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:
Mar. 27, 1990
Filed:
Feb. 28, 1989
Shozo Kaieda, Hachioji, JP;
Kentek Information Systems, Inc., Allendale, NJ (US);
Abstract
A belt transferring device for transferring on a record paper a toner image formed onto an image forming member is disclosed. The belt transferring device comprises a transferring belt with a dielectric layer formed on a conductive belt member; a driving device for running the transferring belt; a charging unit for charging the surface of the transfer belt to a polarity opposite to the charging polarity of toner; a brush roller having electroconductive fibers studed onto the outer periphery thereof and for cleaning the surface of the transfer belt; a bias supply source connected to the brush roller for biassing the brush roller to a grounded voltage or to a polarity opposite to the charging polarity of toner; a driving device for rotating and driving the brush roller; and a pair of rollers arranged between the charging and the transferring position and for carrying the transfer belt and a recording paper by clamping them, so that a backup roller positioned at a side facing or opposite to the dielectric layer of the transfer belt is connected to a grounded voltage point or a bias voltage point having the same polarity as the toner charging polarity.