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:
Jul. 30, 2013
Filed:
Jan. 28, 2011
Kenjiro Nishiwaki, Aichi, JP;
Kenjiro Nishiwaki, Aichi, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A developer supply device is provided, which includes a bias controller that, during an image forming operation by an image forming apparatus, applies a first bias to a first transfer board and applies a second bias to between a developer holding body and the first transfer board, so as to make the developer holding body hold development agent thereon while transferring the development agent along a first developer transfer path of the first transfer board. At least one of before and after the image forming operation, the bias controller applies the first bias to the first transfer electrodes without applying the second bias to between the developer holding body and the first transfer board, so as to transfer the development agent along the first developer transfer path without making the developer holding body hold the development agent.