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. 01, 2007
Katsuhiro Kojima, Mishima, JP;
Kenji Matsuda, Numazu, JP;
Hideki Matsumoto, Utsunomiya, JP;
Masaki Ojima, Mishima, JP;
Minoru Matsuguma, Shizuoka-ken, JP;
Katsuhiro Kojima, Mishima, JP;
Kenji Matsuda, Numazu, JP;
Hideki Matsumoto, Utsunomiya, JP;
Masaki Ojima, Mishima, JP;
Minoru Matsuguma, Shizuoka-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus has: a photosensitive drum onto which images are formed; and a primary transfer roller which sequentially forms the color images onto the photosensitive drum by using a plurality of developing devices having different color developers and transfers the color images formed on the drum onto a transfer member or a recording medium. Order of forming the images onto an image bearing member on a photosensitive member is switched based on a use amount of each of the plurality of developing devices.