Silver Bleach Or Bleach-fix Patents (Class 430/393)
  • Patent number: 5360700
    Abstract: A process for developing and its after-treatment of an exposed silver halide photographic material which is capable of replacing a step of rinsing by water washing and a step of final stabilization by formaldehyde, with a single stabilizing step without water rinsing followed by directly to a drying step is disclosed.The process comprises a solution capable of bleaching containing a ferric complex salt of organic acid, diethylenetriaminepentaacetic acid and a like, and a stabilizing solution containing a certain aldehyde compound.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: November 1, 1994
    Assignee: Konica Corporation
    Inventors: Tomonori Kawamura, Shigeharu Koboshi
  • Patent number: 5358828
    Abstract: A color photographic element is disclosed comprising a support bearing at least one photographic silver halide emulsion layer, an image dye-forming coupler, and a coupler (A) capable of forming a compound that is washed out of the photographic element upon processing and capable of releasing a bleach accelerator group, wherein the coupler (A) is represented by the formula:(SOL).sub.x --COUP--(R.sup.1).sub.y --(R.sup.2).sub.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: October 25, 1994
    Assignee: Eastman Kodak Company
    Inventors: William J. Begley, Stephen P. Singer, David T. Southby, Donald Singleton, Jr.
  • Patent number: 5354647
    Abstract: The invention provides a bleach fix agent comprising a dilute solution of an alkaline metal or ammonium thiosulphite or a mixture thereof and iron (III) EDTA together with a soluble sulphite. The invention is characterized in that the soluble sulphite is present in an excess of the amount required for stabilization whereby the sulphite can be sacrificially destroyed by oxidizing agents in use thereby to neutralize the oxidizing effects upon the thiosulphate. The invention is particularly suitable for "RX" processes and results in the possibility of eliminating the stop-bath without allowing staining of the photographic material to occur.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: October 11, 1994
    Assignee: Eastman Kodak Company
    Inventor: John R. Fyson
  • Patent number: 5352568
    Abstract: A processing method for silver halide color photographic material and a bleaching solution used in the processing are disclosed. Sufficient desilvering in a short time and prevention of bleaching fogging can be obtained by the process. The process is applicable for silver-rich high-sensitivity color light-sensitive material. The bleaching solution comprises a of a ferric complex salts of compounds represented by the following Formula A or B in an amount of at least 0.01 mol per liter of the bleaching solution and a buffer agent capable of adjusting pH value to 3 to 7; and pH value of the bleaching solution is held within the range of from 3 to 7; ##STR1## wherein A.sub.1 through A.sub.4 are each --CH.sub.2 OH, --COOM, or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.sub.1 and M.sub.3 are each a hydrogen atom, a sodium atom, a potassium atom or an ammonium group; X is a substituted or unsubstituted alkylene group having three to six carbon atoms; B.sub.1 and B.sub.
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: October 4, 1994
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Masao Ishikawa, Shigeharu Koboshi, Masayuki Kurematsu
  • Patent number: 5352567
    Abstract: A novel method for processing a silver halide color photographic material which comprises color developing an imagewise exposed silver halide color photographic material and then processing the material with a having a bleaching ability containing at least one bleaching agent a ferric complex of a compound represented by at least one of formula (I) and formula (II): ##STR1## wherein W.sup.1 represents an alkylene group containing 3 or less carbon atoms in total; L.sup.1, L.sup.2, L.sup.3 and L.sup.4 each represents an alkylene or arylene group; and M.sub.1 to M.sub.6 each represents a hydrogen atom or a cation; ##STR2## wherein W.sup.2 represents an alkylene group having 2 to 8 carbon atoms, an arylene group having 6 to 10 carbon atoms, cyclohexane group, ##STR3## (in which W.sup.21 and W.sup.22 each represents an alkylene group, and m represents an integer of 1 to 3, and A represents a hydrogen atom, hydrocarbon group, --L.sub.A --COOM, --L.sub.A --PO.sub.3 M.sub.2, --L.sub.A --OH or --L.sub.A --SO.sub.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: October 4, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Tadashi Inaba, Morio Yagihara
  • Patent number: 5350668
    Abstract: A method for processing a silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer which comprises subjecting the silver halide color photographic material to imagewise exposure and color development, and then processing with a processing solution having bleaching ability, wherein the silver halide emulsion layer contains silver halide grains having a composition such that tabular silver iodobromide grains having an aspect ratio of not higher than 3 account for at least 50% of the entire projected area of the silver halide grains, and the processing solution having bleaching ability contains as a bleaching agent an iron (III) complex salt of a compound having the described structural formula, used in a concentration of 0.01 to 0.17 mol/liter.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: September 27, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Hiroyuki Seki, Hisashi Okada, Tadashi Inaba
