Bleach Or Intensification Patents (Class 430/461)
  • 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: 5009985
    Abstract: Iron(III)-complexes of compounds of the formula ##STR1## wherein R.sub.1 denotes a substituent,m denotes 1 or 2 andn denotes 0, 1 or 2are valuable and biodegradable bleaching agents for photographic elements.
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: April 23, 1991
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Friedrich-Wilhelm Kunitz, Ralf Wichmann
  • 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: 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: 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: 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: 4975356
    Abstract: Improved bleach-accelerating compositions that are especially useful in the reversal color processing of photographic elements are comprised of a bleach-accelerating agent and a dye-stabilizing agent. Formaldehyde precursors function as particularly effective dye-stabilizing agents in such compositions. The bleach-accelerating composition is utilized subsequent to the color developing step and prior to the bleaching step and serves to enhance the effectiveness of the bleaching step and to provide improved dye stability.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: December 4, 1990
    Assignee: Eastman Kodak Company
    Inventors: Ann M. Cullinan, Paul A. Schwartz
  • Patent number: 4960682
    Abstract: Improved photographic bleaching compositions for use in the color processing of photographic elements comprise an aqueous solution containing a photographic bleaching agent, such as, for example, an ammonium or alkali metal salt of a ferric complex of an aminopolycarboxylic acid, and a dye-stabilizing amount of a formaldehyde percursor.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: October 2, 1990
    Assignee: Eastman Kodak Company
    Inventors: Ann M. Cullinan, Paul A. Schwartz
  • Patent number: 4956268
    Abstract: A two-part bleach-fixing solution composition comprising of a first concentrate composition containing a reducing compound comprising a silver halide solvent and a preservative as main components; and a second concentrate composition having a pH of 1.5 or less, containing an oxidizing compound comprising a bleaching agent and an acid as main components.The invention also relates to a method for processing a silver halide color photographic material by the steps of:(a) developing an exposed silver halide color photographic material comprising a support having thereon at least one red-sensitive silver halide emulsion layer containing at least one coupler represented by formula (I) or (II); at least one green-sensitive silver halide emulsion layer containing at least one coupler represented by formula (III) or (IV); and at least one blue-sensitive silver halide emulsion layer containing a yellow coupler represented by formula (V): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: September 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyoshi Nakazyo, Takatoshi Ishikawa, Yoshikazu Fujita
  • Patent number: 4954425
    Abstract: A method for forming an intensified color image by subjecting a silver halide color photographic material exposed imagewise to light, to color-development processing that uses a monobath development-intensifying solution containing hydrogen peroxide or a compound that releases hydrogen peroixide and a color-developing agent is disclosed. According to the color-intensifying method silver-saving can be attained using a greatly reduced amount of a processing solution.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: September 4, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Haruhiko Iwano
  • Patent number: 4945031
    Abstract: An image-forming process, which comprises subjecting a multilayer silver halide color photographic material containing, in an oil droplet dispersion in a light-sensitive layer provided on a support, at least one of the diffusion-resistant oil-soluble couplers capable of coupling with an oxidation product of an aromatic primary amine developing agent to form a substantially non-diffusible cyan dye represented by the following formula (I) and at least one member selected from the compounds represented by the following formulae (II) and (III), to imagewise exposure and color development, and then processing the multilayer silver halide photographic material with a bleaching or bleach-fixing solution having a pH of 6.3 or less: ##STR1## wherein: Y represents --NHCO-- or --CONH--;R.sub.1 represents an aliphatic group, an aromatic group, a heterocyclic group or an amino group;X represents a hydrogen atom, a halogen atom, an aliphatic group, an alkoxy group or an acylamino group;R.sub.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: July 31, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Sakai, Osamu Takahashi, Kozo Aoki
