Color Developer Patents (Class 430/467)
  • Patent number: 5055381
    Abstract: In a method for processing silver halide photosensitive materials comprising developing an exposed silver halide photosensitive material, fixing the developed material and washing it with a washing water, the amount of calcium and magnesium compounds present in the replenishing washing water is reduced to not more than 5 mg/l on the basis of the weight of elemental calcium or magnesium and washing water is replenished in an amount of 1 to 50 times the volume of liquid carried over by the photosensitive material from a bath preceding the washing bath per unit area thereof or that the replenishing washing water is introduced into a washing bath after reducing the amount of calcium and magnesium compounds to the range mentioned above and sterilizing the same. The method makes it possible to substantially reduce the amount of washing water while reliably suppressing turbidity and proliferation of microorganisms in the washing water during and after completion of processing.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: October 8, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Yoshihiro Fujita, Toshio Koshimizu
  • Patent number: 5053322
    Abstract: A method for processing a silver halide color photographic material is disclosed, comprising a support having a thin film of metal or metal oxide on a substrate; said thin film having mirror surface reflection properties or secondary diffuse reflection properties and having a surfaced reflectance of at least 0.5; said photographic material having thereon, in order outwardly from the support, an adhesive layer and at least one light-sensitive silver halide emulsion layer, by the steps which comprise developing the silver halide color photographic material with a developing bath containing a color developing agent and at least one compound represented by formulae (I), (II), (III) or (IV): ##STR1## wherein M each represents hydrogen, an alkali metal or an ammonium group; and R.sub.1 represents a lower alkyl group; ##STR2## wherein R.sub.2 R.sub.3 and R.sub.4 each represents --COOM, --PO.sub.3 M.sub.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: October 1, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keisuke Shiba, Akira Abe
  • Patent number: 5051342
    Abstract: A silver halide photographic light-sensitive material having at least one light-sensitive emulsion layer containing surface latent image-type silver halide grains, coated on a reflective support, in which said at least one emulsion layer contains regular crystal grains of silver chloride or silver chlorobromide having a mean silver chloride content of 80 mol % or more on the basis of the total silver halide grains contained therein and substantially does not contain silver iodide, and in which a colloidal silver-containing layer is located adjacent to said emulsion layer, wherein at least one of said colloidal silver-containing layer, said emulsion layer and an interlayer therebetween contains at least one mercaptoazole compound. The material is, after having imagewise exposed, processed with a color developer within 90 seconds. The material forms an image with excellent sharpness and whiteness.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: September 24, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keisuke Shiba, Kazunori Hasebe, Seiji Ichijima
  • 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: 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: 5028517
    Abstract: A method for processing a silver halide color photographic light-sensitive material is disclosed. Fogging caused by the color developer contaminated by heavy metal ions is surpressed by the processing method. The processing method is excellent in the point that stable photographic propertied can be obtained for long while of running. The processing method comprises a step for developing with a color developer an imagewise exposed light-sensitive material which comprises a support and a photographic layer being provided on the support and including at least one silver halide emulsion layer, wherein the photographic layer has a swelling ratio within the range of from 1.5 to 3.5 and the silver halide emulsion layer comprises a silver halide emulsion having a silver chloride content of not less than 90 mole %, and the developing step is performed for a time of not less than 90 seconds with a color developer containing a compound represented by the following Formula (1): ##STR1## wherein R.sub.1 and R.sub.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: July 2, 1991
    Assignee: Konica Corporation
    Inventors: Satoru Kuse, Masao Ishikawa, Yoshimasa Komatsu, Shigeharu Koboshi
  • Patent number: 5028515
