JPS55117163A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS55117163A
JPS55117163A JP2489579A JP2489579A JPS55117163A JP S55117163 A JPS55117163 A JP S55117163A JP 2489579 A JP2489579 A JP 2489579A JP 2489579 A JP2489579 A JP 2489579A JP S55117163 A JPS55117163 A JP S55117163A
Authority
JP
Japan
Prior art keywords
lamp
values
destaticizer
corrected
detected
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
JP2489579A
Other languages
Japanese (ja)
Inventor
Koji Suzuki
Yoshitaka Kawamo
Yoshikazu Yokomizo
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 JP2489579A priority Critical patent/JPS55117163A/en
Publication of JPS55117163A publication Critical patent/JPS55117163A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To obtain the device which is capable of forming stable images without decreasing speed by detecting respectively one of the values of the surface potentials of the bright part and dark part on a recording body before and after the image formation and controlling the voltage of chargers by the outputs of both. CONSTITUTION:Electrostatic latent images are formed on a photosensitive drum 47 by a primary charger 51, secondary destaticizer 69, full surface exposure lamp 68, blank exposure lamp 70, etc. At this time, a surface electrometer 67 is provided between the lamp 68 and developing device 65. First, the lamp 70 is lighted and the bright part potential is detected with the electrometer 67. Thence, the lamp 70 is put out and the dark part portential is detected. These are stored in circuits 112 and 111 respectively. These detection outputs are compared of the values having been stored and the values to be corrected by an arithmetic circuit and integrating circuit and the currents of a charger 57 and destaticizer 69 are controlled by way of high voltage power sources 123, 124. Thereby, the development bias may be corrected at every copying and the stable images may be obtained without decreasing speed.
JP2489579A 1979-03-02 1979-03-02 Image forming device Pending JPS55117163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2489579A JPS55117163A (en) 1979-03-02 1979-03-02 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2489579A JPS55117163A (en) 1979-03-02 1979-03-02 Image forming device

Publications (1)

Publication Number Publication Date
JPS55117163A true JPS55117163A (en) 1980-09-09

Family

ID=12150912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2489579A Pending JPS55117163A (en) 1979-03-02 1979-03-02 Image forming device

Country Status (1)

Country Link
JP (1) JPS55117163A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57144570A (en) * 1981-03-04 1982-09-07 Fuji Xerox Co Ltd Controller of electronic copier
JPS57145634U (en) * 1981-03-03 1982-09-13
FR2618918A1 (en) * 1987-07-28 1989-02-03 Canon Kk ELECTROPHOTOGRAPHIC APPARATUS AND IMAGE FORMING METHOD

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317339A (en) * 1976-07-30 1978-02-17 Canon Inc Method and device for stabilizing surface potential
JPS5425831A (en) * 1977-07-29 1979-02-27 Canon Inc Latent image stabilizing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317339A (en) * 1976-07-30 1978-02-17 Canon Inc Method and device for stabilizing surface potential
JPS5425831A (en) * 1977-07-29 1979-02-27 Canon Inc Latent image stabilizing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145634U (en) * 1981-03-03 1982-09-13
JPS6012682Y2 (en) * 1981-03-03 1985-04-24 マツダ株式会社 Circulation device for tightening blocks for cylinder head processing
JPS57144570A (en) * 1981-03-04 1982-09-07 Fuji Xerox Co Ltd Controller of electronic copier
FR2618918A1 (en) * 1987-07-28 1989-02-03 Canon Kk ELECTROPHOTOGRAPHIC APPARATUS AND IMAGE FORMING METHOD

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