Method for controlling the toner concentration in an electrostat

Photocopying – Miscellaneous

Patent

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Details

355 3DD, 355 14D, G03G 1506, G03G 2100

Patent

active

044190107

ABSTRACT:
The toner concentration of a xerographic reproduction device is maintained by use of a patch sensor, wherein the photoconductor's test patch is toned while the photoconductor voltage is substantially zero, and while the developing field is provided by a development electrode voltage source whose polarity is opposite that which is used during reproduction.

REFERENCES:
patent: 4178095 (1979-12-01), Champion et al.
patent: 4286866 (1981-09-01), Stelben et al.
patent: 4312589 (1982-01-01), Brannan et al.
patent: 4372672 (1983-02-01), Pries

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