JPS54161944A - Magnetic brush developing device of electrophotography - Google Patents
Magnetic brush developing device of electrophotographyInfo
- Publication number
- JPS54161944A JPS54161944A JP7066678A JP7066678A JPS54161944A JP S54161944 A JPS54161944 A JP S54161944A JP 7066678 A JP7066678 A JP 7066678A JP 7066678 A JP7066678 A JP 7066678A JP S54161944 A JPS54161944 A JP S54161944A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- sleeve
- toner
- poles
- containing vessel
- 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
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE: To obviate the occurrence of cohesive action of magnetic toner near a doctor plate and make bristling-up good at the developing part by making the magnetic force of the magnetic pole of the magnetic field generator positioned in a magnetic toner containing vessel to 1/2 or 1/10 the magnetic forces of the other magnetic poles.
CONSTITUTION: A magnetic field generator 13 having magnetic poles M11 thru M14 is concentrically fixed in a rotatable non-magnetic sleeve 12 which is disposed with part thereof being immersed in a toner containing vessel 11. The magnetic force of the magnetic pole M13 positioned in the containing vessel 11 is made 1/2 to 1/10 of the magnetic forces of the other magnetic poles M11, M12, M14, and therefore when the sleeve 12 is rotated in the arrow A direction, magnetic tone r 14 is delivered out by depositing on the surface of the sleeve 12 but the amount scraped away by a doctor plate 15 is small, hence no cohesive action occurs and the magnetic toner 14 having been discharged deposits on the surface of the sleeve 12 by receiving the magnetic forces of the other magnetic poles M14, M11 and is thereby conveyed, and in the developing part the toner bristles up well under the cooperation of the magnetic pole 11.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7066678A JPS54161944A (en) | 1978-06-12 | 1978-06-12 | Magnetic brush developing device of electrophotography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7066678A JPS54161944A (en) | 1978-06-12 | 1978-06-12 | Magnetic brush developing device of electrophotography |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54161944A true JPS54161944A (en) | 1979-12-22 |
JPS6226465B2 JPS6226465B2 (en) | 1987-06-09 |
Family
ID=13438208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7066678A Granted JPS54161944A (en) | 1978-06-12 | 1978-06-12 | Magnetic brush developing device of electrophotography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161944A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58181072A (en) * | 1982-04-19 | 1983-10-22 | Ricoh Co Ltd | Dry type developing device |
EP0102038A2 (en) * | 1982-08-27 | 1984-03-07 | Kabushiki Kaisha Toshiba | Developing device and developing method |
DE3418804A1 (en) * | 1984-05-19 | 1985-11-21 | Alfred Teves Gmbh, 6000 Frankfurt | PROTECTIVE CUFF FOR CYLINDRICAL PARTS, ESPECIALLY FOR A BOLT GUIDE FOR A PART COVER DISC BRAKE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50110642A (en) * | 1974-02-08 | 1975-08-30 | ||
JPS5210144A (en) * | 1975-07-14 | 1977-01-26 | Ricoh Co Ltd | Magnetic brush development device |
JPS5376039A (en) * | 1976-12-17 | 1978-07-06 | Hitachi Metals Ltd | Magnetic brush developing device |
-
1978
- 1978-06-12 JP JP7066678A patent/JPS54161944A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50110642A (en) * | 1974-02-08 | 1975-08-30 | ||
JPS5210144A (en) * | 1975-07-14 | 1977-01-26 | Ricoh Co Ltd | Magnetic brush development device |
JPS5376039A (en) * | 1976-12-17 | 1978-07-06 | Hitachi Metals Ltd | Magnetic brush developing device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58181072A (en) * | 1982-04-19 | 1983-10-22 | Ricoh Co Ltd | Dry type developing device |
JPH0322993B2 (en) * | 1982-04-19 | 1991-03-28 | Ricoh Kk | |
EP0102038A2 (en) * | 1982-08-27 | 1984-03-07 | Kabushiki Kaisha Toshiba | Developing device and developing method |
DE3418804A1 (en) * | 1984-05-19 | 1985-11-21 | Alfred Teves Gmbh, 6000 Frankfurt | PROTECTIVE CUFF FOR CYLINDRICAL PARTS, ESPECIALLY FOR A BOLT GUIDE FOR A PART COVER DISC BRAKE |
Also Published As
Publication number | Publication date |
---|---|
JPS6226465B2 (en) | 1987-06-09 |
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