasufumi Nakai, Keizo Kimura, Shigeaki Tanaka, Yoshiharu Yabuki
  • Publication number: 20010026908
    Abstract: 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.
    Type: Application
    Filed: December 6, 2000
    Publication date: October 4, 2001
    Inventor: Shoji Nishio
  • Patent number: 6258520
    Abstract: The present invention relates to imaging elements, including photographic elements and recording media, having a protective overcoat that resists fingerprints, common stains, and spills. More particularly, the present invention provides a processing-solution-permeable protective overcoat that is water resistant in the final processed product. The overcoat, before formation of the image, comprises hydrophobic polymeric particles in a gelatin matrix. Subsequent treatment of the overcoat, after formation of the image, to remove the gelatin, causes coalescence of the hydrophobic particles, resulting in the formation of a water-resistant continuous protective overcoat.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: July 10, 2001
    Assignee: Eastman Kodak Company
    Inventors: Hwei-Ling Yau, Thomas H. Whitesides, Elmer C. Flood, Amy E. Jasek
  • Publication number: 20010004514
    Abstract: Specific aromatic compounds having an extended planar &pgr; system are useful as spectral sensitizing dye stain reducing agents in photographic processing compositions and methods for providing color or black-and-white images in various photographic silver halide materials. These compounds are devoid of diaminostilbene fragments or fused triazole nuclei. They are particularly useful in fixing and bleaching compositions in the processing of color photographic silver halide materials, but can also be used in various other processing compositions.
    Type: Application
    Filed: February 1, 2001
    Publication date: June 21, 2001
    Inventors: Ramanuj Goswami, Mary E. Craver, Harry J. Price
  • Patent number: 6197483
    Abstract: Color photographic silver halide materials, especially color photographic papers, are processed effectively with reduced iron retention after bleaching with a biodegradable bleaching composition. Bleaching is accomplished using an iron chelate of a biodegradable chelating ligand in the presence of a polyphosphonic acid. This bleaching step is followed by fixing using a fixing composition that includes a fixing agent and a polycarboxylic acid.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Carl A. Marrese, Alaine M. Gray, David G. Foster
  • Patent number: 6153364
    Abstract: Specific aromatic compounds having an extended planar .pi. system are useful as spectral sensitizing dye stain reducing agents in photographic processing compositions and methods for providing color or black-and-white images in various photographic silver halide materials. These compounds are devoid of diaminostilbene fragments or fused triazole nuclei. They are particularly useful in fixing and bleaching compositions in the processing of color photographic silver halide materials, but can be used in various other processing compositions.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: November 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Harry J. Price, Mary E. Craver
  • Patent number: 6153365
    Abstract: Specific aromatic compounds having an extended planar .pi. system are useful as spectral sensitizing dye stain reducing agents in photographic processing compositions and methods for providing color or black-and-white images in various photographic silver halide materials. These compounds are devoid of diaminostilbene fragments or fused triazole nuclei. They are particularly useful in fixing and bleaching compositions in the processing of color photographic silver halide materials, but can also be used in various other processing compositions.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: November 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Mary E. Craver, Harry J. Price
  • Patent number: 6110655
    Abstract: Low silver black-and-white photographic elements, such as radiographic films, can be processed quickly using black-and-white developing and fixing compositions having reduced photoprocessing activity. The entire process is fairly rapid and effective despite the lowered concentrations of photographic developing and fixing agents. The processing compositions are more environmentally friendly because the conventional hydroquinone is replaced with an ascorbic acid developing agent. In addition, the processing compositions are free of ammonium ions.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: August 29, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alan S. Fitterman, Robert E. Dickerson
  • Patent number: 6107012
    Abstract: Low silver black-and-white photographic elements, such as radiographic films, can be processed quickly using a two-stage process in which black-and-white development is carried out in the first stage for up to 30 seconds, and such development continues along with fixing in the second stage for up to 60 seconds when a fixing composition is added. Both stages are carried out in the same processing container.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: August 22, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alan S. Fitterman, Robert E. Dickerson
  • Patent number: 6087077
    Abstract: Color photographic silver halide elements, such as color films, can be rapidly fixed using a fixing composition containing a thiosulfate fixing agent, and certain 1,3-thiazolidine-2-thiones. Each of the components is present in specific amounts to effect rapid and efficient desilvering. The composition also includes predominantly ammonium cations (at least 50 mol %). Besides effective and rapid silver removal (less than 60 seconds), the fixing composition also minimizes residual dye stain from sensitizing dye aggregates within the photographic elements.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: July 11, 2000
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, David G. Foster
  • Patent number: 6083672
