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:
Apr. 02, 2013
Filed:
Mar. 24, 2010
Satoshi Murasaki, Suntou-gun, JP;
Toshifumi Kitamura, Numazu, JP;
Yasuhisa Matsumoto, Suntou-gun, JP;
Satoshi Murasaki, Suntou-gun, JP;
Toshifumi Kitamura, Numazu, JP;
Yasuhisa Matsumoto, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner pattern is detected by a color misregistration detection sensor to detect a duration of contact between a development roller and a photosensitive drum. A contact/separation motor for driving the development roller is accelerated or decelerated based on the detected duration of contact between the development roller and the photosensitive drum. This control enables shortening the duration of contact between the development roller and the photosensitive drum, thus reducing the shortening of their lifetime.