JPS63130775U - - Google Patents
Info
- Publication number
- JPS63130775U JPS63130775U JP2391487U JP2391487U JPS63130775U JP S63130775 U JPS63130775 U JP S63130775U JP 2391487 U JP2391487 U JP 2391487U JP 2391487 U JP2391487 U JP 2391487U JP S63130775 U JPS63130775 U JP S63130775U
- Authority
- JP
- Japan
- Prior art keywords
- developing
- magnetic roller
- area
- facing
- drive mechanism
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
図面は本考案に係る現像装置の一実施例を示し
、第１図は垂直断面図、第２図は駆動機構の正面
図である。
１……感光体ドラム、１０，２０……現像器、
１１，２１……現像スリーブ、１２，２２……磁
気ローラ、３０……駆動機構、３１……減速歯車
群、３２……カム歯車、３３……カム、３５……
カム歯車、４０……モータ、４５……カム、４６
……フオトセンサ、Ｘ１，Ｘ２……現像領域、Ｓ
１……主極。
The drawings show an embodiment of the developing device according to the present invention, with FIG. 1 being a vertical sectional view and FIG. 2 being a front view of the drive mechanism. 1... Photosensitive drum, 10, 20... Developing device,
11, 21... Developing sleeve, 12, 22... Magnetic roller, 30... Drive mechanism, 31... Reduction gear group, 32... Cam gear, 33... Cam, 35...
Cam gear, 40...Motor, 45...Cam, 46
... Photo sensor, X 1 , X 2 ... Development area, S
1 ...Main pole.
Claims (1)
た磁気ローラを設け、現像スリーブの外周面に保
持された現像剤を現像スリーブの回転に基づいて
静電潜像担体の表面と対向する現像領域に搬送す
る様にした二つの現像器を静電潜像担体の移動方
向に並設した現像装置において、 二つの磁気ローラを、一方の磁気ローラの主極
が現像領域に対向するとき他方の磁気ローラの主
極が現像領域から離隔する様に連動して回動させ
る駆動機構と、 前記駆動機構の駆動源としてのモータと、 いずれか一方の磁気ローラの主極が現像領域に
対する対向位置又は離隔位置まで回動したことを
検出し、その検出信号にて前記モータをオフさせ
る検出手段と、 を備えたことを特徴とする現像装置。[Claims for Utility Model Registration] A magnetic roller with S and N poles arranged in the circumferential direction is provided inside the developing sleeve, and the developer held on the outer circumferential surface of the developing sleeve is electrostatically charged based on the rotation of the developing sleeve. In a developing device in which two developing devices are arranged side by side in the direction of movement of an electrostatic latent image carrier, the two developing devices are conveyed to a developing area facing the surface of the image carrier. a drive mechanism that rotates the other magnetic roller in conjunction with the other magnetic roller so that its main pole is separated from the development area when facing the development area; a motor as a drive source for the drive mechanism; and a main pole of one of the magnetic rollers. A developing device comprising: detecting means for detecting that a pole has rotated to a position facing or away from a developing area, and turning off the motor based on a detection signal thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2391487U JPS63130775U (en) | 1987-02-19 | 1987-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2391487U JPS63130775U (en) | 1987-02-19 | 1987-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63130775U true JPS63130775U (en) | 1988-08-26 |
Family
ID=30822660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2391487U Pending JPS63130775U (en) | 1987-02-19 | 1987-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130775U (en) |
-
1987
- 1987-02-19 JP JP2391487U patent/JPS63130775U/ja active Pending
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