The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Aug. 16, 2005
Minoru Teshigawara, Yokohama, JP;
Naoji Otsuka, Yokohama, JP;
Kiichiro Takahashi, Kawasaki, JP;
Osamu Iwasaki, Tokyo, JP;
Tetsuya Edamura, Kawasaki, JP;
Yoshinori Nakagawa, Kawasaki, JP;
Satoshi Seki, Kawasaki, JP;
Naomi Oshio, Kawasaki, JP;
Minoru Teshigawara, Yokohama, JP;
Naoji Otsuka, Yokohama, JP;
Kiichiro Takahashi, Kawasaki, JP;
Osamu Iwasaki, Tokyo, JP;
Tetsuya Edamura, Kawasaki, JP;
Yoshinori Nakagawa, Kawasaki, JP;
Satoshi Seki, Kawasaki, JP;
Naomi Oshio, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A present invention reduces the generation of periodic uneven print density in the image in a main scanning direction. The present invention focuses attention on a fact that, when a printing head including a plurality of nozzle arrays for ejecting different inks is used to print an image and when the same pixel is printed by a combination of nozzle arrays in which an interval in the main scanning direction is relatively short, the displacement of ink impact positions is smaller when compared to a case where the same pixel is printed by a combination of nozzle arrays in which an interval in the main scanning direction is relatively long. Thus, a dot arrangement pattern allocated to the pixel data is selected so that the same pixel is printed by a combination of nozzle arrays in which an interval in the main scanning direction is relatively short.