    Abstract: In a color print containing cyan, magenta and yellow colored dyes, the color print where the spectral absorption peak wave lengths of the respective colored dyes lie in the range represented by the following formula:1/2(.lambda.y+.lambda.c).gtoreq..lambda.m.gtoreq.1/2(.lambda.y+.lambda.c)-1 0.lambda.c=Spectral absorption peak wave length (nm) of the colored cyan dye.lambda.m=Spectral absorption peak wave length (nm) of the colored magenta dye.lambda.y=Spectral absorption peak wave length (nm) of the colored yellow dyeIn the color print, improvement of the color reproduction and improvement of the observation light source dependency, which hitherto tend to conflict with each other, can be attained at the same time.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: July 2, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazunori Hasebe, Koji Takahashi
  • Patent number: 5021326
    Abstract: A process for processing a color photography silver halide recording material by development, bleach-fixing and stabilization or washing, wherein the silver halide emulsion layers of the photographic material have a chloride content of at least 80 mol %, the total processing time is not more than 60 seconds, the concentration of halide in the developing bath in the use state does not exceed 10.sup.-2 mol/l, the chloride content of the halide in the developing bath being at least 80 mol %, and the processing baths are replenished during continuous operation, provides results of good quality such as are otherwise obtained only by processing over a total period of at least 180 seconds.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: June 4, 1991
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Heinz Meckl, Karl-Heinz Reuter, Rudolf Tromnau
  • Patent number: 5013633
    Abstract: A method of preparing a color proof from a silver halide color photographic light-sensitive material and a black-and-white halftone dot image is disclosed, wherein said light-sensitive material has on a support the photographic component layers including silver halide emulsion layers each having different spectral sensitivities, and one of said silver halide emulsion layers comprises a magenta coupler represented by Formula M-I; ##STR1## wherein Z represents a group of non-metal atoms necessary to form a nitrogen-containing heterocyclic ring including a substituted one; X represents one selected from the group consisting of a hydrogen atom and a group capable of splitting off upon a reaction with an oxidized product of a developer; and R represents one selected from the group consisting of a hydrogen atom and a substituent.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 7, 1991
    Assignee: Konica Corporation
    Inventors: Tomomi Yoshizawa, Keiji Ogi, Nariko Kimura
  • Patent number: 5006437
    Abstract: A process for forming a color image is disclosed. In the process a photographic material which comprises a light-sensitive silver halide emulsion layer containing a 2,5-diacylaminophenol-based cyan coupler at a ratio of over 50 mol % of the total cyan coupler is processed with a color developer containing a color developing agent represented by Formula I at a ratio of over 55 mol % of total developing agent in the color developer, ##STR1## wherein R.sub.1 and R.sub.2 independently represent a substituted or unsubstituted alkyl group, and R.sub.1 and R.sub.2 may link together to form a ring.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: April 9, 1991
    Assignee: Konica Corporation
    Inventors: Tomomi Yoshizawa, Nariko Kimura
  • Patent number: 5006438
    Abstract: A process for processing a silver halide color photographic material is disclosed which comprises processing a silver halide color photographic material containing at least one compound represented by formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.2 each represents an aliphatic group, an aromatic group, or a heterocyclic group; A represents a group forming a chemical bond by reaction with an aromatic primary amine color developing agent; n represents 0 or 1; X represents a group released on reaction with an aromatic primary amine color developing agent; B represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, or a sulfonyl group; and Y represents a group accelerating the addition of an aromatic primary amine color developing agent to the compound of formula (II), and said R.sub.1 and X or said Y and R.sub.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: April 9, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Makoto Umemoto, Nobuo Sakai, Genichi Furusawa
  • 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: 5004675
    Abstract: A method for processing a silver halide color photosensitive material is disclosed.The process step comprises developing a color photographic light-sensitive material composed of a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide containing at least 80 mol % silver chloride; at least one emulsion layer thereof containing a dispersion of a mixture of (i) at least one oil-soluble non-diffusible cyan coupler capable of forming a substantially non-diffusible cyan dye by coupling with the oxidized form of a developing agent, and (ii) a water-insoluble polymer;in a color developer solution comprising a primary amine color developing agent, and having a chloride ion concentration of from 3.5.times.10.sup.-2 to 1.5.times.10.sup.-1 mol/l, and a bromide ion concentration of from 3.0.times.10.sup.-5 to 1.0.times.10.sup.-3 mol/l.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: April 2, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Yoneyama, Osamu Takahashi, Kazuaki Yoshida, Takatoshi Ishikawa
