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A COROTRON DEVICE WHOSE CURRENT OUTPUT CAN BE VARIED IN A PRESCRIBED WAY WITH TIME

IP.com Disclosure Number: IPCOM000024069D
Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal

Abstract

In the process known as detacking, it is useful to be able to deposit relatively more charge on the lead edge of a copy than on the bulk of the copy. This facilitates detacking at the same time as minimizing toner image disturbances. To do this it is necessary to have a signal derived from the paper position. If the current switching is performed with relays, there are intrinsic difficulties in obtaining current variations of very short duration and in shaping the form of the current variation with time associated with the essentially mechanical operation of relays. If the switching is accomplIshed purely electronically, these difficulties are easily overcome.