JPS609799Y2 - Magnet roll for electrostatic recording - Google Patents
Magnet roll for electrostatic recordingInfo
- Publication number
- JPS609799Y2 JPS609799Y2 JP835179U JP835179U JPS609799Y2 JP S609799 Y2 JPS609799 Y2 JP S609799Y2 JP 835179 U JP835179 U JP 835179U JP 835179 U JP835179 U JP 835179U JP S609799 Y2 JPS609799 Y2 JP S609799Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- electrostatic recording
- permanent magnet
- roll
- magnet roll
- 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.)
- Expired
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
【考案の詳細な説明】
本考案は電子写真式複写機、ファクシミリ、プリンター
などに使用される静電記録用磁石ロールに関する。[Detailed Description of the Invention] The present invention relates to an electrostatic recording magnet roll used in electrophotographic copying machines, facsimile machines, printers, etc.
従来一般に使用されている磁気ブラシ現像法においては
、帯電、露光の過程を経た静電潜像を有する感光紙ある
いは感光ドラムを現像する際に、表面に複数個の磁極を
有する磁石ロールを回転して、磁石ロール表面にブラシ
状に付着した現像剤によって前記静電潜像を摺擦して現
像するものである。In the conventionally commonly used magnetic brush development method, when developing photosensitive paper or a photosensitive drum that has an electrostatic latent image that has undergone the process of charging and exposure, a magnetic roll having multiple magnetic poles on its surface is rotated. The electrostatic latent image is developed by rubbing the electrostatic latent image with a developer attached in the form of a brush on the surface of the magnet roll.
この磁石ロールとしては、通常円柱状の永久磁石を軸に
固着したものあるいは複数個のブロック磁石を連結して
軸に固着したものが用いられている。As this magnet roll, one in which a cylindrical permanent magnet is usually fixed to a shaft, or one in which a plurality of block magnets are connected and fixed to a shaft is used.
近年これらの永久磁石ロールの軽量化、低コスト化が望
まれている。In recent years, it has been desired to reduce the weight and cost of these permanent magnet rolls.
本考案の目的は、軽量でしかも安価な静電記録用磁石ロ
ールを提供することである。An object of the present invention is to provide a lightweight and inexpensive magnet roll for electrostatic recording.
本考案の静電記録用磁石ロールは、円周方向に沿って複
数個の段部を有しかつ外周面の一部を円孤状に切欠いた
略円板状の一対の磁石保持部材を所定間隔をおいて対向
させ、前記段部の各々にブロック状永久磁石の端部を嵌
装すると共に、前記磁石保持部材の各々に軸を突設し、
かつ外周面に非磁性材料からなるシートを被着せしめて
永久磁石部材を形威し、この永久磁石部材を非磁性円筒
内に互いに相対回転しうるように配置したものである。The electrostatic recording magnet roll of the present invention has a pair of approximately disk-shaped magnet holding members that have a plurality of steps along the circumference and have a circular arc-shaped notch in a part of the outer circumferential surface. facing each other at intervals, fitting an end portion of a block-shaped permanent magnet into each of the step portions, and protruding a shaft from each of the magnet holding members;
A sheet made of a non-magnetic material is applied to the outer peripheral surface to form a permanent magnet member, and the permanent magnet members are arranged in a non-magnetic cylinder so as to be able to rotate relative to each other.
本考案の磁石ロールの詳細を一実施例を示す図面により
説明する。The details of the magnet roll of the present invention will be explained with reference to the drawings showing one embodiment.
第１図は本考案の磁石ロールの一部断面図にて表わした
正面図、そして第２図はＡ−Ａ断面図である。FIG. 1 is a partially sectional front view of the magnet roll of the present invention, and FIG. 2 is a sectional view taken along line A-A.
これらの図において、１ａ、１ｂ７６びＩＣはフェライ
トマグネット、ゴムマグネット、希土類磁石などの永久
磁石であり、共に軸方向に伸びるＮ極とＳ極を着磁をし
たものである。In these figures, 1a, 1b 76 and IC are permanent magnets such as ferrite magnets, rubber magnets, rare earth magnets, etc., and are magnetized with N and S poles extending in the axial direction.
２および２′は金属製の磁石保持部材で、その一部を折
曲げてそれぞれ段部２ａおよび２’ａを形成したもので
、該段部に前記永久磁石の端部を固着している。Reference numerals 2 and 2' designate metal magnet holding members, a portion of which is bent to form stepped portions 2a and 2'a, respectively, to which the ends of the permanent magnets are fixed.
なお２ｂおよび２’ｂは軸でそれぞれ磁石保持部材２お
よび２′に圧入されている。Note that 2b and 2'b are shafts that are press-fitted into the magnet holding members 2 and 2', respectively.
また２Ｃおよび２’ｃはそれぞれ磁石保持部材２および
２′の一部を円孤状に切欠いて形成した平坦部であり、
磁石ロールの組立の際の基準面となる。Further, 2C and 2'c are flat parts formed by cutting out a part of the magnet holding members 2 and 2', respectively, in a circular arc shape.
This serves as a reference surface when assembling the magnet roll.
すなわちこの平坦部があることにより、組立を極めて容
易にかつ精度よく行なうことができる。In other words, the presence of this flat portion allows assembly to be performed extremely easily and with high precision.
よって磁石保持部材２および２′を所定間隔をおいて対
向させついで永久磁石１ａ、ｌｂおよび１ｃの端部を段
部に載置して接着剤等によって固定すれば容易に組立て
られる。Therefore, it can be easily assembled by arranging the magnet holding members 2 and 2' to face each other at a predetermined interval, and then placing the ends of the permanent magnets 1a, lb, and 1c on the steps and fixing them with adhesive or the like.
