Patents by Inventor Yuh Ezumi

Yuh Ezumi 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).

  • Dry planographic printing plate
    Patent number: 4086093
    Abstract: A laminated negative acting presensitized planographic printing plate for use in dry planography having(a) a base layer.(b) a silicone rubber layer overlying the base layer, and(c) a photoadhesive layer overlying the silicone rubber layer comprising at least one photopolymerizable unsaturated compound having a boiling point above 100.degree. C and a photoinitiator.Under exposure to light through a negative transparency, the photoadhesive layer polymerizes in the exposed image area and adheres to the underlying silicone rubber layer, while remaining non-adhesive to the underlying silicone rubber layer in the unexposed non-image area.The unexposed photoadhesive layer only is removed to bare the underlying silicone rubber layer which is made an ink-repellent non-image area and the photoadhesive layer remaining in the exposed area is made an ink-receptive image area.
    Type: Grant
    Filed: August 11, 1976
    Date of Patent: April 25, 1978
    Assignee: Toray Industries, Inc.
    Inventors: Yuh Ezumi, Masaharu Kobayashi, Takashi Kubota, Yoichi Shimokawa
  • Dry planographic printing plate
    Patent number: RE30670
    Abstract: A laminated negative acting presensitized planographic printing plate for use in dry planography having(a) a base layer.(b) a silicone rubber layer overlying the base layer, and(c) a photoadhesive layer overlying the silicone rubber layer comprising at least one photopolymerizable unsaturated compound having a boiling point above 100.degree. C. and a photoinitiator.Under exposure to light through a negative transparency, the photoadhesive layer polymerizes in the exposed image area and adheres to the underlying silicone rubber layer, while remaining non-adhesive to the underlying silicone rubber layer in the unexposed non-image area.The unexposed photoadhesive layer only is removed to bare the underlying silicone rubber layer which is made an ink-repellent non-image area and the photoadhesive layer remaining in the exposed area is made an ink-receptive image area.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: July 7, 1981
    Assignee: Toray Industries, Inc.
    Inventors: Yuh Ezumi, Masaharu Kobayashi, Takashi Kubota, Yoichi Shimokawa