JPS57119377A - Method and device for formation of image - Google Patents

Method and device for formation of image

Info

Publication number
JPS57119377A
JPS57119377A JP551381A JP551381A JPS57119377A JP S57119377 A JPS57119377 A JP S57119377A JP 551381 A JP551381 A JP 551381A JP 551381 A JP551381 A JP 551381A JP S57119377 A JPS57119377 A JP S57119377A
Authority
JP
Japan
Prior art keywords
image
corona
exposure
discharger
photoreceptor
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
JP551381A
Other languages
Japanese (ja)
Inventor
Nobuo Tsukada
Hiroaki Tsuchiya
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 JP551381A priority Critical patent/JPS57119377A/en
Publication of JPS57119377A publication Critical patent/JPS57119377A/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 improve reproduction image quality by changing the exposure position of the light image or light signal to a photoreceptor relatively with respect to the center of the electric discharge of a corona discharge means and at the same time by changing exposure thereby selecting the E-V characteristics of the curve by the relation between the exposure of the light image suited to the image quality to be reproduced and the potential of the perfected latent image. CONSTITUTION:This relates to a method and device of forming the latent image correspondig to the original image on a photoreceptor 5 having an insulation layer on the surface by the discharge of the DC corona from the 1st corona discharger 6 and the AC corona from the 2nd corona discharger 7, the image irradiation of the original image through the discharger 7, and further the full surface irradiation with a lamp 8, wherein the exposure position to the photoreceptor 5 is changed relatively with respect to the center of the discharge of the discharger 7; at the same time, the exposure of the light image or light signal is also changed to prevent the generation of photographic fogs and the gradation of the original is reproduced faithfully within the range meeting the object.
JP551381A 1981-01-16 1981-01-16 Method and device for formation of image Pending JPS57119377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP551381A JPS57119377A (en) 1981-01-16 1981-01-16 Method and device for formation of image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP551381A JPS57119377A (en) 1981-01-16 1981-01-16 Method and device for formation of image

Publications (1)

Publication Number Publication Date
JPS57119377A true JPS57119377A (en) 1982-07-24

Family

ID=11613264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP551381A Pending JPS57119377A (en) 1981-01-16 1981-01-16 Method and device for formation of image

Country Status (1)

Country Link
JP (1) JPS57119377A (en)

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