  • Patent number: 4939075
    Abstract: In the case of color materials with the usual processing times, bleaching and bleaching/fixing baths containing an iron(III) ion complex salt as bleach and, in addition, a 5- to 7-membered heterocyclic compound containing at least one N-atom and at least one other hetero atom from the group consisting of O,S,N which is substituted by --S.sup..crclbar. and, at a quaternary ring nitrogen atom, carries a positive charge arranged in such a way that no tautomeric charge compensation to a neutral thione form is possible, provide for good bleaching, i.e. for black areas free from residual silver in the case of color negative materials and for low minimum densities in the case of color reversal materials, by virtue of their excellent bleaching rate and, at the same time, their high stability.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: July 3, 1990
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Peter Bergthaller, Helmut Haseler, Heinz Meckl
  • Patent number: 4933266
    Abstract: Bleaching and bleach-fixing solutions, especially useful in the processing of a photographic color material, contain a bleaching agent comprising a ferric complex of propylenediaminetetraacetic acid and a hydroxy-substituted chelating agent present in an amount sufficient to reduce the formation of ferric propylenediaminetetraacetic acid precipitates. The solutions do not generate unacceptable stain or adversely affect leuco cyan dye recovery or process cleanliness.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: June 12, 1990
    Assignee: Eastman Kodak Company
    Inventors: Keith H. Stephen, Carol J. MacDonald
  • Patent number: 4923785
    Abstract: The one-part aqueous bleaching bath concentrate containing an ammonium iron (III) complex salt concentration of at least 0.4 mol per liter, an ammonium bromide concentration of from 1.5 to 3 mol per liter, an ammonium nitrate concentration of from 0.25 to 1 mol per liter and a pH below 3 is stable in storage.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: May 8, 1990
    Assignee: AGFA Gevaert AG
    Inventor: Karl Frank
  • Patent number: 4923784
    Abstract: Silver halide photographic elements are described containing, as a bleach accelerator precursor, a silver salt of an acid-containing, non-zwitterionic, organic thiol. The bleach accelerators are operable with a multiplicity of bleach compositions and help in reducing sensitizing dye stain.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: May 8, 1990
    Assignee: Eastman Kodak Company
    Inventors: John W. Harder, Stephen P. Singer
  • Patent number: 4921779
    Abstract: Improved bleach-accelerating compositions that are especially useful in the reversal color processing of photographic elements are comprised of a bleach-accelerating agent and a dye-stabilizing agent. Formaldehyde precursors function as particularly effective dye-stabilizing agents in such compositions. The bleach-accelerating composition is utilized subsequent to the color developing step and prior to the bleaching step and serves to enhance the effectiveness of the bleaching step and to provide improved dye stability.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: May 1, 1990
    Assignee: Eastman Kodak Company
    Inventors: Ann M. Cullinan, Paul A. Schwartz
  • Patent number: 4914008
    Abstract: There is disclosed a processing method of a light-sensitive silver halide color photographic material comprising, in a method of processing a light-sensitive silver halide color photographic material with a bleach-fixing solution after color developing, and successively with a stabilizing solution substituted for water washing, said bleach-fixing solution contains as main components an organic acid ferric complex salt with which a molecular weight of a free acid being not more than 280, a thiosulfate and a sulfite, and a processing time by said stabilizing solution substituted for water washing is 2 minutes or shorter.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: April 3, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masayuki Kurematsu, Shigeharu Koboshi
  • Patent number: 4910125
    Abstract: A method of processing an exposed silver halide color photographic material is described, comprising the steps of:(1) color developing the material, and then(2) bleaching or bleach-fixing the material using a processing solution, wherein the processing solution has a bleaching capability and contains at least ferric complex salt of an organic chelating compound represented by formula (X): ##STR1## wherein Y represents ##STR2## l, m and n each represents an integer of from 1 to 3 which may be the same or different; and r represents a hydrogen atom or a substituted or unsubstituted alkyl group having from 1 to 4 carbon atoms.
