JPH056325B2 - - Google Patents
Info
- Publication number
- JPH056325B2 JPH056325B2 JP31554590A JP31554590A JPH056325B2 JP H056325 B2 JPH056325 B2 JP H056325B2 JP 31554590 A JP31554590 A JP 31554590A JP 31554590 A JP31554590 A JP 31554590A JP H056325 B2 JPH056325 B2 JP H056325B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- roll
- yoke
- hollow pipe
- unit magnet
- 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 - Fee Related
Links
- 239000006247 magnetic powder Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 description 9
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はロール表面に磁性体粉末を吸着するた
めの磁気ロールに係わり、更に詳しくは磁気ロー
ル表面の磁力にむらがなく、よつてロール表面２
に磁性体粉末を均一に吸着することができる磁気
ロールに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic roll for adsorbing magnetic powder onto the roll surface, and more specifically, the present invention relates to a magnetic roll for adsorbing magnetic powder on the roll surface, and more specifically, the present invention relates to a magnetic roll for adsorbing magnetic powder on the roll surface. 2
The present invention relates to a magnetic roll capable of uniformly adsorbing magnetic powder.
〔従来の技術〕
周知の通り、コピー機等ではそこに用いられる
トナー等の磁性体粉末をその表面に磁気吸着する
為に比較的長さの長い（300〜400mm程度）磁気ロ
ールが用いられている。そして上記磁気ロールと
して考えられるものとして、磁性材料の粉末をロ
ール状に成形し、それを真空炉等で焼結して得ら
れる一体成形ものの磁気ロールが考えられるが、
その製造コストは高く、しかも一体成形ものであ
る為、汎用性に欠け、いろいろな長さや太さに応
ずることができず経済性が低いものであり、一体
成形ものであることによる利点即ちロール表面に
於ける磁力の均一性等を考慮しても実用に耐え得
るものではなかつた。そこで従来は、第９図に示
した様に比較的長さの短い円筒形の磁石１３を横
に並べ、それらを所用の長さに接着し、磁気ロー
ル１１として用いるものが考慮されている。[Prior Art] As is well known, copy machines use relatively long magnetic rolls (about 300 to 400 mm) to magnetically attract magnetic powder such as toner to the surface of the copy machines. There is. A possible example of the above-mentioned magnetic roll is an integrally formed magnetic roll obtained by molding magnetic material powder into a roll shape and sintering it in a vacuum furnace or the like.
The manufacturing cost is high, and since it is integrally molded, it lacks versatility and cannot be made into various lengths and thicknesses, making it less economical. Even when considering the uniformity of magnetic force in the magnetic field, it was not practical. Conventionally, as shown in FIG. 9, cylindrical magnets 13 having relatively short lengths are arranged side by side and then glued to a desired length to be used as a magnetic roll 11.
上記従来の技術の磁気ロールは第９図に示され
る様に、比較的長さの短い円筒形の磁石１３を横
に並べ、それらを所用の長さに接着し磁気ロール
１１を形成しているものであるが、その磁気ロー
ル表面１２の長手方向に於ける磁力の分布は第１
０図に示される様に、比較的長さの短い円筒形の
磁石１３の端部１４即ち接着面での磁力低下が見
られるものであり、全体として均一なものではな
く、よつて近来のコピー機のカラー化に伴う磁気
ロールの吸着性に対する要求（例えば、ロール表
面に於ける磁力の均一性や吸着の高速化の為の強
磁力化等）に対応することができないものであつ
た。
As shown in FIG. 9, the conventional magnetic roll described above has relatively short cylindrical magnets 13 arranged side by side and is glued to a desired length to form a magnetic roll 11. However, the distribution of magnetic force in the longitudinal direction of the magnetic roll surface 12 is the first
As shown in Figure 0, there is a decrease in the magnetic force at the end 14 of the relatively short cylindrical magnet 13, that is, at the adhesive surface, and the magnetic force is not uniform as a whole, and is therefore different from recent copies. It was not possible to meet the demands for magnetic roll adsorption properties (for example, uniformity of magnetic force on the roll surface, strong magnetic force for faster adsorption, etc.) accompanying the colorization of machines.
