Patents by Inventor Takeo Eguehi

Takeo Eguehi 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).

  • Printer head chip and printer head
    Patent number: 7063406
    Abstract: A printer head chip includes a plurality of ink compressing chambers which include heat-generating resistors and which are disposed side by side on a substrate. The printer head chip is used to discharge ink inside the plurality of ink compressing chambers from a nozzle by driving the heat-generating resistors. The printer head chip further includes an ink flow path groove, which is formed in the substrate and which is connected to each of the ink compressing chambers, for supplying ink to each of the ink compressing chambers. The invention makes it possible to supply ink to the printer head chip without increasing the size of a printer head, and to simplify the structure of the printer head.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: June 20, 2006
    Assignee: Sony Corporation
    Inventors: Takeo Eguehi, Minoru Kohno, Shinichi Horii, Takumi Namekawa
  • Printer head chip and printer head
    Publication number: 20050088489
    Abstract: A printer head chip includes a plurality of ink compressing chambers which include heat-generating resistors and which are disposed side by side on a substrate. The printer head chip is used to discharge ink inside the plurality of ink compressing chambers from a nozzle by driving the heat-generating resistors. The printer head chip further includes an ink flow path groove, which is formed in the substrate and which is connected to each of the ink compressing chambers, for supplying ink to each of the ink compressing chambers. The invention makes it possible to supply ink to the printer head chip without increasing the size of a printer head, and to simplify the structure of the printer head.
    Type: Application
    Filed: November 19, 2004
    Publication date: April 28, 2005
    Inventors: Takeo Eguehi, Minoru Kohno, Shinichi Horii, Takumi Namekawa