Patents Examined by Mary F. Downey
  • Patent number: 4668613
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a polymer coupler which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is polymerized using a polymerization initiator represented by the following general formula (I): ##STR1## wherein R.sub.1 represents a straight chain or branched chain alkyl group having from 1 to 5 carbon atoms; an R.sub.2 represents a straight chain or branched chain alkyl group having from 1 to 20 carbon atoms.The polymer coupler according to the present invention has a good stability to humidity and heat during storage of the silver halide color photographic light-sensitive material containing thereof and provides decreased formation of fog in non-image areas of color photographs obtained by means of color development processing of the silver halide color photographic light-sensitive material.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: May 26, 1987
    Assignee: Fuji Photo Film Co. Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Tatsuya Yamamoto, Kei Sakanoue
  • Patent number: 4663274
    Abstract: A method for forming photosensitive silver halide grains which comprises coalescing a fine-grain silver halide emulsion layer carried on a substantially planar surface of a support.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: May 5, 1987
    Assignee: Polaroid Corporation
    Inventors: Warren D. Slafer, Vivian K. Walworth
  • Patent number: 4623617
    Abstract: A silver halide color photographic material is disclosed, said material containing a magenta color image-forming coupler represented by the following formula (I) and a compound represented by the following formuls (XI): ##STR1## wherein Z represents the group of nonmetallic atoms necessary for forming a nitrogen-containing heterocyclic ring, provided that the ring to be formed by said Z may have a substituent;X represents a hydrogen atom or a substituent capable of leaving upon reaction with the oxidized product of a color developing agent; andR represents a hydrogen atom or a substituent. ##STR2## wherein R.sup.1 and R.sup.4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group, an alkenyloxy group, a hydroxy group, an aryl group, an aryloxy group, an acyl group, an acylamino group, an acyloxy group, a sulfonamido group, a cycloalkyl group or an alkoxycarbonyl group;R.sup.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: November 18, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yutaka Kaneko, Kenji Kadokura, Toshihiko Kinura
  • Patent number: 4621047
    Abstract: A method for processing a color photographic light-sensitive material comprising subjecting an imagewise exposed silver halide color photographic light-sensitive material to color development processing, then to processing with a bleaching solution and thereafter to separately, fixing processing wherein the silver halide color photographic light-sensitive material contains a cyan dye forming coupler represented by the general formula (I-a) or (I-b) described below, the bleaching solution contains a compound represented by the general formula (II-a) or (II-b) described below and the processing time for the bleaching solution is substantially not more than 2 minutes and 30 seconds, ##STR1## wherein R.sup.1, R.sup.2 and R.sup.4 each represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; R.sup.3 and R.sup.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: November 4, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Akira Abe, Shigeru Ohno
  • Patent number: 4621041
    Abstract: Disclosed is a method for plate-making which comprises imagewise exposing by scanning type flash exposure a lithographic printing plate comprising a support and at least a silver halide emulsion layer containing at least 70 mol % of silver chloride and prepared with addition of a water soluble iridium compound during emulsification or physical ripening of silver halide and a water soluble gold compound at any time before coating of the emulsion and thereafter subjecting the exposed emulsion to diffusion transfer development.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: November 4, 1986
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Masahiko Saikawa, Eiji Kanada, Kazunaka Endo
  • Patent number: 4619886
    Abstract: A process for forming a high contrast negative image by developing an exposed substantial surface latent image type silver halide photographic light-sensitive material in the presence of hydrazines, which comprises using a developing solution having a pH value of 10.5 to 12.3 and containing at least(1) a developing agent,(2) 0.25 mol/l or more of sulfite, and(3) a compound represented by the following general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, which may be the same or different, each represents a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group or a substituted alkyl group. According to the process, the development processing time required is shortened in the case of forming a high contrast negative image with a stable developing solution using hydrazines.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: October 28, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Eiichi Okutsu
  • Patent number: 4619889
    Abstract: An image forming method which comprises copying an original on a photosensitive material employing a direct reversal photographic emulsion is disclosed. The method comprises conducting ordinary exposure when the original image is a positive image and conducting exposure at high illuminance when the original image is a negative image. Thereby, it is possible to obtain a direct positive image from either the original positive or original negative image. The process is greatly advantageous with respect to forming positive images since the process can be utilized to obtain positive images regardless whether the original image is positive or negative.