    Abstract: A method of processing an exposed black-and-white silver halide light-sensitive photographic material has been disclosed, said method comprising the steps of developing in a developer solution, followed by fixing in a fixer solution, comprising a hardening agent, preferably a compound providing aluminum ions, and wherein, in running equilibrium conditions, said fixer solution has a pH of at least 4.3, further adding to said fixer a fixer replenisher at a rate of from 0 ml/m.sup.2 up to 300 ml/m.sup.2 ; followed by rinsing and drying, wherein rinsing between developing and fixing is excluded and wherein an .alpha.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: July 4, 2000
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Andre Roefs, Benedictus Jansen, Frank Michiels
  • Patent number: 6083668
    Abstract: Disclosed is a processing element which includes a silver halide solvent represented by a general formula (1) and which has a function of efficiently fixing undeveloped silver halide remaining in a photosensitive element after developing without any harmful influence, and an image-forming method using the processing element, the general formula (1) being ##STR1## wherein R.sub.1 and R.sub.2 each represent an aliphatic hydrocarbon group.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: July 4, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiko Matsumoto, Masaru Yoshikawa
  • Patent number: 6022676
    Abstract: Color photographic silver halide elements, such as color films, can be rapidly fixed using a fixing composition containing a mixture of thiosulfate and thiocyanate fixing agents in specific amounts and molar ratio. The composition also includes predominantly ammonium cations (at least 55 mol %). Besides effective and rapid silver removal (up to 60 seconds), the fixing composition also minimizes residual dye stain from sensitizing dye aggregates within the photographic elements.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: February 8, 2000
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, David G. Foster
  • Patent number: 6013422
    Abstract: Color reversal photographic elements can be effectively processed to provide color positive images using biodegradable bleaching compositions when the following fixing compositions contain an uncomplexed aminodisuccinic acid additive. The presence of the additive in the fixing composition seems to reduce the retained iron from use of the biodegradable bleaching composition, thereby reducing yellow stain and other undesirable effects in the color images, and iron precipitates in the fixing bath.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: January 11, 2000
    Assignee: Eastman Kodak Company
    Inventor: Harry J. Price
  • Patent number: 6013424
    Abstract: Color photographic silver halide elements, such as color films, can be rapidly fixed using a fixing composition containing a thiosulfate fixing agent, and certain aminoalkyl- and sulfur-substituted 1,2,4-triazoles. Each of the components is present in specific amounts to effect rapid and efficient desilvering. The composition also includes predominantly ammonium cations (at least 50 mol %). Besides effective and rapid silver removal (less than 60 seconds), the fixing composition also minimizes residual dye stain from sensitizing dye aggregates within the photographic elements.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: January 11, 2000
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, David G. Foster
  • Patent number: 6013425
    Abstract: Concentrated and working strength photographic fixing compositions include a photographic fixing agent, a triazinylstilbene compound, and a water-soluble stabilizing compound that has a molecular weight of less than 200, from 2 to 10 carbon atoms, and at least two amino or hydroxy functional groups. The triazinylstilbene is provided in a concentrated fixer additive composition in a mixture with the stabilizing compound. The fixing compositions also include predominantly ammonium ions, and can be used to provide images in color photographic materials, and particularly in color reversal films, with reduced residual sensitizing dye stain.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: January 11, 2000
    Assignee: Eastman Kodak Company
    Inventors: Mary E. Craver, Jean M. Buongiorne
  • Patent number: 6007972
    Abstract: Color photographic silver halide elements, such as color films, can be rapidly fixed using a fixing composition containing a thiosulfate fixing agent, and certain sulfur-substituted oxadiazoles (that is oxadiazolethiones). Each of the components is present in specific amounts to effect rapid and efficient desilvering. The composition also includes predominantly ammonium cations (at least 50 mol %). Besides effective and rapid silver removal (less than 60 seconds), the fixing composition also minimizes residual dye stain from sensitizing dye aggregates within the photographic elements.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: December 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: Eric R. Schmittou, David G. Foster
  • Patent number: 6001545
    Abstract: Color photographic silver halide elements, such as color films, can be rapidly fixed using a fixing composition containing a mixture of thiosulfate and thiocyanate fixing agents, and certain sulfur-containing 1,2,4-triazoles. Each of the components is present in specific amounts to effect rapid and efficient desilvering. The composition also includes predominantly ammonium cations (at least 50 mol %). Besides effective and rapid silver removal (up to 50 seconds), the fixing composition also minimizes residual dye stain from sensitizing dye aggregates within the photographic elements.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: December 14, 1999
    Assignee: Eastman Kodak Company
    Inventors: David G. Foster, Eric R. Schmittou
  • Patent number: 5972577
    Abstract: A processing method using an automatic processor is disclosed. The automatic processor is defined in the specification in detail. The processing is carried out employing a fixer having a salt concentration of 0.8 to 1.9 mole/l at a fixer replenisher rate of not more than 260 ml/m.sup.2.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: October 26, 1999
