Patents by Inventor Masaharu Matsuba

Masaharu Matsuba 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 assembly for an ink jet system printer of the charge amplitude controlling type
    Patent number: 4303928
    Abstract: A nozzle for issuing ink liquid, a vibrator for exciting the nozzle to emit ink droplets of a given frequency, and a charging electrode for charging the ink droplets in accordance with print information are arranged within a cylinder shaped housing. One end of the cylinder shaped housing is covered by a wall having an opening at the center thereof through which charged ink droplets are propelled. A fixing plate is attached to the other end of the cylinder shaped housing for tightly securing the nozzle, the vibrator and the charging electrode within the cylinder shaped housing.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: December 1, 1981
    Assignees: Nippon Telegraph & Telephone Public Corp., Sharp Kabushiki Kaisha
    Inventors: Kiyoshi Sugiyama, Masaharu Matsuba, Fusao Iwagami, Khoki Fukumoto
  • Ink liquid supply system for an ink jet system printer
    Patent number: 4152710
    Abstract: An electromagnetic cross valve is provided for selectively connecting a nozzle with an ink liquid supply conduit and an ink liquid drain conduit. When the nozzle is connected with the ink liquid drain conduit, ink liquid remains in the nozzle in such a manner that the ink liquid is filled to the tip end of the nozzle or the orifice of the nozzle.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: May 1, 1979
    Assignees: Nippon Telegraph & Telephone Public Corporation, Sharp Kabushiki Kaisha
    Inventors: Masaharu Matsuba, Kiyoshi Sugiyama, Hiromitsu Nakagawa, Hisashi Yoshimura