JPS5612657A - Electrophotographic method and its apparatus - Google Patents

Electrophotographic method and its apparatus

Info

Publication number
JPS5612657A
JPS5612657A JP8893979A JP8893979A JPS5612657A JP S5612657 A JPS5612657 A JP S5612657A JP 8893979 A JP8893979 A JP 8893979A JP 8893979 A JP8893979 A JP 8893979A JP S5612657 A JPS5612657 A JP S5612657A
Authority
JP
Japan
Prior art keywords
image
forming element
image forming
red
latent
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
JP8893979A
Other languages
Japanese (ja)
Other versions
JPS6251467B2 (en
Inventor
Kazuo Aramaki
Fuyuhiko Matsumoto
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 JP8893979A priority Critical patent/JPS5612657A/en
Publication of JPS5612657A publication Critical patent/JPS5612657A/en
Publication of JPS6251467B2 publication Critical patent/JPS6251467B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable one of latent images to be erased and an optional image to be reproduced, by exposing part of a photoconductive layer with 2 latent images reverse in polarity to each other fromed and both charges distributed, using the color light to which only said part is sensitive.
CONSTITUTION: Two-color copying process is conducted by turning off blue lamp 26 arranged on the right side of image forming element 25. Photosensitive belt 12 is stopped, optical system 20 is moved to left, a two-color original placed on original platen 18 is illuminated with white light source 22 through red filter 21, at the same time belt 12 is successively subjected to positive primary charging with primary charger 23, and negative secondary charging with secondary charger 24, and image- wise exposure with exposing lamps 27, 28 and image forming element 25 to form a positive latent image corresponding to the red part, and a negative latent image corresponding to the black part. In order to form an image with the red image erased, blue lamp 26 arranged on the right side of image forming element 25 is turned on and similar processing is conducted.
COPYRIGHT: (C)1981,JPO&Japio
JP8893979A 1979-07-13 1979-07-13 Electrophotographic method and its apparatus Granted JPS5612657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8893979A JPS5612657A (en) 1979-07-13 1979-07-13 Electrophotographic method and its apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8893979A JPS5612657A (en) 1979-07-13 1979-07-13 Electrophotographic method and its apparatus

Publications (2)

Publication Number Publication Date
JPS5612657A true JPS5612657A (en) 1981-02-07
JPS6251467B2 JPS6251467B2 (en) 1987-10-30

Family

ID=13956846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8893979A Granted JPS5612657A (en) 1979-07-13 1979-07-13 Electrophotographic method and its apparatus

Country Status (1)

Country Link
JP (1) JPS5612657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167066A (en) * 1984-09-10 1986-04-07 Matsushita Electric Ind Co Ltd Copying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167066A (en) * 1984-09-10 1986-04-07 Matsushita Electric Ind Co Ltd Copying machine

Also Published As

Publication number Publication date
JPS6251467B2 (en) 1987-10-30

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