よつて本発明の目的とする所は、上述の如き従
来の技術の有する問題点を解決するものであつ
て、磁気ロールのロール表面に於ける磁力の分布
が均一であると共に、その磁力が強く磁性体粉末
の吸着性が良好となり、しかも、製造コストが低
く、汎用性が高い経済的な磁気ロールを提供する
ことにある。
Therefore, an object of the present invention is to solve the problems of the conventional technology as described above, and to provide a magnetic roll with a uniform distribution of magnetic force on the roll surface and a strong magnetic force. An object of the present invention is to provide an economical magnetic roll that has good adsorption properties for magnetic powder, has low manufacturing costs, and is highly versatile.
上記目的を達成する為に本発明は次の技術的手
段を有する。即ち実施例に対応する添付図面に使
用した符号を用いて説明すると、ロール表面２に
磁性体粉末を吸着する為の磁気ロール１に於い
て、
上記磁気ロール１は非磁性体金属より成る中空
パイプ３の内面に配されたヨーク６と、このヨー
クの背後に配された単位磁石群５より成り、上記
単位磁石群５は非磁性体金属より成る中空パイプ
３及びヨーク６の長手方向に沿つて単位磁石４を
横並びに配列して成るものであり、上記複数の単
位磁石群５から生ずる磁力線によつてロール表面
２に磁性体粉末を吸着可能と成したことを特徴と
する磁気ロールである。
In order to achieve the above object, the present invention has the following technical means. That is, to explain using the reference numerals used in the attached drawings corresponding to the embodiments, in the magnetic roll 1 for adsorbing magnetic powder onto the roll surface 2, the magnetic roll 1 is a hollow pipe made of non-magnetic metal. It consists of a yoke 6 arranged on the inner surface of the pipe 3 and a unit magnet group 5 arranged behind the yoke, and the unit magnet group 5 is arranged along the longitudinal direction of the hollow pipe 3 made of non-magnetic metal and the yoke 6. This magnetic roll is made up of unit magnets 4 arranged side by side, and is characterized in that magnetic powder can be attracted to the roll surface 2 by magnetic lines of force generated from the plurality of unit magnet groups 5.
以上の構成によると単位磁石４を横並びに配列
した単位磁石群５を、非磁性体金属より成る中空
パイプ３の内面のヨーク６の背後に配し、それら
の磁力線によつてヨーク６を磁化するものである
ので、たとえ不連続体である単位磁石群５の磁力
が不均一な分布をしていたとしても、連続体であ
るヨーク６によつてその不均一さが緩和されるの
で、ロール表面２に於ける磁力の分布は均一なも
のとなり、磁性体粉末をロール表面２に均一に吸
着できるものである。
According to the above configuration, the unit magnet group 5 in which the unit magnets 4 are arranged side by side is arranged behind the yoke 6 on the inner surface of the hollow pipe 3 made of non-magnetic metal, and the yoke 6 is magnetized by these lines of magnetic force. Therefore, even if the magnetic force of the unit magnet group 5, which is a discontinuous body, has a non-uniform distribution, the non-uniformity is alleviated by the yoke 6, which is a continuous body, so that the roll surface The distribution of the magnetic force on the roll 2 becomes uniform, and the magnetic powder can be uniformly attracted to the roll surface 2.
以下、本発明の実施例を添付図面第１図〜第８
図に基づき詳細に説明する。
Embodiments of the present invention will be described below with reference to FIGS. 1 to 8 of the accompanying drawings.
This will be explained in detail based on the figures.
本発明の実施例の磁気ロール１は、非磁性体金
属より成る中空パイプ３とその内面に配されたヨ
ーク６と複数の単位磁石４の群５より成るもので
ありその第１実施例を第１図〜第４図に示す。第
１図〜第３図に示した様に磁気ロール１は、非磁
性体金属より成る中空パイプ３の内面にヨーク６
を配設すると共にそのヨーク６の背面に単位磁石
４より成る単位磁石群５を配したものである。 A magnetic roll 1 according to an embodiment of the present invention is composed of a hollow pipe 3 made of non-magnetic metal, a yoke 6 arranged on the inner surface of the pipe, and a group 5 of a plurality of unit magnets 4. Shown in Figures 1 to 4. As shown in FIGS. 1 to 3, the magnetic roll 1 has a yoke 6 on the inner surface of a hollow pipe 3 made of non-magnetic metal.
