JPS5738458A - Corona discharger of electrophotographic copier or the like - Google Patents

Corona discharger of electrophotographic copier or the like

Info

Publication number
JPS5738458A
JPS5738458A JP11397280A JP11397280A JPS5738458A JP S5738458 A JPS5738458 A JP S5738458A JP 11397280 A JP11397280 A JP 11397280A JP 11397280 A JP11397280 A JP 11397280A JP S5738458 A JPS5738458 A JP S5738458A
Authority
JP
Japan
Prior art keywords
shield
photoreceptor
wire
half cycle
same time
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.)
Pending
Application number
JP11397280A
Other languages
Japanese (ja)
Inventor
Noriaki Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
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 by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP11397280A priority Critical patent/JPS5738458A/en
Publication of JPS5738458A publication Critical patent/JPS5738458A/en
Pending 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
    • G03G15/0291—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)

Abstract

PURPOSE:To greatly increase the using efficiency of current, by insulating a shield, applying an AC high voltage power source to a metallic wire within the shield via a capacitor and at the same time grounding the metallic wire via a diode and a resistance. CONSTITUTION:A metallic wire 3 and a shield 2 are positively electrified with the positive half cycle applied from an AC power source 5. While the negative voltage is applied for a short time to the wire 3 by the time constant of a cirxcuit comprising a resistance 7 and a capacitor 4 in the next negative half cycle. Thus the discharged current flows from the wire 3 to a photoreceptor 1 to electrify the photoreceptor 1 to the positive charge. At the same time, the shield 2 that is electrified to the positive charge in the previous half cycle is neutralized. Accordingly no effect of the previous discharge is left to the shield 2, and at the same time the amount of charge to electrify the shield 2 can be reduced since the ground electrostatic capacity of the shield 2 is small, and most of the discharged current flows to the photoreceptor 1. In such constitution, the using efficiency of current is increased.
JP11397280A 1980-08-21 1980-08-21 Corona discharger of electrophotographic copier or the like Pending JPS5738458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11397280A JPS5738458A (en) 1980-08-21 1980-08-21 Corona discharger of electrophotographic copier or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11397280A JPS5738458A (en) 1980-08-21 1980-08-21 Corona discharger of electrophotographic copier or the like

Publications (1)

Publication Number Publication Date
JPS5738458A true JPS5738458A (en) 1982-03-03

Family

ID=14625821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11397280A Pending JPS5738458A (en) 1980-08-21 1980-08-21 Corona discharger of electrophotographic copier or the like

Country Status (1)

Country Link
JP (1) JPS5738458A (en)

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