JPS55113073A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS55113073A
JPS55113073A JP2167779A JP2167779A JPS55113073A JP S55113073 A JPS55113073 A JP S55113073A JP 2167779 A JP2167779 A JP 2167779A JP 2167779 A JP2167779 A JP 2167779A JP S55113073 A JPS55113073 A JP S55113073A
Authority
JP
Japan
Prior art keywords
magnetic
roll
rotated
constituted
cylindrical magnet
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
JP2167779A
Other languages
Japanese (ja)
Other versions
JPS5929869B2 (en
Inventor
Yoshio Shoji
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP2167779A priority Critical patent/JPS5929869B2/en
Publication of JPS55113073A publication Critical patent/JPS55113073A/en
Publication of JPS5929869B2 publication Critical patent/JPS5929869B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To prevent intricating of the device and achieve its miniaturization by disposing the 1st magnetic roll which is rotated by a drive system and the 2nd magnetic roll which is rotated by the attraction force of the 1st roll in parallel therewith. CONSTITUTION:Two magnetic rolls are disposed in the position opposing to a photosensitive drum 1 having electrostatic latent images. More specifically, the device is constituted by the 1st magnetic roll constituted by a cylindrical magnet 2 which is connected at one end of its shaft by a drive system 7 and symmetrically magnetized with 8 poles and a non-magnetic sleeve 3 completely covering this magnet, the 2nd magnetic roll constituted by a cylindrical magnet 12 which is rotated in the opposite direction by the magnetic attraction force of this rotating cylindrical magnet 2 and symmetrically magnetized with 8 poles and a non-magnetic sleeve 13 covering this, a hopper 8 containing magnetic developer and the two defining blades for controlling the amount of the developer depositing on the both rolls. Thereby, the developing time and developing times may be increased and the device made to cope with higher speeds.
JP2167779A 1979-02-26 1979-02-26 magnetic brush developing device Expired JPS5929869B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2167779A JPS5929869B2 (en) 1979-02-26 1979-02-26 magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2167779A JPS5929869B2 (en) 1979-02-26 1979-02-26 magnetic brush developing device

Publications (2)

Publication Number Publication Date
JPS55113073A true JPS55113073A (en) 1980-09-01
JPS5929869B2 JPS5929869B2 (en) 1984-07-24

Family

ID=12061680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2167779A Expired JPS5929869B2 (en) 1979-02-26 1979-02-26 magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS5929869B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134654A (en) * 1982-02-05 1983-08-10 Minolta Camera Co Ltd Developing method of electrostatic latent image
JPS58142357A (en) * 1982-02-17 1983-08-24 Toshiba Corp Developing device
US4994863A (en) * 1989-12-18 1991-02-19 Eastman Kodak Company Electrostatic scavenger having magnetic drive disk
US5065192A (en) * 1989-10-31 1991-11-12 Eastman Kodak Company Development apparatus with magnetically rotated skive
US6240270B1 (en) * 1999-03-19 2001-05-29 Hitachi Koki Co., Ltd. Color image forming method and device using potential division development
JP2011059417A (en) * 2009-09-10 2011-03-24 Ricoh Co Ltd Developing device and image forming apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62198272A (en) * 1986-02-26 1987-09-01 Central Res Inst Of Electric Power Ind Borehole television camera equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134654A (en) * 1982-02-05 1983-08-10 Minolta Camera Co Ltd Developing method of electrostatic latent image
JPS58142357A (en) * 1982-02-17 1983-08-24 Toshiba Corp Developing device
US5065192A (en) * 1989-10-31 1991-11-12 Eastman Kodak Company Development apparatus with magnetically rotated skive
US4994863A (en) * 1989-12-18 1991-02-19 Eastman Kodak Company Electrostatic scavenger having magnetic drive disk
US6240270B1 (en) * 1999-03-19 2001-05-29 Hitachi Koki Co., Ltd. Color image forming method and device using potential division development
JP2011059417A (en) * 2009-09-10 2011-03-24 Ricoh Co Ltd Developing device and image forming apparatus

Also Published As

Publication number Publication date
JPS5929869B2 (en) 1984-07-24

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