A unit magnet group 5 made up of unit magnets 4 is arranged on the back side of the yoke 6.
上記単位磁石群５は、上記非磁性体金属より成
る中空パイプ３及びヨーク６の長手方向に沿つて
単位磁石４を横並びに配列したものであつて、単
位磁石４各々の接続面は接着剤で接着され、位置
ズレ等が防止されている。 The unit magnet group 5 has unit magnets 4 arranged side by side along the longitudinal direction of the hollow pipe 3 and yoke 6 made of the non-magnetic metal, and the connecting surfaces of each unit magnet 4 are bonded with adhesive. It is glued to prevent misalignment.
この場合、単位磁石４の極性の方向は第３図示
のようにＮ極又はＳ極が中空パイプ３の周方向に
向くように、従つて他方のＳ極又はＮ極が中空パ
イプ３の中心方向に向くように配置される。この
第３図の一例では単位磁石４のＮ極が周方向に、
他方のＳ極が中心方向に位置した例を示してあ
る。そして単位磁石群５を構成する各単位磁石４
は各々同じように配列される。 In this case, the polarity direction of the unit magnet 4 is such that the N pole or S pole faces in the circumferential direction of the hollow pipe 3 as shown in the third diagram, and therefore the other S pole or N pole faces in the center direction of the hollow pipe 3. placed so as to face. In this example of FIG. 3, the N pole of the unit magnet 4 is arranged in the circumferential direction.
An example is shown in which the other S pole is located toward the center. Each unit magnet 4 constituting the unit magnet group 5
are arranged in the same way.
而して、上記中空部分のすき間にプラスチツク
等の樹脂を封入し、単位磁石群５の位置を固定し
てもよい。そして上記によつて形成された磁気ロ
ール１は、単位磁石群５の磁力線によつてヨーク
６を磁化することによりロール表面２に於ける磁
性体粉末の吸着力を得るものである。このように
すると単位磁石４どうしの接続面で磁力低下を伴
うことから生ずる単位磁石群５の長手方向の磁力
分布の不均一を、つなぎ目のないヨーク６が緩和
し、ロール表面２では第４図に示したような均一
な磁力分布となるものである。よつて磁気ロール
１のロール表面２に於ける磁性体粉末の吸着が均
一に実施される磁気ロール１を形成できるもので
ある。 Therefore, the position of the unit magnet group 5 may be fixed by filling a resin such as plastic into the gap in the hollow portion. The magnetic roll 1 formed as described above obtains an adsorption force for the magnetic powder on the roll surface 2 by magnetizing the yoke 6 by the magnetic lines of force of the unit magnet group 5. In this way, the seamless yoke 6 alleviates the uneven distribution of magnetic force in the longitudinal direction of the unit magnet group 5, which is caused by a decrease in magnetic force at the connecting surfaces of the unit magnets 4. This results in a uniform magnetic force distribution as shown in . Therefore, it is possible to form a magnetic roll 1 in which the magnetic powder is uniformly adsorbed on the roll surface 2 of the magnetic roll 1.
次に添付図面第５図、第６図に第２の実施例を
示す。この例は磁気ロール１の表面２の一方と他
方にＮ極又はＳ極、Ｓ極又はＮ極を形成した例で
ある。即ち２極以上、多極にする場合の例であ
る。第５図のように非磁性金属より成る中空パイ
プ３の内面に180度の間隔を置いて２つのヨーク
６を接着する。その各々のヨーク６の背面に単位
磁石４を横並びに配列して単位磁石群５とする。
この場合、一方のヨーク６の背面の単位磁石４の
極性の向と、他方のヨーク６の背面の単位磁石４
の極性の向を相互に反対とする。この例の場合
も、実施例１と同様、表面２の磁力分布が均一と
なる。 Next, a second embodiment is shown in FIGS. 5 and 6 of the accompanying drawings. In this example, a north pole or a south pole, or a south pole or a north pole is formed on one side and the other side of the surface 2 of the magnetic roll 1. That is, this is an example of a case where there are two or more poles or multiple poles. As shown in FIG. 5, two yokes 6 are bonded to the inner surface of a hollow pipe 3 made of non-magnetic metal at an interval of 180 degrees. On the back surface of each yoke 6, unit magnets 4 are arranged side by side to form a unit magnet group 5.
