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:
Nov. 18, 2014
Filed:
May. 10, 2012
Hideo Kihara, Yokohama, JP;
Takuya Kitamura, Yokohama, JP;
Yuji Kawaguchi, Tokyo, JP;
Kouki Yano, Kawasaki, JP;
Yuta Isobe, Kawasaki, JP;
Hideo Kihara, Yokohama, JP;
Takuya Kitamura, Yokohama, JP;
Yuji Kawaguchi, Tokyo, JP;
Kouki Yano, Kawasaki, JP;
Yuta Isobe, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color image forming apparatus includes an image bearing member for carrying an electrostatic latent image, a plurality of developing devices for developing the electrostatic latent image, a supporting member for moving the developing devices sequentially to a developing position opposing the image bearing member, and a detecting device for detecting developer remainder in the developing device. In addition, a determining portion determines the developer remainder. In the developing device in which the detecting operation is effected after the developing operation, the determining portion determines the developer remainder from the information relating to the detected developer remainder. In the developing device of the developing devices for which the detecting operation is effected before the developing operation, the determining portion determines the developer remainder from the information relating to the detected developer remainder and a deduced consumption amount.