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. 16, 1988
Filed:
May. 21, 1987
Masahiro Watashi, Nara, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
A method for cleaning a photoreceptor of an image forming apparatus includes actuating a cleaning means of a cleaning system and rotating the photoreceptor before a usual image forming operation, after a predetermined time, charging a particular area of the photosensitive drum, transferring residual toner adhering to a sealing member of a developing unit to the charged area, carrying the transferred residual toner with rotation of the photoreceptor to the cleaning means of the cleaning device, and removing the residual toner by the cleaning means. Accordingly, the present invention eliminates the possibility of mixing of the color of a previously used toner into a toner image after replacement of a developing unit by another unit containing a different color of toner.