  • Patent number: 5004676
    Abstract: A new process for maintaining the properties of the developer in the preparation of colored images by development of exposed silver halide-containing material at an alkaline pH in a developer bath containing p-phenylenediamine derivative and at least 40 mol-% of the silver halide consisting of silver chloride and replenishing the color developer in the bath in such a limited quantity that no overflow occurs but it is sufficient to make up for the loss of bath constituents.This process preserves the sensitive results from development during use of the developer bath.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: April 2, 1991
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Heinz Meckl, Sieghart Klotzer, Erich Wolff, Helmut Haseler
  • Patent number: 5002862
    Abstract: A method for processing a silver halide color photographic material is described, comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein after imagewise exposure, said silver halide color photographic material is processed with a color developer containing at least one aromatic primary amine developing agent and at least one compound capable of releasing the aromatic primary amine developing agent which has substantially no developing agent ability prior to the release of the aromatic primary amine developing agent.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: March 26, 1991
    Assignee: Fuji Photo Film Co.
    Inventors: Morio Yagihara, Takatoshi Ishikawa, Hiroshi Fujimoto
  • 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: 4997749
    Abstract: True-to-type development without any overflow is achieved with a developer solution system of a refill solution and--replenished therewith--a ready-to-use developer solution which contains the following constituents in the quantities indicated per liter aqueous solution and, optionally, other typical consituents:3-15 g of the following color developer compound ##STR1## or a corresponding quantity of salts thereof, 8-35 g PO.sub.4.sup.3 ions,at least 0.2 g antioxidant and2.1-4.2 g KBrand which is adjusted to a pH value of 10.5 to 12.5, the regeneration quota amounting to between 50 and 120 ml/m.sup.2 developed material and the refill solution containing the individual constituents in a such a concentration that, for the above-mentioned regeneration quota, the in-use developer solution always contains the constituents shown above in the quantities indicated.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: March 5, 1991
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Ubbo Wernicke, Herbert Mitzinger
  • Patent number: 4994345
    Abstract: A method for making a color proof in a photo-mechanical process. The method comprises a step for exposing a silver halide color photographic light-sensitive material to light through a black-and-white halftone dot image, and a step for developing said silver halide color photographic light-sensitive material with a color developer. The photographic material is comprised of at least three silver halide emulsion layers which are different from each other in spectral sensitivity thereof, and at least one of these silver halide emulsion layers contains a specific yellow coupler and the color developer contains a specific color developing agent. A halftone color image having a color tone similar to that of image printed with printing inks can be obtained by the simplified process.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: February 19, 1991
    Assignee: Konica Corporation
    Inventors: Tomomi Yoshizawa, Keiji Ogi, Nariko Kimura
  • 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: 4983504
    Abstract: A method for processing photographic silver halide color negative film and color negative paper each through its own color developing solutions wherein the paper color developing solution is replenished and the overflow from this replenished solution is used to replenish the film color developing solution and wherein (a) the color paper is based on substantially pure silver chloride emulsions and contains no more than 1% molar silver bromide based on total silver halide and (b) both color developing solutions and the replenisher are free from benzyl alcohol.Apparatus for carrying out the above-described method comprises a series of processing stations and means for advancing the photographic material being processed through the apparatus wherein there is provided means for collecting the overflow from the paper developer station and means for passing it directly or indirectly to the film processing station.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: January 8, 1991
    Assignee: Eastman Kodak Company
    Inventors: Peter D. Marsden, John R. Fyson, Peter J. Twist
  • Patent number: 4975357
