Cleaning method and apparatus for an electrographic system

Details Cleaning method and apparatus for an electrographic system Cleaning method and apparatus for an electrographic system

1980-12-22

1983-03-29

Lawrence, Evan K.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

118652, 118688, 118697, 118699, 355 15, 430125, G03G 1508, G03G 2100

Patent

active

043784216

ABSTRACT:
A method and apparatus for cleaning residual toner from the surface of an imaging member in an electrographic imaging system which uses carrier means to transport toner by triboelectric forces to develop an electrostatic image on the imaging member. The pre-clean corona current is adjusted periodically during the lifetime of the carrier as necessary substantially to neutralize the charge on residual toner so that it may readily be removed by a rotating cleaning brush having substantially no charge thereon. Adjustment is in response to a periodically sensed aging characteristic, the charge density of the toner, such as at successive preselected operating time intervals representing increments of carrier useful lifetime. In this manner, cleaning efficiency is maintained.

REFERENCES:
patent: 3918968 (1975-11-01), Kukla et al.
patent: 3944354 (1976-03-01), Benwood et al.
patent: 4167325 (1979-09-01), Plumadore
patent: 4201465 (1980-05-01), Oyama et al.

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