公开(公告)号：CA1162587A

公开(公告)日：1984-02-21

申请号：CA363915

申请日：1980-11-04

Applicant: IBM

Inventor： CHAMPION JAMES R ,  ERNST LARRY M ,  FORD LELAND W ,  VELARDE RONALD G

IPC: G01R29/12 ,  G01R19/00 ,  G03G15/00 ,  G03G15/02 ,  G03G15/06 ,  G03G21/00

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. B0977024

公开(公告)号：CA2007788A1

公开(公告)日：1990-09-17

申请号：CA2007788

申请日：1990-01-15

Applicant: IBM

Inventor： BELL ROGER W ,  EHN DEAN S ,  FOX SIDNEY J ,  GIBSON DAVID K ,  RIES MICHAEL D ,  ROSATI ALFONSO A ,  VELARDE RONALD G

IPC: G03G15/16 ,  G03G15/06 ,  G03G15/044

Abstract: B0989001X ELECTROPHOTOGRAPHIC MACHINE WITH EFFICIENT TRANSFER An electrophotographic machine with a transfer corona generator for producing ionic flow to the backside of print paper to electrostatically attach the paper to the photoreceptive image bearing surface. The machine includes a flexible support member which is movably mounted to mechanically press the print paper against the photoreceptive surface within the transfer zone, preferably at or near the region of peak transfer charge distribution. In that manner, charge from the transfer corona attaches the print paper to the photoreceptive surface at the line of release from the mechanical pressure applied by the flexible support member and thereby eliminates voids in the transfer of toner to print paper caused by air gaps between the paper and the photoreceptive surface.