    Abstract: Hydroxylamine compounds are commonly included in photographic color developing solutions to retard aerial oxidation. When the photographic element processed in the color developing solution is one which contains an aromatic polyhydroxy compound which serves as a stabilizing addendum, there will be a build-up of the level of such compound in the developing solution as seasoning occurs. Also, as a consequence of seasoning, there is a gradual build-up of the level of trace metal impurities in the solution. Interaction of a trace metal impurity with the aromatic polyhydroxy compound can form a metal-complex which catalyzes the oxidation of the hydroxylamine compound and thereby renders it ineffective for its intended purpose. In the improved method of this invention, the color developing solution is protected against the unwanted metal-complex catalyzed oxidation by incorporation therein of an aminopolycarboxylic acid sequestering agent.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: December 4, 1990
    Assignee: Eastman Kodak Company
    Inventors: Jean M. Buongiorne, Janet M. Huston, Paul A. Schwartz, Sheridan E. Vincent
  • Patent number: 4968588
    Abstract: A method for processing a silver halide color photographic material is described, which comprises processing a silver halide color photographic material comprising a reflective support having thereon at least one silver halide emulsion layer for a period of 2 minutes and 30 seconds or less with a color devleoping solution which does not substantially contain benzyl alcohol and which contains at least one of compounds selected from the group consisting of a compound represented by formula (I), a compound represented by formula (II), hydantoic acid, allylamine, aminoguanidine, o-aminobenzoic acid, L-(+)-cysteine, benzylamine, DL-serine, morpholine, N-hydroxyethyl morpholine, o-aminobenzyl alcohol, quinuclidine, or salts thereof, tetramethylammonium acetate, choline, or choline chloride, ##STR1## wherein R.sup.1 represents a hydroxyalkyl group having from 2 to 10 carbon atoms; and R.sup.2 and R.sup.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: November 6, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Morio Yagihara
  • Patent number: 4966834
    Abstract: A method of processing a silver halide color photographic material by the steps of (a) developing an imagewise exposed silver halide color photographic material with a color developing solution substantially free from sulfite ions; and (b) immediately contacting the developed silver halide color photographic material with a bleach-fixing solution containing at least one of (i) from 1.times.10.sup.-2 mol to 2 mol of bromide ions and (ii) from 5.times.10.sup.-4 mol to 5.times.10.sup.-2 mol of iodide ions per liter.In accordance with the method of the invention, silver removal is fully accomplished and the formation of leuco dye is prevented even in rapid processing. Further, the formation of color stain is also prevented.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: October 30, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Shinji Ueda
  • Patent number: 4965175
    Abstract: A method for continuous processing of a silver halide color photosensitive material is disclosed. The process steps comprise developing a color photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide comprising at least 80 mol % silver chloride, in a color developer solution containing a chloride ion concentration of from 3.5.times.10.sup.-2 to 2.0.times.10.sup.-1 mol/l, said developing step being conducted in a developer bath having a bath opening ratio (S/V) of at most 0.015 cm.sup.-1 wherein S is air-contacting area of the bath in cm.sup.2 and V is a total volume of the bath in cm.sup.3.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: October 23, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Fujimoto, Kazuaki Yoshida
  • Patent number: 4965176
    Abstract: There is disclosed a method for processing a light-sensitive silver halide color photographic material, characterized in that the light-sensitive silver halide color photographic material contains a core-shell type-internal latent image type silver halide emulsion a shell of which contains at least silver chloride, and the light-sensitive silver halide color photographic material is processed with a color developing solution containing the compound represented by the following formula (A): ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms which may have a substituent or substituents, or R.sub.1 and R.sub.2 may be combined to form a ring, provided that the case where R.sub.1 and R.sub.2 are hydrogen atoms at the same time is excluded.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: October 23, 1990
    Assignee: Konica Corporation
    Inventors: Masao Ishikawa, Satoru Kuse
  • Patent number: 4963475
    Abstract: A method of processing an imagewise exposed light-sensitive silver halide photographic material. The material contains a silver halide emulsion layer containing silver halide grains which are sensitized with a monomethine dye. The material is processed with a developer solution containing an aromatic primary amine color developing agent in the presence of at least one hydroxylamine derivative and at least one nitrogen containing heterocyclic mercapto compound.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: October 16, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Murai, Keiji Ohbayashi, Kaoru Onodera
