ERASE PATCH VALVE
Original Publication Date: 1980-Feb-29
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
In an electrophotographic printing machine, it is frequently desirable to form a sample voltage patch in the inter-image zone. A volt meter measures the potential of the sample patch and controls the charge of a corona generating device. In operation, it is desirable to erase this patch so as to preclude development thereof. In this way, extraneous development is prevented so as to minimize waste of toner material.