JPS6294359U - - Google Patents
Info
- Publication number
- JPS6294359U JPS6294359U JP18646085U JP18646085U JPS6294359U JP S6294359 U JPS6294359 U JP S6294359U JP 18646085 U JP18646085 U JP 18646085U JP 18646085 U JP18646085 U JP 18646085U JP S6294359 U JPS6294359 U JP S6294359U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- photoreceptor
- selection means
- induction
- induction magnetic
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 5
- 108091008695 photoreceptors Proteins 0.000 claims 3
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- 239000006247 magnetic powder Substances 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図はこの考案を適用した複写機における現
像装置を表す図、第２図はこの考案を適用した複
写機の内部構造を表す図、第３図は従来の複写機
における現像装置を表す図である。
１ａ，１ｂ―現像槽、２ａ，２ｂ―マグネツト
ローラ、３ａ，３ｂ―スリーブ、４ａ，４ｂ―磁
気ブラシ、１０―感光体ドラム、２０―誘導磁極
、ｍａ，ｍｂ―主磁極。
Figure 1 is a diagram showing the developing device in a copying machine to which this invention is applied, Figure 2 is a diagram showing the internal structure of a copying machine to which this invention is applied, and Figure 3 is a diagram showing the developing device in a conventional copying machine. It is. 1a, 1b - developer tank, 2a, 2b - magnet roller, 3a, 3b - sleeve, 4a, 4b - magnetic brush, 10 - photosensitive drum, 20 - induction magnetic pole, ma, mb - main magnetic pole.
Claims (1)
に対するトナーの付着を選択的に行う選択手段を
有するものであつて、 前記複数の現像槽の各々は磁性体粉とトナーを
収納し、磁気ブラシの穂立ちを生じさせる主磁極
を有するローラを備え、前記選択手段は前記ロー
ラに対向する前記感光体の背面に配置された強磁
性体でかつ低保磁力の誘導磁極と、この誘導磁極
を近接あるいは離間配置する誘導磁極移動手段を
含み、前記主磁極と前記誘導磁極との相互作用に
よつて、前記ブラシの穂立ちを制御することを特
徴とする画像形成装置。[Claims for Utility Model Registration] A device having a plurality of developing tanks in close proximity to a photoreceptor, and having selection means for selectively attaching toner to the photoreceptor, each of the plurality of developing tanks The selection means includes a roller having a main magnetic pole that stores magnetic powder and toner and causes the magnetic brush to stand up, and the selection means is made of a ferromagnetic material with low retention disposed on the back surface of the photoreceptor facing the roller. It is characterized by comprising a magnetic induction magnetic pole and an induction magnetic pole moving means for arranging the induction magnetic pole close to or apart from each other, and controlling the standing of the brush by interaction between the main magnetic pole and the induction magnetic pole. Image forming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18646085U JPS6294359U (en) | 1985-12-02 | 1985-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18646085U JPS6294359U (en) | 1985-12-02 | 1985-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6294359U true JPS6294359U (en) | 1987-06-16 |
Family
ID=31136037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18646085U Pending JPS6294359U (en) | 1985-12-02 | 1985-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6294359U (en) |
-
1985
- 1985-12-02 JP JP18646085U patent/JPS6294359U/ja active Pending