Silver Bleach Or Bleach-fix Patents (Class 430/393)
  • Patent number: 5176988
    Abstract: A bleaching starter which contains an imidazole or a primary or secondary amine having a hydroxyalkyl radical as an alkaline agent which exhibits an improved desilvering function without odor and safety problems, the alkaline agent is selected from compounds represented by formulae (I) and (II): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from the group consisting of a hydrogen atom, an alkyl radical, and an alkenyl radical, R.sub.5 is a hydroxyalkyl radical having up to 6 carbon atoms, and R.sub.6 is selected from group consisting of a hydrogen atom, an alkyl radical having up to 6 carbon atoms, and a hydroxyalkyl radical having up to 6 carbon atoms.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: January 5, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Shigeru Nakamura
  • Patent number: 5173394
    Abstract: A method for continuously processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, comprising the steps of developing with a color developer, bleaching with a processing bath having a bleaching ability comprising a bleaching agent in a concentration of at least 0.15 mol/liter, water washing and/or stabilizing with at least two sequential processing tanks, and drying the thus processed photographic material, wherein the equilibrium iron concentration of the processing solution in the tank immediately preceding the final tank of the water washing and/or stabilizing step is from 100 to 500 ppm and the equilibrium iron concentration is at least seven times that of the processing solution in the final tank of the water washing and/or stabilizing step, and the time from the start of the bleaching step to the completion of the water washing and/or stabilizing step is not more than 65 seconds.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: December 22, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroshi Hayashi
  • 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: 5169743
    Abstract: A method for processing a silver halide color photographic photosensitive material which comprises subjecting an imagewise exposed silver halide color photographic photosensitive material to color development process followed by bleach-fixing process and water washing and/or stabilization process. This method is characterized in that pH of the bleach-fixing solution ranges from 3.5 to 5.5 and the amount of replenished liquid for washing water and/or stabilization solution is 3 to 50 times the volume of liquid carried over from the bath preceding the water washing and/or the stabilization bath.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: December 8, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takatoshi Ishikawa
  • Patent number: 5149618
    Abstract: The process for bleach fixing an exposed and developed color photographic material whose silver halide emulsion layers contain silver chlorobromide emulsions having a silver bromide content of from 0.3 to 2.0 mol%, in which the bleach fixing bath (1) contains, as bleaching agent, an iron(III) complex at least 50 mol% of whose complex former corresponds to the following formula ##STR1## (2) is adjusted to a pH of x where 7.0>.times.>4.5 and (3) contains a thiosulphateis distinguished by a powerful bleaching action and great environmental compatibility.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: September 22, 1992
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Gustav Tappe, Ralf Wichmann, Heinz Meckl, Edgar Draber
  • 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: 5139929
    Abstract: A method for processing an exposed silver halide color photographic material comprising the steps of:(a) color developing an exposed silver halide color photographic material;(b) bleach-fixing said developed material;(c) at least one of washing said bleach-fixed material with water and stabilizing said bleach-fixed material;(d) regenerating a portion of a solution from said step (b) for bleach-fixing to form a replenisher solution comprising at least a carbonyl bisulfite adduct; and(e) replenishing at least one solution in said bleach-fixing step (b) with said replenisher solution from step (d).
