JPS55101962A - Method and apparatus for electrophotography - Google Patents

Method and apparatus for electrophotography

Info

Publication number
JPS55101962A
JPS55101962A JP1017879A JP1017879A JPS55101962A JP S55101962 A JPS55101962 A JP S55101962A JP 1017879 A JP1017879 A JP 1017879A JP 1017879 A JP1017879 A JP 1017879A JP S55101962 A JPS55101962 A JP S55101962A
Authority
JP
Japan
Prior art keywords
photoreceptor
toner
polarity
corona discharge
layer
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.)
Granted
Application number
JP1017879A
Other languages
Japanese (ja)
Other versions
JPS6259305B2 (en
Inventor
Michio Ito
Nobuo Kitajima
Masanao Kasai
Shunichi Ishihara
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 JP1017879A priority Critical patent/JPS55101962A/en
Priority to US06/031,592 priority patent/US4286032A/en
Priority to DE19792917005 priority patent/DE2917005A1/en
Publication of JPS55101962A publication Critical patent/JPS55101962A/en
Priority to US06/520,580 priority patent/US4551003A/en
Publication of JPS6259305B2 publication Critical patent/JPS6259305B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Or Security For Electrophotography (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

PURPOSE: To form images of excellent contrast repeatedly, by performing a specified process while the developer is carried on the surface of photoreceptor, in the repeated image forming method using a photoreceptor consisting of conductive layer, photoconductive layer and insulation layer.
CONSTITUTION: A photoreceptor A consisting of conductive layer a1, photoconductive layer a2 (e.g. n-type), and insulation layer a3 is positively charged by corona discharge (figure a), and the image is exposed and a negative voltage is applied by corona discharge at the same time (figure b), then it is fully exposed (figure c), and developed with toner T of the charge in the same polarity as the dark part D (positive polarity) (figure d). By exposing the photoreceptor carrying the toner T, a photo history is given to the photoconductive layer (which becomes low resistance, and the low resistance state is maintained for a while) (figure e). Next, by applying a corona discharge in the reverse polarity of the toner (negarive polarity) form the back of the transfer member P, the developed image is transferred on the transfer member P (figure f).
COPYRIGHT: (C)1980,JPO&Japio
JP1017879A 1978-04-27 1979-01-31 Method and apparatus for electrophotography Granted JPS55101962A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1017879A JPS55101962A (en) 1979-01-31 1979-01-31 Method and apparatus for electrophotography
US06/031,592 US4286032A (en) 1978-04-27 1979-04-19 Electrophotographic process and apparatus therefor
DE19792917005 DE2917005A1 (en) 1978-04-27 1979-04-26 METHOD AND DEVICE FOR ELECTROPHOTOGRAPHY
US06/520,580 US4551003A (en) 1978-04-27 1983-08-05 Electrophotographic process and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1017879A JPS55101962A (en) 1979-01-31 1979-01-31 Method and apparatus for electrophotography

Publications (2)

Publication Number Publication Date
JPS55101962A true JPS55101962A (en) 1980-08-04
JPS6259305B2 JPS6259305B2 (en) 1987-12-10

Family

ID=11743023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1017879A Granted JPS55101962A (en) 1978-04-27 1979-01-31 Method and apparatus for electrophotography

Country Status (1)

Country Link
JP (1) JPS55101962A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62156675A (en) * 1985-12-27 1987-07-11 Mita Ind Co Ltd Electrophotographic copying method using memory photosensitive body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62156675A (en) * 1985-12-27 1987-07-11 Mita Ind Co Ltd Electrophotographic copying method using memory photosensitive body

Also Published As

Publication number Publication date
JPS6259305B2 (en) 1987-12-10

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