JPS55117169A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS55117169A JPS55117169A JP2369979A JP2369979A JPS55117169A JP S55117169 A JPS55117169 A JP S55117169A JP 2369979 A JP2369979 A JP 2369979A JP 2369979 A JP2369979 A JP 2369979A JP S55117169 A JPS55117169 A JP S55117169A
- Authority
- JP
- Japan
- Prior art keywords
- developing
- magnetic
- density
- blade
- sleeve
- 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 developing density to be changed according to picture quality and obtain always good visible image by changing the magnetic flux density on a developer supporting means thereby selectively adjusting the thickness of the thin and even developer layer on the supporting means.
CONSTITUTION: A defining blade 6 composed of magnetic material for coating toner 8 on a developing sleeve 5 to a layer of a suitable thickness is provided and the shaft 9 fixed to a magnet roll 4 is rotated by the driving means interlocked to, e.g., operating knob, at the non-developing to select the magnetic pole to be opposed to the blade 6. By changing the magnetic density on the sleeve 5 opposing to the blade 6, the thickness of the toner layer of the magnetic toner 8 to be coated on the sleeve 5 is changed so that the developing density may be selectively changed. Thereby, the development may be done at varying densities according to image quality and always good visible images may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2369979A JPS55117169A (en) | 1979-03-01 | 1979-03-01 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2369979A JPS55117169A (en) | 1979-03-01 | 1979-03-01 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55117169A true JPS55117169A (en) | 1980-09-09 |
JPS64693B2 JPS64693B2 (en) | 1989-01-09 |
Family
ID=12117634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2369979A Granted JPS55117169A (en) | 1979-03-01 | 1979-03-01 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117169A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49126856U (en) * | 1973-02-15 | 1974-10-30 | ||
JPS5217831A (en) * | 1975-07-31 | 1977-02-10 | Ricoh Co Ltd | Electrophotography |
JPS53125844A (en) * | 1977-04-11 | 1978-11-02 | Matsushita Electric Ind Co Ltd | Developing apparatus for electrostatic photography |
-
1979
- 1979-03-01 JP JP2369979A patent/JPS55117169A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49126856U (en) * | 1973-02-15 | 1974-10-30 | ||
JPS5217831A (en) * | 1975-07-31 | 1977-02-10 | Ricoh Co Ltd | Electrophotography |
JPS53125844A (en) * | 1977-04-11 | 1978-11-02 | Matsushita Electric Ind Co Ltd | Developing apparatus for electrostatic photography |
Also Published As
Publication number | Publication date |
---|---|
JPS64693B2 (en) | 1989-01-09 |
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