  • Patent number: 4960684
    Abstract: A silver halide color photographic material is processed with a color developer containing at least one compound of the following formula (I) and at least one compound of the following formula (II): ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group;R.sup.4 represents a hydrogen atom, a hydroxyl group, a hydrazino group, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, a carbamoyl group or an amino group;X.sup.1 represents a divalent group;n represents 0 or 1; and when is 0, R.sup.4 represents an alkyl group, an aryl group or a heterocyclic group; and R.sup.3 and R.sup.4 may together form a heterocyclic group; ##STR2## where Z represents an atomic group necessary for completing an aromatic nucleus.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: October 2, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Hiroshi Fujimoto, Morio Yagihara, Kazuto Andoh
  • 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: 4948713
    Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: August 14, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Satoru Kuse, Masao Ishikawa
  • Patent number: 4937178
    Abstract: The present inventions relate to a processing method for processing, with a developing time of not more than 180 seconds, a silver halide color photographic light-sensitive material comprising a support, provided thereon, with at least one silver halide emulsion layer, and at least one emulsion layer containing silver iodo-bromide with not less than 0.5 mole% of silver iodine, in particular to an active processing method wherein, a light-sensitive material B not only containing silver iodo-bromide with an iodine content of not less than 0.5 mole% but also a magenta coupler and providing a maximum magenta density, after exposed, and being capable of only satisfying the maximum magenta dye density M of M<2.0 if exposed under specific conditions and then subjected to color developing of a duration of three minutes 15 seconds at 38.degree. C. with a specific developer solution, is capable of offering a maximum magenta density satisfying M.gtoreq.2.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: June 26, 1990
    Assignee: Konica Corporation
    Inventors: Shigeharu Koboshi, Satoru Kuse, Masayuki Kurematsu, Moeko Hagiwara
  • Patent number: 4920041
    Abstract: A method for processing a silver halide color photographic material comprising a reflective support having thereon at least one light-sensitive silver halide emulsion layer containing a color coupler or color couplers, which comprises the step of, after imagewise exposing, developing said silver halide color photographic material with a color developing solution which does not substantially contain benzyl alcohol and which contains an aromatic primary amine color developing agent represented by formula (A): ##STR1## wherein X represents a compound capable of forming a salt with a primary amine; and a compound represented by formula (I): ##STR2## wherein R.sup.1 represents a hydrogen atom or a substituted or unsubstituted alkyl, aryl, alkoxy, aryloxy or amino group; and R.sup.2 represents a hydrogen atom or a substituted or unsubstituted alkyl or aryl group; or R.sup.1 and R.sup.2 may be bonded to each other to form a carbon ring or a hetero-ring.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: April 24, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobutaka Ohki, Kazuto Andoh, Takatoshi Ishikawa
  • Patent number: 4920042
    Abstract: A color image-forming process of developing a color photographic paper having on a support silver halide emulsion layer(s) containing a monodispersed silver chlorobromide emulsion having a deviation coefficient of not more than 20% and a color coupler, said emulsion being spectrally sensitized by at least one of the compounds represented by general formulae (I), (II), (III) and (IV) defined in this invention, using a color developer containing substantially no benzyl alcohol for a period of time of not more than 2 minutes and 30 seconds.In processing the aforesaid color photographic paper, even when the color paper is procesed using a color developer containing no benzyl alcohol, which caused pollution problems, in a short processing time of not more than 2 minutes and 30 seconds, stable color images having less formation of fog and high color density are obtained.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: April 24, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kokichi Waki, Masahiro Asami, Yoshinori Shibata
  • Patent number: 4906554
    Abstract: This invention relates to a color developing solution for processing of a light-sensitive silver halide color photographic material which comprises containing a compound represented by the following formula [I] and at least one compound selected from a compound represented by the following formula [II] and a compound represented by the following formula [III], and a processing method of a light-sensitive silver halide color photographic material, which comprises, after imagewise exposure of a light-sensitive silver halide color photographic material, carrying out processing including at least a color developing step, wherein the light-sensitive silver halide color photographic material has silver halide emulsion layers containing silver halide grains substantially comprised of silver chloride, and a color developing solution used in the color developing step contains the compound represented by the following formula [I] and at least one compound selected from the compound represented by the following formula
