Control for a corona discharge device

Details Control for a corona discharge device Control for a corona discharge device

1982-08-30

1984-06-12

Goldberg, E. A.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Of paper or paper handling machine

361229, 361235, 355 3CH, G03G 1500

Patent

active

044545592

ABSTRACT:
Control apparatus for a corona discharge device to be utilized in a xerographic reproduction machine. The control is characterized by utilizing the shield or coronode voltage to derive signals which can be used for maintaining the photoconductive surface of the machine at a predetermined voltage level. The voltage level on the shield or coronode is measured twice, once with the surface in its conducting state and with the surface in its non-conducting state. The difference between the two voltages is compared to a reference voltage to generate an output signal for controlling the voltage applied to either the shield or coronode depending upon which is being used.

REFERENCES:
patent: 3586908 (1971-06-01), Vosteen
patent: 3667036 (1972-05-01), Seachman
patent: 3678350 (1972-07-01), Matsumoto et al.
patent: 3835380 (1974-09-01), Webb
patent: 3887845 (1975-06-01), Michatek
patent: 3950680 (1976-04-01), Michaels et al.
patent: 4265990 (1981-05-01), Stolka et al.
patent: 4286862 (1981-09-01), Akita et al.
patent: 4318610 (1982-03-01), Grace

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