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: August 18, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Shinji Ueda
  • Patent number: 5124239
    Abstract: The present invention relates to a method in which water for preventing the concentration of processing solution in a processing tank from being increased due to evaporation and a replenisher for avoiding a lowering of the effectiveness of the processing solution are added to the processing tank of a photographic processing apparatus. Before the processing tank is replenished with a replenisher, the processing tank is replenished with water by an amount corresponding to the amount of water evaporated therefrom until the liquid surface level reaches the original liquid surface level i.e. replacing evaporated water, and then, the processing tank is replenished with replenisher. Thereafter, the processing solution is discharged by an amount equal to the amount of replenisher added in order to return the liquid surface level to the original liquid surface level. Thus, the performance of the processing solution can be restored while the concentration of the processing solution is kept constant.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: June 23, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Chuji Tsukada
  • 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: 5118594
    Abstract: This invention relates to novel photographic dye-forming coupler compounds which are non-diffusible as incorporated in a photographic element, but which, during processing, are converted to a form which is removable from the element if the coupler compound has not reacted with oxidized silver halide color developing agent.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: June 2, 1992
    Assignee: Eastman Kodak Company
    Inventors: Gregory J. Lestina, Jon D. Bass, John W. Harder, Stephen P. Singer
  • Patent number: 5118596
    Abstract: A silver halide color photographic material is disclosed, comprising a support having thereon at least one silver halide emulsion layer, which contains at least one compound represented by formula (I) in the silver halide emulsion layer or in a light-insensitive hydrophilic colloid layer: ##STR1## wherein X represents a divalent linking group connected to the carbon atom through a hetero atom in X;Z represents a bleach accelerating agent moiety connected to X through a hetero atom in Z;W represents .dbd.N-- or ##STR2## (wherein Y represents a hydrogen atom or another substituent); A represents an atomic group necessary to form an aromatic heterocyclic ring containing 3 or more hetero atoms, provided that when W represents ##STR3## the group adjacent to W is a group except for ##STR4## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: June 2, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tetunori Matushita
  • Patent number: 5114835
    Abstract: A process for processing an imagewise exposed silver halide color photographic material with a processing solution having a bleaching ability after color development is disclosed, in which the silver halide color photographic material contains at least one compound capable of reacting with an oxidation product of a developing agent upon development to release a bleaching accelerator, and the processing solution having a bleaching ability contains (1) at least one ferric complex salt of a compound selected from the compound group (A) and (2) ferric complex salt of 1,3-diaminopropanetetraacetic acid as bleaching agents in such proportion that the molar ratio of the (1) to the (2) is 3 or less: compound group (A):A-1; ethylenediaminetetraacetic acidA-2; diethylenetriaminepentaacetic acidA-3; cyclohexanediaminetetraacetic acidA-4; 1,2-propylenediaminetetraacetic acid.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 19, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kei Sakanoue
  • 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: 5104774
    Abstract: An image forming method comprising imagewise exposure and color development of a multilayer silver halide color photographic material comprising a support having thereon at least one silver halide light-sensitive emulsion layer containing at least one oil-soluble coupler which is capable of forming a substantially non-diffusible cyan dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is represented by formula (I), and at least one compound selected from the group consisting of compounds represented by formula (II) or (III) followed by the processing of the multilayer silver halide color photographic material with at least one of a bleaching solution and bleach-fixing solution each having a pH of not higher than 6.3, wherein formula (I), (II) and (III) comprise ##STR1## wherein Y represents --NHCO-- or --CONH--; R.sub.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: April 14, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobutaka Ohki, Hiroyuki Yoneyama
  • Patent number: 5104775
