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:
Jun. 30, 2015
Filed:
Nov. 21, 2012
Canon Kabushiki Kaisha, Tokyo, JP;
Yuta Isobe, Kawasaki, JP;
Hideo Kihara, Yokohama, JP;
Takuya Kitamura, Yokohama, JP;
Yuji Kawaguchi, Tokyo, JP;
Kouki Yano, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an image bearing member, a developing device, a holding unit, and a detection device. The image bearing member supports an electrostatic latent image. The developing device includes a developer bearing member having a first electrode member and supporting a developer to develop the electrostatic latent image. The developing device includes a supply member having a second electrode member and supplying the developer to the developer bearing member at a nip portion. The holding unit holds and change the developing device to a first posture and to a second posture where the deposited developer falls off the first posture. The detection device detects a remaining developer amount in the developing device based on a capacitance Cbetween the first and second electrode members in the first posture and a capacitance Cbetween the first and second electrode members in the second posture.