JPS55153947A - Electrophotographic copying method - Google Patents

Electrophotographic copying method

Info

Publication number
JPS55153947A
JPS55153947A JP6195479A JP6195479A JPS55153947A JP S55153947 A JPS55153947 A JP S55153947A JP 6195479 A JP6195479 A JP 6195479A JP 6195479 A JP6195479 A JP 6195479A JP S55153947 A JPS55153947 A JP S55153947A
Authority
JP
Japan
Prior art keywords
layer
receptor
reverse polarities
charge
superposed
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
JP6195479A
Other languages
Japanese (ja)
Inventor
Tsutomu Sato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6195479A priority Critical patent/JPS55153947A/en
Publication of JPS55153947A publication Critical patent/JPS55153947A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

PURPOSE: To easily obtain an electrostatic latent image with reverse polarities by simultaneously subjecting a predetermined receptor having layers for transferring charges with reverse polarities to DC bias-superposed AC corona charging and exposure through the light image of an original.
CONSTITUTION: Receptor 1 is composed of the first charge transferring layer 11, charge generating layer 12 and the second charge transferring layer 13 laminated on electrically conductive substrate 10 in this order, and layers 11, 13 transfer charge carriers with reverse polarities. Receptor 1 is exposed through the light image of an original, and it is simultaneously AC-charged with AC corona from charger 2 by applying an AC discharge voltage on which DC bias with the same polarity as the polarity of a carrier to be transferred by layer 11 has been superposed. Thus, the image portion of receptor 1 is positively charged, and since a carrier generated in layer 12 is compensated, the nonimage portion is negatively charged.
COPYRIGHT: (C)1980,JPO&Japio
JP6195479A 1979-05-19 1979-05-19 Electrophotographic copying method Pending JPS55153947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6195479A JPS55153947A (en) 1979-05-19 1979-05-19 Electrophotographic copying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6195479A JPS55153947A (en) 1979-05-19 1979-05-19 Electrophotographic copying method

Publications (1)

Publication Number Publication Date
JPS55153947A true JPS55153947A (en) 1980-12-01

Family

ID=13186088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6195479A Pending JPS55153947A (en) 1979-05-19 1979-05-19 Electrophotographic copying method

Country Status (1)

Country Link
JP (1) JPS55153947A (en)

Similar Documents

Publication Publication Date Title
GB1361688A (en) Electrophotographic process
JPS5454041A (en) Compliex image formation
JPS5532050A (en) Composite-copying method of information image
JPS5687055A (en) Image synthesizing and recording method
JPS55153947A (en) Electrophotographic copying method
JPS60216361A (en) Brush electrostatic charging and transferring device
JPS5528073A (en) Transfer method
JPS561954A (en) Electrostatic transferring method
JPS5543512A (en) Reversal copying method
JPS55118044A (en) Electrophotographic receptor
JPS55101973A (en) Electrophotographic copying method and apparatus thereof
JPS55113064A (en) Electrophotographic method and its apparatus
JPS55111951A (en) Electrophotographic method
JPS5543566A (en) Electrophotographic photoreceptor
JPS5672469A (en) Method and device for transfer
JPS55101962A (en) Method and apparatus for electrophotography
JPS5515151A (en) Electrophotographic method
JPS5587170A (en) Method and apparatus for electrophotography
JPS55121448A (en) Electrophotographic receptor
JPS56161563A (en) Normal and reversal copying method
JPS54106238A (en) Dichroic recording method
JPS5680056A (en) Toner image transferring and sheet separating method
JPS5565967A (en) Recording system
JPS54134634A (en) Static latent image formation process
JPS55129352A (en) Electrophotographic composite receptor