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:
Dec. 13, 2011
Filed:
Feb. 13, 2009
Applicants:
Hideki Kubo, Kawasaki, JP;
Shugo Higuchi, Inagi, JP;
Mizue Shimbaru, Yokohama, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image forming apparatus is provided that uses a table generated in advance to correct a gradation characteristic of an image to be formed when carrying out image forming using an image carrier. A patch is formed in an area where the image is not formed on the image carrier. A density of the patch formed on the image carrier is measured. The table is modified based on the density of the patch that has been measured. The patch is formed concurrently with image forming of the image on the image carrier.