JPS54124734A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS54124734A
JPS54124734A JP3214778A JP3214778A JPS54124734A JP S54124734 A JPS54124734 A JP S54124734A JP 3214778 A JP3214778 A JP 3214778A JP 3214778 A JP3214778 A JP 3214778A JP S54124734 A JPS54124734 A JP S54124734A
Authority
JP
Japan
Prior art keywords
developing
powder
sleeve
shield plates
magnetic
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
JP3214778A
Other languages
Japanese (ja)
Other versions
JPS6232470B2 (en
Inventor
Nobuo Kasahara
Toshio Nakahara
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 JP3214778A priority Critical patent/JPS54124734A/en
Publication of JPS54124734A publication Critical patent/JPS54124734A/en
Publication of JPS6232470B2 publication Critical patent/JPS6232470B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To surely prevent the mutual mixing of developing powders by disposing a plurality of developing powder containing vessels to a developing sleeve and providing shield plates. CONSTITUTION:A magnetic brush developing device 11 is constituted by a developing sleeve 51, a plurality of developing units 52 thru 54 disposed around the same and shield plates 101, 102, etc. turning about a fulcrum 103. Then, the yellow developing powder in the developing powder containing vessel 60 is attracted on the surface of the supply sleeve by magnetic force, after which it is built up in brush form by the magnet in the developing sleeve 51 and developing is thereby performed, during which time the openings of the magnetic powder developing vessels 70, 80 are shielded by the shield plates 101, 102 and the mutual mixing of the yellow developing powder with the magenta developing powder and cyan developing powder is prevented.
JP3214778A 1978-03-20 1978-03-20 Magnetic brush developing device Granted JPS54124734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3214778A JPS54124734A (en) 1978-03-20 1978-03-20 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3214778A JPS54124734A (en) 1978-03-20 1978-03-20 Magnetic brush developing device

Publications (2)

Publication Number Publication Date
JPS54124734A true JPS54124734A (en) 1979-09-27
JPS6232470B2 JPS6232470B2 (en) 1987-07-15

Family

ID=12350782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3214778A Granted JPS54124734A (en) 1978-03-20 1978-03-20 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS54124734A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021070A (en) * 1983-07-15 1985-02-02 Fuji Xerox Co Ltd Developing device
JPS61129665A (en) * 1984-11-29 1986-06-17 Canon Inc Developing device
JPS61133965A (en) * 1984-12-05 1986-06-21 Canon Inc Developing device for multi-color image forming device
US4754301A (en) * 1985-11-18 1988-06-28 Canon Kabushiki Kaisha Multicolor image forming apparatus with a shutter to prevent mixture of developers in plural developing devices
US7912407B2 (en) 2007-12-28 2011-03-22 Fuji Xerox Co., Ltd. Developing unit, developing device and image forming apparatus for peeling off magnetic developer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021070A (en) * 1983-07-15 1985-02-02 Fuji Xerox Co Ltd Developing device
JPS61129665A (en) * 1984-11-29 1986-06-17 Canon Inc Developing device
JPS61133965A (en) * 1984-12-05 1986-06-21 Canon Inc Developing device for multi-color image forming device
US4754301A (en) * 1985-11-18 1988-06-28 Canon Kabushiki Kaisha Multicolor image forming apparatus with a shutter to prevent mixture of developers in plural developing devices
US7912407B2 (en) 2007-12-28 2011-03-22 Fuji Xerox Co., Ltd. Developing unit, developing device and image forming apparatus for peeling off magnetic developer

Also Published As

Publication number Publication date
JPS6232470B2 (en) 1987-07-15

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