JPS57147665A - Electrophotographic method - Google Patents

Electrophotographic method

Info

Publication number
JPS57147665A
JPS57147665A JP3356081A JP3356081A JPS57147665A JP S57147665 A JPS57147665 A JP S57147665A JP 3356081 A JP3356081 A JP 3356081A JP 3356081 A JP3356081 A JP 3356081A JP S57147665 A JPS57147665 A JP S57147665A
Authority
JP
Japan
Prior art keywords
charger
image
copy
potential
photosensitive drum
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
JP3356081A
Other languages
Japanese (ja)
Inventor
Wahei Tokuda
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 JP3356081A priority Critical patent/JPS57147665A/en
Publication of JPS57147665A publication Critical patent/JPS57147665A/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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • G03G15/04045—Details of illuminating systems, e.g. lamps, reflectors for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)

Abstract

PURPOSE:To compensate the fluctuation of the picture quality based on the number of times of copy, by displacing the position, where an image is exposed through a charger with the back opened, along the rotation direction of a photosensitive drum surface. CONSTITUTION:A photosensitive drum surface 5 consists of a photosensitive layer having a surface insulating layer, and a latent image is formed through uniform charging due to a charger 6, discharging and image exposure due to charger 7 which exposes the image simultaneously, and uniform exposure due to a lamp 8. The potential of the latent image is changed when copy is repeated; and therefore, a cam 14 is rotated to move the wall of the charger 7, and the position for image exposure is displaced in the open part of the charger 7, thus compensating the variance of the potential.
JP3356081A 1981-03-09 1981-03-09 Electrophotographic method Pending JPS57147665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3356081A JPS57147665A (en) 1981-03-09 1981-03-09 Electrophotographic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3356081A JPS57147665A (en) 1981-03-09 1981-03-09 Electrophotographic method

Publications (1)

Publication Number Publication Date
JPS57147665A true JPS57147665A (en) 1982-09-11

Family

ID=12389929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3356081A Pending JPS57147665A (en) 1981-03-09 1981-03-09 Electrophotographic method

Country Status (1)

Country Link
JP (1) JPS57147665A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526179A1 (en) * 1982-04-30 1983-11-04 Canon Kk TREATMENT UNIT MOUNTED ON IMAGE TRAINING APPARATUS AND APPARATUS
JPS63187262A (en) * 1987-01-29 1988-08-02 Canon Inc Developing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526179A1 (en) * 1982-04-30 1983-11-04 Canon Kk TREATMENT UNIT MOUNTED ON IMAGE TRAINING APPARATUS AND APPARATUS
JPS63187262A (en) * 1987-01-29 1988-08-02 Canon Inc Developing method

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