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：CA1135337A

公开(公告)日：1982-11-09

申请号：CA324003

申请日：1979-03-22

Applicant: IBM

Inventor： FORD LELAND W ,  RAMIREZ ALBERTO M ,  SMITH GERALD L

IPC: H02M3/28 ,  H01F27/28 ,  H01F30/10 ,  H02M3/337 ,  H02M7/10 ,  H02M7/5383 ,  H02M7/53846 ,  H02M3/06 ,  H02M9/04 ,  G03G15/00

Abstract: HIGH FREQUENCY HIGH VOLTAGE POWER SUPPLY A compact and lightweight power supply particularly suited for use as a high voltage supply capable of switching voltage values in short time. The high voltage output is compared against a desired reference value to produce a difference voltage which is integrated. The integrated difference voltage is converted to recurrent pulses having a corresponding width. The pulses are applied alternately to the opposite ends of a centertapped primary winding of a specially wound transformer characterized by a specially wound secondary winding and an air-gapped E-shaped core linking the primary and secondary windings. The secondary voltage is applied to a voltage multiplier circuit to produce the high voltage output of the power supply.

公开(公告)号：FR2423813A1

公开(公告)日：1979-11-16

申请号：FR7906428

申请日：1979-03-08

Applicant: IBM

Inventor： FORD LELAND W ,  RAMIREZ ALBERTO M ,  SMITH GERALD L

IPC: H02M3/28 ,  H01F27/28 ,  H01F30/10 ,  H02M3/337 ,  H02M7/10 ,  H02M7/5383 ,  H02M7/53846 ,  G05F1/12 ,  G03G21/00

Abstract: A compact and lightweight power supply particularly suited for use as a high voltage supply capable of switching voltage values in short time. The high voltage output is compared against a desired reference value to produce a difference voltage which is integrated. The integrated difference voltage is converted to recurrent pulses having a corresponding width. The pulses are applied alternately to the opposite ends of a centertapped primary winding of a specially wound transformer characterized by a specially wound secondary winding and an air-gapped E-shaped core linking the primary and secondary windings. The secondary voltage is applied to a voltage multiplier circuit to produce the high voltage output of the power supply.

公开(公告)号：DE2915218A1

公开(公告)日：1979-10-31

申请号：DE2915218

申请日：1979-04-14

Applicant: IBM

Inventor： FORD LELAND W ,  RAMIREZ ALBERTO M ,  SMITH GERALD L

IPC: H02M3/28 ,  H01F27/28 ,  H01F30/10 ,  H02M3/337 ,  H02M7/10 ,  H02M7/5383 ,  H02M7/53846 ,  H02P13/22

Abstract: A compact and lightweight power supply particularly suited for use as a high voltage supply capable of switching voltage values in short time. The high voltage output is compared against a desired reference value to produce a difference voltage which is integrated. The integrated difference voltage is converted to recurrent pulses having a corresponding width. The pulses are applied alternately to the opposite ends of a centertapped primary winding of a specially wound transformer characterized by a specially wound secondary winding and an air-gapped E-shaped core linking the primary and secondary windings. The secondary voltage is applied to a voltage multiplier circuit to produce the high voltage output of the power supply.