JPH0197359U - - Google Patents
Info
- Publication number
- JPH0197359U JPH0197359U JP19214487U JP19214487U JPH0197359U JP H0197359 U JPH0197359 U JP H0197359U JP 19214487 U JP19214487 U JP 19214487U JP 19214487 U JP19214487 U JP 19214487U JP H0197359 U JPH0197359 U JP H0197359U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developing device
- sensor
- amount
- sensor section
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
図はこの考案の一実施例を示し、第１図は本願
現像装置を組んだ作像ユニツトの拡大断面図、第
２図は現像スリーブと第一撹拌部材との関係を示
す説明図、第３図は実施例の作用を示す説明図、
第４図はトナー補給室の開口溝と遮蔽部材を示す
断面図、第５図は同斜視図である。
１５…現像スリーブ、１６…第一撹拌部材、１
７…第二撹拌部材、２０…仕切り板、２１…開口
、２２…傾斜板、２３…トナー濃度センサー、２
６…補給室、２９…開口溝、３０…口端部材、３
１…補給ローラ、３２…遮蔽部材（補給量制限手
段）、３３…壁（トナーの流れ込みを防止する手
段）。
The figures show one embodiment of this invention, in which Fig. 1 is an enlarged sectional view of an image forming unit incorporating the developing device of the present application, Fig. 2 is an explanatory view showing the relationship between the developing sleeve and the first stirring member, and Fig. 3 is an explanatory view showing the relationship between the developing sleeve and the first stirring member. The figure is an explanatory diagram showing the effect of the embodiment,
FIG. 4 is a sectional view showing the opening groove and the shielding member of the toner supply chamber, and FIG. 5 is a perspective view thereof. 15...Developing sleeve, 16...First stirring member, 1
7... Second stirring member, 20... Partition plate, 21... Opening, 22... Inclined plate, 23... Toner concentration sensor, 2
6... Supply chamber, 29... Opening groove, 30... Mouth end member, 3
DESCRIPTION OF SYMBOLS 1... Replenishment roller, 32... Shield member (replenishment amount limiting means), 33... Wall (means for preventing toner from flowing in).
Claims (1)
を行うセンサーを備えた現像装置において、前記
センサー部へのトナー補給量を他の部分への補給
量に比して制限する手段を設けるとともに、セン
サー部に横方向からのトナーの流れ込みを防止す
る手段を設けたことを特徴とする現像装置。 (2) 前記横方向の流れ込み防止手段が、センサ
ー上方に設けた壁である実用新案登録請求の範囲
第１項記載の現像装置。[Claims for Utility Model Registration] (1) In a developing device equipped with a sensor that controls toner concentration using a magnetic permeability change detection method, the amount of toner supplied to the sensor section is compared to the amount of toner supplied to other parts. What is claimed is: 1. A developing device comprising a means for restricting toner and a means for preventing toner from flowing in the sensor section from the lateral direction. (2) The developing device according to claim 1, wherein the lateral flow prevention means is a wall provided above the sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19214487U JPH0197359U (en) | 1987-12-18 | 1987-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19214487U JPH0197359U (en) | 1987-12-18 | 1987-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0197359U true JPH0197359U (en) | 1989-06-28 |
Family
ID=31483017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19214487U Pending JPH0197359U (en) | 1987-12-18 | 1987-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0197359U (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575064A (en) * | 1980-06-12 | 1982-01-11 | Ricoh Co Ltd | Developing device |
| JPS60221781A (en) * | 1985-04-04 | 1985-11-06 | Ricoh Co Ltd | Developing device of copying machine |
| JPS6135470A (en) * | 1984-07-27 | 1986-02-19 | Hitachi Metals Ltd | Developing device |
| JPS61164150A (en) * | 1985-01-16 | 1986-07-24 | Akira Hirabayashi | Concentration detector for developer |
| JPS61193063A (en) * | 1985-02-21 | 1986-08-27 | Toshiba Corp | Detecting device for toner concentration |
-
1987
- 1987-12-18 JP JP19214487U patent/JPH0197359U/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575064A (en) * | 1980-06-12 | 1982-01-11 | Ricoh Co Ltd | Developing device |
| JPS6135470A (en) * | 1984-07-27 | 1986-02-19 | Hitachi Metals Ltd | Developing device |
| JPS61164150A (en) * | 1985-01-16 | 1986-07-24 | Akira Hirabayashi | Concentration detector for developer |
| JPS61193063A (en) * | 1985-02-21 | 1986-08-27 | Toshiba Corp | Detecting device for toner concentration |
| JPS60221781A (en) * | 1985-04-04 | 1985-11-06 | Ricoh Co Ltd | Developing device of copying machine |
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