Methods for Performance Testing of Xerographic Machines
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07
Light patterns in either direction through optics of a xerographic machine are employed to measure and/or sense performance operation of the copier for testing purposes. A detector arrangement at the normal output of the optics determines proper movement of original documents relative to a scanning window, while supplementary light sources at the output of the optics reflect light patterns back to the scanning window for sensing or measuring.