JPS5555371A - Magnetic brush developing unit - Google Patents

Magnetic brush developing unit

Info

Publication number
JPS5555371A
JPS5555371A JP12917778A JP12917778A JPS5555371A JP S5555371 A JPS5555371 A JP S5555371A JP 12917778 A JP12917778 A JP 12917778A JP 12917778 A JP12917778 A JP 12917778A JP S5555371 A JPS5555371 A JP S5555371A
Authority
JP
Japan
Prior art keywords
developing
rollers
feed
rotation
developing unit
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
JP12917778A
Other languages
Japanese (ja)
Other versions
JPS631582B2 (en
Inventor
Toshio Nakahara
Nobuo Kasahara
Hidetoshi Yano
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 JP12917778A priority Critical patent/JPS5555371A/en
Priority to US06/085,490 priority patent/US4267201A/en
Priority to DE2953948A priority patent/DE2953948C2/en
Priority to DE2942415A priority patent/DE2942415C2/en
Publication of JPS5555371A publication Critical patent/JPS5555371A/en
Publication of JPS631582B2 publication Critical patent/JPS631582B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To certainly carry out developer feed and its stop in a simple mechanism, by stopping rotation of feed rollers in shifting developing to nondeveloping, and after a little while, stopping rotation of developing rollers.
CONSTITUTION: Developer 68 stirred with agitating member 62 and agitator 63 in the lower part of developing vessel 61 is carried upward with feed rollers 64, 65, transferred to second and first developing rollers 66, 67, and comes in contact with a latent image on a photoreceptor between both the rollers to develop the image. In shifting developing to nondeveloping in this developing unit, rotation of member 62, agitator 63, and each feed roller 64, 65 is first stopped, and a little while later, rotation of each developing roller 66, 67 is stopped. Such structure permits developer feed and its stop to be certainly carried out in a simple machanism.
COPYRIGHT: (C)1980,JPO&Japio
JP12917778A 1978-10-20 1978-10-20 Magnetic brush developing unit Granted JPS5555371A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12917778A JPS5555371A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit
US06/085,490 US4267201A (en) 1978-10-20 1979-10-17 Magnetic brush development apparatus and method
DE2953948A DE2953948C2 (en) 1978-10-20 1979-10-19 Developing device for an electrophotographic copier
DE2942415A DE2942415C2 (en) 1978-10-20 1979-10-19 Developing device for a color electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12917778A JPS5555371A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Publications (2)

Publication Number Publication Date
JPS5555371A true JPS5555371A (en) 1980-04-23
JPS631582B2 JPS631582B2 (en) 1988-01-13

Family

ID=15003038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12917778A Granted JPS5555371A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Country Status (1)

Country Link
JP (1) JPS5555371A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60122960A (en) * 1983-12-07 1985-07-01 Ricoh Co Ltd Multicolor developing method
JPS61208062A (en) * 1985-03-11 1986-09-16 Konishiroku Photo Ind Co Ltd Multicolor image forming device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093438A (en) * 1973-12-19 1975-07-25
JPS50151530A (en) * 1974-05-28 1975-12-05
JPS5160251U (en) * 1974-11-05 1976-05-12
JPS51115037U (en) * 1975-03-13 1976-09-18
JPS5348534A (en) * 1976-10-14 1978-05-02 Fujitsu Ltd Developing device of electrostatic recorder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093438A (en) * 1973-12-19 1975-07-25
JPS50151530A (en) * 1974-05-28 1975-12-05
JPS5160251U (en) * 1974-11-05 1976-05-12
JPS51115037U (en) * 1975-03-13 1976-09-18
JPS5348534A (en) * 1976-10-14 1978-05-02 Fujitsu Ltd Developing device of electrostatic recorder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60122960A (en) * 1983-12-07 1985-07-01 Ricoh Co Ltd Multicolor developing method
JPS61208062A (en) * 1985-03-11 1986-09-16 Konishiroku Photo Ind Co Ltd Multicolor image forming device

Also Published As

Publication number Publication date
JPS631582B2 (en) 1988-01-13

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