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:
Feb. 01, 2011
Filed:
Aug. 28, 2008
Seiji Yamaguchi, Mishima, JP;
Seiji Yamaguchi, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a developing device for developing an electrostatic image with a developer; a developer amount detecting device for detecting an amount of a developer in the developing device; a developer consumption amount calculating device for calculating a consumption amount of the developer on the basis of image information of the electrostatic image; a developer supplying device for supplying the developer to the developing device; a control device for controlling a developer supply operation to the developing device by the developer supplying device, wherein the control device controls the developer supply device to supply a predetermined amount of the developer every time an integrated value of the consumption amount of the developer exceeds a supply threshold, and corrects the supply threshold on the basis of information relating to an amount of the developer in the developing device detected by the developer amount detecting device.