JPS56147162A - Image forming method - Google Patents

Image forming method

Info

Publication number
JPS56147162A
JPS56147162A JP5142380A JP5142380A JPS56147162A JP S56147162 A JPS56147162 A JP S56147162A JP 5142380 A JP5142380 A JP 5142380A JP 5142380 A JP5142380 A JP 5142380A JP S56147162 A JPS56147162 A JP S56147162A
Authority
JP
Japan
Prior art keywords
photoreceptor
grating
control
image
voltage
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
JP5142380A
Other languages
Japanese (ja)
Inventor
Kimio Nakahata
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP5142380A priority Critical patent/JPS56147162A/en
Priority to US06/191,030 priority patent/US4402591A/en
Priority to DE19803036731 priority patent/DE3036731A1/en
Priority to GB8031336A priority patent/GB2062548B/en
Publication of JPS56147162A publication Critical patent/JPS56147162A/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
    • G03G15/0266—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)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain an image always free from fog, by providing a pretransfer corona discharger having a control grating between a developing zone and a transfer zone, and changing bias voltage in accordance with image control. CONSTITUTION:Control grating 5 is provided opposite to and about 1mm. apart from the surface of photoreceptor 1 in the opening of pretransfer corona discharger 2 having shield 2a and discharge electrode 3, and voltage is applied to grating 5 from bias voltage source 6. This voltage is changed gradually in accordance with change of an image controller, and electric fields promotive and represssive of corona ions are formed between the surface potential of photoreceptor 1 and control grating 5, thus permitting a fogging toner on photoreceptor 1 to be converted into an opposite polarity, and not to be transferred to a transfer material.
JP5142380A 1979-09-29 1980-04-18 Image forming method Pending JPS56147162A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5142380A JPS56147162A (en) 1980-04-18 1980-04-18 Image forming method
US06/191,030 US4402591A (en) 1979-09-29 1980-09-26 Electrophotographic apparatus
DE19803036731 DE3036731A1 (en) 1979-09-29 1980-09-29 ELECTROPHOTOGRAPHIC DEVICE
GB8031336A GB2062548B (en) 1979-09-29 1980-09-29 Electrophotographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5142380A JPS56147162A (en) 1980-04-18 1980-04-18 Image forming method

Publications (1)

Publication Number Publication Date
JPS56147162A true JPS56147162A (en) 1981-11-14

Family

ID=12886511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5142380A Pending JPS56147162A (en) 1979-09-29 1980-04-18 Image forming method

Country Status (1)

Country Link
JP (1) JPS56147162A (en)

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