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:
Mar. 06, 2012
Filed:
May. 06, 2011
Tomokazu Yanai, Yokohama, JP;
Yumi Watanabe, Yokohama, JP;
Atsushi Ushiroda, Kawasaki, JP;
Hisashi Ishikawa, Urayasu, JP;
Tomokazu Yanai, Yokohama, JP;
Yumi Watanabe, Yokohama, JP;
Atsushi Ushiroda, Kawasaki, JP;
Hisashi Ishikawa, Urayasu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In order to form a high-quality image, upon execution of multi-pass printing using a printing head with a plurality of nozzles, an image processing apparatus calculates, using a scan duty setting unit, scan duty data for respective nozzles for each scan of the printing head in accordance with input image data. A halftone processor generates a dot pattern to be formed by applying N-ary processing based on predetermined constraining condition information to the calculated scan duty data. A constraining, condition information calculation unit generates constraining condition information to be referred to by the halftone processor at the time of the next scan. The constraining condition information is set so that the phase of a next dot pattern to be generated has an opposite phase relationship in a low frequency region with respect, to the already printed dot pattern.