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. 24, 2015
Filed:
Oct. 29, 2014
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Mayu Wakamatsu, Tsushima, JP;
Masatoshi Shiraki, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
An image forming apparatus includes an image carrier which carries thereon a developer image, a holding roller which holds thereon developer attached on the image carrier, a collection device which collects the developer on the holding roller via at least the image carrier, and a control device which executes a holding control of applying to the holding roller a holding bias having a polarity opposite to the developer such that the holding roller holds developer and a collection control of applying to the holding roller a discharge bias having a polarity same as the developer such that the developer held on the holding roller is moved to the image carrier and the collection device collects the developer via the image carrier. The control device starts the collection control at a timing after a predetermined point of time according to an estimated charge amount of the developer.