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:
Dec. 08, 2015
Filed:
Oct. 28, 2014
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
An image forming apparatus includes an image carrier, a holding roller which holds thereon developer attached on the image carrier, a transfer member which transfers a developer image on the image carrier to a transfer medium, a collection device which collects the developer on the holding roller via the image carrier, and a control device which executes a collection control of causing the developer held on the holding roller to move to the image carrier such that the collection device collects the developer via the image carrier. The control device applies to the holding roller a first discharge bias having a polarity same as the developer after the collection control starts until a first time elapses and thereafter applies to the holding roller a second discharge bias having a polarity same as the developer and having an absolute value larger than the first discharge bias.