  • Patent number: 5346809
    Abstract: A method of photographic color image formation is disclosed. The method gives a color photographic image having high preservability under a condition with a lowered replenishing amount of developer. The method comprises the following steps;(1) imagewise exposing to light a silver halide color photographic light-sensitive material which comprises a support having thereon a silver halide emulsion layer,(2) developing the exposed light-sensitive material with a color developer,(3) bleach-fixing the developed light-sensitive material with a bleach-fixer, and(4) washing the bleach-fixed light-sensitive material, In the above method, the silver halide emulsion layer contains a specified yellow coupler having a molecular weight of not more than 800 and a specified antifungal agent. The developing step is carried out for a time not more than 25 seconds and developer is replenished with a developer replenisher in a ratio of from 20 ml to 150 ml per square meter of light-sensitive material developed the developer.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: September 13, 1994
    Assignee: Konica Corporation
    Inventors: Shun Takada, Satoshi Masumi
  • Patent number: 5342740
    Abstract: A method of processing an imagewise exposed silver halide color photographic material is disclosed, wherein the photographic material comprises a support having thereon a photosensitive silver halide emulsion layer containing a silver halide emulsion having a silver chloride content of at least 80 mol %. The processing method comprises the steps of color developing the photographic material in a color developing solution, and then bleach-fixing in a bleach-fixing solution, further comprising replenishing the bleach-fixing solution as the photographic material is processed by adding thereto a regenerated bleach-fixing replenisher and collecting the resulting overflow solution from the bleach-fixing tank, the regenerated bleach-fixing replenisher comprising a regenerating agent and the overflow solution from the bleach-fixing tank, and wherein the solids content of the regenerating agent is at least 70 wt % of the total weight of the regenerating agent.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: August 30, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masatoshi Goto, Takatoshi Ishikawa
  • Patent number: 5338649
    Abstract: A process for bleaching or bleach-fixing an imagewise exposed silver halide photographic material is provided, comprising developing in a color developing solution and bleaching or bleach-fixing in a processing composition having a bleaching capacity containing as a bleaching agent a metal chelate compound of a chelate-forming compound or salt thereof and a metal ion selected from the group consisting of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(II), Au(III) and Ce(IV), the chelate-forming compound or salt thereof is represented by formula (I): ##STR1## wherein G.sub.1 and G.sub.2 each represents a carboxyl group, a phosphono group, a sulfo group, a hydroxyl group, a mercapto group, an aryl group, a heterocyclic group, an alkylthio group, an amidino group, a guanidino group or a carbamoyl group; L.sub.1, L.sub.2 and L.sub.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: August 16, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Inaba, Hisashi Okada, Ryo Suzuki, Yasuhiro Katsuoka, Hiroyuki Seki
  • Patent number: 5338648
    Abstract: A process and composition for processing a silver halide photographic material. The photographic material mat be a black and white photographic material or a color photographic material.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: August 16, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuro Kojima, Nobuo Watanabe
  • Patent number: 5334491
    Abstract: Bleach compositions and methods that are improvements over those provided by Fyson, U.S. Pat. No. 4,294,914, are disclosed. A highly preferred bleach composition of this invention (a) has the ferric complex of methyliminodiacetic acid as a bleaching agent, and additionally comprises (b) at least 0.9 mole of acetic acid per liter, (c) from about 15 to about 35 grams per liter of potassium bromide; and (d) has a pH of from about 2.5 to about 4.0.This invention includes the discovery of a synergistic bleaching coaction of a bleach (i) comprising an alkyliminodiacetic acid such as methyliminodiacetic acid, and (ii) which has a pH of from about 3.5 to about 4.5 , and (iii) in which the amount of ferric iron is from about 2 to about 16 grams per liter. This coaction between iron levels and pH was previously unknown and was unexpected.Bleach formulations of this invention can be used in the processing of color photographic materials, such as film.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: August 2, 1994
    Assignee: Eastman Kodak Company
    Inventors: David G. Foster, Keith H. Stephen, Mary E. Craver
  • Patent number: 5318880