    Abstract: In a method for processing at least 2 kinds of silver halide color photographic light-sensitive materials comprising the steps of development, bleach-fixing, water washing and/or stabilization, the method comprises processing, in a common bleach-fixing bath and a common water washing or stabilization bath directly subsequent thereto, one silver halide color photographic light sensitive material having, applied to a substrate, a silver halide emulsion layer which contains, on average, not less than 3 mole % of silver iodide and another silver halide color photographic light sensitive material having applied to a substrate a silver halide emulsion layer which is substantially free of silver iodide, the water washing or stabilization bath containing at least one nonionic surfactant. The amount of replenisher for the bleach-fixing bath and the water washing or stabilizing bath is reduced to not more than 400 ml/m.sup.2 for color paper or not more than 800 m1/m.sup.2 for color negative film.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: April 14, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Shinji Ueda, Toshihiro Nishikawa
  • Patent number: 5102778
    Abstract: A method for processing a silver halide light-sensitive material comprising subjecting an imagewise exposed silver halide color light-sensitive material having a silver chloride content substantially of 90 mol % or more to color developement in a color developing solution containing a hydrophilic p-phenylenediamine derivative and substantially no benzyl alcohol at a temperature of 30.degree. C. or higher for a period of 15 seconds or less and then subjecting the color developed material to bleach or bleach-fix, wherein the color development processed silver halide color light-sensitive material is introduced into a bleaching or bleach-fix bath with the amount of a color developing agent in the film of the light-sensitive material being controlled to 0.8 mmol/m.sup.2 or less, and wherein the desilvering is completed within 30 seconds.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: April 7, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Koichi 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: 5075202
    Abstract: A method of processing a light-sensitive silver halide color photographic material which comprises subjecting to imagewise exposure a light-sensitive silver halide color photographic material having a light-sensitive silver halide emulsion layer on i) a substrate coated with a resin cured by irradiation with electron beams or ii) one side or both sides of a substrate of an opaque thermoplastic resin film comprising a synthetic polyester film coated on its one side or both sides with fine particles of white pigment and/or a synthetic polyester film containing said fine particles dispersed in the film and applied with molecular orientation, followed by color developing processing and, after processing by use of processing solution having fixing ability, stabilizing processing without substantially any water washing step. The concentration of silver complex ions in the final stabilizing tank is in the range of 2.times.10.sup.-5 to 2.times.10.sup.-1 mole/liter.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: December 24, 1991
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shigeharu Koboshi, Kazuhiro Kobayashi, Satoru Kuse
  • Patent number: 5070004
    Abstract: A bleaching starter which contains an imidazole or a primary or secondary amine having a hydroxyalkyl radical as an alkaline agent exhibits an improved desilvering function without odor and safety problems.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: December 3, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, 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: 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: 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: 5064750
    Abstract: The invention discloses an improved method for processing a silver halide color photographic material wherein said material is imagewise exposed and then processed. The improvement comprises the use of a particular naphthol amido coupler together with a bleaching bath containing (diaminopropanetetraacetatoiron) (III) complex salt at a particular pH.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: November 12, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hideki Naito
  • Patent number: 5063142
    Abstract: A process for processing a silver halide color photographic material is disclosed, which comprises color developing and bleach-fixing the silver halide color photographic material, and then processing by at least one of washing the material with water and stabilizing the material, the silver halide color photographic material comprising a support having thereon at least one emulsion layer comprising a high silver chloride emulsion having a silver chloride content of 80 mol % or more and a used bleach-fixing solution which has been already used for the bleach-fixing, having a silver ion concentration of 0.02 mol/liter or more being used as a bleach-fixing solution for replenishment.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: November 5, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takatoshi Ishikawa
  • Patent number: 5063140