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: March 20, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Taku Haruuchi, Shinji Ueda
  • Patent number: 4894320
    Abstract: A method of processing an imagewise exposed silver halide color photographic material comprising developing the material with a color developing solution, and then processing the material with a solution having a bleaching ability, wherein the processing solution having a bleaching ability contains a ferric complex salt comprising, as a complexing agent, an aromatic compound having at least one group represented by the following general formula (I): ##STR1## wherein X represents a hydrogen atom or an organic or inorganic cation, A represents a single bond or a divalent linking group, and R represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic ring group, an acyl group, a sulfonyl group, A or --CH.sub.2 PO.sub.3 X.sub.2.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: January 16, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Masakazu Morigaki, Kozo Aoki
  • Patent number: 4880725
    Abstract: A color image is formed by imagewise exposing a color photosensitive material comprising at least a silver halide and a coupler and subjecting the material to intensified development with a processing solution containing a reducing agent and an intensifier. A substantially water-insoluble basic metal compound is previously contained in the silver halide based color photosensitive material, while the processing solution contains a compound capable of complexing reaction with the metal ion of the substantially water-insoluble basic metal compound to release a base.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: November 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Hirai, Haruhiko Iwano
  • Patent number: 4865956
    Abstract: Silver halide photographic elements are described containing, as a bleach accelerator precursor, a silver salt of a solubilized, non-primary amino thiol. The bleach accelerators are operable with a multiplicity of bleach compositions and do not deleteriously affect the sensitometric properties of the photographic element.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: September 12, 1989
    Assignee: Eastman Kodak Company
    Inventors: John W. Harder, Stephen P. Singer
  • Patent number: 4851326
    Abstract: A silver halide color photographic material having at least one silver halide emulsion layer on a reflective support is, after having been imagewise exposed, subjected to color development with a color developer which does not substantially contain benzyl alcohol and which contains a bromide ion in an amount of 4.times.10.sup.-3 mol/liter or less, for a period of time of 2 minutes or less, to obtain a color images with a high colored density. The silver halide color photographic material specifically has at least one silver chlorobromide emulsion layer which does not substantially contain silver iodide and which contains silver chloride in an amount of 50 mol % or more.In the color images thus formed by the present process, the colored density is high and the fog is less.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: July 25, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Junya Nakajima
  • Patent number: 4845017
    Abstract: A method for processing a silver halide color photographic light-sensitive material by subjecting an exposed silver halide color photographic light-sensitive material to color development, then to bleaching and fixing or then to bleach-fixing, which method comprises using a ferric ion complex salt as a bleaching agent in the bleaching or bleach-fixing and incorporating at least one compound represented by general formula (I) described below or a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a hydroxy group, a substituted or unsubstituted amino group, a carboxy group, a sulfo group or a substituted or unsubstituted alkyl group; R.sup.3 and R.sup.4 each represents a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted acyl group or R.sup.3 and R.sup.
    Type: Grant
    Filed: July 10, 1985
    Date of Patent: July 4, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Shigeru Ohno
  • Patent number: 4842994
    Abstract: A silver halide photographic material is described, comprising a support having provided thereon at least one silver halide photographic emulsion layer and comprising a bleach accelerator-releasing coupler, wherein said bleach accelerator-releasing coupler is represented by formula (I)A--(TIME).sub.n --S--X--(Y).sub.m --(Z)l]a (I)wherein A represents a coupler residual group; TIME represents a timing group; n represents 0 or 1; X represents a cyclic aliphatic group or a saturated heterocyclic group; Y represents an aliphatic group having from 1 to 8 carbon atoms which may contain a group of --O--, a group of --S--, a group of --COO--, a group of --CO--, a group of ##STR1## a group of ##STR2## a group of --SO.sub.2 --or a group of ##STR3## in its chain; m represents an integer of from 0 to 3, and when m represents 2 or more, the two or more Y groups may be the same or different; Z represents a group of --OH, a group of --COOM, a group of --SO.sub.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: June 27, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Seiji Ichijima
  • Patent number: 4839262
    Abstract: Improved bleach-accelerating compositions that are especially useful in the reversal color processing of photographic elements are comprised of a bleach-accelerating agent and an ethyleneoxy-substituted fatty acid ester of sorbitan. The bleach-accelerating composition is utilized subsequent to the color developing step and prior to the bleaching step and serves to enhance the effectiveness of the bleaching step. Incorporation of the ethyleneoxy-substituted fatty acid ester of sorbitan in the bleach-accelerating composition serves to avoid or at least minimize problems of scum formation which commonly occur in such compositions.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: June 13, 1989
    Assignee: Eastman Kodak Company
    Inventor: Paul A. Schwartz
  • Patent number: 4837122
    Abstract: This invention provides a method for deleting images formed on offset printing plates which comprises treating the surface of undesired portion of the images formed by exposure and development with a deletion fluid which contains a ferric complex salt of an organic acid and 0.3 mol/liter or more of at least one compound selected from the group consisting of a soluble bromide and a soluble iodide. Preferred ferric complex salt is a ferric complex salt of aminopolycarboxylic acid.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: June 6, 1989
    Assignee: Mitsubishi Paper Mills. Ltd.