    Abstract: This invention provides a method of processing a negative color silver halide photographic element comprising taking an exposed color silver halide photographic element with a speed greater than ISO 180 or containing at least one spectrally sensitized silver halide emulsion with a tabularity greater than 100, wherein the photographic element comprises a total amount of incorporated silver and incorporated vehicle of 20 g/m.sup.2 film or less; developing the exposed photographic material; and bleaching the exposed, developed photographic element with a peracid bleach in the presence of a bleach accelerator.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: June 7, 1994
    Assignee: Eastman Kodak Company
    Inventors: Daniel R. English, Richard P. Szajewski
  • Patent number: 5316898
    Abstract: A solid composition for bleaching an exposed and developed silver halide color photographic light-sensitive material and processing method thereof. The composition contains at least one kind of ferric complex salt and is in the form of a tablet having a bulk density of 1.0 to 2.5 g/cm.sup.3. The composition provides excellent solubility and preservability.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: May 31, 1994
    Assignee: Konica Corporation
    Inventors: Yutaka Ueda, Hiroshi Yamashita
  • Patent number: 5314791
    Abstract: There are disclosed a fixing solution for a light-sensitive silver halide color photographic material which comprises containing a water-soluble surfactant and a processing method using the same.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: May 24, 1994
    Assignee: Konica Corporation
    Inventors: Masao Ishikawa, Yutaka Ueda, Shigeharu Koboshi
  • Patent number: 5300408
    Abstract: A method for processing a silver halide color photographic material, which comprises processing an imagewise exposed silver halide color photographic material with a processing solution containing at least one chelate compound of a metal salt selected from the group consisting of salts of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(II), Au(III) and Ce(IV) with an organic acid represented by following general formula (I): ##STR1## wherein Z represents a nonmetallic atom group required to form a heterocyclic group; R represents a substituent; n represents 0 or an integer of from 1 to 10; Q.sub.1, Q.sub.2 and Q.sub.3 each represents a hydrogen atom, an aliphatic hydrocarbon group substituted by a carboxyl group, an aromatic hydrocarbon group substituted by a carboxyl group or a heterocyclic group substituted by a carboxyl group; and W represents a divalent linkage group containing at least one of an alkylene group or an arylene group.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: April 5, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Tadashi Inaba
  • Patent number: 5298371
    Abstract: There is disclosed a method for processing a silver halide light-sensitive material in which processing can be carried out while maintaining and controlling the processing performance of a bleach-fixing solution. This results in making it possible to reduce the amount of the bleach-fixing solution used. The method comprises subjecting an image-wise exposed silver halide light-sensitive material to bleach-fixing processing in a bleach-fixing solution after a color development processing, wherein a bath containing the bleach-fixing solution is divided into plural parts by at least one anion exchange membrane wherein an anode and a cathode are disposed in different parts so that electrification can be carried out between the anode part and the cathode part.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: March 29, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takashi Nakamura
  • Patent number: 5298370
    Abstract: A method of processing a silver halide color photographic material using a carbamoyl or imidazole type organic metal complex bleaching agent of any of compounds of formulae (I), (II), (III), (IV), and (V) and a mercapto, mesoionic or thioether fixing agent of compounds of formulae (A), (B) and (C). A bleach-fixing composition containing the bleaching agent and fixing agent is also disclosed. The processing method provides good desilvering with little bleach fogging of the processed photographic material, and the processing composition has good stability. W in formula (III) below represents a divalent linking group.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: March 29, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuro Kojima, Hisashi Okada, Nobuo Watanabe
  • Patent number: 5288595
    Abstract: A method for processing a silver halide photosensitive material comprises the steps of developing an exposed silver halide photosensitive material and treating it with a bath having a fixing function containing an N-oxide compound having a mercapto group in the molecule. When the bath having a fixing function is used, a stable fixing power and excellent desilverization effect can be obtained by processing a color photosensitive material with only a small amount of replenisher.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: February 22, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Harumi Watanabe, Tetsuro Kojima, Nobuo Watanabe
  • Patent number: 5284740