    Abstract: A method for forming color photographic images is disclosed. The method comprises steps ofimagewise exposing to light a silver halide color photographic light-sensitive materialdeveloping the light-sensitive material with a color developer,bleaching, immediately after the step of developing, the light-sensitive material with a bleacing solution, andtreating the bleached light-sensitive material with a solution having fixing capablility, whereinthe light-sensitive material comprises a support and hydrophilic colloid layers including a silver halide emulsion layer provided on a side of the support, and a total dry thickness of the hydrophilic colloid layers is not more than 17 .mu.m, andthe bleaching solution contains a ferric complex salt of a compound represented by the following formula in an amount of within the range of from 0.002 mole to 9.4 mole per liter of the bleaching solution; ##STR1## wherein A.sub.1, through A.sub.4 are each a --CH.sub.2 OH group, a --COOM, or a --PO.sub.3 M.sup.1 M.sup.2.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: November 5, 1991
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Masao Ishikawa, Shigeharu Koboshi, Minoru Ishikawa, Toshihiko Yagi
  • Patent number: 5063143
    Abstract: A process for forming a color image wherein a color photographic material is developed with a processing solution containing a solvent for the silver halide in the presence of an aromatic primary amino color devloping agent. The color photographic material comprises, on a support, at least one layer containing (1) a coupler capable of forming a dye by reaction with an oxidized aromatic primary amino color developing agent and having a dye covering power of at least 0.75 and (2) a silver chlorobromide emulsion or silver chlorobromide emulsion containing at least 90 molar % of silver chloride.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: November 5, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Akira Abe, Kiyoshi Nakazyo
  • Patent number: 5063145
    Abstract: A silver halide color photographic material, comprising at least one red-sensitive silver halide emulsion layer; at least one green-sensitive silver halide emulsion layer; and at least one blue-sensitive silver halide emulsion layer, wherein the layers are coated on a support and the photosensitive material comprises at least one compound which reacts with the oxidation products of color developing agents during development and releases a bleach accelerator, and the swelling factor of the photosensitive material in the development bath is at least 2.8.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: November 5, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Ken Sakanoue
  • Patent number: 5061608
    Abstract: An environmentally advantageous photographic bleaching solution for use in the color processing of photographic elements comprises (1) as a bleaching agent, a potassium salt of a ferric complex of an aminopolycarobxylic acid, (2) as an agent which functions to convert silver to silver halide, a potassium halide, and (3) as an agent which functions to inhibit bleach induced dye formation, a water-soluble aliphatic carboxylic acid. The bleaching solution is especially useful in the processing of photographic elements containing a low pKa, high-activity, yellow-dye-forming coupler in that it serves to effectively avoid the undesirable increase in blue D.sub.min that can occur in such elements as a result of bleach induced dye formation.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: October 29, 1991
    Assignee: Eastman Kodak Company
    Inventors: David G. Foster, Keith H. Stephen
  • Patent number: 5059514
    Abstract: The present invention relates to a method for bleaching a silver halide photographic light-sensitive material having at least one silver halide emulsion layer containing silver iodobromide after color-developing it. The object of the present invention is to speed up the bleaching treatment in the aforesaid method and to reduce the amount of waste liquor from the bleaching treatment. The present invention is characterized in that the bleaching is performed in the presence of a bleaching accelerator and that it is carried out while a bleaching solution is brought into contact with an anion-exchange resin.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: October 22, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Tetsuro Kojima, Tohru Kitahara, Tomokazu Yasuda, Yoshihiro Fujita, Takatoshi Ishikawa
  • Patent number: 5055384
    Abstract: A granulated photographic fixative or bleach fixative composed of grains containing both a thiosulphate and a disulphite is mechanically stable, dust free and freely pourable, will keep indefinitely and is distinguished by its great speed of solution.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: October 8, 1991
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventor: Peter Kuhnert
  • 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: 5053321
    Abstract: Color photographic bleaching agent containing, in the form of a granulate having an average particle diameter of from 150 to 3000 .mu.m, an iron (III) complex or an iron (III) complex salt and a rehalogenating agent is dust free and freely pourable, will keep indefinetely and dissolves in water at 25.degree. C. within 45 seconds to form a solution ready for use.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: October 1, 1991
    Assignee: AGFA Gevaert Aktiengesellschaft
    Inventor: Peter Kuhnert
  • Patent number: 5051343
