Image forming apparatus and method with cleaning features

Details Image forming apparatus and method with cleaning features Image forming apparatus and method with cleaning features

1998-02-27

1999-10-12

Smith, Matthew S.

Electrophotography

Internal machine environment

Particle or contaminant control

399297, 399308, G03G 1516

Patent

active

059665645

ABSTRACT:
An image forming apparatus and method are provided that effectively remove inversely charged toner and normally charged toner attached to a transfer medium by employing two cleaning modes of operation. In a first cleaning operational mode, in which a transfer belt is brought into contact with a non-charged photosensitive body and a transfer bias is applied thereto from a bias roller, the inversely charged toner attached to the transfer belt is fully transferred onto the photosensitive body. Furthermore, in a second cleaning mode of operation, the transfer belt is brought into contact with the non-charged photosensitive body and the transfer bias is not applied hereto, as a consequence the normally charged toner attached to the transfer belt is fully transferred onto the photosensitive body.

REFERENCES:
patent: 5079597 (1992-01-01), Mauer et al.
patent: 5559590 (1996-09-01), Arai et al.
patent: 5614998 (1997-03-01), Sanpe
patent: 5732310 (1998-03-01), Hiroshima et al.
patent: 5809373 (1998-09-01), Yoda et al.
patent: 5812919 (1998-09-01), Takano et al.

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