    Abstract: A silver halide color photographic material is described comprising a support having provided thereon one or more red-sensitive silver halide emulsion layers, one or more green sensitive silver halide emulsion layers and one or more blue-sensitive silver halide emulsion layers wherein the average silver iodide content of silver halide in all the silver halide emulsion layers is not less than 10 mol% and the silver halide color photographic material contains a compound represented by the following general formula (I):Q--SM.sup.1 (I)wherein Q represents a heterocyclic group having at least one group selected from --SO.sub.3 M.sup.2, --COOM.sup.2, --OH and --NR.sup.1 R.sup.2 directly or indirectly connected thereto; M.sup.1 and M.sup.2 each represents a hydrogen atom, an alkali metal, a quaternary ammonium or a quaternary phosphonium; and R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituted or unsubstituted alkyl group.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: February 8, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Yoshihiro Fujita, Masatoshi Goto
  • Patent number: 5273864
    Abstract: This invention provides a processing method for an exposed silver halide color photographic material, which enables cut-down of the times required for bleaching-and-fixing and for washing and yet affords a stable image excellent in color reproduction. The processing method of this invention is characterized in that the silver halide color photographic material is developed with a color developing solution substantially free of benzyl alcohol, and that the thus developed photographic material is subjected to bleaching-and-fixing for a time of not more than 70 seconds and then subjected to washing for a time of not more than 70 seconds. Another important aspect of the invention resides in the use of a magenta coupler in the processing method with a merit that a stable colored image having excellent hue is developed without the fear of formation of stains although the times for the bleaching-and-fixing and for the washing are shortened remarkedly.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: December 28, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Nobuo Sakai, Minoru Sakai
  • Patent number: 5272044
    Abstract: Disclosed is a silver halide photographic material comprising a compound represented by the general formula (I), (II), or a salt thereof or a compound represented by the general formula (III), with these groups being defined as in the specification: ##STR1## also disclosed is a method for the processing of a silver halide photographic material, which comprises processing a silver halide photographic material in the presence of a compound represented by the general formula (I) or (II) or a salt thereof or a compound represented by the general formula (III).
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: December 21, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junji Nishigaki, Akihiko Ikegawa, Masaki Okazaki, Minoru Yamada, Nobuhiko Uchino
  • Patent number: 5266449
    Abstract: A bleaching bath for processing of a color photographic silver halide material which contains the ferric complex of alaninediacetic acid as the bleaching agent and in a dye-stabilizing amount a formaldehyde precursor of the formula ##STR1## wherein X and Y denote the residual atoms of a hetero aromatic 5- or 6-membered ring,yields color photographic images with excellent dye-stabilizing. In the atmosphere above the stabilizing bath no formaldehyde is detectable.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: November 30, 1993
    Assignee: Agfa Gevaert AG
    Inventors: Christa Dacke, Heinrich Odenwalder, Hans Langen
  • Patent number: 5256531
    Abstract: A photographic processing composition containing at least one compound represented by formula (I) ##STR1## wherein R, R.sub.1 and R.sub.2 each represent a hydrogen atom, an alkyl group or an aryl group; and L.sub.1 represents an alkylene group or an arylene group. Also disclosed a processing composition for a silver halide color photographic material containing a metal chelate compound formed from a compound represented by formula (I) and a metal salt selected from salts of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(III), Au(II) and Ce(IV). A method is also disclosed for processing a silver halide photographic material with the processing compositions.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 26, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Shigeru Nakamura
  • Patent number: 5254444
    Abstract: A photographic processing composition containing at least one compound represented by formula ##STR1## wherein R, R.sub.1 and R.sub.2 each represent a hydrogen atom, an alkyl group or an aryl group; and L.sub.1 represents an alkylene group or an arylene group. Also disclosed a processing composition for a silver halide color photographic material containing a metal chelate compound formed from a compound represented by formula (I) and a metal salt selected from salts of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(III), Au(II) and Ce(IV). A method is also disclosed for processing a silver halide photographic material with the processing compositions.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 19, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Shigeru Nakamura
  • Patent number: 5254442
    Abstract: A method of processing silver halide color photographic material is disclosed. The process comprises a step of color development, a step of processing with a processor having a bleaching power and a step of stabilization, wherein an air-time ratio at a step of color development, or a step of processing with a processor having a bleaching power is 15 to 65%.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: October 19, 1993
