Image forming apparatus for moving a charging roller towards and

Details Image forming apparatus for moving a charging roller towards and Image forming apparatus for moving a charging roller towards and

1996-01-18

1997-12-09

Grimley, Arthur T.

Electrophotography

Internal machine environment

Particle or contaminant control

361225, 399 99, G03G 1502

Patent

active

056970200

ABSTRACT:
An image forming apparatus having a device for moving a charging roller towards and away from a photoreceptor and a cleaning member for the charging roller. The charging roller moving device moves the charging roller to positions including a first position where the charging roller is in contact with the photoreceptor and is separated from the cleaning member for a charging operation, a second position where the charging roller is in contact with the cleaning member for cleaning the surface of the charging roller and a third position where the charging roller is separated from the photoreceptor and the cleaning member. Even if the apparatus is left unoperated for a long time, the photoreceptor is prevented from being contaminated by the charging roller by placing the charging roller in the third position.

REFERENCES:
patent: 4339195 (1982-07-01), Gabelman
patent: 5552865 (1996-09-01), Owasa et al.

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