JPS55151671A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS55151671A JPS55151671A JP6078179A JP6078179A JPS55151671A JP S55151671 A JPS55151671 A JP S55151671A JP 6078179 A JP6078179 A JP 6078179A JP 6078179 A JP6078179 A JP 6078179A JP S55151671 A JPS55151671 A JP S55151671A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- doctor blade
- toners
- developer
- supporting means
- 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 obtain the good-quality sensible images of high image sharpness by making the surface magnetic flux density on the developer carrier surface of the magnetic poles opposing to a thickness defining member 750 gauss or more by the use of the specific magnetic developer.
CONSTITUTION: A developer supporting means 11 is provided in opposition to a photosensitive drum 4 and a stationary magnet 12 is provided therein. The thickness of the magnetic toners 15 which contain 15W50wt% of magnetic material and are 5μ or more in mean grain size is defined by a doctor blade 13 and the magnetic toners 15 become continuous in yarn-form along the magnetic lines of force in the magnetic field, the density whereof is considerably lower than that in an ordinary state. If in this way they are defined by the doctor blade 13 in the place where the magnetic field acts, they may be made considerably thin. Since there is no need for making the spacing between the doctor blade 13 and toner supporting means 11 extremely small, the clogging of the toners is prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6078179A JPS55151671A (en) | 1979-05-17 | 1979-05-17 | Developing device |
DE19803008862 DE3008862A1 (en) | 1979-03-09 | 1980-03-07 | Toner developer for photocopier - has magnetic pick=up and magnetic scraper to limit thickness of layer applied to carrier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6078179A JPS55151671A (en) | 1979-05-17 | 1979-05-17 | Developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55151671A true JPS55151671A (en) | 1980-11-26 |
Family
ID=13152167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6078179A Pending JPS55151671A (en) | 1979-03-09 | 1979-05-17 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151671A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6073659A (en) * | 1983-09-30 | 1985-04-25 | Ricoh Co Ltd | Controller for layer thickness of magnetic particle |
JPS61189583A (en) * | 1985-02-19 | 1986-08-23 | Kyocera Corp | Forming device for toner layer |
-
1979
- 1979-05-17 JP JP6078179A patent/JPS55151671A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6073659A (en) * | 1983-09-30 | 1985-04-25 | Ricoh Co Ltd | Controller for layer thickness of magnetic particle |
JPH0535430B2 (en) * | 1983-09-30 | 1993-05-26 | Ricoh Kk | |
JPS61189583A (en) * | 1985-02-19 | 1986-08-23 | Kyocera Corp | Forming device for toner layer |
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