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:
Nov. 06, 2012
Filed:
Oct. 29, 2008
Applicant:
Yasuyuki Nakamura, Yokohama, JP;
Inventor:
Yasuyuki Nakamura, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/40 (2006.01); H04N 1/60 (2006.01); H04N 1/21 (2006.01); G03F 3/08 (2006.01); G03G 15/00 (2006.01); G03G 15/10 (2006.01); G06K 9/00 (2006.01); G06F 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Density-correction-table lists showing an amount of density changes in respective density levels of images that exist after an image having a predetermined density has been printed on a predetermined number of sheets are maintained. The amount of density changes in the respective density levels for an image ratio that exists after the predetermined number of sheets have been printed on and for the predetermined number of sheets that have been printed on are obtained with reference to values in the maintained density-correction-table lists. A density correction characteristic is determined using the obtained amount of density changes.