Method of preventing back side of paper from contamination in el

Details Method of preventing back side of paper from contamination in el Method of preventing back side of paper from contamination in el

1997-06-12

1998-10-27

Grimley, Arthur T.

Electrophotography

Internal machine environment

Particle or contaminant control

399 66, 399296, G03G 1516, G03G 2100

Patent

active

058289275

ABSTRACT:
A back side of a paper is protected from contamination during an operation of the electrophotographic printer. A light scanning unit is warmed up as the main motor operates. This should minimize the potential difference on the surface of the photosensitive drum. A zero or a less than zero voltage is applied to its transfer roller to prevent the toner from adhering to the transfer roller before a paper reaches the transfer roller. This protects the back side of the paper from contamination due to the toner.

REFERENCES:
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patent: 5078463 (1992-01-01), Kawawada
patent: 5124744 (1992-06-01), Ogura et al.
patent: 5132738 (1992-07-01), Nakamura et al.
patent: 5253022 (1993-10-01), Takeuchi et al.
patent: 5337127 (1994-08-01), Imaue
patent: 5621509 (1997-04-01), Karashima et al.
patent: 5692232 (1997-11-01), Okano et al.

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