    Inventors: Toshiro Kondo, Eiji Kanada, Hiroshi Nishinoiri
  • Patent number: 4826745
    Abstract: Method of preparing a hologram which is of the silver halide in gelatin binder type, which method comprises exposing, developing and bleaching the holographic material, where a water-soluble halide and a ferric salt of an acetic acid derivative are used in the bleach bath.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: May 2, 1989
    Assignee: Ciba-Geigy AG
    Inventors: Trevor Groves, David W. Butcher
  • Patent number: 4822726
    Abstract: A method for forming color images and silver halide color photographic material for use therewith are provided by the present invention. The method comprises imagewise exposing a silver halide color photographic material processing with a color developer and then successively processing with a solution having a bleaching ability and having a pH of about 6.5 or less for a period of time of about 75 seconds or less, wherein the silver halide color photographic material contains at least one light-sensitive layer on a support, the light-sensitive layer containing at least one coupler capable of forming a dye by the coupling reaction with the oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion which substantially excludes silver iodide but contains silver chloride in an amount of about 80 mol % or more and which has been spectrally-sensitized with a dye as represented by general formula (I), (II) or (III) described herein.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: April 18, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ikeda, Tadashi Ogawa, Masaki Okazaki
  • Patent number: 4822725
    Abstract: A method for processing a silver halide color photographic material is described which comprises subjecting an imagewise exposed silver halide color photographic material to color development and then bleaching the developed color photographic material with a bleaching solution containing a ferric salt of an aminopolycarboxylic acid, wherein the bleaching solution additionally contains at least one compound represented by the following general formula (I) or (II) ##STR1## wherein R.sub.1 and R.sub.2 are identical or different and each represents a hydrogen atom or a methyl or ethyl group, and n represents an integer of 1 to 3, and wherein the oxidation reduction potential of the bleaching solution is adjusted to not more than 100 mV.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: April 18, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Shinzo Kishimoto, Yasuhisa Ogawa
  • Patent number: 4804618
    Abstract: A method for treating a silver halide color photographic material comprising color developing an exposed silver halide color photographic material and treating it with a treating solution having bleaching power containing at least one ferric complex salt of an organic chelating compound represented by the formula (X-1): ##STR1## wherein W.degree. represents an alkylene group containing a thioether bond; Y.sup.1, Y.sup.2, Y.sup.3 and Y.sup.4 each independently represents a methylene group or an ethylene group; and Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4 each independently represents a carboxyl group, a phosphono group, a sulfo group, or a hydroxyl group.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: February 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Kiyoshi Morimoto
  • Patent number: 4786585
    Abstract: A method of forming an image and a radiation-sensitive medium suitable for carrying an image is disclosed. The medium comprises a substrate having a surface structure comprising grooves with a depth of 20 to 100 nanometers. At or close to the surface structure there is a layer of radiation-responsive material which is such that irradiation of selected parts of the structure with radiation of a predetermined polarization causes radiation to be absorbed at the irradiated parts of the surface so that corresponding areas of the radiation-responsive layer are affected in a way which makes such areas distinguishable from the remaining, non-irradiated areas of the radiation-responsive layer. An image and/or data may be stored in such a medium in analogue, digital or pictorial form, or in a combination of any two or all three of these forms. The invention also provides primary and secondary pre-formed data carrying media, the secondary media being replicated from the primary media.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: November 22, 1988
    Assignee: Plasmon Data Systems, Incorporated
    Inventors: Victor C. Humberstone, Robert M. Pettigrew
  • Patent number: 4780403