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Sigeharu Koboshi, Masayuki Kurematsu
  • Patent number: 5250401
    Abstract: Disclosed is a method for processing a silver halide color photographic material, which comprises the steps of:image-wise exposing a silver halide color photographic material,color developing the image-wise exposed silver halide photographic material, andprocessing the color developed silver halide photographic material, in the presence of a processing composition containing a metal chelating compound formed by a compound represented by following formula (I) and a salt of a metal belonging to group Ib, IIb, IIIb,IVb, Vb, VIb, VIIb, or VIII of the Periodic Table: ##STR1## wherein Z represents a heterocyclic group; L represents a divalent linkage group; R.sub.11 and R.sub.12 each represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group; and n represents 0 or 1. Also disclosed is the processing composition used in the above method.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: October 5, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Morio Yagihara, Tadashi Inaba, Hiroyuki Seki
  • Patent number: 5250402
    Abstract: A photographic processing composition for processing a silver halide photographic light-sensitive material. The composition contains at least one metal chelating compound formed from a metal salt of Fe(III) and a monoamine compound or salt thereof represented by formula (I-a') or (I-b'): ##STR1## wherein R represents a substituent; Q represents a group of non-metal atoms necessary to form a heterocyclic ring; X and Y each represents a carbon atom or a nitrogen atom; L.sub.1 ' and L.sub.2 ' each represents an alkylene group; M.sub.1, M.sub.2, M.sub.3 each represents a hydrogen atom or a cation; and u represents 0, 1, 2, 3, or 4.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 5, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Tadashi Inaba, Morio Yagihara
  • Patent number: 5250397
    Abstract: A method for processing a silver halide color photographic material is disclosed, which comprises: color developing a silver halide color photographic material with a color developer containing an aromatic primary amine color developing agent, followed by processing with a processing solution having a bleaching ability, wherein the replenishment rate of said color developer is in the range of 600 ml or less per m.sup.2 of the photographic material, and wherein said silver halide color photographic material contains at least one yellow colored cyan coupler.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: October 5, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsushige Kamada, Keiji Mihayashi, Yoshihiro Fujita
  • Patent number: 5246821
    Abstract: A photographic bleaching solution for procesisng a silver halide color photographic material, comprising an iron(III) complex salt of an organic acid in a concentration of from 0.01 mol/l to less than 0.1 mol/l, at least 50 mol % of said iron(III) complex salt of an organic acid contained in the bleaching solution is an iron(III) complex salt of an organic acid having an oxidation-reduction potential of not lower than 200 mV determined by using a normal hydrogen electrode at pH 5.0 (excluding iron(III) complex salts of iminodiacetic acid and iron(III) complex salts of methyliminodiacetic acid), and an acid having a pKa of from 2 to 5.5 (excluding aminopolycarboxylic acids, salts thereof and iron complex salts of the aminopolycarboxylic acids) in a concentration of from 0.1 mol/l to 0.8 mol/l, and the concentration of ammonium ion in the bleaching solution is not higher than 0.3 mol/l. A method for processing a silver halide color photographic material using said bleaching solution.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: September 21, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Hiroyuki Seki
  • Patent number: 5244778
    Abstract: An acid photographic fixing agent adapted for colour photography utilizing silver coating rates of up to 2.1 mg/dm.sup.2 whereby stabilized thiosulfate fixer solution has a concentration of less than 10 gpl of ammonium thiosulphate or its chemical equivalent, comprising a solution of an alkali metal thiosulphate or an ammonium thiosulphate or a mixture thereof stabilized by a soluble sulphite or bisulphite; characterized in that the ratio by weight of the soluble sulphite to the thiosulphate is greater than 1.2:1 or greater than 1.44:1 if the bisulphite is used; thereby to preferentially maintain the thiosulfate in use.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: September 14, 1993
    Assignee: Eastman Kodak Company
    Inventor: John R. Fyson
  • Patent number: 5238791
    Abstract: A readily biodegradable bleaching bath having an adequate bleaching effect(1) contains an iron(III) complex salt in which at least 20 mol-% and preferably at least 80 mol-% of the complexing agent corresponds to formula (I) ##STR1## in which R.sub.1 is hydrogen or hydroxy,n is 1 or 2,x is 2 or 3 andy is 0 or 1and the sum of x and y is always 3, and(2) an excess of free complexing agent of 1 to 120 mol-% and preferably 5 to 20 mol-%, based on the iron complex or the iron complex salt, and(3) is adjusted to a pH value of .ltoreq.4.5.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: August 24, 1993
    Assignee: AGFA Gevaert Aktiengesellschaft
    Inventors: Gustav Tappe, Ralf Wichmann, Heinz Meckl