    Abstract: This invention relates to novel photographic dye-forming coupler compounds which are non-diffusible as incorporated in a photographic element, but which, during processing, are converted to a form which is removable from the element if the coupler compound has not reacted with oxidized silver halide color developing agent.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: September 24, 1991
    Assignee: Eastman Kodak Company
    Inventors: Gregory J. Lestina, Jon D. Bass, John W. Harder, Stephen P. Singer
  • Patent number: 5043253
    Abstract: In a method for processing at least 2 kinds of silver halide color photographic light-sensitive materials comprising the steps of development, desilvering, water washing and/or stabilization, the method comprises processing, in a common desilvering bath, one silver halide color photographic light sensitive material having, applied to a substrate, a silver halide emulsion layer which contains, on average, not less than 3 mole % of silver iodide and another silver halide color photographic light sensitive material having, applied to a substrate, a silver halide emulsion layer which is substantially free of silver iodide, the desilvering bath containing a processing solution having bleaching ability which contains at least one stilbene type fluorescent brightener and a processing solution having fixing ability which contains iodide ions ranging from 1.times.10.sup.-4 to 1.times.10.sup.-1 mole/l.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: August 27, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takatoshi Ishikawa
  • Patent number: 5039597
    Abstract: A method of forming a dye image suitable for a rapid process is disclosed. The method comprises the steps of,(i) imagewise exposing a light-sensitive silver halide photographic material comprising a support and provided thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, wherein said green-sensitive silver halide emulsion layer contains silver halide grains of which silver chloride content is not less than 90 mol %, and a magenta dye-forming coupler having a pKa value of not more than 8.80; and wherein the total amount of silver halide contained in said blue-sensitive, green-sensitive and red-sensitive layers being not more than 7.8 mg/dm.sup.2 in terms of silver;(ii) color developing said photographic material; and immediately after the color development,(iii) processing said photographic material with a solution having a bleaching capability and having a pH value of from 4.5 to 6.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: August 13, 1991
    Assignee: Konica Corporation
    Inventor: Toyoki Nishijima
  • Patent number: 5039599
    Abstract: A method for processing a silver halide color photographic material is disclosed, comprising imagewise exposing the material and continuously processing the material in an automatic processor wherein the bleach-fixing bath contains(i) at least one organic acid ferric complex salt, and(ii) at least one sulfinic acid, and the open area value (X) of said bleach-fixing bath and the water washing bath during the processing is not more than 0.05 cm.sup.-1.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: August 13, 1991
    Assignee: Fuji Photo Film Co., Ltd
    Inventor: Shinji Ueda
  • Patent number: 5034308
    Abstract: A method for processing silver halide photosensitive materials comprising developing an exposed silver halide photosensitive material, fixing the developed photosensitive material and then washing it with a washing water, the washing water used in the water washing process being replenished in an amount of 2 to 50 times the volume of liquid carried over by the photosensitive material from a bath preceding the water washing bath per unit area thereof, the amount of calcium and magnesium compounds present in the water washing bath being reduced to not more than 5 mg/l, respectively, on the basis of elemental calcium and magnesium and the washing water containing at least one chelating agent having a stability constant of a chelate, which is formed between the chelating agent and calcium or magnesium, of at least 6 is herein disclosed.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: July 23, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Yoshihiro Fujita, Toshio Koshimizu, Kazuhiro Aikawa
  • Patent number: 5032494
    Abstract: Disclosed is a method of processing a light-sensitive silver halide color photographic material comprising; subjecting to exposure a light-sensitive silver halide color photographic material comprising a support; a light-sensitive silver halide emulsion layer containing at least one of a core/shell silver halide grain containing 3.0 mole % or more of silver iodide and a tabular silver halide grain containing 3.0 mole % or more of silver iodide; and a compound capable of releasing at a developing processing a restrainer or restrainer precursor which forms silver salt having the solubility product with a silver ion, of 1.times.10.sup.-9 or less, and thereafter; carrying out a color developing processing by using a color developing solution containing an aromatic primary amine type color developing agent, for a period of 120 seconds or less and so as to have a value of (developed silver amount at the maximum density portion)/(total silver amount), of 0.5 or less.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: July 16, 1991
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masayuki Kurematsu, Shigeharu Koboshi, Syozo Aoki, Masahiko Kon
