JPS547338A - Two-color electrophotographic copying method - Google Patents

Two-color electrophotographic copying method

Info

Publication number
JPS547338A
JPS547338A JP7295377A JP7295377A JPS547338A JP S547338 A JPS547338 A JP S547338A JP 7295377 A JP7295377 A JP 7295377A JP 7295377 A JP7295377 A JP 7295377A JP S547338 A JPS547338 A JP S547338A
Authority
JP
Japan
Prior art keywords
copying method
electrophotographic copying
color electrophotographic
color
reverse polarities
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
JP7295377A
Other languages
Japanese (ja)
Inventor
Ryuzo Suzuki
Seiichi Miyagawa
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 JP7295377A priority Critical patent/JPS547338A/en
Publication of JPS547338A publication Critical patent/JPS547338A/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
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0495—Plural charge levels of latent image produced, e.g. trilevel

Abstract

PURPOSE: To carry out the two-color copying method in a simple step by making the surface potential of a photoreceptor corresponding to two-color remain with charging of two times, forming an electrostatic latent image whose mutual surface potentials are reverse polarities, and make it a visible image with two kinds of toners of different colors charged with reverse polarities each other.
COPYRIGHT: (C)1979,JPO&Japio
JP7295377A 1977-06-20 1977-06-20 Two-color electrophotographic copying method Pending JPS547338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7295377A JPS547338A (en) 1977-06-20 1977-06-20 Two-color electrophotographic copying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7295377A JPS547338A (en) 1977-06-20 1977-06-20 Two-color electrophotographic copying method

Publications (1)

Publication Number Publication Date
JPS547338A true JPS547338A (en) 1979-01-20

Family

ID=13504251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7295377A Pending JPS547338A (en) 1977-06-20 1977-06-20 Two-color electrophotographic copying method

Country Status (1)

Country Link
JP (1) JPS547338A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060621A2 (en) * 1981-02-25 1982-09-22 Rank Xerox Limited Electrophotographic printing
EP0130787A2 (en) * 1983-06-30 1985-01-09 Mita Industrial Co. Ltd. An electrophotographic method for the formation of two-colored images
JPS60181762A (en) * 1984-02-29 1985-09-17 Casio Comput Co Ltd Two-color image forming device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060621A2 (en) * 1981-02-25 1982-09-22 Rank Xerox Limited Electrophotographic printing
EP0060621A3 (en) * 1981-02-25 1982-10-27 Rank Xerox Limited Electrophotographic printing
EP0130787A2 (en) * 1983-06-30 1985-01-09 Mita Industrial Co. Ltd. An electrophotographic method for the formation of two-colored images
JPS60181762A (en) * 1984-02-29 1985-09-17 Casio Comput Co Ltd Two-color image forming device

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