JPS61163U - dry developing device - Google Patents
dry developing deviceInfo
- Publication number
- JPS61163U JPS61163U JP8408284U JP8408284U JPS61163U JP S61163 U JPS61163 U JP S61163U JP 8408284 U JP8408284 U JP 8408284U JP 8408284 U JP8408284 U JP 8408284U JP S61163 U JPS61163 U JP S61163U
- Authority
- JP
- Japan
- Prior art keywords
- developing sleeve
- magnet
- photoreceptor
- developer
- circumferential surface
- 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.)
- Granted
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案実施例の乾式現像装置のシール部材や現
像スリーブやブグネット等の位置関係を示す図、第２図
は第１図のＹ−Ｙ線に沿う断面図、第３図は従来例およ
び本考案実施例を説明するのに用いた乾式現像装置の断
面図、第４図は従来の乾式現像装置のシール部材や現像
スリーブやマグネット等の位置関係を示す図、第５図は
上記シニル部材の介設状態を示す図、第６図は第４図の
Ｘ−Ｘ線に沿う断面図である。
１・・・・・・感光体、２・・・・・・現像スリーブ、
３・・曲マグネット、５・・・・・・側板、２１・・曲
シール部材、２１ａ・・・・・・段部、２１ｂ・・・・
・・内側端。Fig. 1 is a diagram showing the positional relationship of the sealing member, developing sleeve, bagnet, etc. of a dry developing device according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the Y-Y line in Fig. 1, and Fig. 3 is a conventional one. FIG. 4 is a cross-sectional view of a dry developing device used to explain the examples and embodiments of the present invention, FIG. 4 is a diagram showing the positional relationship of the sealing member, developing sleeve, magnet, etc. of a conventional dry developing device, and FIG. FIG. 6 is a sectional view taken along the line X--X in FIG. 4, showing the interposed state of the thin member. 1...Photoreceptor, 2...Developing sleeve,
3...Curved magnet, 5...Side plate, 21...Curved seal member, 21a...Step part, 21b...
・Inner edge.
Claims (1)
、 前記現像スリーブの内部に設けられ、現像スリーブ周面
にこの軸方向に２成分の現像剤を磁気的に付着担持せし
めるマグネットと、 前記現像スリーブを回転自在に支持する側板と、 前記側板に固定的に取付けられ、かつ、現像スリーブの
両端側周面と、感光体の非画像形成部との間に介設され
、感光体と現像スＩＪ−ブとの間で現像スリーブの両端
側に形成せられる開口を閉塞する一対のシール部材とを
備え、 前記シール部材の内側端の中途部に段部を形成し、該段
部を、感光体と現像スリーブとの最近接位置よりも、現
像スリーブの回転方向に対する上流側位置に設け、かつ
、この段部を上流側につき、巾広部とする段部となした
上、巾広部の内側端を、マグネ−ットの軸方向の長さよ
りも長い巾の、現像スリーブ上の現像剤付着部の端部と
、前記マグネットの長さより短い巾の、画像形成に寄与
する現像剤付着領域の端部との間に設定することを特徴
とする乾式現像装置。[Claims for Utility Model Registration] A developing sleeve disposed close to and facing the circumferential surface of a photoconductor, and a two-component developer provided inside the developing sleeve that magnetically applies two-component developer to the circumferential surface of the developing sleeve in the axial direction. a side plate that rotatably supports the developing sleeve; and a magnet that is fixedly attached to the side plate and is located between the circumferential surface of both ends of the developing sleeve and the non-image forming portion of the photoreceptor. a pair of sealing members interposed between the photoreceptor and the developing sleeve for closing openings formed at both ends of the developing sleeve, the sealing member having a stepped portion in the middle of the inner end thereof; and the stepped portion is provided at a position upstream in the rotational direction of the developing sleeve from the closest position between the photoreceptor and the developing sleeve, and the stepped portion is located on the upstream side and is a wide portion. In addition, the inner end of the wide part is connected to the end of the developer adhesion part on the developing sleeve, which has a width longer than the length of the magnet in the axial direction, and the end of the developer adhering part on the developing sleeve, which has a width shorter than the length of the magnet. , and an end of a developer adhesion area that contributes to image formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8408284U JPS61163U (en) | 1984-06-06 | 1984-06-06 | dry developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8408284U JPS61163U (en) | 1984-06-06 | 1984-06-06 | dry developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61163U true JPS61163U (en) | 1986-01-06 |
| JPH0310522Y2 JPH0310522Y2 (en) | 1991-03-15 |
Family
ID=30633280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8408284U Granted JPS61163U (en) | 1984-06-06 | 1984-06-06 | dry developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61163U (en) |
-
1984
- 1984-06-06 JP JP8408284U patent/JPS61163U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0310522Y2 (en) | 1991-03-15 |
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