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Methods for Performance Testing of Xerographic Machines Disclosure Number: IPCOM000046000D
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07

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Bielen, AF Perkins, RJ Schaeffer, HF [+details]


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.