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: March 6, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Ishikawa, Shigeharu Koboshi, Kazuhiro Kobayashi, Keiji Ohbayashi, Mitsuhiro Okumura, Shigeo Chino, Kaoru Onodera
  • Patent number: 4900651
    Abstract: A method for processing a silver halide color photographic material is disclosed, which comprises developing a silver halide color photographic material with a color developer comprising:(a) an aromatic primary amine color developing agent;(b) at least one brightening agent represented by formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydroxyl group, an alkoxy group, an amino group, an alkylamino group, an aryloxy group or an arylamino group; provided that R.sub.1 is not the same as R.sub.3 when R.sub.2 is the same as R.sub.4, and R.sub.1 is not the same as R.sub.4 when R.sub.2 is the same as R.sub.3 ; and M represents a monovalent cation; and(c) at least one organic phosphonic acid series chelating agent.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: February 13, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Hiroshi Fujimoto
  • Patent number: 4898807
    Abstract: A method for forming a direct positive color image by subjecting an inner latent image type light-sensitive silver halide color photographic material for formation of a direct positive color image, having at least one light-sensitive emulsion layer containing inner latent image type silver halide grains which have not been previously fogged on the grain surfaces to color developing processing after image exposure, which comprises developing an inner latent image type light-sensitive silver halide color photographic material for formation of a direct positive color image wherein a silver halide emulsion in at least one light-sensitive emulsion layer consists substantially of a silver chlorobromide emulsion with the use of a color developing solution containing an N-hydroxyalkyl-substituted-p-phenylenediamine derivative at 30.degree. C. or higher for not longer than 150 seconds.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: February 6, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Kazuyoshi Miyaoka
  • Patent number: 4897339
    Abstract: A method for processing a silver halide color photographic material including a step of developing the material with a developer containing an aromatic primary amine color developing agent and at least one compounds represented by the following general formulae (Ia) and (Ib): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents a hydrogen atom or an unsubstituted alkyl group; R.sup.5, R.sup.6 and R.sup.7, which may be the same or different, each represents an unsubstituted alkylene group; X.sup.1 and X.sup.2, which may be the same or different, each represents ##STR2## --O--, --S--, --CO--, --SO.sub.2 or --SO--, or a combination thereof, and R.sup.8 represents a hydrogen atom or an unsubstituted alkyl group; and m and n, which may be the same or different, each is 0, 1, 2 or 3; and ##STR3## wherein R.sup.13 represents a substituted alkylene group; and R.sup.9, R.sup.10, R.sup.11 and R.sup.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: January 30, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuto Andoh, Takatoshi Ishikawa, Morio Yagihara
  • Patent number: 4892804
    Abstract: Photographic color developing compositions which are especially useful in the processing of high chloride silver halide photographic elements are free, or at least substantially free, of bromides; optionally contain a small amount of sulfite; and comprise (1) a primary aromatic amino color developing agent, (2) an N,N-dialkylhydroxylamine, (3) at least one sequestering agent which functions to sequester iron and (4) at least one sequestering agent which functions to sequester calcium. The developing compositions exhibit excellent stability. They also provide minimal development restraint which permits the use of very short development times, as needed for rapid access processing.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: January 9, 1990
    Assignee: Eastman Kodak Company
    Inventors: Sheridan E. Vincent, Richard W. Berls
  • Patent number: 4892803
    Abstract: A color image-forming process which comprises developing, after imagewise exposure, a color photographic paper having at least one light-sensitive layer containing a core/shell surface latent image type monodispersed silver halide emulsion containing substantially no silver iodide, having a silver chloride content of up to 80 mol %, and having a silver bromide content in the shell portion lower than in the core portion with a color developer containing substantially no benzyl alcohol.When the color photographic paper described above is processed, color images having less fog can be obtained with high color density in a short time without using benzyl alcohol as a development accelerator, with the benzyl alcohol causing a pollution problem.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: January 9, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kokichi Waki, Kazunori Hasebe, Masahiro Asami
