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. 21, 2011
Filed:
Mar. 25, 2008
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
Performed is conveying-error correction in accordance with the kind and the number of rollers that are actually involved in the conveying of a printing medium. Each of the rollers that are potentially involved in the conveying of the printing medium has a unique amount of eccentricity, and may affect the quality of image to be printed in a peculiar manner. To address this problem, a surface of the printing medium is divided into areas according to the number and the combination of the rollers that are actually involved in the conveying. A pattern each is printed for each of the areas thus formed while the pattern enables the detection of the conveying error. A correction value to correct the conveying error is calculated using each of the patterns. The correction values thus obtained are reflected in the conveying of the printing medium.