    Abstract: A silver halide color photographic material comprising a support having thereon at least one photographic emulsion layer containing tabular silver halide grains having an average aspect ratio of 5 or more and the silver halide color photographic material containing at least one compound represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group or an acyl group provided that both R.sub.1 and R.sub.2 do not represent hydrogen atoms at the same time, or R.sub.1 and R.sub.2 form a ring; and r represents an integer of from 1 to 3.The silver halide color photographic material can be bleached in a short period of time using a bleaching agent having a weak bleaching ability which meets requirements of preventing environmental pollution.A method for processing the silver halide color photographic material by subjecting to color development, then to treatment with a bath having a bleaching ability is also disclosed.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: October 25, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Keiji Mihayashi
  • Patent number: 4780398
    Abstract: A bleaching composition for color photographic materials consists essentially of an aqueous solution containing a complex of ferric ion and an aminopolycarboxylic acid or salt thereof; a mercapto-substituted 5-membered heterocyclic nitrogen compound having at least two nitrogen atoms; and a vinyl pyrrolidone polymer selected from the group consisting of poly-N-vinyl pyrrolidone and an alkyl-substituted poly-N-vinyl pyrrolidone.Use of the novel bleaching composition in the bleaching process for color photographic materials results in a substantial reduction in bleaching time while preventing the formation of a precipitate during the process. Further, use of the bleaching composition and process permits a significant reduction in the amounts of bleaching agent and other components of the bleaching solution required where the bleaching time is not critical which results in a substantial cost reduction.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: October 25, 1988
    Assignee: Olin Hunt Specialty Products, Inc.
    Inventor: Hongzoon Kim
  • Patent number: 4774169
    Abstract: A processing solution for developing a silver halide color photographic material. The material has a color developing agent and at least one compound selected from the group consisting of an aminocarboxylic acid and an aminophosphonic acid. The processing development solution has a surface tension ranging from 20 to 60 dynes/cm.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: September 27, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Kuse, Shigeharu Koboshi, Masahiko Kon
  • Patent number: 4769312
    Abstract: A method of processing silver halide color photographic materials which comprises image-wise exposing said silver halide color photographic materials, color developing and then desilvering them in a bath having bleaching ability, characterized in that the bath having bleaching ability comprises two baths, the oxidation-reduction potential of the first bath being higher than that of the second bath, the oxidation-reduction potential of the second bath falling in the range of +60 mV to -60 mV, the first bath containing a water-soluble bromide in an amount of 0.5 to 1.3 mole/l, and the second bath containing a water-soluble bromide in an amount of 0 to 0.5 mole/l.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: September 6, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Akira Abe, Junya Nakajima
  • Patent number: 4762774
    Abstract: A method for color image formation is disclosed, comprising imagewise exposing to light a silver halide color photographic material having a silver halide emulsion layer containing monodispersed silver halide grains, subjecting the exposed material to color development, and processing the material with a bath primarily having bleaching capacity and then with a bath having bleach-fixing capacity. The method realizes acceleration of desilvering to reduce the processing time.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: August 9, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Toshihiro Nishikawa, Akira Abe, Junya Nakajima
  • Patent number: 4753868
    Abstract: A process for processing a silver halide color photographic material is described, comprising developing an imagewise exposed light-sensitive material and then bleach-fixing it, wherein the light-sensitive material contains at least one sensitizing dye selected from three particular types of sensitizing dye compounds, and a bleach-fixing solution contains iodide ions in an amount exceeding 1.2.times.10.sup.-3 gram ion per liter of solution.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: June 28, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kensuke Goda, Akio Mitsui
  • Patent number: 4748097
    Abstract: A method of preparing a hologram which comprises subjecting holographic material to a holographic exposure, the holographic material comprising silver halide emulsion of which at least 80% by weight of the halide is bromide, developing the exposed material in a silver halide developing solution to yield developed silver, converting the developed silver to silver chloride using a bleaching agent selected from ferric ions, persulphate ions, chlorate ions, peroxides and water-soluble quinones, in the presence of chloride ions and then fixing out the silver chloride using a silver halide fixing agent which dissolves silver chloride but not silver bromide or silver iodobromide under the conditions of use.
