JPS5770545A - Two-color electrophotographic method - Google Patents

Two-color electrophotographic method

Info

Publication number
JPS5770545A
JPS5770545A JP55146602A JP14660280A JPS5770545A JP S5770545 A JPS5770545 A JP S5770545A JP 55146602 A JP55146602 A JP 55146602A JP 14660280 A JP14660280 A JP 14660280A JP S5770545 A JPS5770545 A JP S5770545A
Authority
JP
Japan
Prior art keywords
toner
red
black
drum
fed
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
JP55146602A
Other languages
Japanese (ja)
Inventor
Masatoshi Saito
Wasaburo Oota
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 JP55146602A priority Critical patent/JPS5770545A/en
Publication of JPS5770545A publication Critical patent/JPS5770545A/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
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies

Abstract

PURPOSE:To enable combination of 2 colors without using a full-color copying machine in order to enhance general use adaptability, by selecting 2 optional developing devices from >=3 ones having toners different in color from one another to use them for copying. CONSTITUTION:A device for primary charging and simultaneous exposing 5, a secondary charger 6, primary, secondary, tertiary, quaternary developing devices 7, 8, 9, 10, a polarity-controlling charger 11, etc. are arranged anticlockwise around a photosensitive drum 1. When a positively charged red toner is fed to the drum 1 surface from the device 8, and a negatively charged black toner is supplied to the drum 1 surface from the device 10, a red and black image corresponding to an original is reproduced, and when a positively charged yellow toner is fed from the device 7, and a negatively charged toner is supplied from the device 9, the reproduced image has a yellow and blue image changed from the red and the black of the original, respectively.
JP55146602A 1980-10-20 1980-10-20 Two-color electrophotographic method Pending JPS5770545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55146602A JPS5770545A (en) 1980-10-20 1980-10-20 Two-color electrophotographic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146602A JPS5770545A (en) 1980-10-20 1980-10-20 Two-color electrophotographic method

Publications (1)

Publication Number Publication Date
JPS5770545A true JPS5770545A (en) 1982-05-01

Family

ID=15411429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146602A Pending JPS5770545A (en) 1980-10-20 1980-10-20 Two-color electrophotographic method

Country Status (1)

Country Link
JP (1) JPS5770545A (en)

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