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:
Aug. 05, 2003
Filed:
Aug. 29, 2001
Miyuki Fujita, Suginami-ku, JP;
Hiroshi Tajika, Yokohama, JP;
Atsushi Ushiroda, Kanagawa, JP;
Yuji Konno, Kawasaki, JP;
Norihiro Kawatoko, Kawasaki, JP;
Takayuki Ogasahara, Kawasaki, JP;
Tetsuya Edamura, Kawasaki, JP;
Tetsuhiro Maeda, Kawasaki, JP;
Atsuhiko Masuyama, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color ink-jet head, having plural arrays of nozzles side by side in a main scan direction corresponding to different color inks, is moved to scan reciprocally. In a multi-pass recording for divided recording on an area by scanning at plural times with the head, an ink firstly landed on recording of the area determines a prioritized color influential on the color tone. Moreover, a printing medium is largely covered by the recording of first two passes. A harmful influence on a whole image by the color irregularity can reduced by suppressing the color irregularity in the two passes, therefore, the data recording ratio of the first pass to the area is set smaller than that of the second pass and thereafter. Further, for such the control, a pseudo periodical masking data arranging record prohibiting pixels and record permitting pixels in a visually agreeable state is introduced.