JPH021760U - - Google Patents
Info
- Publication number
- JPH021760U JPH021760U JP7911588U JP7911588U JPH021760U JP H021760 U JPH021760 U JP H021760U JP 7911588 U JP7911588 U JP 7911588U JP 7911588 U JP7911588 U JP 7911588U JP H021760 U JPH021760 U JP H021760U
- Authority
- JP
- Japan
- Prior art keywords
- developing roller
- developer
- hopper
- magnetic powder
- latent image
- 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
- 239000006247 magnetic powder Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 229920002799 BoPET Polymers 0.000 description 2
- 239000005041 Mylar™ Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241000207439 Myra Species 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図および第２図は本考案の一実施例を示す
もので、第１図は横断面図、第２図は第１図の
―線断面図である。第３図〜第５図は本考案の
変形例を示すもので、第３図は現像ローラの周面
とマイラの内周面との隙間がブレード側が狭くな
るようにマイラを貼着した状態を示す図、第４図
はホツパに鍔部を一体形成した状態を示す図、第
５図は現像ローラに段部を形成した状態を示す図
である。第６図は電子写真装置の概略構成を示す
図、第７図は第６図の―線断面図、第８図は
従来の問題点を説明するための図である。
１……感光体ドラム（静電潜像担持体）、４…
…現像ローラ、５……磁性粉体現像剤、１１……
開口部、１２……ホツパ、１４……現像ローラ、
１５……ブレード、３１……シール部材、４１…
…マイラ（覆部）、５１……鍔（覆部）、６１…
…段部（覆部）。
FIGS. 1 and 2 show an embodiment of the present invention, with FIG. 1 being a cross-sectional view and FIG. 2 being a sectional view taken along the line -- in FIG. Figures 3 to 5 show modified examples of the present invention, and Figure 3 shows a state in which Mylar is attached so that the gap between the peripheral surface of the developing roller and the inner peripheral surface of Mylar is narrower on the blade side. FIG. 4 shows a state in which a flange is integrally formed on the hopper, and FIG. 5 shows a state in which a stepped portion is formed in the developing roller. FIG. 6 is a diagram showing a schematic configuration of an electrophotographic apparatus, FIG. 7 is a sectional view taken along the line -- in FIG. 6, and FIG. 8 is a diagram for explaining the problems of the conventional apparatus. 1... Photosensitive drum (electrostatic latent image carrier), 4...
...Developing roller, 5...Magnetic powder developer, 11...
opening, 12... hopper, 14... developing roller,
15...Blade, 31...Seal member, 41...
...Myra (Oube), 51...Tsuba (Oube), 61...
...Danbe (covered part).
Claims (1)
持体と対向する位置に開口部を有するホツパと、
このホツパの開口部に前記静電潜像担持体に対向
して回転自在に配置され前記磁性粉体現像剤を磁
気的に担持する現像ローラと、この現像ローラの
表面に担持された磁性粉体現像剤の厚みを規制す
るブレードと、前記ホツパの前記現像ローラの各
端部分と対応する位置にその現像ローラの周方向
に接して設けられたシール部材とを含む電子写真
装置の現像装置において、 前記シール部材の現像剤と接する面を覆う覆部
を設けた、 ことを特徴とする電子写真装置の現像装置。[Scope of Claim for Utility Model Registration] A hopper containing a magnetic powder developer therein and having an opening at a position facing the electrostatic latent image carrier;
A developing roller that is rotatably disposed in the opening of the hopper facing the electrostatic latent image carrier and magnetically supports the magnetic powder developer, and a magnetic powder supported on the surface of the developing roller. A developing device for an electrophotographic apparatus including a blade for regulating the thickness of the developer, and a sealing member provided in the hopper at a position corresponding to each end portion of the developing roller and in contact with the developing roller in the circumferential direction, A developing device for an electrophotographic apparatus, comprising: a covering portion that covers a surface of the sealing member that comes into contact with a developer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7911588U JPH021760U (en) | 1988-06-15 | 1988-06-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7911588U JPH021760U (en) | 1988-06-15 | 1988-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH021760U true JPH021760U (en) | 1990-01-08 |
Family
ID=31304002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7911588U Pending JPH021760U (en) | 1988-06-15 | 1988-06-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021760U (en) |
-
1988
- 1988-06-15 JP JP7911588U patent/JPH021760U/ja active Pending
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