JPS5688151A - Recorder - Google Patents

Recorder

Info

Publication number
JPS5688151A
JPS5688151A JP16607579A JP16607579A JPS5688151A JP S5688151 A JPS5688151 A JP S5688151A JP 16607579 A JP16607579 A JP 16607579A JP 16607579 A JP16607579 A JP 16607579A JP S5688151 A JPS5688151 A JP S5688151A
Authority
JP
Japan
Prior art keywords
charge
photosensitive drum
corona wire
charger
control circuit
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
JP16607579A
Other languages
Japanese (ja)
Other versions
JPS6223863B2 (en
Inventor
Masayuki Hida
Junzo Nakajima
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16607579A priority Critical patent/JPS5688151A/en
Publication of JPS5688151A publication Critical patent/JPS5688151A/en
Publication of JPS6223863B2 publication Critical patent/JPS6223863B2/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
    • G03G15/0266—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)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To eliminate uneven character of printing densitites by detecting the charge quantity applied on the surface of a charge latent image forming medium by a charge supply means and feeding the output signal thereof back to the charge supply means. CONSTITUTION:This recorder is provided with a photosensitive drum 1, a charger 2, a corona wire 16, a high voltage source 17 for applying voltage to the corona wire 16, a control circuit 18 and a surface potential sensor 19. The charge quantity on the photosensitive drum 1 surface is detected with the surface potential sensor 19 installed noncontactually with the photosensitive drum 1 behind the charger 2, and the result of this detection is fed back to the control circuit 18 which controls the high voltage power source 17. Thereby, the voltage to be applied to the corona wire 16 is so controlled that required charge potential is obtained.
JP16607579A 1979-12-20 1979-12-20 Recorder Granted JPS5688151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16607579A JPS5688151A (en) 1979-12-20 1979-12-20 Recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16607579A JPS5688151A (en) 1979-12-20 1979-12-20 Recorder

Publications (2)

Publication Number Publication Date
JPS5688151A true JPS5688151A (en) 1981-07-17
JPS6223863B2 JPS6223863B2 (en) 1987-05-26

Family

ID=15824509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16607579A Granted JPS5688151A (en) 1979-12-20 1979-12-20 Recorder

Country Status (1)

Country Link
JP (1) JPS5688151A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788739A (en) * 1972-06-21 1974-01-29 Xerox Corp Image compensation method and apparatus for electrophotographic devices
JPS5317339A (en) * 1976-07-30 1978-02-17 Canon Inc Method and device for stabilizing surface potential
JPS5363020A (en) * 1976-11-18 1978-06-06 Ricoh Co Ltd Image control method
JPS549631A (en) * 1977-06-22 1979-01-24 Fujitsu Ltd Automatic control system for charging amount
JPS5425831A (en) * 1977-07-29 1979-02-27 Canon Inc Latent image stabilizing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788739A (en) * 1972-06-21 1974-01-29 Xerox Corp Image compensation method and apparatus for electrophotographic devices
JPS5317339A (en) * 1976-07-30 1978-02-17 Canon Inc Method and device for stabilizing surface potential
JPS5363020A (en) * 1976-11-18 1978-06-06 Ricoh Co Ltd Image control method
JPS549631A (en) * 1977-06-22 1979-01-24 Fujitsu Ltd Automatic control system for charging amount
JPS5425831A (en) * 1977-07-29 1979-02-27 Canon Inc Latent image stabilizing method

Also Published As

Publication number Publication date
JPS6223863B2 (en) 1987-05-26

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