GB1451647A - - Google Patents

Info

Publication number
GB1451647A
GB1451647A GB5953873A GB5953873A GB1451647A GB 1451647 A GB1451647 A GB 1451647A GB 5953873 A GB5953873 A GB 5953873A GB 5953873 A GB5953873 A GB 5953873A GB 1451647 A GB1451647 A GB 1451647A
Authority
GB
United Kingdom
Prior art keywords
screen
shield
corona generating
current
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5953873A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to GB5953873A priority Critical patent/GB1451647A/en
Priority to US510336A priority patent/US3909614A/en
Priority to CA215,688A priority patent/CA1034640A/en
Publication of GB1451647A publication Critical patent/GB1451647A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0266—Arrangements for controlling the amount of charge
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

1451647 Automatic control of corona generating apparatus XEROX CORP 21 Dec 1973 59538/73 Heading G3R A corona generating device for use in an electrostatographic copying machine includes a shield which may be connected to a screen located adjacent a surface to be electrostatically charged. The shield or screen current is sensed and its value used to control the current supplied to a corona generating wire so as to maintain the shield or screen potential constant. As shown, a scorotron 10 comprises a corona generating wire or coronode 11 enclosed by a metal shield 12 connected to a screen 13. The screen current is sensed by resistors 16, 17 which provide one input to a regulator 18 which operates to vary the current supply to the wire 11 so as to maintain the screen voltage constant. The shield 12 may alternatively be electrically isolated from the screen 13 and voltage divider 16, 17, and the screen 13 may be omitted.
GB5953873A 1973-12-21 1973-12-21 Expired GB1451647A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5953873A GB1451647A (en) 1973-12-21 1973-12-21
US510336A US3909614A (en) 1973-12-21 1974-09-30 Scorotron power supply circuit
CA215,688A CA1034640A (en) 1973-12-21 1974-12-09 Electrostatographic power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5953873A GB1451647A (en) 1973-12-21 1973-12-21

Publications (1)

Publication Number Publication Date
GB1451647A true GB1451647A (en) 1976-10-06

Family

ID=10483953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5953873A Expired GB1451647A (en) 1973-12-21 1973-12-21

Country Status (3)

Country Link
US (1) US3909614A (en)
CA (1) CA1034640A (en)
GB (1) GB1451647A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077709A (en) * 1975-08-26 1978-03-07 Xerox Corporation Transfer charge control system
DE2723673A1 (en) * 1976-05-26 1977-12-08 Canon Kk METHOD AND DEVICE FOR CHARGING BY CORONA DISCHARGE
JPS5343537A (en) * 1976-10-01 1978-04-19 Olympus Optical Co Ltd Corona charger
JPH0675222B2 (en) * 1983-08-06 1994-09-21 株式会社リコー Charger control device for photoconductor
JPH0673042B2 (en) * 1983-09-07 1994-09-14 株式会社リコー Charger control device for photoconductor
US4591713A (en) * 1984-01-03 1986-05-27 Xerox Corporation Efficient, self-limiting corona device for positive or negative charging
JPH032358U (en) * 1989-05-26 1991-01-10
JPH03279973A (en) * 1990-03-28 1991-12-11 Murata Mfg Co Ltd High voltage power source circuit for electrostatic charger
US5907155A (en) * 1998-01-08 1999-05-25 Xerox Corporation Constant DC offset coronode voltage tracking circuit
US7763853B2 (en) * 2007-05-22 2010-07-27 Xerox Corporation Dicorotron having adjustable wire height
IL208218A (en) * 2010-09-19 2014-08-31 Yefim Riskin Method of automatic ion balance control in bipolar ion generators and device thereof
US9843169B2 (en) 2015-01-21 2017-12-12 Filt Air Ltd Bipolar ionizer with external ion imbalance indicator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068356A (en) * 1960-06-15 1962-12-11 Xerox Corp Xerographic charging apparatus
BE715685A (en) * 1967-07-06 1968-10-16
US3819942A (en) * 1973-05-07 1974-06-25 Savin Business Machines Corp Regulated power supply for corona charging unit

Also Published As

Publication number Publication date
US3909614A (en) 1975-09-30
CA1034640A (en) 1978-07-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee