Image forming apparatus employing an intermediary transfer membe

Details Image forming apparatus employing an intermediary transfer membe Image forming apparatus employing an intermediary transfer membe

1997-04-25

1998-09-15

Pendegrass, Joan H.

Electrophotography

Image formation

Transfer

399308, G03G 1501, G03G 1516

Patent

active

058093877

ABSTRACT:
An image forming apparatus for forming a toner image on a transfer material using an intermediary transfer member, includes a first image bearing member; toner image forming means for forming a toner image on said first image bearing member; an intermediary transfer member, as a second image bearing member, movable along an endless path in contact with said first image bearing member; first transfer means for transferring the toner image from said first image bearing member onto the intermediary transfer member at a first transfer position of said intermediary transfer member; second transfer means for transferring the toner image from said intermediary transfer member onto the transfer material at a second transfer position of said intermediary transfer member; wherein said intermediary transfer member comprises as a base material flexible rubber belt having a thickness of 0.5 to 3 mm, and an actual resistance R.sub.B1 (Ohm) thereof and an electrostatic capacity C.sub.B1 (F) satisfy:

REFERENCES:
patent: 4095886 (1978-06-01), Koeleman et al.
patent: 4931839 (1990-06-01), Tompkins et al.
patent: 5600423 (1997-02-01), Miyashiro et al.

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