Patents by Inventor Kenzo Isumi

Kenzo Isumi 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: 4549923
    Abstract: A gravure printing cylinder is formed by fitting a printing sleeve over a core roll via a layer of a hotmelt adhesive. A gravure printing surface with ink-retaining cells is formed on the printing sleeve either before or, preferably, after the mounting of the sleeve on the core roll. For assemblage of the printing cylinder the hotmelt is applied in the molten state to at least part of at least either of the opposed surfaces of the printing sleeve and the core roll. Then the printing sleeve is placed over the core roll, preferably while both sleeve and roll are being heated. The printing cylinder can be readily disassemblaged by remelting the hotmelt layer. Also disclosed herein is an apparatus for the assemblage and disassemblage of the printing cylinder, including a roll holder for holding the core roll in an upstanding attitude while the core roll is being heated by a heating medium circulating therethrough.
    Type: Grant
    Filed: August 2, 1983
    Date of Patent: October 29, 1985
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Eiichi Tachibana, Koushou Murayama, Kenzo Isumi
  • Patent number: 4461663
    Abstract: A gravure printing cylinder is formed by fitting a printing sleeve over a core roll via a layer of a hotmelt adhesive. A gravure printing surface with ink-retaining cells is formed on the printing sleeve either before or, preferably, after the mounting of the sleeve on the core roll. For assemblage of the printing cylinder the hotmelt is applied in the molten state to at least part of at least either of the opposed surfaces of the printing sleeve and the core roll. Then the printing sleeve is placed over the core roll, preferably while both sleeve and roll are being heated. The printing cylinder can be readily disassemblaged by remelting the hotmelt layer. Also disclosed herein is an apparatus for the assemblage and disassemblage of the printing cylinder, including a roll holder for holding the core roll in an upstanding attitude while the core roll is being heated by a heating medium circulating therethrough.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: July 24, 1984
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Eiichi Tachibana, Koushou Murayama, Kenzo Isumi