なお組立後、磁石の外周にポリエステルフィルム３など
の非磁性材料からなるシートを密着させてもよく（具体
的には周知の絶縁スリーブに用いられる如くのポリエス
テルチューブで全体を覆ってかつ加熱して該チューブを
収縮させれば−よい）、このことによって磁石ロールの
強度をより高めることができる。After assembly, a sheet made of a non-magnetic material such as a polyester film 3 may be tightly attached to the outer circumference of the magnet (specifically, the entire magnet may be covered with a polyester tube such as that used in a well-known insulating sleeve and heated. This can further increase the strength of the magnet roll.
次に４はアルミニウム、ステンレス等の非磁性材料より
なる円筒であり、前記の永久磁石の外方にわずかな間隔
を介して配設し、端部には側板５および５′を固着し、
かつ軸受６および６′により、軸２ｂおよび２’ｂに回
転自在に装着する。Next, numeral 4 is a cylinder made of a non-magnetic material such as aluminum or stainless steel, which is placed outside the permanent magnet at a slight interval, and side plates 5 and 5' are fixed to the ends.
It is rotatably mounted on the shafts 2b and 2'b by bearings 6 and 6'.
なお、上記においては磁石保持部材を金属製としたが、
これに限らす合成樹脂製でもよい。In addition, although the magnet holding member was made of metal in the above,
However, it may be made of synthetic resin.
また磁石保持部材の一部を折曲げる代りに磁石保持部材
に溝を形成してこれを段部としてもよい。Further, instead of bending a part of the magnet holding member, a groove may be formed in the magnet holding member and this groove may be used as a stepped portion.
以上記述の如く、本考案の静電記録用磁石ロールは、従
来のものに比べて磁石ロールの内部が中空となっており
、よって軽量化が可能である。As described above, the electrostatic recording magnet roll of the present invention has a hollow interior compared to conventional magnet rolls, and therefore can be lighter in weight.
また磁石固定用の軸の代りにシンプルな保持部材を用い
るので安価に製作することができる。Furthermore, since a simple holding member is used instead of the shaft for fixing the magnet, it can be manufactured at low cost.
第１図は本考案の磁石ロールの一部断面図で表わす正面
図、そして第２図は第１図のＡ−Ａ断面図である。
１ａ＝ ｔｂ、ｌｃ：磁石、２．２’：磁石保持部材
、２ａ、２’ａ：段部、２ｂ、２’ｂ：軸、２ｃ、２’
ｃ：平坦部。FIG. 1 is a partially sectional front view of the magnet roll of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. 1a = tb, lc: magnet, 2.2': magnet holding member, 2a, 2'a: step, 2b, 2'b: shaft, 2c, 2'
c: flat area.
Claims (1)
を外周面に固設した永久磁石部材を配置腰前記永久磁石
部材を前記非磁性円筒に相対回転可能に支承した静電記
録用磁石ロールにおいて、円周方向に沿って複数個の段
部を有しかつ外周面の一部を円孤状に切欠いた略円板状
の一対の磁石保持部材を所定間隔をおいて対向させ、前
記段部の各々に前記ブロック状永久磁石の端部を嵌装す
ると共に、前記磁石保持部材の各々に軸を突設し、かつ
外周面に非磁性材料からなるシートを被着せしめて前記
永久磁石部材を形威したことを特徴とする静電記録用磁
石ロール。 ２ 磁石保持部材を金属板で形威し、その一部を折曲げ
て段部を形威したことを特徴とする実用新案登録請求の
範囲第１項記載の静電記録用磁石ロール。 ３ 磁石保持部材に溝を設けて段部としたことを特徴と
する実用新案登録請求の範囲第１項記載の静電記録用磁
石ロール。[Claims for Utility Model Registration] ■ A permanent magnet member having a plurality of block-shaped permanent magnets fixed to the outer peripheral surface is arranged inside a non-magnetic cylinder, and the permanent magnet member is rotatable relative to the non-magnetic cylinder. In the supported electrostatic recording magnet roll, a pair of substantially disk-shaped magnet holding members having a plurality of steps along the circumferential direction and having a part of the outer circumferential surface cut out in the shape of an arc are placed at a predetermined interval. an end portion of the block-shaped permanent magnet is fitted into each of the step portions, a shaft is provided protruding from each of the magnet holding members, and a sheet made of a non-magnetic material is provided on the outer peripheral surface. 1. A magnet roll for electrostatic recording, characterized in that the permanent magnet member is formed by adhering the permanent magnet member. 2. The magnet roll for electrostatic recording according to claim 1, wherein the magnet holding member is formed of a metal plate, and a stepped portion is formed by bending a part of the metal plate. 3. The magnet roll for electrostatic recording according to claim 1, wherein the magnet holding member is provided with grooves to form stepped portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP835179U JPS609799Y2 (en) | 1979-01-26 | 1979-01-26 | Magnet roll for electrostatic recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP835179U JPS609799Y2 (en) | 1979-01-26 | 1979-01-26 | Magnet roll for electrostatic recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55108449U JPS55108449U (en) | 1980-07-29 |
| JPS609799Y2 true JPS609799Y2 (en) | 1985-04-05 |
Family
ID=28817261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP835179U Expired JPS609799Y2 (en) | 1979-01-26 | 1979-01-26 | Magnet roll for electrostatic recording |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609799Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6138663U (en) * | 1984-08-13 | 1986-03-11 | 住友特殊金属株式会社 | Permanent magnet roll for electrostatic development |
-
1979
- 1979-01-26 JP JP835179U patent/JPS609799Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55108449U (en) | 1980-07-29 |
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