Photocopying – Contact printing – Light boxes
Patent
1992-03-27
1993-07-20
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355296, 355301, G03G 2100
Patent
active
052298175
ABSTRACT:
In accordance with the present invention, there is provided a cleaning apparatus in a printing apparatus of the type having a charge retentive surface upon which residual material is disposed. In one aspect of the disclosed embodiment, the cleaning apparatus includes a rotatable member adapted to contact the charge retentive surface for removing the residual material therefrom, and a motor for rotating the rotatable member. The cleaning apparatus further includes a motor controller for transmitting an electrical signal to the motor, and a machine controller for monitoring the electrical signal to measure the extent of wear to which the rotatable member has been subjected. In another aspect of the disclosed embodiment, the cleaning apparatus includes a conductive cleaning member, disposed proximate the charge retentive surface, for generating an electrostatic field to remove the residual material from the charge retentive surface. Additionally, there is provided a power supply for transmitting an electrical signal to the conductive cleaning member, and an electrical circuit for monitoring the electrical signal to measure the extent of wear to which the conductive cleaning member has been subjected.
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Lange Clark V.
Siegel Robert P.
Beatty Robert
Cohen Gary B.
Grimley A. T.
Xerox Corporation
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