JPS5557864A - Developing method of electrophotography - Google Patents

Developing method of electrophotography

Info

Publication number
JPS5557864A
JPS5557864A JP12944378A JP12944378A JPS5557864A JP S5557864 A JPS5557864 A JP S5557864A JP 12944378 A JP12944378 A JP 12944378A JP 12944378 A JP12944378 A JP 12944378A JP S5557864 A JPS5557864 A JP S5557864A
Authority
JP
Japan
Prior art keywords
development
carrier
chromatic color
black
region
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
JP12944378A
Other languages
Japanese (ja)
Inventor
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 JP12944378A priority Critical patent/JPS5557864A/en
Publication of JPS5557864A publication Critical patent/JPS5557864A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain good two color images by using conductive carrier for the carrier of the first chromatic color developer and making the potentials after the development of the regions of the photoreceptor corresponding to the first chromatic color less than the development start voltage. CONSTITUTION:Arrangement is so made that the residual potentials of the region a' corresponding to the first chromatic color, e.g., black, become less than the development start voltage V' after the first development. Because of this, conductive carrier is used for the carrier of the first chromatic color developer, i.e., black color developer, by which the latent image potential leakage from the carrier is increased at the first developing to reduce the residual potentials. As a result, at the time of the second development, the red toner of the second chromatic color deposits only on the region b' corresponding to red and does not depost in the region a' corresponding to black at the second developing. In this way, the good two color images may be obtained.
JP12944378A 1978-10-23 1978-10-23 Developing method of electrophotography Pending JPS5557864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12944378A JPS5557864A (en) 1978-10-23 1978-10-23 Developing method of electrophotography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12944378A JPS5557864A (en) 1978-10-23 1978-10-23 Developing method of electrophotography

Publications (1)

Publication Number Publication Date
JPS5557864A true JPS5557864A (en) 1980-04-30

Family

ID=15009585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12944378A Pending JPS5557864A (en) 1978-10-23 1978-10-23 Developing method of electrophotography

Country Status (1)

Country Link
JP (1) JPS5557864A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720744A (en) * 1980-07-15 1982-02-03 Hitachi Ltd Method for dichromic electrophotography
JPS57188061A (en) * 1981-05-15 1982-11-18 Hitachi Ltd Electrophotographing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720744A (en) * 1980-07-15 1982-02-03 Hitachi Ltd Method for dichromic electrophotography
JPS6354184B2 (en) * 1980-07-15 1988-10-27 Hitachi Ltd
JPS57188061A (en) * 1981-05-15 1982-11-18 Hitachi Ltd Electrophotographing device
JPS6356542B2 (en) * 1981-05-15 1988-11-08 Hitachi Ltd

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