JPS5752061A - Method for forming electrostatic latent image - Google Patents

Method for forming electrostatic latent image

Info

Publication number
JPS5752061A
JPS5752061A JP12751780A JP12751780A JPS5752061A JP S5752061 A JPS5752061 A JP S5752061A JP 12751780 A JP12751780 A JP 12751780A JP 12751780 A JP12751780 A JP 12751780A JP S5752061 A JPS5752061 A JP S5752061A
Authority
JP
Japan
Prior art keywords
corona discharger
electrostatic latent
electric
electric field
arrow
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
JP12751780A
Other languages
Japanese (ja)
Inventor
Masayoshi Furuichi
Makoto Kitahara
Shozo Ishikawa
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 Finetech Nisca Inc
Original Assignee
Copyer 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 Copyer Co Ltd filed Critical Copyer Co Ltd
Priority to JP12751780A priority Critical patent/JPS5752061A/en
Publication of JPS5752061A publication Critical patent/JPS5752061A/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
    • G03G15/045—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 with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas

Landscapes

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

Abstract

PURPOSE:To freely obtain appropriate voltage and to form electrostatic latent images of original images, by adjusting electric fields of the first corona discharger and the second corona discharger whose polarization is reverse to that of the first corona discharger. CONSTITUTION:Polarizations which generate positive electric charges to an insulating layer 26 and a photosensitive element layer 27 at an electric field of positive electric charge by the first corona discharger 15 in the dark, and, by the rotation of a photosensitive drum along the direction shown by the arrow, the polarity is reversed by receiving the electric field of the negative electric charge of the second corona discharger 19 and thus polarization is produced. When the drum is rotated further along the direction of the arrow, the electric field of the photosensitive element layer 27 disappears by a light 24 of a lamp 23 in the whole exposing section. By controlling the electric charges polarized to the insulating layer in accordance with the variation in quantity of light for exposure of the original images at the second corona discharger 19, electrostatic latent images which meet originals are formed.
JP12751780A 1980-09-14 1980-09-14 Method for forming electrostatic latent image Pending JPS5752061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12751780A JPS5752061A (en) 1980-09-14 1980-09-14 Method for forming electrostatic latent image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12751780A JPS5752061A (en) 1980-09-14 1980-09-14 Method for forming electrostatic latent image

Publications (1)

Publication Number Publication Date
JPS5752061A true JPS5752061A (en) 1982-03-27

Family

ID=14961963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12751780A Pending JPS5752061A (en) 1980-09-14 1980-09-14 Method for forming electrostatic latent image

Country Status (1)

Country Link
JP (1) JPS5752061A (en)

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