  • Patent number: 4882264
    Abstract: A color developer composition that maintains developer activity in all color forming layers and increases developer capacity is disclosed. The color developer composition allows use of reduced temperature, process time, replenishment rate, or concentration of developing agent without causing color imbalance. The composition employs two or more different color developing agents in combination. Each agent in a composition is selected from the group consisting of p-amino-N-dialkylanilines and the salts thereof. The composition of the present invention may be employed in conventional color developing processes without any significant change in conventional processing procedures and steps.
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: November 21, 1989
    Assignee: Olin Hunt Specialty Products Inc.
    Inventors: Hongzoon Kim, Edward C. Saunders, Harris Miller
  • Patent number: 4855218
    Abstract: A method for processing silver halide photographic lightsensitive material in which there are used replenishers for water washing and/or stabilization processes in such manner that the concentrations of calcium and magnesium compounds present in the replenishers are not more than 5 mg/l on the basis of elemental calcium and magnesium respectively, and a part or whole of the overflow from the water washing and/or stabilization process is introduced into a process preceding the water washing and/or stabilization processes. This method makes it possible to save water, to diminish the amount of waste liquor and to make effective use of components contained in processing solutions, without impairing any properties of lightsensitive materials to be processed.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: August 8, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Akira Abe
  • Patent number: 4853318
    Abstract: A process for processing color photographic papers using a color developer substantially free from benzyl alcohol and containing a compound represented by formula (I) ##STR1## wherein Z represents an atomic group forming an aromatic nucleus is disclosed. In the process, the formation of color stains is greatly reduced even in the case of shortening the processing times for the blix step and the wash and/or stabilization step after color development.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: August 1, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Fujita, Hiroshi Fujimoto, Takatoshi Ishikawa, Shinzo Kishimoto
  • Patent number: 4853321
    Abstract: A method of forming a color image and a silver halide color photographic material comprising a reflective support having thereon at least one light-sensitive layer containing at least one coupler which forms a dye upon a coupling reaction with an oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion which contains at least 80% by mol of silver chloride and substantially no silver iodide the method comprising processing with a color developing solution which contains not more than 0.002 mol of a bromine ion per liter and substantially no benzyl alcohol for a development time of not more than 2 minutes and 30 seconds in the presence of at least one compound represented by the following formulae (I), (II), or (III), as defined in the specification.The method of forming a color image and the silver halide color photographic material according to the present invention enable rapid processing to be conducted while controlling the fog formation with high sensitivity.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: August 1, 1989
    Assignee: Fuji Photo Film, Co., Ltd.
    Inventors: Yasuhito Momoki, Masahiro Asami, Nobuo Sakai, Shigeaki Otani
  • 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: 4851325
    Abstract: A process for processing silver halide color photographic materials, which comprises processing, after image-wise exposure, a silver halide color photographic material with a color developer containing an aromatic primary amine color developing agent and a compound represented by the following general formula (I): ##STR1## wherein n represents an integer of at least 1; R represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group or the n-valent groups corresponding to the groups when n represents an integer of at least 2; and A represents an organic group containing a carbon atom, an oxygen atom, a nitrogen atom, or a sulfur atom and forms a saturated or unsaturated 3- to 8-membered ring with the nitrogen atom, said A is substituted or unsubstituted and may be condensed with a benzene ring or a heterocyclic ring.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: July 25, 1989
    Assignee: Fuji Photo Film Co., Inc.
