Patents Examined by Steven C. Douglas
  • Method of filling an ink cartridge with ink and an apparatus thereof
    Patent number: 6539985
    Abstract: Ink is filled in an ink cartridge having a housing communicating with ambient air through an air communicating hole, a porous member impregnating with ink, an ink supply port, and a valve device including a valve body always urged by a spring and a valve seat abutting against the valve body, and ink is filled in the housing of the ink cartridge through the ink supply port.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: April 1, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Shinada, Yuichi Nakamura, Hisashi Koike, Yukiharu Suda