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. 24, 2009
Filed:
Aug. 30, 2006
Applicant:
Tatsuya Goto, Abiko, JP;
Inventor:
Tatsuya Goto, Abiko, JP;
Assignee:
Canon Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 15/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pattern image for registration correction is formed in a reference color and an arbitrary color to be corrected. The pattern image for registration correction is formed a number or times nor a number of times n. If the total number of image forming sections is S; the length of sheets is L; the sheet-to-sheet distance is d; and the belt conveying distance corresponding to one revolution of a drive roller is A, nsatisfies ((L+d)×(S−1)/A)×n=N(where nis an integer and Nis an approximate integer), and nsatisfies ((L+d)/A)×n=N(where nis an integer, and Nis an approximate integer).