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. 26, 2013
Filed:
Jun. 11, 2010
Akihiko Nakatani, Kawasaki, JP;
Fumihiro Goto, Kawasaki, JP;
Akitoshi Yamada, Yokohama, JP;
Mitsuhiro Ono, Tokyo, JP;
Okinori Tsuchiya, Yokohama, JP;
Fumitaka Goto, Tokyo, JP;
Takashi Fujita, Kawasaki, JP;
Rie Kajihara, Minoo, JP;
Ayumi Sano, Kawasaki, JP;
Tomokazu Ishikawa, Kawasaki, JP;
Akihiko Nakatani, Kawasaki, JP;
Fumihiro Goto, Kawasaki, JP;
Akitoshi Yamada, Yokohama, JP;
Mitsuhiro Ono, Tokyo, JP;
Okinori Tsuchiya, Yokohama, JP;
Fumitaka Goto, Tokyo, JP;
Takashi Fujita, Kawasaki, JP;
Rie Kajihara, Minoo, JP;
Ayumi Sano, Kawasaki, JP;
Tomokazu Ishikawa, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
When multi-pass printing is performed, the dot overlap rate (ratio of the number of dots that overlap and are to be printed in the same pixel area by the plurality of relative movements with respect to the total number of dots to be printed in a pixel area by the plurality of relative movements) in pixel areas having medium-density where density unevenness caused by density fluctuation easily stands out is made higher than the dot overlap rate in pixel areas having low-density and pixel areas having high-density. By doing so density unevenness caused by density fluctuation is suppressed. In addition, the dot overlap rate in pixel areas having low-density and pixel areas having high-density is low, so it is possible to reduce graininess in low-density areas and suppress a decrease in density in high-density areas.