Patents by Inventor Takayoshi Ishino

Takayoshi Ishino 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).

  • Ink jet recording method and ink jet recording apparatus
    Patent number: 6086185
    Abstract: When the color printing is performed using a recording head arranged such that number of nozzles for discharging black ink is greater than the number of nozzles for discharging inks of other colors, the use frequency of some nozzles among all the nozzles for discharging the black ink is higher, so that image unevenness may arise when transferred to the black printing. The present invention relates to an ink jet recording method and an ink jet recording apparatus in which the image unevenness often seen in the black printing involving the use of more nozzles than other colors, and the blur of recorded image seen in the image having black images adjacent color images located are reduced.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: July 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiharu Inui, Jiro Moriyama, Hiroaki Kitazawa, Yasuhiro Numata, Takayoshi Ishino, Isao Ebisawa, Hisao Yaegashi