    Type: Grant
    Filed: June 24, 1986
    Date of Patent: May 31, 1988
    Assignee: Ciba-Geigy AG
    Inventors: John A. Clark, Alan Adshead, David W. Butcher
  • Patent number: 4745048
    Abstract: A quick desilvering process of silver halide color photographic materials is provided, wherein the total amount of coated silver is 5.2 g/m.sup.2 or less, an average iodide content in the whole light-sensitive silver halide grains is 5.5 mol % or less; and a 2-equivalent magenta polymer coupler is included as a magenta coupler, and bleach-fixing treatment, or bleaching treatment at a pH of 5.5 or less, or desilvering treatment in the presence of a specific desilvering accelerator is carried out. Silver halide color photographic materials which permit the quick desilvering are also provided. These contain a specific desilvering accelerator.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: May 17, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Kei Sakanoue, Noboru Sasaki
  • Patent number: 4737450
    Abstract: A method for the processing of photographic elements includes a bleach-fixing step utilizing a bleach-fixing composition comprising an aqueous alkaline solution of a peroxy compound and an ammonium or amine salt of a weak acid.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: April 12, 1988
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey L. Hall, Jacob J. Hastreiter, Jr.
  • Patent number: 4717647
    Abstract: A method for the processing of a silver halide color photographic element comprising imagewise exposing the element, color developing the exposed element, followed by de-silvering, characterized in that the de-silvering step comprises processing the developed element in a bleaching bath containing an aminopolycarboxylic acid ferric ion complex salt and subsequently in a blixing bath containing an aminopolycarboxylic acid ferric ion complex salt and a fixing agent.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: January 5, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Junya Nakajima
  • Patent number: 4707434
    Abstract: Disclosed is a color forming method which comprises subjecting a light-sensitive silver halide color photographic material having a photographic constituent layer comprising blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers on a support and having a total thickness of the photographic constituent layer of 25 .mu.m or less to imagewise exposure, then carrying out color developing processing of the exposed material in the presence of a dye forming coupler and processing the developed image with a bleach-fixing solution.The color forming method of the present invention enables rapid processing of a high sensitivity color light-sensitive material.
