Patents Assigned to Oji-National Co., Ltd.
  • Desensitizing gum for lithographic printing plate comprising a polybasic and monoester of polysaccharide
    Patent number: 4840875
    Abstract: An emulsion type desensitizing gum comprises at least one polybasic acid monoester derivative of polysaccharide. The desensitizing gum exhibits high shelf stability and the lithographic printing plate to which the desensitizing gum has been applied hardly causes the background contamination of printed matters and is excellent in both the ink receptivity of the image areas and the desensitizing ability of the non-image areas.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: June 20, 1989
    Assignees: Fuji Photo Film Co., Ltd., Oji-National Co., Ltd.
    Inventors: Kenji Kunichika, Hiroshi Matsumoto, Akira Shingu