Image forming apparatus with cleaning capacity changeable in acc

Details Image forming apparatus with cleaning capacity changeable in acc Image forming apparatus with cleaning capacity changeable in acc

1995-09-12

1997-08-12

Pendegrass, Joan H.

Electrophotography

Control of electrophotography process

Control of cleaning

355297, G03G 2110

Patent

active

056571143

ABSTRACT:
A copying machine comprises a cleaning device for cleaning toner remaining on the surface of a photoconductive drum, and a sensor for detecting image density of an image to be formed on the drum. The cleaning device includes a cleaning blade arranged to contact with drum, and an auxiliary cleaning mechanism arranged upstream the cleaning blade with respect to the rotating direction of the drum. The auxiliary cleaning mechanism has variable cleaning capacity. The cleaning capacity of the auxiliary cleaning mechanism is varied by a control unit in accordance with the image density detected by the sensor.

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