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:
Aug. 03, 1993
Filed:
Apr. 28, 1992
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
A cleaning unit includes a plurality of rotatable fur brushes which are arranged so as to adjoin in a downstream direction of a transferring process on a surface of a photoreceptor drum and whose tips are in contact with the surface for removing residual toner on the surface, recovering rollers arranged so as to be in contact with the tip of each of the fur brushes for removing toner adhering to the fur brushes, and a charger for charging the fur brushes and the recovering rollers, wherein the fur brush arranged at the downmost stream side rotates at a lower speed compared to another fur brush arranged in the upstream side thereof, wherein a discharger is further provided for decreasing the charge of the residual toner, and wherein the charger charges the downmost stream side fur brush reversely to the uppermost stream side fur brush.