Apparatus and method for cleaning a transfer device of an image

Details Apparatus and method for cleaning a transfer device of an image Apparatus and method for cleaning a transfer device of an image

1995-10-02

2000-05-16

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

G03G 1516

Patent

active

060644702

ABSTRACT:
A contact type image transferring device and method incorporated in an image forming apparatus for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum at a first force and forms nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, the transfer roller is moved such that the force of the roller against the drum is a second force which is different from the first force. A cleaning bias voltage is applied to the roller and toner on the roller is transferred to the drum.

REFERENCES:
patent: 4998143 (1991-03-01), Kumasaka et al.
patent: 5532795 (1996-07-01), Tatsumi et al.

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