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. 02, 2010
Filed:
Sep. 21, 2007
Takeo Yamamoto, Abiko, JP;
Shigeo Hata, Toride, JP;
Naohisa Nagata, Moriya, JP;
Mitsuhiro Ota, Toride, JP;
Daisaku Kamiya, Abiko, JP;
Takeo Yamamoto, Abiko, JP;
Shigeo Hata, Toride, JP;
Naohisa Nagata, Moriya, JP;
Mitsuhiro Ota, Toride, JP;
Daisaku Kamiya, Abiko, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
An image forming apparatus that can realize an image having adequate image quality, density and color, without provoking excessive consumption of a developer and reduction in productivity. Image formation is performed by forming a latent image on an image carrier based on image information, then developing and transferring the latent image. An image for adjustment on a portion is formed other than a portion on which the latent image is formed on the image carrier. The density of the image for adjustment is detected. Image density is adjusted based on the density of the detected image for adjustment. Image formation control is executed whereby density is adjusted when an image is formed. A printing rate that indicates the percentage of the image formation to a sheet used for image formation is calculated. When the printing rate is determined to be within a set range, the image formation control is executed at a set frequency. On the other hand, when the printing rate is determined to be outside the set range, the set frequency is changed and the image formation control is executed.