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:
Sep. 02, 2003
Filed:
May. 30, 2001
Applicant:
Inventors:
Hirokazu Kodama, Shizuoka, JP;
Tatsuhito Kataoka, Shizuoka, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/732 ; B41J 2/385 ; G03G 1/516 ; G01B 1/100 ; H04N 1/23 ;
U.S. Cl.
CPC ...
G03B 2/732 ; B41J 2/385 ; G03G 1/516 ; G01B 1/100 ; H04N 1/23 ;
Abstract
An image forming apparatus for sequentially superimposes images formed by a plurality of image forming stations for forming images of different colors, respectively, on a transferring material born and transported by a transferring material transporting member, which forms a misregister detection mark on the transferring material transporting member, illuminates to read the mark, calculates a misregister amount of the read misregister detection mark, and corrects the misregister of an image based on calculated results, wherein the apparatus adjusts an illuminating light amount according to a color of a misregister detection mark.