JPS547337A - Two-color copying method - Google Patents

Two-color copying method

Info

Publication number
JPS547337A
JPS547337A JP7216277A JP7216277A JPS547337A JP S547337 A JPS547337 A JP S547337A JP 7216277 A JP7216277 A JP 7216277A JP 7216277 A JP7216277 A JP 7216277A JP S547337 A JPS547337 A JP S547337A
Authority
JP
Japan
Prior art keywords
positive
color copying
copying method
color
negative
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
JP7216277A
Other languages
Japanese (ja)
Inventor
Koji Sakamoto
Seiichi Miyagawa
Susumu Tatsumi
Yoshihiro Ogata
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 JP7216277A priority Critical patent/JPS547337A/en
Publication of JPS547337A publication Critical patent/JPS547337A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To form a 2-color image in a short copying time by one development using 2color toners different from each other in charging polarity, by employing a photoreceptor having a photoconductive layer with positive and negative charging characteristics equal to each other, and by forming a 2-color latent image consisting of positive and negative voltage static images.
COPYRIGHT: (C)1979,JPO&Japio
JP7216277A 1977-06-20 1977-06-20 Two-color copying method Pending JPS547337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7216277A JPS547337A (en) 1977-06-20 1977-06-20 Two-color copying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7216277A JPS547337A (en) 1977-06-20 1977-06-20 Two-color copying method

Publications (1)

Publication Number Publication Date
JPS547337A true JPS547337A (en) 1979-01-20

Family

ID=13481268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7216277A Pending JPS547337A (en) 1977-06-20 1977-06-20 Two-color copying method

Country Status (1)

Country Link
JP (1) JPS547337A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860657U (en) * 1981-10-16 1983-04-23 株式会社神戸製鋼所 dancer roller device
US5006868A (en) * 1989-11-28 1991-04-09 Kentek Information Systems, Inc. Method and apparatus for printing two or more colors using an electrophotographic process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860657U (en) * 1981-10-16 1983-04-23 株式会社神戸製鋼所 dancer roller device
US5006868A (en) * 1989-11-28 1991-04-09 Kentek Information Systems, Inc. Method and apparatus for printing two or more colors using an electrophotographic process

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