JPS56168665A - Method for preventing copied image from density deterioration in electrophotographic copying machine - Google Patents

Method for preventing copied image from density deterioration in electrophotographic copying machine

Info

Publication number
JPS56168665A
JPS56168665A JP7149780A JP7149780A JPS56168665A JP S56168665 A JPS56168665 A JP S56168665A JP 7149780 A JP7149780 A JP 7149780A JP 7149780 A JP7149780 A JP 7149780A JP S56168665 A JPS56168665 A JP S56168665A
Authority
JP
Japan
Prior art keywords
copying machine
electrophotographic copying
photoreceptor
preventing
density
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
JP7149780A
Other languages
Japanese (ja)
Inventor
Shinichi Miura
Shunichi Kuwabara
Yukimoto Aizawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7149780A priority Critical patent/JPS56168665A/en
Publication of JPS56168665A publication Critical patent/JPS56168665A/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)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To prevent deterioration of image density in high speed copying, in an electrophotographic copying machine using an Se-Te alloy layer as a photoconductive layer, by maintaining a charging voltage for main corona discharging in a specified range in raising the moving speed of a photoreceptor. CONSTITUTION:A charging voltage for main corona discharging is kept in 6- 10KV in order to raise the movement speed of the photoreceptor of an electrophotographic copying machine having a photoreceptor made by forming an Se-Te alloy layer on a conductive substrate to 19cm/s-110cm/s, thus permitting deterioration of the difference of copying density between solid black parts and solid white parts in the copy to be prevented and therefore a sharp copy image to be obtained.
JP7149780A 1980-05-30 1980-05-30 Method for preventing copied image from density deterioration in electrophotographic copying machine Pending JPS56168665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7149780A JPS56168665A (en) 1980-05-30 1980-05-30 Method for preventing copied image from density deterioration in electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7149780A JPS56168665A (en) 1980-05-30 1980-05-30 Method for preventing copied image from density deterioration in electrophotographic copying machine

Publications (1)

Publication Number Publication Date
JPS56168665A true JPS56168665A (en) 1981-12-24

Family

ID=13462357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7149780A Pending JPS56168665A (en) 1980-05-30 1980-05-30 Method for preventing copied image from density deterioration in electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS56168665A (en)

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