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:
May. 07, 2019
Filed:
Jan. 23, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Daisuke Makiguchi, Izunokuni, JP;
Tatsuro Harada, Mishima, JP;
Hiroki Shimizu, Suntou-gun, JP;
Osamu Anan, Susono, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developing device, detachably mountable to an image forming apparatus main body, includes a developing frame containing a developer, a developing roller performing developing using the developer, and a plurality of electric contact points disposed at one end in an axial direction of the developing roller, on a face that intersects the axial direction. The developing device is pivotably centered on a pivot axis parallel to the axial direction of the developing roller, and electrically conducts with the image forming apparatus main body via the plurality of electric contact points when mounted to the image forming apparatus main body. In a plane perpendicular to the axial direction of the developing roller, a position of the pivot axis is within a polygon having a greatest area formed of outer shapes of the plurality of electric contact points and straight lines connecting the outer shapes of the multiple electric contact points.