Patents by Inventor Saburou Hiraoka

Saburou Hiraoka 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).

  • Planographic printing precursor and printing method employing the same
    Patent number: 6749993
    Abstract: Disclosed is a planographic printing plate precursor comprising a support, and provided thereon, an image forming layer, a first outermost layer on the image forming layer side and a second outermost layer on the side of the support opposite the first outermost layer, the first and second outermost layers containing a lubricant component, which is manufactured either by a method comprising the steps of preparing a planographic printing plate precursor comprising a support and provided thereon, an image forming layer so that only the first outermost layer contains a lubricant component and winding the resulting precursor in the roll form, or by a method comprising the steps of preparing a planographic printing plate precursor comprising a support and provided thereon, an image forming layer so that only the second outermost layer contains a lubricant component and winding the resulting precursor in the roll form.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: June 15, 2004
    Assignee: Konica Corporation
    Inventor: Saburou Hiraoka
  • Planographic printing plate precursor having a support with pits
    Patent number: 6688228
    Abstract: Disclosed is a planographic printing plate precursor, comprising a hydrophilic support and an image forming layer containing oleophilic heat-fusible particles, wherein the hydrophilic support has voids and the void content is 20 to 40 ml/m2.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: February 10, 2004
    Assignee: Konica Corporation
    Inventor: Saburou Hiraoka
  • Planographic printing precursor and printing method employing the same
    Publication number: 20030152868
    Abstract: Disclosed is a planographic printing plate precursor comprising a support, and provided thereon, an image forming layer, a first outermost layer on the image forming layer side and a second outermost layer on the side of the support opposite the first outermost layer, the first and second outermost layers containing a lubricant component, which is manufactured either by a method comprising the steps of preparing a planographic printing plate precursor comprising a support and provided thereon, an image forming layer so that only the first outermost layer contains a lubricant component and winding the resulting precursor in the roll form, or by a method comprising the steps of preparing a planographic printing plate precursor comprising a support and provided thereon, an image forming layer so that only the second outermost layer contains a lubricant component and winding the resulting precursor in the roll form.
    Type: Application
    Filed: January 6, 2003
    Publication date: August 14, 2003
    Inventor: Saburou Hiraoka
  • Planographic printing plate precursor and manufacturing method of planographic printing plate
    Publication number: 20020009574
    Abstract: Disclosed is a planographic printing plate precursor, comprising a hydrophilic support and an image forming layer containing oleophilic heat-fusible particles, wherein the hydrophilic support has voids and the void content is 20 to 40 ml/m2.
    Type: Application
    Filed: May 24, 2001
    Publication date: January 24, 2002
    Inventor: Saburou Hiraoka
  • Heat sensitive planographic printing plate, its manufacturing method and image forming method employing the same
    Patent number: 6180213
    Abstract: Disclosed is a heat sensitive planographic printing plate material comprising a support and provided thereon, a heat sensitive layer containing 10 to 98 weight % of at least one hydrophilic resin selected from the group consisting of gelatin, polyvinyl alcohol and carboxymethyl cellulose, and 2 to 50 weight % of a cross-linking agent cross-linking the hydrophilic resin.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: January 30, 2001
    Assignee: Konica Corporation
    Inventors: Takaaki Kuroki, Yasuo Kojima, Saburou Hiraoka, Takeo Akiyama