JPS5766448A - Forming method for electrostatic image and powder image - Google Patents

Forming method for electrostatic image and powder image

Info

Publication number
JPS5766448A
JPS5766448A JP14161080A JP14161080A JPS5766448A JP S5766448 A JPS5766448 A JP S5766448A JP 14161080 A JP14161080 A JP 14161080A JP 14161080 A JP14161080 A JP 14161080A JP S5766448 A JPS5766448 A JP S5766448A
Authority
JP
Japan
Prior art keywords
image
dielectric layer
polarization
photoconductive layer
electrostatic image
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
JP14161080A
Other languages
Japanese (ja)
Inventor
Masayoshi Furuichi
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 JP14161080A priority Critical patent/JPS5766448A/en
Publication of JPS5766448A publication Critical patent/JPS5766448A/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 obtain a negative or positive electrostatic image by the polarization of a dielectric layer, by using a photoreceptor consisting of the dielectric layer and a photoconductive layer. CONSTITUTION:A photosensitive drum 1' having a dielectric layer 2 and a photoconductive layer 3 is charged positively by a charger to polarize both the layers. Then, an original image, while exposing by a lamp 6, is charged negatively by a charger 5 to convert a part of the photoconductive layer 3, irradiated with intense light, into a conductor, and the dielectric layer 3 is applied with an intense electric field to inverse the polarization strongly. At last, the image is exposed uniformly to a lamp 7' to eliminate the polarization of the photoconductive layer 3. The intensity ratio between the 1st charge and 2nd one is made different to obtain a negative or positive electrostatic image.
JP14161080A 1980-10-10 1980-10-10 Forming method for electrostatic image and powder image Pending JPS5766448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14161080A JPS5766448A (en) 1980-10-10 1980-10-10 Forming method for electrostatic image and powder image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14161080A JPS5766448A (en) 1980-10-10 1980-10-10 Forming method for electrostatic image and powder image

Publications (1)

Publication Number Publication Date
JPS5766448A true JPS5766448A (en) 1982-04-22

Family

ID=15296017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14161080A Pending JPS5766448A (en) 1980-10-10 1980-10-10 Forming method for electrostatic image and powder image

Country Status (1)

Country Link
JP (1) JPS5766448A (en)

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