  • Patent number: 5238788
    Abstract: There is disclosed a method for forming a dye image which comprises a step of processing, with a color developing solution, a photo-sensitive silver halide photographic material comprising a support having thereon a silver halide emulsion layer. The method is characterized in that said silver halide emulsion layer comprises silver halide grains having a silver chloride content of not less than 90 mol. %; said photosensitive silver halide photographic material comprises a white pigment in an amount of not less than 3.5 g per m.sup.2 of said photographic material; and said photosensitive silver halide photographic material is, after being processed with the color developing solution, processed with a bleaching solution (BL-1) and subsequently with a fixing solution.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: August 24, 1993
    Assignee: Konica Corporation
    Inventors: Makoto Kajiwara, Takashi Kadowaki
  • Patent number: 5236814
    Abstract: A method for processing a silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer, comprising steps ofdeveloping said light-sensitive material with a color developerbleaching, after said developing step, said light-sensitive material with a bleaching solution, andtreating, after said bleaching step, said light-sensitive material with a solution having fixing capability, whereinsaid light-sensitive material has a coating weight of silver of not more than 1 g/m.sup.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: August 17, 1993
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Shigeharu Koboshi
  • Patent number: 5234801
    Abstract: A method for continuously processing an image-wise exposed silver halide color photographic material comprising the steps of color developing, bleach-fixing and at least one of washing with water and stabilizing. A replenisher is supplied to the bleach-fix bath to result in an overflow of from 30 to 500 ml/m.sup.2 of the photographic material processed. The bleach-fixing step further comprises collecting the bleach-fix overflow, regenerating the collected bleach-fix bath overflow by adding thereto a regenerant to produce a regenerated bleach-fix bath, and reusing the regenerated bleach-fix bath as a replenisher to the bleach-fix bath. The regeneration rate defined as the amount of bleach-fix overflow used for regeneration divided by the total amount of overflow multiplied by 100% is more than 80%. The photographic layers of the silver halide color photographic material have a degree of swelling of from about 2.5 to 4.0.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: August 10, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takatoshi Ishikawa
  • Patent number: 5232822
    Abstract: A method for processing a light-sensitive silver halide color photographic material including color developing processing, and fixing. The bleaching is with a bleaching solution containing at least one of ferric complexes of the compounds represented by the formula (A) or (b) shown below and has a pH of 2.0 to 5.5. The fixing is with a processing solution having fixing ability and which contains at least one mole/liter of a thiosulfate. Said processing solution having fixing ability contains a compound selected from the group (FB). ##STR1## wherein A.sub.1 to A.sub.4 may be either the same or different, and each represent --CH.sub.2 OH, --COOM or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.sub.1 and M.sub.2 each represent hydrogen atom, sodium atom, potassium atom or ammonium group; X represents a substituted or unsubstituted alkylene group having 3 to 6 carbon atoms, ##STR2## wherein A.sub.1 to A.sub.4 may be either the same or different and each represent --CH.sub.2 OH, --COOM or --PO.sub.3 M.sub.1 M.sub.2 ; M, M.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: August 3, 1993
    Assignee: Konica Corporation
    Inventors: Masao Ishikawa, Shigeharu Koboshi
  • Patent number: 5230991
    Abstract: A method for processing a silver halide color photographic light-sensitive material is discloseed. The method comprises the steps ofdeveloping a silver halide color photographic light-senaitive material which comprises silver halide grains substantially consisting of silver chloride, whith acolor developer, andbleach-fixing said deveoped light-sensitive material with a bleach-fixer containing a water soluble bromide salt in an amount of from 0.01 mol/l to 1.0 mol/l and having a pH value of from 6.5 to 8.5 in a tank in whic said bleach fixer has a surface area opening to air of from 8 cm.sup.2 /l to 100 cm.sup.2 /l.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: July 27, 1993
    Assignee: Konica Corporation
    Inventors: Shinsaku Nagaoka, Shigeharu Koboshi
  • Patent number: 5225320
    Abstract: Method of processing a silver halide color photosensitive material which comprises the steps of a developing process, a bleach-fixing solution or a fixing solution, and then, without washing with water, treated with a stabilizing solution. The method is characterized in that the silver halide color photo sensitive material comprises a high boiling point organic solvent having a dielectric constant of 3.5 or more and the stabilizing solution comprises silicone having the surface tension 20 to 60.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: July 6, 1993
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Kuse, Shigeharu Koboshi
