Patents by Inventor Kazushige Haketa

Kazushige Haketa 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).

  • Nozzle plate for ink jet printer and method of manufacturing said nozzle plate
    Patent number: 6126269
    Abstract: A nozzle plate free from stray fly and defective jetting is achieved by a method which has a first step of putting a photosensitive resin film 5 in pressure contact with a back surface of a nozzle plate 1. A part of the photosensitive resin film 5 is caused to step into a nozzle 4 by controlling the viscosity thereof by changing temperature. Then, the thus processed photosensitive resin film 5 is hardened by injecting ultraviolet rays thereto. Next, a front surface 2 of the nozzle plate 1 is subjected to a eutectoid plating 6 process. By regulating a step coverage d of a part of the eutectoid plating 6 into the nozzle 4 by the hardened photosensitive resin film 5, a-nozzle plate having consistent nozzles, each being free from stray fly and defective jetting can be formed.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: October 3, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Kiyohiko Takemoto, Shuichi Yamaguchi, Akio Yamamori, Kazushige Haketa, Yukiyoshi Icyu
  • Nozzle plate for ink jet printer and method of manufacturing said nozzle plate
    Patent number: 5759421
    Abstract: A nozzle plate free from stray fly and defective jetting is achieved by a method which has a first step of putting a photosensitive resin film 5 in pressure contact with a back surface of a nozzle plate 1. A part of the photosensitive resin film 5 is caused to step into a nozzle 4 by controlling the viscosity thereof by changing temperature. Then, the thus processed photosensitive resin film 5 is hardened by injecting ultraviolet rays thereto. Next, a front surface 2 of the nozzle plate 1 is subjected to a eutectoid plating 6 process. By regulating a step coverage d of a part of the eutectoid plating 6 into the nozzle 4 by the hardened photosensitive resin film 5, a nozzle plate having a consistent nozzles, each being free from stray fly and defective jetting can be formed.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: June 2, 1998
    Assignee: Seiko Epson Corporation
    Inventors: Kiyohiko Takemoto, Shuichi Yamaguchi, Akio Yamamori, Kazushige Haketa, Yukiyoshi Icyu