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:
Sep. 24, 1991
Filed:
Jul. 24, 1990
Kenji Sato, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
An electrophotographic apparatus having a cam mechanism for shifting a transfer unit and a cleaning unit of the apparatus, enabling both of them to take a contacted position and a separated position with the surface of the photoreceptor drum to perform the functions of toner image transfer and residual toner cleaning in an ordered timing. The cam mechanism is provided with a cam which is driven to rotate intermittently around an axis of the photoreceptor drum, and a transfer cam follower and a cleaning cam follower are guided by the cam. The transfer cam follower shifts the transfer unit to take a transfer position in a transfer time interval and shifts the transfer unit to a separated position from the surface of the photoreceptor drum in a non-transfer time interval. The cleaning cam follower shifts the cleaning unit to a cleaning position in a cleaning time interval and shifts the cleaning unit to a separated position from the surface of the photoreceptor in a non-cleaning time interval.