JPS55117171A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS55117171A JPS55117171A JP2370179A JP2370179A JPS55117171A JP S55117171 A JPS55117171 A JP S55117171A JP 2370179 A JP2370179 A JP 2370179A JP 2370179 A JP2370179 A JP 2370179A JP S55117171 A JPS55117171 A JP S55117171A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- magnetic
- blade
- sleeve
- repulsive
- 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 enable the cohered toner to be readily removed from the inside of developer with a simple constitution by so controlling the toner thickness by a defining member as to differ at the developing and non-developing.
CONSTITUTION: Magnetic toner 4 being one-component developer is contained in a vessel 3 and the magnet 6 magnetized with plural magnetic poles is fixed in a non- magnetic cylindrical sleeve 5 which is rotating. A doctor blade 7 which defines the toner thickness is provided and the magnetic pole of the same polarity is provided to part of the magnet 6 in proximity so that a repulsive magnetic field is formed. In the process other than development, the distance between the blade 7 and sleeve 5 is expanded by such a means as spring. Then, coarse and large foreign matter enters the toner through the spacing between the blade and sleeve and is conveyed by being disengaged from the blade edge until it reaches the repulsive msgnetic pole part where it receives repulsive force and is recovered into the vessel 8. Thereby, the cohered toner may be readily removed and the sensible images of good quality obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2370179A JPS55117171A (en) | 1979-03-01 | 1979-03-01 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2370179A JPS55117171A (en) | 1979-03-01 | 1979-03-01 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55117171A true JPS55117171A (en) | 1980-09-09 |
JPS64694B2 JPS64694B2 (en) | 1989-01-09 |
Family
ID=12117680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2370179A Granted JPS55117171A (en) | 1979-03-01 | 1979-03-01 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117171A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61230177A (en) * | 1985-04-04 | 1986-10-14 | Minolta Camera Co Ltd | Electrostatic latent image developing device |
JP2013080131A (en) * | 2011-10-04 | 2013-05-02 | Fuji Xerox Co Ltd | Developing device and image forming apparatus using the same |
-
1979
- 1979-03-01 JP JP2370179A patent/JPS55117171A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61230177A (en) * | 1985-04-04 | 1986-10-14 | Minolta Camera Co Ltd | Electrostatic latent image developing device |
JP2013080131A (en) * | 2011-10-04 | 2013-05-02 | Fuji Xerox Co Ltd | Developing device and image forming apparatus using the same |
Also Published As
Publication number | Publication date |
---|---|
JPS64694B2 (en) | 1989-01-09 |
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