JPS56116057A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPS56116057A
JPS56116057A JP1890580A JP1890580A JPS56116057A JP S56116057 A JPS56116057 A JP S56116057A JP 1890580 A JP1890580 A JP 1890580A JP 1890580 A JP1890580 A JP 1890580A JP S56116057 A JPS56116057 A JP S56116057A
Authority
JP
Japan
Prior art keywords
photoreceptor
point
roller
points
latent image
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.)
Granted
Application number
JP1890580A
Other languages
Japanese (ja)
Other versions
JPS623948B2 (en
Inventor
Hatsuo Tajima
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 JP1890580A priority Critical patent/JPS56116057A/en
Publication of JPS56116057A publication Critical patent/JPS56116057A/en
Publication of JPS623948B2 publication Critical patent/JPS623948B2/ja
Granted 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)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a copied picture with invariably uniform density, by gradually increasing the gap between a corona discharger and photoreceptor surface. CONSTITUTION:The diameter of roller 3a at the side of cleaning device 9 is made smaller than that of the other roller 2, and while axial cores of both rollers 2 and 3a are arranged in parallel to the same plane, photoreceptor 1 slants down from point A to point B. The gradient of photoreceptor 1 is so determined that points A and B will be held equal in electrostatic latent image potential during development; for example, photoreceptor 1 slants so that distance D between the flank of shielded case 4a and the surface of photoreceptor 1 will be 2mm. at point A and 4mm. at point B in the figure. Further, a corona applied voltage is set to 6.0kV. As a result, the charging potential decreases gradually between points A and B during the development processing, the electrostatic latent image has a uniform potential over the entire area.
JP1890580A 1980-02-18 1980-02-18 Copying machine Granted JPS56116057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1890580A JPS56116057A (en) 1980-02-18 1980-02-18 Copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1890580A JPS56116057A (en) 1980-02-18 1980-02-18 Copying machine

Publications (2)

Publication Number Publication Date
JPS56116057A true JPS56116057A (en) 1981-09-11
JPS623948B2 JPS623948B2 (en) 1987-01-28

Family

ID=11984604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1890580A Granted JPS56116057A (en) 1980-02-18 1980-02-18 Copying machine

Country Status (1)

Country Link
JP (1) JPS56116057A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245495A (en) * 1975-10-07 1977-04-09 Toshin Giken:Kk Packing body
JPS5476161A (en) * 1977-11-29 1979-06-18 Ricoh Co Ltd Driving method of photoreceptor in electrostatic copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245495A (en) * 1975-10-07 1977-04-09 Toshin Giken:Kk Packing body
JPS5476161A (en) * 1977-11-29 1979-06-18 Ricoh Co Ltd Driving method of photoreceptor in electrostatic copying machine

Also Published As

Publication number Publication date
JPS623948B2 (en) 1987-01-28

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