JPS5699357A - Charging voltage stabilization method for copying machine - Google Patents

Charging voltage stabilization method for copying machine

Info

Publication number
JPS5699357A
JPS5699357A JP91280A JP91280A JPS5699357A JP S5699357 A JPS5699357 A JP S5699357A JP 91280 A JP91280 A JP 91280A JP 91280 A JP91280 A JP 91280A JP S5699357 A JPS5699357 A JP S5699357A
Authority
JP
Japan
Prior art keywords
photoreceptor
surface potential
charger
reference value
copying machine
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
JP91280A
Other languages
Japanese (ja)
Inventor
Koji Yamanobe
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 JP91280A priority Critical patent/JPS5699357A/en
Publication of JPS5699357A publication Critical patent/JPS5699357A/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 maintain surface potential of a photoreceptor always constant and to obtain a stable image, by generating correction voltage in accordance with the result of measurement of the surface potential, and applying this to a corona charger. CONSTITUTION:The surface potential of photoreceptor 1 soon after charging with charger 2 is measured using electrometer probe 3.When the measured value is equal to the reference value, application voltage to corona charger 4 provided at the position before the exposure point of photoreceptor 1 is made zero, when it is higher than the reference value, AC high voltage 12 corresponding to this difference is applied to corona charger 4, and when lower, DC high voltage 13 is applied to charger 4, permitting surface potential of photoreceptor 1 to be corrected and to become the reference value before exposure.
JP91280A 1980-01-10 1980-01-10 Charging voltage stabilization method for copying machine Pending JPS5699357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP91280A JPS5699357A (en) 1980-01-10 1980-01-10 Charging voltage stabilization method for copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP91280A JPS5699357A (en) 1980-01-10 1980-01-10 Charging voltage stabilization method for copying machine

Publications (1)

Publication Number Publication Date
JPS5699357A true JPS5699357A (en) 1981-08-10

Family

ID=11486880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP91280A Pending JPS5699357A (en) 1980-01-10 1980-01-10 Charging voltage stabilization method for copying machine

Country Status (1)

Country Link
JP (1) JPS5699357A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622703A2 (en) * 1993-04-28 1994-11-02 Konica Corporation Charging unit
US8107839B2 (en) * 2006-08-15 2012-01-31 Kyocera Mita Corporation Image forming apparatus with bias applying device for applying a charging bias to a charging roller and with a bias corrector
WO2016165766A1 (en) * 2015-04-15 2016-10-20 Hewlett-Packard Indigo B.V. Applying a corrective voltage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622703A2 (en) * 1993-04-28 1994-11-02 Konica Corporation Charging unit
EP0622703A3 (en) * 1993-04-28 1995-08-09 Konishiroku Photo Ind Charging unit.
US8107839B2 (en) * 2006-08-15 2012-01-31 Kyocera Mita Corporation Image forming apparatus with bias applying device for applying a charging bias to a charging roller and with a bias corrector
WO2016165766A1 (en) * 2015-04-15 2016-10-20 Hewlett-Packard Indigo B.V. Applying a corrective voltage
US10191407B2 (en) 2015-04-15 2019-01-29 Hp Indigo B.V. Applying a corrective voltage
US10663878B2 (en) 2015-04-15 2020-05-26 Hp Indigo B.V. Applying a corrective voltage

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