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:
May. 14, 2013
Filed:
Jul. 24, 2012
Jun Yasutani, Kawasaki, JP;
Hiroshi Tajika, Yokohama, JP;
Hitoshi Nishikori, Inagi, JP;
Takeshi Yazawa, Yokohama, JP;
Satoshi Seki, Kawasaki, JP;
Fumiko Yano, Tokyo, JP;
Atsushi Takahashi, Kawasaki, JP;
Jun Yasutani, Kawasaki, JP;
Hiroshi Tajika, Yokohama, JP;
Hitoshi Nishikori, Inagi, JP;
Takeshi Yazawa, Yokohama, JP;
Satoshi Seki, Kawasaki, JP;
Fumiko Yano, Tokyo, JP;
Atsushi Takahashi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
While a conveying error of a roller depends on the eccentricity of the roller, the amount and the state of the eccentricity sometimes makes the roller have different conveying errors from one point in the longitudinal direction of the roller to another. There is provided a construction for obtaining a correction value that is suitable for the correction of the conveying error even in such a case as described above. To this end, plural test patterns are formed in the longitudinal direction of the roller. Then, a suitable correction value for correcting the conveying error that depends on the eccentricity of the roller is obtained on the basis of these test patterns.