JPS5943961U - developing device - Google Patents
developing deviceInfo
- Publication number
- JPS5943961U JPS5943961U JP13842682U JP13842682U JPS5943961U JP S5943961 U JPS5943961 U JP S5943961U JP 13842682 U JP13842682 U JP 13842682U JP 13842682 U JP13842682 U JP 13842682U JP S5943961 U JPS5943961 U JP S5943961U
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- developing device
- magnetic
- longitudinal direction
- effective length
- 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
Landscapes
- Developing For 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aは従来例を示す断面正面図、第1図すは同例を
示す断面側面図、第2図は同例の要部を示す断面正面図
、第3図は同例を示す斜視図、第4図は本考案の第1の
実施例を示す断面側面図、第5図は同例の要部を示す断
面正面図、第6図は同例を示す拡大正面図、第7図は本
考案の第2の実施例を示す斜視図、第8図は本考案の第
3の実施例を示す正面図である。Fig. 1a is a sectional front view showing a conventional example, Fig. 1 is a sectional side view showing the same example, Fig. 2 is a sectional front view showing main parts of the same example, and Fig. 3 is a perspective view showing the same example. 4 is a cross-sectional side view showing the first embodiment of the present invention, FIG. 5 is a cross-sectional front view showing the main parts of the same example, FIG. 6 is an enlarged front view showing the same example, and FIG. 8 is a perspective view showing a second embodiment of the present invention, and FIG. 8 is a front view showing a third embodiment of the present invention.
Claims (6)
れた磁石の回りをスリーブが回転して現像剤を前記像担
持面に吸着搬送し静電潜像を現像する現像装置において
、前記像担持面に最つも近接して対向する磁極よりもス
リーブの回転方向に対して上流に位置する少なくとも1
個の磁極の前記スリーブ表面に磁気力を及ぼす長手方向
の有効長が、その他の磁極のスリーブ表面に磁気力を及
ぼす長手力の有効長よりも短いことを特徴とする現像装
置。(1) A developing device in which a sleeve rotates around a magnet fixed opposite the image bearing surface on which the electrostatic latent image is formed, attracting and conveying developer to the image bearing surface to develop the electrostatic latent image. , at least one magnetic pole located upstream in the rotational direction of the sleeve from the magnetic pole facing closest to the image bearing surface.
A developing device characterized in that an effective length in a longitudinal direction of one of the magnetic poles that exerts a magnetic force on the sleeve surface is shorter than an effective length of a longitudinal force that exerts a magnetic force on the sleeve surface of the other magnetic poles.
手方向の有効長が短い磁極のその有効長が、スリーブ表
面における長手方向の有効現像幅よりも短いことを特徴
とする実用新案登録請求の範囲第1項記載の現像装置。(2) A request for registration of a utility model characterized in that the effective length of a magnetic pole that exerts a magnetic force on the sleeve surface is shorter than other magnetic poles in the longitudinal direction, and that the effective length is shorter than the effective development width in the longitudinal direction on the sleeve surface. The developing device according to item 1.
の有効長が、スリーブの回転方向の上流から下流にいく
に従って、順次長くなることを特徴とする実用新案登録
請求の範囲第1項記載の現像装置。(3) The effective length in the longitudinal direction of each magnetic pole that exerts magnetic force on the sleeve surface becomes longer from upstream to downstream in the rotational direction of the sleeve, as described in claim 1 of the utility model registration claim. developing device.
の磁極のスリーブ表面に磁気力を及ぼす長手方向の有効
長を変えることを特徴とする実用、 新案登録請求の範
囲第1項乃至第3項のいずれかに記載の現像装置。(4) A practical application characterized in that a magnetic shielding plate is provided between the magnet and the sleeve to change the effective length in the longitudinal direction of the magnetic pole of the magnet that exerts magnetic force on the sleeve surface. Developing device according to any one of Item 3.
たことを特徴とする実用新案登録請求の範 −囲第1項
乃至第3項のいずれかに記載の現像装置。(5) The developing device according to any one of claims 1 to 3, characterized in that a plurality of magnets having different lengths in the longitudinal direction are arranged and fixed.
り欠かれた円筒形の磁石を用いたことを特徴とする実用
新案登録請求の範囲第3項記載の現像装置。(6) The developing device according to claim 3, which is a utility model registration, characterized in that it uses a cylindrical magnet having a plurality of magnetic poles on its surface and having both ends cut out diagonally.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13842682U JPS5943961U (en) | 1982-09-14 | 1982-09-14 | developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13842682U JPS5943961U (en) | 1982-09-14 | 1982-09-14 | developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5943961U true JPS5943961U (en) | 1984-03-23 |
Family
ID=30310597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13842682U Pending JPS5943961U (en) | 1982-09-14 | 1982-09-14 | developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5943961U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4869522A (en) * | 1971-12-17 | 1973-09-21 | ||
JPS5689764A (en) * | 1979-11-05 | 1981-07-21 | Xerox Corp | Magnetic parts used in magneticcbrush developmenttdevice |
-
1982
- 1982-09-14 JP JP13842682U patent/JPS5943961U/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4869522A (en) * | 1971-12-17 | 1973-09-21 | ||
JPS5689764A (en) * | 1979-11-05 | 1981-07-21 | Xerox Corp | Magnetic parts used in magneticcbrush developmenttdevice |
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