JPS6246469U - - Google Patents
Info
- Publication number
- JPS6246469U JPS6246469U JP11211686U JP11211686U JPS6246469U JP S6246469 U JPS6246469 U JP S6246469U JP 11211686 U JP11211686 U JP 11211686U JP 11211686 U JP11211686 U JP 11211686U JP S6246469 U JPS6246469 U JP S6246469U
- Authority
- JP
- Japan
- Prior art keywords
- developer
- sleeve
- magnetic poles
- magnetic
- toner concentration
- 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 6
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
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図は従来の現像装置の説明図、第２図は本
考案に係る現像装置の説明図、第３図は回転スリ
ーブと検知コイルの間の磁束の影響を説明する図
である。
１…回転スリーブ、２…磁極、３…マグネツト
ブロツク、６…感光体、８…トナー濃度検出装置
、９…磁気シールド板。
FIG. 1 is an explanatory diagram of a conventional developing device, FIG. 2 is an explanatory diagram of a developing device according to the present invention, and FIG. 3 is a diagram illustrating the influence of magnetic flux between a rotating sleeve and a detection coil. DESCRIPTION OF SYMBOLS 1...Rotating sleeve, 2...Magnetic pole, 3...Magnetic block, 6...Photoreceptor, 8...Toner concentration detection device, 9...Magnetic shield plate.
Claims (1)
する固定マグネツトブロツクを設け、回転スリー
ブの回転によりスリーブ上に順次磁気ブラシを形
成して潜像担持体上の潜像を現像する乾式二成分
現像装置において、現像終了後の現像剤の一部を
通過させて現像剤の密度をインダクタンス変化と
して検知する検知コイルを有するトナー濃度検出
装置を有し、マグネツトブロツクの磁極の数を奇
数個とし、かつ隣り合う磁極は互いに逆極性とし
て現像剤を搬送循環させ、その際に１ケ所に生じ
る互いに同極性の隣り合う２つの磁極の間に現像
終了後のスリーブ上の現像剤を掻き落とすセパレ
ータを配設し、このセパレータの下位に前記トナ
ー濃度検出装置を設けたこと、前記回転スリーブ
と前記トナー濃度検出装置との間に磁気シールド
板を設けたことを特徴とする複写機の現像装置。 A dry two-component developing device that includes a fixed magnetic block having a plurality of magnetic poles arranged inside a rotating sleeve, and develops a latent image on a latent image carrier by sequentially forming magnetic brushes on the sleeve as the rotating sleeve rotates. The toner concentration detection device has a detection coil that detects the density of the developer as a change in inductance by passing a part of the developer after development is completed, and the number of magnetic poles of the magnetic block is an odd number, and Adjacent magnetic poles have opposite polarities to transport and circulate the developer, and a separator is placed between the two adjacent magnetic poles of the same polarity generated at one location to scrape off the developer on the sleeve after development is completed. A developing device for a copying machine, characterized in that the toner concentration detection device is provided below the separator, and a magnetic shield plate is provided between the rotary sleeve and the toner concentration detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11211686U JPS6246469U (en) | 1986-07-23 | 1986-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11211686U JPS6246469U (en) | 1986-07-23 | 1986-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6246469U true JPS6246469U (en) | 1987-03-20 |
Family
ID=30992682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11211686U Pending JPS6246469U (en) | 1986-07-23 | 1986-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6246469U (en) |
-
1986
- 1986-07-23 JP JP11211686U patent/JPS6246469U/ja active Pending
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