Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1979-12-13
1982-04-27
Rubinson, Gene Z.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 14R, 355 3CH, G03G 1502
Patent
active
043267963
ABSTRACT:
Factors affecting copy quality are continuously adjusted during copying in accordance with the actual charge on the photoconductor relative to a fixed reference potential. The photoconductor, carried on a moving, partially exposed, constant potential conductive support, is sensed by a probe. The probe supplies a signal as a function of the potential on portions of the photoconductor and the conductive support passing by the probe. A circuit converts the probe signals into digitized values representing the current photoconductor potential relative to the support. The digitized values adjust copier parameters to compensate for deviations of photoconductor potential from predetermined desired values.
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Ser. No. 141,860, Filed 04/21/80, "Test Cycle Quality Control System for an Electrophotographic Machine," C. C. Wilson, Assigned to IBM Corporation, a continuation of Ser. No. 894,956, Filed 04/10/78, same Title, Inventor and Assignee, Abandoned 04/21/80.
Champion James R.
Ernst Larry M.
Ford Leland W.
Velarde Ronald G.
Hauptman Gunter A.
International Business Machines - Corporation
Moose Richard M.
Rubinson Gene Z.
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