JPS62106264U - - Google Patents
Info
- Publication number
- JPS62106264U JPS62106264U JP19825985U JP19825985U JPS62106264U JP S62106264 U JPS62106264 U JP S62106264U JP 19825985 U JP19825985 U JP 19825985U JP 19825985 U JP19825985 U JP 19825985U JP S62106264 U JPS62106264 U JP S62106264U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- electrostatic field
- detection member
- concentration detection
- sensor
- 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 7
- 230000005686 electrostatic field Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第１図はこの考案の一実施例装置の全体説明図
、第２図はトナー濃度検出機構を組み込んだ現像
装置の内部構造説明図及びその要部の拡大図、第
３図は導電性ロールに加える電圧の時間変化を示
す図及びセンサの検出信号と導電性ロール上トナ
ー濃度の関係を示す図、第４図は導電性ロール電
位と導電性ロール濃度の関係を示す図、第５図は
感光ドラム上像濃度、感光ドラム上表面電位、セ
ンサ及びセンサの現像電位の関係を示す図である
。
〔符号説明〕、８……検出用導電性ロール、９
……検出用センサ、１６……現像・クリーニング
用電源、１９……制御部。
Fig. 1 is an overall explanatory diagram of an embodiment of the device of this invention, Fig. 2 is an explanatory diagram of the internal structure of a developing device incorporating a toner concentration detection mechanism and an enlarged view of its main parts, and Fig. 3 is an illustration of a conductive roll. A diagram showing the change in applied voltage over time, a diagram showing the relationship between the detection signal of the sensor and the toner concentration on the conductive roll, FIG. FIG. 2 is a diagram showing the relationship among the image density on the drum, the surface potential on the photosensitive drum, the sensor, and the development potential of the sensor. [Explanation of symbols], 8... conductive roll for detection, 9
...Detection sensor, 16...Power source for development/cleaning, 19...Control unit.
Claims (1)
材と、このトナー濃度検出用部材にトナーを付着
させるための静電界を形成すると共に、その静電
界の大きさが複数段階のレベルに設定された静電
界手段と、上記トナー濃度検出用部材に上記各静
電界レベルに応じて付着するトナーの濃度を検出
するセンサとを有することを特徴とするトナー濃
度検出装置。 A toner concentration detection member to which toner is attached; and an electrostatic field means that forms an electrostatic field for causing toner to adhere to the toner concentration detection member, and the magnitude of the electrostatic field is set at multiple levels. and a sensor for detecting the concentration of toner adhering to the toner concentration detection member according to each of the electrostatic field levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19825985U JPS62106264U (en) | 1985-12-25 | 1985-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19825985U JPS62106264U (en) | 1985-12-25 | 1985-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62106264U true JPS62106264U (en) | 1987-07-07 |
Family
ID=31158778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19825985U Pending JPS62106264U (en) | 1985-12-25 | 1985-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62106264U (en) |
-
1985
- 1985-12-25 JP JP19825985U patent/JPS62106264U/ja active Pending
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