  • Patent number: 5223379
    Abstract: A processing composition having a bleaching ability which is used for processing silver halide color photographic materials, and containing a metal chelate compound formed fromthe salt of a metal selected from the group consisting of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(II), Au(III) and Ce(IV), andat least one of a compound represented by formula (I) and a compound represented by formula (II): ##STR1## wherein L.sub.1 and L.sub.2 each represents ##STR2## X.sub.1 and X.sub.2 each represents an oxygen atom or a sulfur atom, R, R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom or an aryl or alkyl group which may be substituted, R.sub.4 represents an aryl or alkyl group which may be substituted, ##STR3## or --OR.sub.7, R.sub.5 and R.sub.6 each has the same meaning as R.sub.1, R.sub.7 represents an aryl or alkyl group which may be substituted, Y.sub.1 and Y.sub.2 each represents an arylene or alkylene group which may be substituted, R, L.sub.1 and L.sub.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: June 29, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Tadashi Inaba, Toshihiko Maekawa, Tsukasa Yamada, Hiroyuki Seki
  • Patent number: 5221597
    Abstract: Disclosed is a method of processing a silver halide color photographic material where an imagewise exposed silver halide color photographic material is, after color-developed, processed with a bleaching solution contains (1,3-diamino-propanetetraacetato)iron (III) complex and that, when the material is processed with the said processing solution having a fixing ability, a jet stream of the said processing solution is run against the emulsion surface of the said photographic material. By the method, rapid desilvering is possible, and the material processed is not stained.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: June 22, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Shinji Ueda, Takatoshi Ishikawa, Akira Abe, Shigeru Nakamura
  • Patent number: 5219715
    Abstract: A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: June 15, 1993
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, George F. Wu, Thomas B. Brust, James T. Kofron, Gary L. House
  • Patent number: 5217855
    Abstract: A photographic processing composition containing at one compoud represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, an aliphatic group, or an aromatic group, L.sub.1 and L.sub.2 each represents a divalent bonding group including an alkylene group and/or an arylene group; X represents a ##STR2## group (wherein R.sub.a, R.sub.b and R.sub.c each represents a hydrogen atom, an aliphatic group or an aromatic group, and R.sub.d represents an aliphatic group or an aromatic group); and Y represents a carboxy group, a hydroxy group, a phosphono group, a sulfo group or a salt thereof. The processing composition does not produce precipitate or sludge even when contaminated by metallic ions. A processing method using the processing composition is also disclosed.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: June 8, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Morio Yagihara, Shigeru Nakamura
  • Patent number: 5217853
    Abstract: A method for development processing of a silver halide photosensitive material using an automatic processor including at least the functions of development, fixing, washing and drying is disclosed, comprising using an alkaline developer containing a dialdehyde film hardening agent and carrying out the processing under conditions such that the running equilibrium pH of the fixer is at least 4.6.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: June 8, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Yamada, Takashi Toyoda
  • Patent number: 5215872
    Abstract: A method of processing a silver halide color photographic material is disclosed, comprising a support having provided thereon at least one light-sensitive emulsion layer, which comprises the steps of color developing the material with a developer to which a replenisher is added and bleaching the developed material, wherein the material contains a coupler represented by the following general formula (I) and the amount of replenisher added to the color developer is 600 ml or less per m.sup.2 of the material: ##STR1## wherein A represents a coupler group, and when A is a phenol or naphthol coupler group, n is 1, and when A is any other coupler group, n is 0; and R represents an alkyl group having from 1 to 4 carbon atoms, or a pyridyl group. Images having excellent photographic characteristics are obtained by the method even though the amount of the replenisher is reduced.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: June 1, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masatoshi Goto, Keiji Mihayashi
  • Patent number: 5206121
    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: April 2, 1992
    Date of Patent: April 27, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Chuji Tsukada
  • Patent number: 5204228
    Abstract: A method of processing a silver halide color photographic light-sensitive material having a silver halide emulsion layer containing silver halie grains having a silver chloride content of not less than 80 mol %, wherein said silver halide color photographic material, after being subjected to color-development, is continuously processed with a bleaching solution comprising at least one of ferric complex salts of compounds represented by the following formula [A] or [B]: ##STR1##
