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JPS5412739A - Two color electrophotographic copying method - Google Patents

Two color electrophotographic copying method

Info

Publication number
JPS5412739A
JPS5412739A JP7765877A JP7765877A JPS5412739A JP S5412739 A JPS5412739 A JP S5412739A JP 7765877 A JP7765877 A JP 7765877A JP 7765877 A JP7765877 A JP 7765877A JP S5412739 A JPS5412739 A JP S5412739A
Authority
JP
Japan
Prior art keywords
electrophotographic copying
color electrophotographic
color
copying method
polarity opposite
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
JP7765877A
Other languages
Japanese (ja)
Other versions
JPS6023348B2 (en
Inventor
Toshio Sakai
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 JP52077658A priority Critical patent/JPS6023348B2/en
Priority to US05/912,273 priority patent/US4250239A/en
Priority to DE2825385A priority patent/DE2825385C3/en
Publication of JPS5412739A publication Critical patent/JPS5412739A/en
Priority to DE19822857807 priority patent/DE2857807C2/en
Publication of JPS6023348B2 publication Critical patent/JPS6023348B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable a good 2-color copy free of color mixing with a simple device, by developing static latent images of polarity opposite to each other formed on a photosensitive layer made of laminated 2 kinds of photoconductive layers in accordance with colors, with 2-color mixed toners charged to polarity opposite to each other.
COPYRIGHT: (C)1979,JPO&Japio
JP52077658A 1977-06-09 1977-06-29 Two-color electrophotographic copying method Expired JPS6023348B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP52077658A JPS6023348B2 (en) 1977-06-29 1977-06-29 Two-color electrophotographic copying method
US05/912,273 US4250239A (en) 1977-06-09 1978-06-05 Color electrostatographic process and material
DE2825385A DE2825385C3 (en) 1977-06-09 1978-06-09 Electrophotographic process for making two-color records
DE19822857807 DE2857807C2 (en) 1977-06-09 1982-07-08 Electrophotographic process for making two-color records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52077658A JPS6023348B2 (en) 1977-06-29 1977-06-29 Two-color electrophotographic copying method

Publications (2)

Publication Number Publication Date
JPS5412739A true JPS5412739A (en) 1979-01-30
JPS6023348B2 JPS6023348B2 (en) 1985-06-07

Family

ID=13639970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52077658A Expired JPS6023348B2 (en) 1977-06-09 1977-06-29 Two-color electrophotographic copying method

Country Status (1)

Country Link
JP (1) JPS6023348B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622443A (en) * 1979-07-31 1981-03-03 Ricoh Co Ltd Latent image forming method
JPS63248530A (en) * 1987-04-01 1988-10-14 Nippon Concrete Ind Co Ltd Method and apparatus for manufacturing reinforcing steel cage for concrete pole
US5078574A (en) * 1990-11-19 1992-01-07 Olsen George D Device for minimizing room temperature gradients

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239558A (en) * 1984-05-10 1985-11-28 グンゼ株式会社 Method and apparatus for relax treatment of cloth

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622443A (en) * 1979-07-31 1981-03-03 Ricoh Co Ltd Latent image forming method
JPS6337378B2 (en) * 1979-07-31 1988-07-25 Ricoh Kk
JPS63248530A (en) * 1987-04-01 1988-10-14 Nippon Concrete Ind Co Ltd Method and apparatus for manufacturing reinforcing steel cage for concrete pole
JPH046461B2 (en) * 1987-04-01 1992-02-05 Nippon Concrete Ind Co Ltd
US5078574A (en) * 1990-11-19 1992-01-07 Olsen George D Device for minimizing room temperature gradients

Also Published As

Publication number Publication date
JPS6023348B2 (en) 1985-06-07

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