JPH01125461U - - Google Patents
Info
- Publication number
- JPH01125461U JPH01125461U JP1807888U JP1807888U JPH01125461U JP H01125461 U JPH01125461 U JP H01125461U JP 1807888 U JP1807888 U JP 1807888U JP 1807888 U JP1807888 U JP 1807888U JP H01125461 U JPH01125461 U JP H01125461U
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing roller
- developing device
- developing
- guide member
- 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
- 108091008695 photoreceptors Proteins 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図及び第２図は本考案の実施例のある現像
ユニツトの非現像時及び現像時の状態を示す断面
図、第３図及び第４図は従来の装置の同様の断面
図である。
１……感光体ドラム、２……現像スリーブ、３
……磁性板、４，５……磁石、６……パドルホイ
ール（現像剤供給部材）、７……環流案内部材、
８……堰止め部材、９……ドクター部材、１０…
…余剰現像剤、１１……滞溜現像剤、１２……現
像部、Ａ，Ｂ，Ｃ……現像ユニツト。
1 and 2 are sectional views showing a developing unit according to an embodiment of the present invention in non-developing and developing states, and FIGS. 3 and 4 are similar sectional views of a conventional apparatus. 1...Photosensitive drum, 2...Developing sleeve, 3
... Magnetic plate, 4, 5 ... Magnet, 6 ... Paddle wheel (developer supply member), 7 ... Circulation guide member,
8... Dam member, 9... Doctor member, 10...
...excess developer, 11...stagnant developer, 12...developing section, A, B, C...developing unit.
Claims (1)
光体側の反対側で現像器内に貯溜された現像剤が
供給され、現像ローラの回転により現像剤が感光
体に接近した現像位置に搬送され、搬送過程で現
像ローラ上の現像剤層はドクター部材により層厚
を規制され、余剰の現像剤は現像器に固設された
環流案内部材の上面に沿つて環流されるとともに
、現像ローラへの現像剤の供給を遮断する手段を
有す静電記録装置の現像装置において、上記の現
像剤環流案内部材の現像剤導入側端部に現像剤の
流入は許容し、逆流を防止する堰止め部材を設け
たことを特徴とする現像装置。 (2) 上記の堰止め部材が環流案内部材に下端を
固定された可撓性非磁性薄板であることを特徴と
する請求項１に記載の現像装置。[Claims for Utility Model Registration] (1) A developing roller rotating in contact with a photoreceptor is supplied with developer stored in a developing device on the opposite side of the photoreceptor, and the rotation of the developing roller causes the developer to be exposed to light. During the transportation process, the thickness of the developer layer on the developing roller is regulated by a doctor member, and excess developer is distributed along the upper surface of a circulation guide member fixed to the developer. In a developing device of an electrostatic recording device having a means for circulating developer and blocking the supply of developer to the developing roller, developer is allowed to flow into the developer introduction side end of the developer circulation guide member described above. A developing device characterized in that it is provided with a dam member that prevents backflow. (2) The developing device according to claim 1, wherein the dam member is a flexible non-magnetic thin plate whose lower end is fixed to the circulation guide member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1807888U JPH01125461U (en) | 1988-02-16 | 1988-02-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1807888U JPH01125461U (en) | 1988-02-16 | 1988-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01125461U true JPH01125461U (en) | 1989-08-28 |
Family
ID=31232397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1807888U Pending JPH01125461U (en) | 1988-02-16 | 1988-02-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01125461U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61198258A (en) * | 1985-02-28 | 1986-09-02 | Canon Inc | Developing device |
| JPS6325667A (en) * | 1986-07-18 | 1988-02-03 | Ricoh Co Ltd | Multi-color developing device |
-
1988
- 1988-02-16 JP JP1807888U patent/JPH01125461U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61198258A (en) * | 1985-02-28 | 1986-09-02 | Canon Inc | Developing device |
| JPS6325667A (en) * | 1986-07-18 | 1988-02-03 | Ricoh Co Ltd | Multi-color developing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01125461U (en) | ||
| JPS6349571U (en) | ||
| JPS60184068U (en) | Stirring roller of two-component developing device | |
| JPH01135454U (en) | ||
| JPS63140556U (en) | ||
| JPH0295354U (en) | ||
| JPS6296661U (en) | ||
| JPS5840760U (en) | developing device | |
| JPH0411559U (en) | ||
| JPS61196260U (en) | ||
| JPS5958460U (en) | magnetic brush developing device | |
| JPH01128268U (en) | ||
| JPH0162562U (en) | ||
| JPS6116565U (en) | electronic copy machine | |
| JPS61162873U (en) | ||
| JPS5987062U (en) | magnetic brush developing device | |
| JPS63118055U (en) | ||
| JPH0329961U (en) | ||
| JPS63198063U (en) | ||
| JPS63162364U (en) | ||
| JPH036647U (en) | ||
| JPS6339250U (en) | ||
| JPS6394461U (en) | ||
| JPS6449861U (en) | ||
| JPS6314268U (en) |