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: April 20, 1993
    Assignee: Konica Corporation
    Inventors: Hiroshi Yoshimoto, Shigeharu Koboshi
  • Patent number: 5194368
    Abstract: The present invention relates to a method for processing a silver halide photographic light-sensitive material having at least one silver halide emulsion layer containing silver iodide with a processing solution having fixing ability after developing the light-sensitive material. The object of the present invention is to speed up the fixing process in the foregoing method and to reduce the amount of waste liquor from the fixing process. The present invention is characterized in that the processing with the processing solution having fixing ability is performed while the processing solution is brought into contact with an anion-exchange resin and that 20 to 2,000 l of the processing solution per liter of the anion-exchange resin is brought into contact with the resin.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: March 16, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Tetsuro Kojima, Tohru Kitahara, Tomokazu Yasuda, Yoshihiro Fujita, Takatoshi Ishikawa
  • Patent number: 5188927
    Abstract: A composition for the processing of a silver halide color photographic material, which comprises at least one metal chelate compound formed of a salt of metal selected from the group consisting of Fe(III), Mn(III), Co(III), Rh(II), Rh(III), Au(III), Au(II) and Ce(IV) and a compound represented by the general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.a, R.sub.b, and R.sub.c each represent a hydrogen atom, an aliphatic group or an aromatic group; R.sub.5 and R.sub.6 each represents a hydrogen atom, an aliphatic group, an aromatic group, a halogen atom, a cyano group, a nitro group, an acyl group a sulfamoyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or a sulfinyl group, or R.sub.5 and R.sub.6 together may form a 5- or 6-membered ring; L.sub.1 represents a divalent aliphatic or aromatic group or a divalent linking group containing at least one of them; A.sub.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: February 23, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okada, Seki Hiroyuki
  • Patent number: 5180656
    Abstract: A method of processing a silver halide color photographic light-sensitive material and a bleach-fixer applicable in the method are disclosed. The method comprises a step for developing the light-sensitive material with a color developer, and a step for bleach-fixing the developed light-sensitive material with a bleach-fixer. The light-sensitive material contains at least one silver halide emulsion layer comprising silver halide grains having a silver chloride content of not less than 80 mol %; the bleach-fixer contains a ferric organic acid complex in an amount of not less than 0.2 mol per liter and silver halide fixing agent in an amount of not less than 0.7 mol per liter; and the step for treating with the bleach-fixer is performed for a time of not more than 30 seconds. Bleach-fixing process can be performed stably and rapidly without formation of reticulation and staining on edge portion of the light-sensitive.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: January 19, 1993
    Assignee: Konica Corporation
    Inventors: Hiroaki Kobayashi, Shigeharu Koboshi, Masayuki Kurematsu, Masao Ishikawa
  • Patent number: 5178993
    Abstract: A method for rapidly processing a silver halide color photographic material is disclosed, comprising a support having at least one red-sensitive silver halide emulsion layer containing a cyan coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler and at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, wherein the photographic material contains a yellow colored cyan coupler, the total processing time for the photographic material is 8 minutes or less, and the processing solution having a bleaching ability for the photographic material contains an oxidizing agent having a redox potential of 150 mV or more. The rapid processing method yields excellent color reproducibility and the photographic material processed by the method has excellent resistance to fading.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: January 12, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Keiji Mihayashi
  • Patent number: 5178994
    Abstract: Photographic silver halide photosensitive material is continuously processed through an automatic processor by passing the photosensitive material through a developing tank filled with a developer and then through a fixing tank filled with a fixer while supplying developer and fixer replenishers to the developing and fixing tanks in amounts corresponding to the processing quantity. The replenisher amount can be reduced by adding a chelating agent to the developer and its replenisher. Kits containing developer and fixer replenisher concentrates become empty at the same timing if the ratio of the volumes of developer and fixer replenishers prepared from their kits by diluting developer and fixer concentrates in the kits with water is substantially equal to the ratio of the amounts of developer and fixer replenishers supplied to the tanks.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: January 12, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Minoru Yamada