  • Patent number: 5011763
    Abstract: A method for processing a silver halide color photographic material is disclosed, comprising after development, bleaching or bleach-fixing an imagewise exposed silver halide color photographic material in the presence of at least one compound represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom or an alkyl group, or R.sup.1 and R.sup.2 may combine with each other to form a heterocyclic ring; A.sup.1 and A.sup.2, which may be the same or different, each represents an alkylene group having from 2 to 5 carbon atoms which may be substituted; and n represents an integer from 2 to 6.In accordance with the method of the present invention, as a result of accelerated bleaching function, the processing time is shortened while sufficient bleaching is performed, thus providing color photographic images of excellent image quality.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: April 30, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyoshi Morimoto, Yoshihiro Fujita
  • Patent number: 5009983
    Abstract: A method for processing silver halide photosensitive materials is described which includes processing an imagewise-exposed silver halide photosensitive material in a bath which has a fixing ability and then at least one of washing and stabilizing the photosensitive materials in a multi-stage counter-flow system, wherein liquid from at least one of a water washing tank and a stabilizing tank is treated using a reverse osmosis membrane and the treated liquid is recycled to at least one of the water washing tank and the stabilizing tank, and at least a tank at the stage at which the liquid is removed for the reverse osmosis membrane treatment has an open fraction of not more than 0.03.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: April 23, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akira Abe
  • Patent number: 5006456
    Abstract: A method for processing a silver halide color photographic light-sensitive material comprises the steps of developing the light-sensitive material with a color developer containing an aromatic primary amine color developing agent, desilvering, washing with water and/or stabilizing the material in which at least one processing solution used in at least one step of the processing contains at least one compound selected from the group consisting of sulfinic acids and salts and precursors thereof. This method makes it possible to effectively prevent the formation of stains due to not only the components of the light-sensitive material per se but also those attributable to the processing solutions, during processing or storage with time, and to enhance the stability of processing solutions.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: April 9, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Takatoshi Ishikawa, Kazuto Andoh, Nobuo Seto, Toshio Koshimizu, Shinji Ueda
  • Patent number: 5004677
    Abstract: A method for processing a silver halide color photographic light-sensitive material is disclosed, which comprises, after color development of an imagewise exposed silver halide color photographic material, processing the developed silver halide color photographic material with a processing solution having a bleaching ability, wherein the silver halide color photographic light-sensitive material contains at least one DIR coupler having at its coupling active position a group which forms a development inhibitor or precursor thereof when released from the coupling active position of the coupler upon a coupling reaction with an oxidation product of an aromatic primary amine color developing agent which is formed upon a color development reaction, and further decomposes into a compound having substantially no effect on photographic properties once discharged into a color developing solution wherein the half-life period of the development inhibitor or precursor thereof at pH 10.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: April 2, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shinji Ueda
  • Patent number: 5002859
    Abstract: A method for forming photographic color images is disecond closed, in which a silver halide color photographic light-sensitive material is rapidly processed with low replenishment of processing solutions. The images improved in lowered yellow stain can be obtained. The processing comprises steps of color developing, bleaching immediately after the developing step, and treating with a bath having a fixing capability following the bleaching step. The steps of bleaching and treating with a solution having a fixing capability are carried out for a time of not more than 3 minutes 45 seconds at a temperature of from 20.degree. to 45.degree. C. The light-sensitive material comprises silver halide emulsion layers each containing silver bromide and/or silver boromoiodide grains and satsifies at least one of the following requirements (1) and (2); (1) a blue light-sensitive emulsion layer included in the silver halide emulsion layers has a silver density d of not less than 4.0.times.10.sup.-1 g/cm.sup.3.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: March 26, 1991
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Masao Ishikawa, Shigeharu Koboshi, Yoshiharu Mochizuki, Kenji Kumashiro
  • Patent number: 5002860
