Excess developing liquid removing device for electrophotography

Details Excess developing liquid removing device for electrophotography Excess developing liquid removing device for electrophotography

1975-06-25

1977-05-17

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118DIG23, 427 15, G03G 1510

Patent

active

040238997

ABSTRACT:
A roller is disposed parallel and adjacent to a photoconductive drum with a small gap inbetween. The roller is made of an electrically conductive material and covered with an insulating coating of hard anodized aluminum. The roller is fixed to a shaft which is driven to rotate the roller in the same direction as the drum to remove excess developing liquid from the drum through viscous friction. Electrically conductive bearings are mounted on the ends of the shaft which have an outer diameter greater than the diameter of the roller. The bearings rotatably contact the surface of the drum to maintain the gap. Either insulating plastic bushings or layers of alumite are disposed between the ends of the shaft and the bearings to insulate the shaft from the bearings and thereby from the drum.

REFERENCES:
patent: 3752119 (1973-08-01), Matkan
patent: 3815989 (1974-06-01), Davis et al.
patent: 3849171 (1974-11-01), Takahashi et al.
patent: 3907423 (1975-09-01), Hayashi et al.

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