Transfer apparatus and image forming apparatus

Details Transfer apparatus and image forming apparatus Transfer apparatus and image forming apparatus

2006-03-01

2009-02-03

Royer, William J (Department: 2852)

Electrophotography

Image formation

Transfer

Reexamination Certificate

active

07486919

ABSTRACT:
A transfer unit transfers an image formed on an image bearing body (a photoconductive drum or an intermediate transfer belt) onto a medium by an electrostatic force. The transfer unit includes a transfer belt and a transfer roller. The transfer roller extends parallel to the image bearing body and transfers a toner image onto a medium. The transfer roller is pressed toward the image bearing body under a pressing force in a range of 28-112 gf/cm. The transfer belt is held between the transfer roller and the image bearing body in a sandwiched relation to define a transfer point between the transfer belt and the image bearing body. The transfer belt transports the medium through the transfer point.

REFERENCES:
patent: 5978637 (1999-11-01), Sakai et al.
patent: 6819899 (2004-11-01), Miyakawa et al.
patent: 6875550 (2005-04-01), Miyakawa et al.
patent: 10-133496 (1998-05-01), None

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