    Abstract: A novel process for processing a silver halide color photographic material is disclosed, which comprises color-developing a silver halide color photographic material which has been imagewise exposed to light, and then processing the silver halide color photographic material with a processing solution having a bleaching ability, wherein the silver halide color photographic material comprises at least one magenta coupler represented by formula (M-1) and the processing solution having a bleaching ability comprises as a bleaching agent (1) at least one of ferric complex salts of compounds selected from Compound Group (A) and (2) a ferric 1,3-diaminopropanetetraacetate complex salt in a molar proportion of the (1) to the (2) of 3 or less:Compound Group (A)A-1: Ethylenediaminetetraacetic acidA-2: Diethylenetriaminepentaacetic acidA-3: Cyclohexanediaminetetraacetic acidA-4: 1,2-Propylenediaminetetraacetic acid ##STR1## wherein Za and Zb each represents --CH.dbd., ##STR2## or .dbd.N--; R.sub.1 and R.sub.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: March 26, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Toshio Kawagishi
  • Patent number: 5002861
    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 with a color developing solution comprising not less than 1.9.times.10.sup.-2 mol/liter of a color developing agent; and(b) desilvering said developed material with a bleaching solution comprising not less than 0.2 mol/liter of a (1,3-diaminopropanetetraacetato)iron (III) complex salt and having a pH of from 2.5 to 5.5. The method achieves rapid processing without impairing image preservability after processing.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: March 26, 1991
    Assignee: Fuji Photo Film Co. Ltd.
    Inventors: Kiyoshi Nakazyo, Yoshihiro Fujita
  • Patent number: 5001041
    Abstract: A method for processing a silver halide color photographic material for prints comprising a color developing step, a bleach-fixing step, and either a stabilizing step or a water washing step is described, wherein the silver halide color photographic material comprises a reflective support having thereon at least one silver halide emulsion layer containing a silver halide having a silver chloride content of not less than 90 mol % and substantially not containing silver iodide, and the color developing step is conducted using a processing solution that does not substantially contain benzyl alcohol.According to the method of the present invention, the amount of water required in a water washing step or a stabilizing step can be greatly reduced without decreasing liquid stability of the water for washing or the stabilizing solution, and color prints having improved preservability are obtained.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: March 19, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Shinji Ueda, Kiyoshi Nakazyo
  • Patent number: 4987058
    Abstract: A processing method without washing gives good photographic properties, without a precipitate being deposited in the stabilizing bath, when the bleach-fixing bath contains a compound of the formulaFe(X).sub.2 DTPA,whereinX denotes alkali or ammonium,as bleaching agent, and the stabilizing bath contains a fungicide, HEDP and a hexametaphosphate.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: January 22, 1991
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Erika Spriewald, Gustav Tappe, Heinz Meckl
  • Patent number: 4985347
    Abstract: A method for processing silver halide color photographic material is disclosed which comprises processing a silver halide color photographic material with a color developer containing substantially no sulfite ion and then processing the color photographic material with a solution having bleaching capability containing an aminopolycarboxylic acid having a molecular weight of at least 300.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: January 15, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Fujimoto, Morio Yagihara, Takatoshi Ishikawa
  • Patent number: 4983503
    Abstract: There are disclosed a method for processing a light-sensitive silver halide color photographic material by subjecting a light-sensitive silver halide color photographic material after color developing to bleach-fixing processing, characterized in that the light-sensitive silver halide color photographic material contains at least one cyan coupler represented by the formula (A), (B) or (C) as specified in the specification, or contains at least one magenta coupler represented by the formula (M-1), the bleach-fixing processing step is a step which is a counter-current system uses two or more tanks of continuous bleach-fixing tanks, and the silver concentration in the bleach-fixing solution in a final tank of the bleach-fixing tanks is maintained at 80% or lower of the silver concentration in a bleach-fixing solution in a first tank, and a method for processing a light-sensitive silver halide color photographic material by subjecting a light-sensitive silver halide color photographic material after color develop
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: January 8, 1991
    Assignee: Konica Corporation
    Inventors: Masao Ishikawa, Shigeharu Koboshi, Satoru Kuse, Masayuki Kurematsu
  • 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