JPS5473642A - Developing apparatus - Google Patents
Developing apparatusInfo
- Publication number
- JPS5473642A JPS5473642A JP14098877A JP14098877A JPS5473642A JP S5473642 A JPS5473642 A JP S5473642A JP 14098877 A JP14098877 A JP 14098877A JP 14098877 A JP14098877 A JP 14098877A JP S5473642 A JPS5473642 A JP S5473642A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- recording body
- electromagnet
- rear end
- conveyor drum
- 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 back soiling of sheet-like recording boby, by controlling an electromagnet so that the magnetic brush may be formed only when the sheet-like recording body is at the position capable of contacting the developer, and thereby preventing the developer from touching the conveyor drum.
CONSTITUTION: A recording body 2 is conveyed by a conveyor drum 8, and when the end thereof reaches the minimum gap position 28 between the sleeve 14 and the conveyor drum 8, an electromagnet 23 is energized so that the developer reaches the position 28 above the sleeve 14. When the rear end of the recording body 2 passes through the position 28, the rear end of the developer is stopped to reach this position also. For this purpose, a phototube device 29 to detect the front end and the rear end of the recording body 2 is provided in the vicinity of a guide plate 7, and the power supply to the electromagnet 23 is controlled by a control part 31 connected to a detecting part 30, hence a proper timing is taken.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14098877A JPS5473642A (en) | 1977-11-24 | 1977-11-24 | Developing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14098877A JPS5473642A (en) | 1977-11-24 | 1977-11-24 | Developing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5473642A true JPS5473642A (en) | 1979-06-13 |
Family
ID=15281519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14098877A Pending JPS5473642A (en) | 1977-11-24 | 1977-11-24 | Developing apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5473642A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61174574A (en) * | 1985-01-29 | 1986-08-06 | Konishiroku Photo Ind Co Ltd | Developing device |
JP2006267287A (en) * | 2005-03-22 | 2006-10-05 | Fuji Xerox Co Ltd | Developing device |
-
1977
- 1977-11-24 JP JP14098877A patent/JPS5473642A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61174574A (en) * | 1985-01-29 | 1986-08-06 | Konishiroku Photo Ind Co Ltd | Developing device |
JPH0519707B2 (en) * | 1985-01-29 | 1993-03-17 | Konishiroku Photo Ind | |
JP2006267287A (en) * | 2005-03-22 | 2006-10-05 | Fuji Xerox Co Ltd | Developing device |
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