    Assignee: Konica Corporation
    Inventors: Hideki Komatsu, Masayuki Kurematsu, Kazuhiko Hirabayashi
  • Patent number: 5968715
    Abstract: A method for processing a silver halide photographic light-sensitive material is disclosed.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: October 19, 1999
    Assignee: Konica Corporation
    Inventors: Yutaka Ueda, Masao Ishikawa, Satoru Kuse
  • Patent number: 5968720
    Abstract: A photographic fixer compositions comprising a silver halide solvent, an aluminum salt hardening agent, a buffering agent and ammonium ions in amount of at least 0.20 mol/l, wherein said fixer composition also contains at least an aminopolycarboxylic acid sequestering agent of formula (I-a) or (I-b) or a water-soluble salt thereof and d) at least a polyphosphonic acid sequestering agent of formula (II-a), (II-b), (II-c), (II-d') or (II-d"): ##STR1## wherein the substituents are defined in the specification. The present invention also provides a method of processing an exposed photographic silver halide element comprising the steps of developing by means of a developer comprising a silver halide developing agent and treating the developed element with a fixer composition, wherein the fixer composition is one described above.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: October 19, 1999
    Assignee: Imation Corp
    Inventors: Filippo Faranda, Franco Buriano, Carlo Marchesano
  • Patent number: 5962204
    Abstract: A conditioning or bleach accelerating solution is prepared by diluting a concentrate up to 25 times. The concentrate contains a formaldehyde bisulfite precursor salt at from 200 to 600 g/l, sulfite ions at 0 to 200 g/l, a bleach accelerating agent at from 1.5 to 25 g/l, and a metal ion chelating agent present at up to 60 g/l. The concentrate is free of sodium ions.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: October 5, 1999
    Assignee: Eastman Kodak Company
    Inventors: Jean Marie Buongiorne, Michael John Haight
  • Patent number: 5932400
    Abstract: The present invention provides an odorless fixing composition for fixing silver halide photographic media. The composition includes ammonium thiosulfate as a halide solubilizing agent and a non-volatile organic acid for pH buffering. Preferably, the acid is glycolic acid, succinic acid, or a derivative thereof. In addition, the present invention provides a method for fixing silver halide photographic media by exposing the developed media to the odorless fixer composition.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: August 3, 1999
    Assignee: Varichem Corporation
    Inventors: Gary Fujii, Dewey R. Fujii
  • Patent number: 5922519
    Abstract: A method for processing a silver halide color photographic photosensitive material comprises the steps of desilverizing a photosensitive silver halide material having at least one red-sensitive layer, green-sensitive layer and blue-sensitive layer respectively on one side of a transparent support and a magnetic recording layer containing magnetic grains on the other side after the color development and then washing it with water and/or stabilizing it, wherein a bath having fixing function used in the desilverization step contains the following compound or analogue thereof. ##STR1## This method does not impair the S/N ratio of the magnetically recorded information and excellent desilverization effect can be obtained.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: July 13, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Masaru Yoshikawa, Tetsuro Kojima
  • Patent number: 5882848
    Abstract: A fixing composition for processing a silver halide photographic material comprises a fixing agent, a sulfite stabilizer, an acid and a buffer. The composition has a pH greater than 5.4 and the buffer comprises at least 2.0 mol/l ammonium acetate.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: March 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: Zoe Orr, Jeffrey K. Green
  • Patent number: 5876906
    Abstract: High silver chloride photographic materials can be processed with a process comprising two fixing steps, one before and another after a hydrogen peroxide bleaching step. The first fixing step utilizes a sulfite fixing agent.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: March 2, 1999
    Assignee: Eastman Kodak Company
    Inventors: John Richard Fyson, Gareth Bryn Evans
  • Patent number: 5866309
    Abstract: Black-and-white elements, such as radiographic films, can be handled and processed in roomlight because they include certain light absorbing dyes and desensitizers. Processing is carried out by developing the exposed element using a developing composition having a pH of less than 10. The developed elements are fixed using a fixing composition having a pH of from 10 to 11.5, and comprising specific amounts of fixing agent and sulfite to solubilize silver halide and to bleach or decompose the light absorbing dyes. The processing method is carried out quickly, usually within 120 seconds.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: February 2, 1999
    Inventors: Alan S. Fitterman, Jeffrey S. Baugher, Robert E. Dickerson
  • Patent number: 5856074
    Abstract: This invention relates to a fixing bath containing a biologically degradable complexing agent of formula I ##STR1## wherein R.sup.1-4 represents hydrogen, C.sub.1 -C.sub.10 -alkyl, hydroxy-C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy-C.sub.1 -C.sub.10 -alkyl, carboxy-C.sub.2 -C.sub.10 -alkyl, dicarboxy-C.sub.1 -C.sub.10 -alkyl, carboxy-hydroxy-C.sub.1 -C.sub.10 -alkyl, hydroxy-C.sub.1 -C.sub.5 -alkyl-(oxy-C.sub.1 -C.sub.5 -alkyl).sub.n, or C.sub.1 -C.sub.5 -alkoxy-C.sub.1 -C.sub.5 -alkyl-(oxy-C.sub.1 -C.sub.5 -alkyl).sub.n,M represents hydrogen, lithium, sodium, potassium or ammonium, andn represents 1, 2, 3 or 4,the iron(III) complex salt of which does not impede electrolytic desilverisation during the regeneration of spent fixing bath.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: January 5, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Gustav Tappe, Norman Klaunzer