Patents Examined by Shi-wen Hsieh
  • Ink jet printing apparatus and ink cartridge
    Patent number: 6361138
    Abstract: An ink cartridge (1, 2) is provided with a rewritable storage system (32, 42). The storage system stores therein data concerning the operation history of a cleaning system in a rewritable mode. The cleaning operation that has been performed during the actual use of the printing apparatus can be recognized precisely based on the data concerning the operation history.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: March 26, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Takeo Seino, Takahiro Naka, Satoshi Shinada