JPS568165A - Electrostatic recording apparatus - Google Patents

Electrostatic recording apparatus

Info

Publication number
JPS568165A
JPS568165A JP8264379A JP8264379A JPS568165A JP S568165 A JPS568165 A JP S568165A JP 8264379 A JP8264379 A JP 8264379A JP 8264379 A JP8264379 A JP 8264379A JP S568165 A JPS568165 A JP S568165A
Authority
JP
Japan
Prior art keywords
magnetic toner
developer
component
layer
recording medium
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
JP8264379A
Other languages
Japanese (ja)
Inventor
Nobuyoshi Hoshi
Masayasu Anzai
Susumu Akimaru
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8264379A priority Critical patent/JPS568165A/en
Publication of JPS568165A publication Critical patent/JPS568165A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To achieve the improvement in the sharpness of recording images of two colors by providing a roller applied with the charge of the polarity opposite from that of a two-component type developer on its surface near the surface of a sleeve and removing the two component type developer mixed from a magnetic power layer.
CONSTITUTION: Developing parts 6, 12 which respectively develop the electrostatic latent images formed on a recording medium 1 by a two-component developer 7 and a magnetic toner 13 of a color differing from this are provided. At the time when a magnetic toner layer 22 contacts the surface of the recording medium 1 in the developing part 12, apart of the two-component developer 7 stuck on the recording medium 1 comes off and mixes into the magnetic toner layer 22. A roller 23 applied with the charge of the polarity opposite from that of the two component type developer 7 on its surface is provided in proximity to the lower side of a sleeve 19 in order to remove the two component developer 7a having entered the magnetic toner layer 22 from said layer. The two component developer 7 and the magnetic toner 13 separated in this way are recovered and are again used for development, thus the sharp two-color imges may be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP8264379A 1979-07-02 1979-07-02 Electrostatic recording apparatus Pending JPS568165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8264379A JPS568165A (en) 1979-07-02 1979-07-02 Electrostatic recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8264379A JPS568165A (en) 1979-07-02 1979-07-02 Electrostatic recording apparatus

Publications (1)

Publication Number Publication Date
JPS568165A true JPS568165A (en) 1981-01-27

Family

ID=13780100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8264379A Pending JPS568165A (en) 1979-07-02 1979-07-02 Electrostatic recording apparatus

Country Status (1)

Country Link
JP (1) JPS568165A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816269A (en) * 1981-07-22 1983-01-29 Fuji Xerox Co Ltd Developing device of electronic copying machine
JPS58105173A (en) * 1981-12-17 1983-06-22 Fujitsu Ltd Two-color recorder
JPS5930147U (en) * 1982-08-18 1984-02-24 株式会社リコー Two-color electrophotographic device
JPH01129265A (en) * 1987-11-13 1989-05-22 Canon Inc Image forming device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104834A (en) * 1978-02-06 1979-08-17 Ricoh Co Ltd Two-color image reproducing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104834A (en) * 1978-02-06 1979-08-17 Ricoh Co Ltd Two-color image reproducing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816269A (en) * 1981-07-22 1983-01-29 Fuji Xerox Co Ltd Developing device of electronic copying machine
JPH0526194B2 (en) * 1981-07-22 1993-04-15 Fuji Xerox Co Ltd
JPS58105173A (en) * 1981-12-17 1983-06-22 Fujitsu Ltd Two-color recorder
JPH0234390B2 (en) * 1981-12-17 1990-08-02 Fujitsu Ltd
JPS5930147U (en) * 1982-08-18 1984-02-24 株式会社リコー Two-color electrophotographic device
JPH01129265A (en) * 1987-11-13 1989-05-22 Canon Inc Image forming device

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