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:
Jun. 26, 2001
Filed:
Jun. 11, 1999
Miyuki Matsubara, Tokyo, JP;
Hiromitsu Hirabayashi, Yokohama, JP;
Shigeyasu Nagoshi, Kawasaki, JP;
Noribumi Koitabashi, Yokohama, JP;
Hitoshi Sugimoto, Kawasaki, JP;
Fumihiro Gotoh, Yokohama, JP;
Masaya Uetuki, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A plurality of recording heads for ejecting inks of different colors are reciprocally moved relative to a recording medium, and printing operations are performed by executing main scans in forward and backward scans of the recording heads. In this case, an area printable in a single main scan is recorded by performing a plurality of main scans using a plurality of thinning patterns in which an m×n pixel group is defined as a unit pixel group, and the pixel groups are arranged at non-neighboring positions, and which have a complementary arrangement relationship therebetween. A high-quality color image free from time difference nonuniformity, and density nonuniformity caused by, e.g., variations of recording elements is obtained at high speed.