Patents by Inventor Masayuki Kuroishi

Masayuki Kuroishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5089370
    Abstract: A light-sensitive material comprises a light-sensitive layer containing silver halide, a reducing agent and an ethylenic unsaturated polymerizable compound provided on a paper support (the silver halide and polymerizable compound are contained in microcapsules which are dispersed in the light-sensitive layer). Another light-sensitive material comprises a light-sensitive layer containing a photo polymerizable composition or a photo polymerizable compound provided on a paper support (the photo polymerizable composition or photo polymerizable compound is contained in microcapsules which are dispersed in the light-sensitive layer). The paper support employs a base paper sheet having a void volume of not higher than 40%.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: February 18, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4939063
    Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent and an ethylenic unsaturated polymerizable compound provided on a paper support. The paper support comprises a coating layer containing a hydrocarbon resin provided on a base paper sheet, and the paper support has a low water absorptiveness of not more than 1 g/m.sup.2 on the surface of the coating layer on which the light-sensitive layer is provided. The water absorptiveness being a value measured according to the Cobb test method.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: July 3, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4913999
    Abstract: A light-sensitive material comprises a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a paper support, wherein the paper support comprises a coating layer containing a hydrophobic polymer and a pigment provided on a base paper sheet. The coating layer has a pH value in the range of 4 to 9.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: April 3, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4902600
    Abstract: A light-sensitive material comprises a paper support and a light-sensitive layer containing silver halide grains, a reducing agent and an ethylenic unsaturated polymerizable compound. The silver halide grains and polymerizable compound are contained in microcapsules which are dispersed in the light-sensitive layer. The light-sensitive layer has a pH value of not higher than 8. The paper support has a pH value of from 5 to 9. An image-forming method employing the light-sensitive material is also disclosed.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: February 20, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4876170
    Abstract: A light-sensitive material comprises a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a paper support. Another light-sensitive material comprises a light-sensitive layer containing a photo polymerizable composition or a photo polymerizable compound provided on a paper support. The paper support employs a base paper sheet having such distribution of formation that the total coefficient of variation relating to the distribution curve of laser beam transmittance is not more than 15%. The distribution curve of laser beam transmittance is obtained by helium-neon laser scanning.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: October 24, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi, Tetsuro Fuchizawa
  • Patent number: 4871642
    Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a paper support. A surface of the paper support on which the light-sensitive layer is provided has a low water absorptiveness of not more than 3 g/m.sup.2 which is a value measured according to Cobb test method.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: October 3, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4871643
    Abstract: An image-forming method comprises:imagewise exposing a light-sensitive material comprises a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a support to form a latent image of the silver halide;simultaneously or thereafter developing the light-sensitive material to imagewise polymerize the polymerizable compound; andpressing the light-sensitive material on an image-receiving material comprising an image-receiving layer provided on a paper support to transfer the unpolymerized polymerizable compound to the image-receiving material.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: October 3, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4865941
    Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a paper support. The paper support has a low shrinkage ratio of not more than 0.15% both in the machine direction and in the cross direction. The shrinkage ratio is a value measured at the change of relative humidity from 75% to 60%.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: September 12, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4861696
    Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a paper support. The paper support has a low air permeability of not less than 300 seconds. The air permeability is a time required for 100 ml of air to pass through the paper support of an area of 645 mm.sup.2 at pressure of 567 g.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: August 29, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4814252
    Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a paper support. A surface of the paper support on which the light-sensitive layer is provided has such a smooth surface that the smoothness value in terms of the Bekk Smoothness is not less than 300 seconds. The Bekk Smoothness is a value measured using the Bekk Tester.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: March 21, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigehisa Tamagawa, Masayuki Kuroishi
  • Patent number: 4474872
    Abstract: A method for producing a photographic emulsion is disclosed. The method includes the process of adding a dispersion of a substantially water-insoluble photographic additive to a photographic emulsion. The dispersion being prepared merely by mechanically grinding and dispersing the photographic additive in a form of fine grain having a size of 1.mu. or less in an aqueous system adjusted to a pH value of 6 to 8 and controlled to a temperature of 60.degree. to 80.degree. C. The additive is included in the photographic emulsion without the need of an organic solvent. The emulsion of the invention can be easily and quickly coated to form a uniform layer.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: October 2, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Onishi, Kazutoshi Inada, Nobuaki Miyasaka, Naoyasu Deguchi, Masayuki Kuroishi