Photocopying – Contact printing – Light boxes
Patent
1991-09-05
1992-08-11
Moses, R. L.
Photocopying
Contact printing
Light boxes
355328, 355219, G03G 2100, G03G 1502
Patent
active
051383780
ABSTRACT:
Recalculation of electrostatic target values in a tri-level imaging apparatus are utilized to extend the useful life of the photoreceptor (P/R). The increase in residual voltage due to P/R aging which would normally necessitate P/R disposal is obviated by resetting the target voltage for the full ROS exposure when it reaches its exposure limit with current P/R conditions. All contrast voltage targets are then recalculated based on this new target.
The new targets are calculated based on current capability of the overall system and the latitude is based on voltage instead of exposure.
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Berman Robin E.
Hurwitch Carl B.
MacDonald Daniel W.
Nagley Clement J.
Scheuer Mark A.
Moses R. L.
Xerox Corporation
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