JPS5616163A - Magnetic brush developing unit - Google Patents
Magnetic brush developing unitInfo
- Publication number
- JPS5616163A JPS5616163A JP9128079A JP9128079A JPS5616163A JP S5616163 A JPS5616163 A JP S5616163A JP 9128079 A JP9128079 A JP 9128079A JP 9128079 A JP9128079 A JP 9128079A JP S5616163 A JPS5616163 A JP S5616163A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- developer
- permanent magnet
- magnetic brush
- unmovable
- 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
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE: To prevent the ground soiling of picture, by providing an electromagnet, whose polarity is inverted in the developing position of the unmovable material holding a permanent magnet and by arranging many magnetic poles of the electromagnet so that they may be different in polarity in the axis direction and the circumference direction of the unmovable material.
CONSTITUTION: Developer carrying permanent magnet 2 is buried on the circumference of fixed magnet holder 1 consisting of nonmagnetic materials and is so arranged that polarities may be opposite to each other. The developer consisting of magnetic carriers and toner which are sucked by permanent magnet 2 and are put on sleeve 4 receives magnetic field action while the developer is carried near photosensitive material 10, and the developer becomes infinite magnetic dipoles to form orderly crests of a magnetic brush along the magnetic force line on sleeve 4. When the developer moves to the developing position under this state, the magnetic brush becomes a soft magnetic brush due to action of alternating magnetic fields of magnetic poles 33a, 33b, 35a and 35b to develop the toner. As a result, high- efficient development is possible where the texture of the picture can be prevented from being soiled.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9128079A JPS5616163A (en) | 1979-07-17 | 1979-07-17 | Magnetic brush developing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9128079A JPS5616163A (en) | 1979-07-17 | 1979-07-17 | Magnetic brush developing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5616163A true JPS5616163A (en) | 1981-02-16 |
Family
ID=14022041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9128079A Pending JPS5616163A (en) | 1979-07-17 | 1979-07-17 | Magnetic brush developing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5616163A (en) |
-
1979
- 1979-07-17 JP JP9128079A patent/JPS5616163A/en active Pending
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