JPH0314660U - - Google Patents
Info
- Publication number
- JPH0314660U JPH0314660U JP7514489U JP7514489U JPH0314660U JP H0314660 U JPH0314660 U JP H0314660U JP 7514489 U JP7514489 U JP 7514489U JP 7514489 U JP7514489 U JP 7514489U JP H0314660 U JPH0314660 U JP H0314660U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- helical rotor
- developing
- developing sleeve
- rotor
- 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
- 238000005192 partition Methods 0.000 claims description 3
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図は現像装置の概略縦断側面図、第２図は
現像装置の下部側を示す平面図、第３図は現像装
置の要部の分解斜視図、第４図は従来例の現像装
置の概略縦断側面図である。
１……現像ケース、２……感光体、３……開口
部、４……現像スリーブ、６……第１螺旋回転体
、７……第２螺旋回転体、８……隔壁、ａ……ト
ナー導入口。
Fig. 1 is a schematic vertical side view of the developing device, Fig. 2 is a plan view showing the lower side of the developing device, Fig. 3 is an exploded perspective view of the main parts of the developing device, and Fig. 4 is a diagram of a conventional developing device. FIG. 2 is a schematic vertical side view. DESCRIPTION OF SYMBOLS 1...Development case, 2...Photoreceptor, 3...Opening, 4...Development sleeve, 6...First spiral rotor, 7...Second spiral rotor, 8...Partition wall, a... Toner inlet.
Claims (1)
成分系トナーを担持する現像スリーブを設けると
共に、該現像スリーブに対して現像部の下流側に
、現像スリーブと同方向に回転してスリーブ表面
の残留トナーを回収する第１螺旋回転体を設け、
かつ、当該第１螺旋回転体を摩擦接触により回収
トナーの電荷を下げる帯電系列の材料から構成す
る一方、第１螺旋回転体とは逆向きの螺旋で且つ
現像スリーブと同方向に回転してスリーブ表面に
トナーを供給する第２の螺旋回転体を、トナーを
摩擦帯電させる帯電系列の材料で構成して前記第
１螺旋回転体の下流側に配設し、更に、第１螺旋
回転体と第２螺旋回転体との間に隔壁を設けると
共に、前記第１螺旋回転体による回収トナーの移
送方向終端に対応する部位の隔壁に、回収トナー
を第２螺旋回転体側に導入させるトナー導入口を
形成してあることを特徴とする画像形成装置の現
像装置。 A developing sleeve carrying mono-component toner is provided in an opening corresponding to the photoreceptor of the developing case, and the sleeve surface is rotated in the same direction as the developing sleeve on the downstream side of the developing section with respect to the developing sleeve. a first spiral rotor for collecting residual toner;
The first helical rotor is made of a charging material that lowers the electric charge of the collected toner through frictional contact, while the first helical rotor has a spiral in the opposite direction to the developing sleeve and rotates in the same direction as the developing sleeve. A second helical rotor that supplies toner to the surface is made of a charging material that triboelectrically charges the toner and is disposed downstream of the first helical rotor; A partition wall is provided between the two helical rotors, and a toner introduction port for introducing the collected toner into the second helical rotor is formed in the partition wall at a portion corresponding to an end in a direction in which the collected toner is transferred by the first helical rotor. A developing device for an image forming apparatus, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7514489U JPH0314660U (en) | 1989-06-26 | 1989-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7514489U JPH0314660U (en) | 1989-06-26 | 1989-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0314660U true JPH0314660U (en) | 1991-02-14 |
Family
ID=31615463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7514489U Pending JPH0314660U (en) | 1989-06-26 | 1989-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314660U (en) |
-
1989
- 1989-06-26 JP JP7514489U patent/JPH0314660U/ja active Pending