JPS6349569U - - Google Patents
Info
- Publication number
- JPS6349569U JPS6349569U JP14256886U JP14256886U JPS6349569U JP S6349569 U JPS6349569 U JP S6349569U JP 14256886 U JP14256886 U JP 14256886U JP 14256886 U JP14256886 U JP 14256886U JP S6349569 U JPS6349569 U JP S6349569U
- Authority
- JP
- Japan
- Prior art keywords
- rotating member
- developer
- sensor
- component mixed
- stirring
- 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 description 10
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の原理図、第２図は本考案の第
１の実施例の現像剤濃度検知機構を示す正面図、
第３図ａ及び第３図ｂは同検出部清掃用ブラシの
取り付け要領説明図、第４図は第２図の検出部清
掃用ブラシの効果説明図、第５図は本考案の第２
の実施例の現像剤濃度検知機構を示す正面図、第
６図ａ〜ｃは本考案で使用する検出部清掃部材の
他の例を示す斜視図、第７図は従来の電子写真用
現像器の構造を示す正面図、第８図は従来構造の
場合のセンサ検出部への現像剤固着発生状況説明
図、第９図は従来構造の場合の誤検出発生説明図
で、
図中、２１は現像器、２３は現像タンク、２５
はバケツトローラ（回転部材）、２９は現像剤濃
度検出用センサ、３１，４２はブラシ（清掃部材
）、３２はセンサの上面（検出部）、４１は撹拌
ローラ（回転部材）、５１，５２，５３は清掃部
材、１００は２成分混合現像剤である。
FIG. 1 is a diagram of the principle of the present invention, and FIG. 2 is a front view showing the developer concentration detection mechanism of the first embodiment of the present invention.
Figures 3a and 3b are explanatory diagrams of how to install the detection part cleaning brush, Figure 4 is an illustration of the effect of the detection part cleaning brush of Figure 2, and Figure 5 is the second embodiment of the present invention.
FIGS. 6a to 6c are perspective views showing other examples of the detection unit cleaning member used in the present invention, and FIG. 7 is a conventional electrophotographic developing device. 8 is an explanatory diagram of the occurrence of developer sticking to the sensor detection part in the case of the conventional structure. FIG. 9 is an explanatory diagram of the occurrence of false detection in the case of the conventional structure. In the figure, 21 is Developing device, 23 is a developing tank, 25
is a bucket troller (rotating member), 29 is a developer concentration detection sensor, 31 and 42 are brushes (cleaning members), 32 is the upper surface of the sensor (detection part), 41 is a stirring roller (rotating member), 51, 52, 53 is a cleaning member, and 100 is a two-component mixed developer.
Claims (1)
ク２３内に、該２成分混合現像剤を撹拌、搬送す
る回転部材２５が設けられ、 かつ、前記現像タンクに、現像剤濃度検出用セ
ンサ２９が設けられた電子写真用現像器において
、 前記センサを、前記回転部材に対向する位置で
前記現像タンクに固定するとともに、 前記回転部材に、該回転部材の回転時に前記セ
ンサ２９の検出部３２をはき取る可撓性の清掃部
材３１を固定したことを特徴とする現像剤濃度検
知機構。[Claims for Utility Model Registration] A rotating member 25 for stirring and transporting the two-component mixed developer is provided in the developing tank 23 to which the two-component mixed developer 100 is supplied, and a rotating member 25 for stirring and conveying the two-component mixed developer 100 is provided, and In an electrophotographic developing device provided with a sensor 29 for detecting agent concentration, the sensor is fixed to the developer tank at a position facing the rotating member, and the sensor is attached to the rotating member when the rotating member rotates. 2. A developer concentration detection mechanism characterized in that a flexible cleaning member 31 for scraping off a detection section 32 of No. 29 is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14256886U JPS6349569U (en) | 1986-09-19 | 1986-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14256886U JPS6349569U (en) | 1986-09-19 | 1986-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6349569U true JPS6349569U (en) | 1988-04-04 |
Family
ID=31051424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14256886U Pending JPS6349569U (en) | 1986-09-19 | 1986-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6349569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05323794A (en) * | 1992-05-18 | 1993-12-07 | Fujitsu Ltd | Developing device |
-
1986
- 1986-09-19 JP JP14256886U patent/JPS6349569U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05323794A (en) * | 1992-05-18 | 1993-12-07 | Fujitsu Ltd | Developing device |
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