Photocopying – Contact printing – Light boxes
Patent
1994-02-04
1995-01-17
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
355203, 355204, 355219, G03G 2100, G03G 1502
Patent
active
053830059
ABSTRACT:
An image processing apparatus having a corona device for charging a photoreceptor to voltage levels, a developer for applying toner to the photoreceptor, and a sensor for providing a signal in relation to photoreceptor voltage for adjusting the photoreceptor voltage levels by providing signals from the sensor in response to periodic electrostatic set ups which includes developing a series of predetermined test patches on the photoreceptor, relating the signals to characteristics of the photoreceptor, adjusting the corona device for the characteristics in response to the signals, and measuring cycle down and short term photoreceptor rest recovery changes in photoreceptor voltage for use in adjusting the corona device.
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Magde, Jr. John M.
Panepinto Carol J.
Savage Edward C.
Thompson David M.
Chapuran Ronald
Smith Matthew S.
Xerox Corporation
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