JPS61190558U - - Google Patents
Info
- Publication number
- JPS61190558U JPS61190558U JP7320885U JP7320885U JPS61190558U JP S61190558 U JPS61190558 U JP S61190558U JP 7320885 U JP7320885 U JP 7320885U JP 7320885 U JP7320885 U JP 7320885U JP S61190558 U JPS61190558 U JP S61190558U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developer
- magnetic sleeve
- magnetic
- discharge port
- 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
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第1図は本考案の一実施例に係る現像装置の断
面図である。
1:感光体ドラム、2:現像剤、4:非磁性ス
リーブ、7:永久磁石部材、13:トナー補給ロ
ーラ。
FIG. 1 is a sectional view of a developing device according to an embodiment of the present invention. 1: Photosensitive drum, 2: Developer, 4: Non-magnetic sleeve, 7: Permanent magnet member, 13: Toner supply roller.
Claims (1)
する回転自在な非磁性スリーブと、該非磁性スリ
ーブ内に配置された複数個の磁極を有する永久磁
石部材と、前記現像剤を収容する現像剤槽と、前
記トナーを収容しかつ前記現像剤槽と連通するト
ナー排出口を有しかつ該排出口にトナー補給用可
動部材を有するトナー槽と、前記非磁性スリーブ
上に保持された現像剤の厚さを規制するドクター
部材と、前記非磁性スリーブに現像バイアス電圧
を印加する直流電源とを有する現像装置において
、前記非磁性スリーブと前記ドクター部材との間
に電流検出部材を接続し、該電流検出部材により
検出された電流値に応じて前記トナー補給用可動
部材の駆動を制御する制御手段を設けたことを特
徴とする現像装置。 a rotatable non-magnetic sleeve holding a developer containing a mixture of magnetic carrier and toner; a permanent magnet member having a plurality of magnetic poles disposed within the non-magnetic sleeve; and a developer tank containing the developer; A toner tank containing the toner and having a toner discharge port communicating with the developer tank, the discharge port having a movable member for replenishing toner, and a thickness of the developer held on the non-magnetic sleeve. In a developing device having a regulating doctor member and a DC power source applying a developing bias voltage to the non-magnetic sleeve, a current detecting member is connected between the non-magnetic sleeve and the doctor member, and the current detecting member A developing device comprising a control means for controlling driving of the toner replenishing movable member according to a detected current value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7320885U JPS61190558U (en) | 1985-05-17 | 1985-05-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7320885U JPS61190558U (en) | 1985-05-17 | 1985-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61190558U true JPS61190558U (en) | 1986-11-27 |
Family
ID=30612350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7320885U Pending JPS61190558U (en) | 1985-05-17 | 1985-05-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61190558U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010060999A (en) * | 2008-09-05 | 2010-03-18 | Canon Inc | Image forming apparatus |
JP2013214105A (en) * | 2013-07-16 | 2013-10-17 | Canon Inc | Image forming apparatus |
-
1985
- 1985-05-17 JP JP7320885U patent/JPS61190558U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010060999A (en) * | 2008-09-05 | 2010-03-18 | Canon Inc | Image forming apparatus |
JP2013214105A (en) * | 2013-07-16 | 2013-10-17 | Canon Inc | Image forming apparatus |
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