CONTROL FOR A CORONA DISCHARGE DEVICE
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
Control apparatus for a corona discharge device to be utilized in a xerographic reproduction machine. The control is characterized hy utilizing the shield or coronode voltage to derive signals which can be used for maintaining the photoconductive surface of the machine at a predeterimined 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.