    Type: Grant
    Filed: January 24, 1984
    Date of Patent: October 28, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideo Yuyama, Motohiko Tsubota
  • Patent number: 4618573
    Abstract: A silver halide color photographic material containing a hardener capable of exerting a hardening effect through activation of a carboxyl group and a magenta coupler of the pyrazoloazole type, whereby lowering of color density of magenta images due to use of rapidly acting hardeners can be prevented.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: October 21, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Okamura, Hidetoshi Kobayashi, Toshihiro Nishikawa, Koji Tamoto
  • Patent number: 4618571
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, the color photographic light-sensitive material containing a coupler which releases a compound after the coupling reaction with the oxidation product of a developing agent, the released compound being capable of releasing further a photographically useful group by an oxidation-reduction reaction with the oxidation product of another developing agent. The compound used in the present invention is chemically stable and can release a photographically useful group under control; therefore the silver halide color photographic light-sensitive material containing the compound has good stability during storage and high sensitivity and provides a color image having good image qualities such as sharpness, graininess, color reproducibility, etc.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: October 21, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiji Ichijima, Hideo Usui, Naoyasu Deguchi
  • Patent number: 4615971
    Abstract: Developer compositions which contain a hydrolyzed polymaleic acid anhydride having improved protection against precipitation of calcium compounds.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: October 7, 1986
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventor: Helmut Haseler
  • Patent number: 4614711
    Abstract: A silver halide emulsion containing negative working silver halide grains each comprising a core of silver bromide or silver bromoiodide, a first coating layer exterior the core of silver iodide or silver bromoiodide, and a second coating layer exterior the first coating layer composed of silver bromide or silver bromoiodide different from that of the first coating layer in halide composition, and having a projected area diameter-to-thickness ratio of less than 5, in which:(1) the first coating layer contains more iodide than the core by 10 mol % or more; and(2) silver in the first coating layer accounts for 0.01 to 30 mol % of the total silver in the grain.
    Type: Grant
    Filed: August 8, 1984
    Date of Patent: September 30, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadao Sugimoto, Toshiaki Hayakawa
  • Patent number: 4614707
    Abstract: A color reversal photographic light-sensitive materials comprising a base having thereon (a) at least one light-sensitive silver halide emulsion layer containing a dye forming coupler and (b) a silver halide emulsion layer substantially without light-sensitivity provided adjacent to said light-sensitive layer, or (a) at least one light-sensitive silver halide emulsion layer containing a dye forming coupler, (b) a silver halide emulsion layer substantially without light-sensitivity to light, and (c) an intermediate layer therebetween, wherein said intermediate layer or said silver halide emulsion layer substantially without light-sensitivity, or both said intermediate layer and said silver halide emulsion layer substantially without light-sensitivity contain at least one compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom or a group having 1 to 10 carbon atoms capable of being hydrolyzed with alkali, R.sup.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: September 30, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Munehisa Fujita, Yasuhiro Hayashi, Takashi Ozawa, Nobutaka Ohki
  • Patent number: 4614709
    Abstract: A silver halide photographic light-sensitive material having a support with at least one silver halide emulsion layer is provided. The silver halide emulsion layer containing in combination at least one yellow dye image-forming coupler of Formula I and at least one high-boiling organic solvent of Formula II to reduce the light discoloration of a yellow dye image.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: September 30, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Sasaki, Kaoru Onodera
  • Patent number: 4614710
    Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed, wherein at least one of said silver halide emulsion layers contains a cyan coupler of formula (I) in combination with a cyan coupler of formula (II): ##STR1## (wherein R.sub.1 is an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group; R.sub.2 is a halogen atom or a monovalent organic group; m is an integer of 0 to 4, provided that when m is 2 or more, R.sub.2 may be the same or different; R.sub.3 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; W is an alkylsulfonamido group, an arylsulfonamido group, an alkylsulfamoyl group or an arylsulfamoyl group; R.sub.4 is an alkylene group; X is a divalent group; l is 0 or a positive integer; Z.sub.1 is a hydrogen atom or a group capable of leaving upon reaction with the oxidized product of an aromatic primary amine color developing agent); ##STR2## (wherein R.sub.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 30, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4613564
    Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed, wherein at least one of said silver halide emulsion layers contains a cyan coupler of formula (I) in combination with a cyan coupler of formula (II) ##STR1## (wherein R.sub.1 is a ballast group; R.sub.2 is a halogen atom or a monovalent organic group; m is an integer of 0 to 4, provided that when m is 2 or more, R.sub.2 may be the same or different; R.sub.3 is a hydrogen atom or a halogen atom; W is a halogen atom or an alkyl group; and Z.sub.1 is a hydrogen atom or a group capable of leaving upon reaction with the oxidized product of an aromatic primary amine color developing agent); ##STR2## (wherein R.sub.4 is an alkyl or alkoxy group; n is an integer of 0 to 5, provided that when n is 2 or more, R.sub.4 may be the same or different; R.sub.5 is an alkylene group; R.sub.6 is an alkyl group; R.sub.7 is a hydrogen atom, a halogen atom or an alkyl group; and Z.sub.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 23, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4613562
    Abstract: Disclosed is a process for replenishing a color developing solution by using a replenisher composition comprising at least two separate solutions of a solution dissolving an alkaline substance and a solution to which there has been added an alkali-cleavable water-soluble salt of a poorly soluble alcohol.According to the process of the present invention, a poorly soluble alcohol can be dissolved uniformly, easily and within a short time in the replenishment of a color developing solution. The present process can realize a compact AR system without any necessity of a mixing device and so on.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: September 23, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Kuse, Shigeharu Koboshi, Kazuhiro Kobayashi
  • Patent number: 4613565
    Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed, wherein at least one of said silver halide emulsion layers contains a cyan coupler of formula (I) in combination with a cyan coupler of formula (II): ##STR1## (wherein R.sub.1 is a ballast group; R.sub.2 is a halogen atom or a monovalent organic group; R.sub.3 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; W is an alkyl-sulfonamido group, an arylsulfonamido group, an alkylsulfamoyl group or an arylsulfamoyl group; m is an integer of 0 to 4, provided that when m is 2 or more, R.sub.2 may be the same or different; and Z.sub.1 is a hydrogen atom or a group capable of leaving upon reaction with the oxidized product of an aromatic primary amine color developing agent); ##STR2## (wherein R.sub.4 is an alkyl or alkoxy group; n is an integer of 0 to 5, provided that when n is 2 or more, R.sub.4 may be the same or different; R.sub.5 is an alkylene group; R.sub.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 23, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4610958
    Abstract: A process of preparing a silver halide emulsion comprising mixing a water-soluble silver salt solution with a water-soluble halide solution in the presence of a protective colloid. Silver halide grains are formed which are octahedral or tetra decahedral silver iodobromide containing at least 4 mol % silver iodide. A tetrazaindene compound is added to the mixture before the completion of the addition of the silver salt solution.
    Type: Grant
    Filed: December 5, 1984
    Date of Patent: September 9, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shoji Matsuzaka, Shinya Shimura
  • Patent number: 4610949
    Abstract: Disclosed is a method for the direct making of printing plates for multicolor lithography capable of faithfully reproducing repeatedly continuous gradation multicolor original, which comprises using color separation filters for at least blue, green, and, red and repeating a sequence of the steps of shielding an exposure section against light by a light shielding means; feeding to said exposure section a magazine containing a sensitive material convertible into lithographic printing plate, which material bears a panchromatically sensitized photographic layer; bringing said sensitive material into close contact with a contact screen; exposing said sensitive material through a lens and a color separation filter to the reflected light from a continuous gradation multicolor original; and sending the exposed sensitive material to a processing bath section.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: September 9, 1986
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Eiji Kanada, Kazunaka Endo, Kyonosuke Yamamoto, Shigeyoshi Suzuki
  • Patent number: 4609613
    Abstract: Permanent gray-scale reproductions including half-tone images. A refractory background region bears refractory thin-film dichroic filter means patterned to conform to the reproduced half-tone image. Preferred background region materials include metals, semiconductors, and ceramics; the thin-film materials are preferably oxides or nitrides of metals and semiconductors. If the refractory materials are appropriately selected, the reproductions are highly resistant to chemical and thermal deterioration and should have useful lives in the hundreds of thousands of years.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: September 2, 1986
    Assignee: Permanent Images, Inc.
    Inventors: George R. Cogar, Robert E. Markle