JPS6459372A - Developer layer forming device and image forming device - Google Patents
Developer layer forming device and image forming deviceInfo
- Publication number
- JPS6459372A JPS6459372A JP21824187A JP21824187A JPS6459372A JP S6459372 A JPS6459372 A JP S6459372A JP 21824187 A JP21824187 A JP 21824187A JP 21824187 A JP21824187 A JP 21824187A JP S6459372 A JPS6459372 A JP S6459372A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- developer
- magnetic field
- layer
- blade
- 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 stably form a layer of a magnetic developer extending over a long period of time, by specifying the length in the direction separated from a developer carrying body on the magnetic field concentrated surface of a magnetic member. CONSTITUTION:On the lower edge side of an opening of a developer supplying device provided with a developing sleeve 22, a non-magnetic blade 24 being a developer control member provided along the longitudinal direction of the lower edge of the opening is provided by fixing the base part to the container side wall, and projecting the tip side to the outside of a container 36 from the lower edge position of the opening. As for a magnetic blade 50 for assisting a control of the non-magnetic plate 24, length (l) in the direction separated from a developer carrying body of a magnetic field concentrated surface being a side face positioned at a magnetic field generating part 23a side is set to 1-10mm. That is, the side face of the magnetic blade 50 concentrates a line of magnetic force from a magnetic pole 23a of the upstream side, but it is not concentrated mainly to the blade end part, and a concentrated magnetic field having width of an equalized distribution is formed on the whole of this surface. Accordingly, the generation of a lump of the developer is prevented. In such a way, the layer of the developer is equalized by a thin layer, and also, the formation of a stale layer can be attained extending over a long period of time.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21824187A JPS6459372A (en) | 1987-08-31 | 1987-08-31 | Developer layer forming device and image forming device |
US07/660,152 US5239343A (en) | 1987-08-31 | 1991-02-20 | Developing apparatus with regulating member having magnetic and non-magnetic members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21824187A JPS6459372A (en) | 1987-08-31 | 1987-08-31 | Developer layer forming device and image forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6459372A true JPS6459372A (en) | 1989-03-07 |
Family
ID=16716803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21824187A Pending JPS6459372A (en) | 1987-08-31 | 1987-08-31 | Developer layer forming device and image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6459372A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0412923A2 (en) * | 1989-08-11 | 1991-02-13 | Lexmark International, Inc. | Toner metering apparatus |
JPH04241153A (en) * | 1991-01-08 | 1992-08-28 | Nagata Seiki Co Ltd | Device of transporting cloth |
JPH04333646A (en) * | 1991-04-30 | 1992-11-20 | Nagata Seiki Co Ltd | Device for take-out of basic fabric |
JPH04352857A (en) * | 1991-05-23 | 1992-12-07 | Shima Seiki Mfg Ltd | Fabric-lowering apparatus of weft knitting machine |
JPH0892849A (en) * | 1994-09-19 | 1996-04-09 | Gunze Ltd | Fabric-winding device of circular knitting machine for knitted fabric |
JP2005017871A (en) * | 2003-06-27 | 2005-01-20 | Ricoh Co Ltd | Developing apparatus and image forming apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5975269A (en) * | 1982-10-22 | 1984-04-27 | Mita Ind Co Ltd | Magnetic brush developing method of electrostatic image |
JPS60252379A (en) * | 1984-05-30 | 1985-12-13 | Hitachi Ltd | Electrostatic image developing device |
-
1987
- 1987-08-31 JP JP21824187A patent/JPS6459372A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5975269A (en) * | 1982-10-22 | 1984-04-27 | Mita Ind Co Ltd | Magnetic brush developing method of electrostatic image |
JPS60252379A (en) * | 1984-05-30 | 1985-12-13 | Hitachi Ltd | Electrostatic image developing device |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0412923A2 (en) * | 1989-08-11 | 1991-02-13 | Lexmark International, Inc. | Toner metering apparatus |
JPH04241153A (en) * | 1991-01-08 | 1992-08-28 | Nagata Seiki Co Ltd | Device of transporting cloth |
JPH04333646A (en) * | 1991-04-30 | 1992-11-20 | Nagata Seiki Co Ltd | Device for take-out of basic fabric |
JPH04352857A (en) * | 1991-05-23 | 1992-12-07 | Shima Seiki Mfg Ltd | Fabric-lowering apparatus of weft knitting machine |
JPH0892849A (en) * | 1994-09-19 | 1996-04-09 | Gunze Ltd | Fabric-winding device of circular knitting machine for knitted fabric |
JP2005017871A (en) * | 2003-06-27 | 2005-01-20 | Ricoh Co Ltd | Developing apparatus and image forming apparatus |
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