JPS5555370A - Magnetic brush developing unit - Google Patents

Magnetic brush developing unit

Info

Publication number
JPS5555370A
JPS5555370A JP12917678A JP12917678A JPS5555370A JP S5555370 A JPS5555370 A JP S5555370A JP 12917678 A JP12917678 A JP 12917678A JP 12917678 A JP12917678 A JP 12917678A JP S5555370 A JPS5555370 A JP S5555370A
Authority
JP
Japan
Prior art keywords
developing
rollers
developer
feed
nondeveloping
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
JP12917678A
Other languages
Japanese (ja)
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 JP12917678A priority Critical patent/JPS5555370A/en
Priority to US06/085,490 priority patent/US4267201A/en
Priority to DE2942415A priority patent/DE2942415C2/en
Priority to DE2953948A priority patent/DE2953948C2/en
Publication of JPS5555370A publication Critical patent/JPS5555370A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To carry out in a simple and certain manner switchover action of supply and nonsupply of developer to developing rollers, by stopping rotation of feed rollers in nondeveloping to stop developer feed to the 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 67, 66, and comes in contact with a latent image on a photorecepter between both rollers 66, 67 to develop the image. After the main switch of a copying machine is turned on, two developing rollers 66, 67 keep on rotating irrespective of developing or nondeveloping in this developing unit, while member 62, agitator 63, and each feed roller 64, 65 stop rotation in nondeveloping, thus permitting switchover action of supply or nonsupply of the developer to be carried out certainly in a simple manner.
COPYRIGHT: (C)1980,JPO&Japio
JP12917678A 1978-10-20 1978-10-20 Magnetic brush developing unit Pending JPS5555370A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12917678A JPS5555370A (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
DE2942415A DE2942415C2 (en) 1978-10-20 1979-10-19 Developing device for a color electrophotographic copier
DE2953948A DE2953948C2 (en) 1978-10-20 1979-10-19 Developing device for an electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12917678A JPS5555370A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Publications (1)

Publication Number Publication Date
JPS5555370A true JPS5555370A (en) 1980-04-23

Family

ID=15003014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12917678A Pending JPS5555370A (en) 1978-10-20 1978-10-20 Magnetic brush developing unit

Country Status (1)

Country Link
JP (1) JPS5555370A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58205173A (en) * 1982-05-25 1983-11-30 Ricoh Co Ltd Magnetic brush developing device
JPS60122960A (en) * 1983-12-07 1985-07-01 Ricoh Co Ltd Multicolor developing method
JPS60239783A (en) * 1984-05-15 1985-11-28 Fuji Xerox Co Ltd Magnetic developing method of electronic copying machine
JPS6126064A (en) * 1984-07-17 1986-02-05 Konishiroku Photo Ind Co Ltd Image forming device
JPS62112181A (en) * 1985-11-12 1987-05-23 Ricoh Co Ltd Developing device
JPS63167388A (en) * 1986-12-22 1988-07-11 イーストマン・コダック・カンパニー Magnetic brush developing apparatus
US10042288B2 (en) * 2004-11-26 2018-08-07 Ricoh Company, Ltd. Image forming apparatus capable of effectively developing images

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348534A (en) * 1976-10-14 1978-05-02 Fujitsu Ltd Developing device of electrostatic recorder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348534A (en) * 1976-10-14 1978-05-02 Fujitsu Ltd Developing device of electrostatic recorder

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58205173A (en) * 1982-05-25 1983-11-30 Ricoh Co Ltd Magnetic brush developing device
JPH0370225B2 (en) * 1982-05-25 1991-11-06 Ricoh Kk
JPS60122960A (en) * 1983-12-07 1985-07-01 Ricoh Co Ltd Multicolor developing method
JPS60239783A (en) * 1984-05-15 1985-11-28 Fuji Xerox Co Ltd Magnetic developing method of electronic copying machine
JPH0546945B2 (en) * 1984-05-15 1993-07-15 Fuji Xerox Co Ltd
JPS6126064A (en) * 1984-07-17 1986-02-05 Konishiroku Photo Ind Co Ltd Image forming device
JPH0464064B2 (en) * 1984-07-17 1992-10-13 Konishiroku Photo Ind
JPS62112181A (en) * 1985-11-12 1987-05-23 Ricoh Co Ltd Developing device
JPS63167388A (en) * 1986-12-22 1988-07-11 イーストマン・コダック・カンパニー Magnetic brush developing apparatus
US10042288B2 (en) * 2004-11-26 2018-08-07 Ricoh Company, Ltd. Image forming apparatus capable of effectively developing images

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