JPS55113073A - Magnetic brush developing device - Google Patents
Magnetic brush developing deviceInfo
- 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
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.
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)
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)
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 |
-
1979
- 1979-02-26 JP JP2167779A patent/JPS5929869B2/en not_active Expired
Cited By (6)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4030447A (en) | Developing device | |
JPS55113073A (en) | Magnetic brush developing device | |
GB2001556A (en) | Magnetic brush developing apparatus | |
JPS55149962A (en) | Magnetic brush type developing device | |
JPS56137360A (en) | Developing method | |
JPS5730859A (en) | Magnetic brush developing device | |
JPS55157768A (en) | Magnetic latent image developing device | |
JPS55138768A (en) | Developing device for magnetic toner | |
JPS56137380A (en) | Copying method | |
JPS55113072A (en) | Electrophotographic copier | |
JPS55100575A (en) | Magnetic brush developing roll | |
JPS6017470A (en) | Developing device | |
JPS576873A (en) | Developing method for electrostatic latent image | |
JPS56137372A (en) | Developing device | |
JPS53116161A (en) | Electrophotographic copier for multicolor image | |
JPS5660469A (en) | Developing device | |
JPS5584960A (en) | Magnetic brush developing device | |
JPS5689762A (en) | Developing device of electronic copying machine | |
JPS5526536A (en) | Magnetic brush developing machine | |
JPS57188048A (en) | Method and device for development | |
JPS57207267A (en) | Developing device | |
JPS5921405Y2 (en) | Electrophotographic developing device | |
JPS5691266A (en) | Developing device | |
JPS5770579A (en) | Magnetic cleaning device | |
JPS5647051A (en) | Developing method in multiple sheet copying method |