    Type: Grant
    Filed: August 14, 1985
    Date of Patent: November 17, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shigeharu Koboshi, Moeko Higuchi
  • Patent number: 4702998
    Abstract: There are disclosed a processing solution having bleaching ability for use in light-sensitive silver halide photographic material, which comprises at least one selected from metal complexes of large cyclic polyamine derivatives and a method for processing of light-sensitive silver halide photographic material, which comprises carrying out development processing of an exposed light-sensitive silver halide photographic material and then processing the developed material with the processing solution.The processing solution of the present invention has potent bleaching power, and can afford excellent photographic image characteristics by processing therewith.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: October 27, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: M. Tanaka, Kazuhiro Kobayashi, Shigeharu Koboshi
  • Patent number: 4695530
    Abstract: A method for forming an image in a silver halide color photographic light-sensitive material comprising developing an imagewise exposed silver halide color photographic light-sensitive material and then bleach fixing the silver halide color photographic light-sensitive material in a bleach fixing bath, the silver halide photographic color light sensitive material comprising a support having thereon a silver halide emulsion layer containing a yellow coupler, a silver halide emulsion layer containing a magenta coupler and a silver halide emulsion layer containing a cyan layer, wherein the silver halide emulsion layer containing the magneta coupler contains at least one kind of pyrazoloazole type coupler represented by the general formula (I): ##STR1## wherein R.sup.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: September 22, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kotaro Nakamura, Takatoshi Ishikawa
  • Patent number: 4609616
    Abstract: Bath compositions for bleaching silver halide-containing recording materials contain an N-carboxyalkaneaminoalkane phosphonic acid or a salt thereof.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: September 2, 1986
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventor: Karl Frank
  • Patent number: 4605611
    Abstract: A method for processing a silver halide color photographic material by subjecting a light-exposed silver halide color photographic material to a color development and then subjecting it to bleach processing and fix processing or to blix processing, which comprises performing said bleach processing or blix processing using a bleach bath or a blix bath containing a ferric ion complex salt as a bleaching agent, said bleach bath or blix bath, or a prebath for said bath containing at least one of compounds represented by the following general formula (I) or (II); ##STR1## wherein, X represents a hydrogen atom, ##STR2## Y.sup..crclbar. represents an anion; Q represents an atomic group necessary for forming a quaternary nitrogen-containing unsaturated heterocyclic ring; n represents an integer of 1 to 5; R.sup.1, R.sup.2, R.sup.6 and R.sup.8, which may be the same or different, each represents a hydrogen atom or a lower alkyl group; R.sup.3, R.sup.4 and R.sup.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: August 12, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Ohno, Shinzo Kishimoto
  • Patent number: 4563405
    Abstract: Disclosed is a bleaching solution or bleach-fixing solution for a light-sensitive silver halide photographic material, which comprises an oxidizing agent comprising a diethylenetriaminepentaacetic acid iron (III) complex salt, and at least one metal ion selected from the group consisting of nickel, cobalt, zinc, cerium, ruthenium, yttrium, samarium, magnesium, calcium, bismuth, strontium, manganese, aluminum, tin, barium, indium, thallium and zirconium. In another embodiment, the solution may further contain a chelating agent other than diethylenetriaminepentaacetic acid.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: January 7, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Ishikawa, Kazuhiro Kobayashi, Shigeharu Koboshi
  • Patent number: 4554242
    Abstract: A method for processing a color photographic light-sensitive material by subjecting an exposed silver halide color photographic light-sensitive material to color development, then to bleaching and fixing or then to bleach-fixing, which method comprises using a ferric ion complex salt as a bleaching agent in the bleaching or bleach-fixing and incorporating at least one compound represented by general formula (I) described below or a tautomer thereof: ##STR1## wherein all the symbols are defined in the appended claims, in a bleaching bath or bleach-fixing bath or in a prebath of the bleach-fixing bath. The method of the present invention does not produce poisonous materials which are harmful to the environment and provides an excellent high speed bleaching process without harming other photographic properties.
    Type: Grant
    Filed: January 9, 1985
    Date of Patent: November 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Ohno, Shinzo Kishimoto, Morio Yagihara
  • Patent number: 4552834
    Abstract: The bleaching from photographic elements of silver produced by the development of silver halide having a dye adsorbed to its surface by employing as a bleaching agent a ferric complex of a polycarboxylic acid is improved by the presence of a compound of the formula: ##STR1## wherein Ar is an aromatic linking group,R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are hydroxy substituted lower alkyl groups,R.sup.5 and R.sup.6 are lower alkanediyl groups,X is a charge balancing counter ion,x and y are 0 or 1, andz is 0, 1, or 2.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: November 12, 1985
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Gary M. Einhaus
  • 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