    Inventors: Kiyoshi Morimoto, Hideaki Naruse
  • Patent number: 4842993
    Abstract: A method for processing a silver halide color photographic material is described, which comprises treating said material after imagewise exposure with a color developer containing an aromatic primary amine developing agent and at least one compound represented by formula (I) ##STR1## in which X.sub.1 and X.sub.2 each represents a divalent organic group. In accordance with this method, the stability and color-forming capacity of the color developer are remarkably improved, the increment of fog during continuous processing of photographic material is greatly reduced, and the color developer need not substantially contain benzyl alcohol.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: June 27, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Hiroshi Fujimoto, Takatoshi Ishikawa, Kazuto Andoh
  • Patent number: 4840878
    Abstract: A method for forming a color image is disclosed, which comprises imagewise exposing a multi-layer silver halide color photographic material comprising a reflective support having provided thereon at least three silver halide emulsion layers different in color sensitivity, each of which separately contains at least one coupler selected from a specific combination of cyan, magenta, and yellow couplers, and processing the exposed material with a color developing solution containing substantially no benzyl alcohol for a period of not more than 2 minutes and a half. A color image excellent in color reproducibility and preservability can be obtained rapidly without using benzyl alcohol.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: June 20, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Nobuo Furutachi, Kozo Aoki, Kiyoshi Nakazyo, Genichi Furusawa
  • Patent number: 4839263
    Abstract: A silver halide photographic material containing a support and, provided thereon, at least one silver halide emulsion layer, this silver halide emulsion layer containing silver halide grains containing 90 mol % or more of silver chloride, a dye-forming coupler, and a compound represented by general formula [S]; ##STR1## wherein Q is a group of atoms necessary to complete a 5- or 6-membered heterocyclic ring or a 5- or 6-membered ring fused with a benzene ring and M is a hydrogen atom, an alkali metal or an ammonium group;the silver halide layer having been hardened by a hardener represented by formula [HDA] or [HDB]; ##STR2## wherein Rd.sub.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: June 13, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masanobu Miyoshi, Makoto Kajiwara, Kaoru Onodera, Eiichi Sakamoto
  • Patent number: 4837139
    Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: June 6, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Satoru Kuse, Masao Ishikawa
  • Patent number: 4837132
    Abstract: A method is described for processing a silver halide color photographic material after imagewise exposure, comprising color developing, desilvering, and at least one of washing and stabilizing a silver halide color photographic material, wherein a color developer which does not substantially contain benzyl alcohol but comprises at least one compound represented by formula (I) ##STR1## wherein M.sup.1, M.sup.2, M.sup.3 and M.sup.4 each represents a hydrogen atom, an alkali metal ion, an ammonium ion, or 1/n of an n-valent cation is used for the color development.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: June 6, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Fujimoto, Takatoshi Ishikawa
  • Patent number: H809
    Abstract: A method for processing a silver halide color photographic material containing at least one pyrazoloazole magenta coupler represented by general formula (I), which comprises processing the light-sensitive material, after imagewise exposure, with a color developer containing an aromatic primary amine color developing agent and at least one member selected from among hydrazines and hydrazides represented by general formula (II): ##STR1## wherein R.sub.11 represents a hydrogen atom or a substituent, X represents a hydrogen atom or a group capable of being eliminated by a coupling reaction with an oxidation product of an aromatic primary amine developing agent, Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.N-- or --NH--, provided that one of the Za-Zb bond and the Zb-Zc bond is a double bond and the other is a single bond and, when Zb-Zc is a carbon-to-carbon double bond, it may be a part of an aromatic ring, and a dimer or higher polymer may be formed at R.sub.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: August 7, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuto Andoh, Takatoshi Ishikawa, Hiroshi Fujimoto, Morio Yagihara