In this case, the polarity direction of the unit magnet 4 on the back surface of one yoke 6 and the polarity direction of the unit magnet 4 on the back surface of the other yoke 6
The directions of the polarities are opposite to each other. In this example, as in Example 1, the magnetic force distribution on the surface 2 is uniform.
続いて添付図面第７図、第８図に第３の実施例
を示す。この例は、ヨーク６の背面に横並びに配
置する単位磁石４の群５を２層にした場合の例で
ある。即ち一方、他方のヨーク６各々の背面に一
層目の単位磁石群５を配列し、その背後に二層目
の単位磁石群５を配列する。このように多層化す
ると単位磁石４同志の接続面の磁力特性変化の挙
動をより打消し、各ヨーク６での磁力特性はより
均一となる。 Next, a third embodiment is shown in FIGS. 7 and 8 of the accompanying drawings. This example is an example in which the group 5 of unit magnets 4 arranged side by side on the back surface of the yoke 6 has two layers. That is, the first layer unit magnet group 5 is arranged on the back side of each of the other yokes 6, and the second layer unit magnet group 5 is arranged behind it. When multi-layered in this way, the behavior of changes in the magnetic force characteristics of the connecting surfaces of the unit magnets 4 is further canceled out, and the magnetic force characteristics in each yoke 6 become more uniform.
以上詳述した如く、本発明によると次の様な効
果を奏する。即ち請求項第１項によると、磁気ロ
ールのロール表面に於ける磁力の分布は連続体で
あるヨークによつて均一なものとされるので、磁
性体粉末を均一に吸着できるものである。
As detailed above, the present invention provides the following effects. That is, according to claim 1, the distribution of magnetic force on the roll surface of the magnetic roll is made uniform by the yoke, which is a continuous body, so that the magnetic powder can be uniformly attracted.
請求項第２項によると上記利点を有する多極の
磁気ロールを形成できる。 According to claim 2, a multipolar magnetic roll having the above advantages can be formed.
請求項第３項によると、多層化するのでより表
面の磁力分布を均一にできる磁気ロールを形成で
きる。 According to the third aspect, since the magnetic roll is multi-layered, it is possible to form a magnetic roll that can make the distribution of magnetic force on the surface more uniform.
添付図面は本発明の実施例を示し、第１図〜第
４図は第１の実施例であり、第１図は斜視図、第
２図は第１図のＸ−X′線に沿う断面図、第３図
は第２図のＹ−Y′線に沿う断面図、第４図は磁
気ロールの長手方向の磁力の強さを示す分布図、
第５図、第６図は第２の実施例を示し、第５図は
横断面図、第６図は縦断面図、第７図、第８図は
第３の実施例を示し、第７図は縦断面図、第８図
は横断面図である。続いて第９図、第１０図は従
来例を示し、第９図は側面図、第１０図は従来の
磁気ロールの長手方向の磁力の強さを示す分布図
である。
The accompanying drawings show embodiments of the present invention, and FIGS. 1 to 4 show the first embodiment, with FIG. 1 being a perspective view and FIG. 2 being a cross-section taken along line X-X' in FIG. 1. Figure 3 is a sectional view along the Y-Y' line in Figure 2, Figure 4 is a distribution diagram showing the strength of magnetic force in the longitudinal direction of the magnetic roll,
5 and 6 show the second embodiment, FIG. 5 is a cross-sectional view, FIG. 6 is a longitudinal sectional view, FIGS. The figure is a longitudinal cross-sectional view, and FIG. 8 is a cross-sectional view. Next, FIGS. 9 and 10 show a conventional example, where FIG. 9 is a side view and FIG. 10 is a distribution diagram showing the strength of magnetic force in the longitudinal direction of a conventional magnetic roll.
Claims (1)
気ロール１に於いて、 上記磁気ロール１は非磁性体金属より成る中空
パイプ３と、中空パイプ３の内面に配されたヨー
ク６と、このヨーク６の背後に配された単位磁石
群５より成り、上記単位磁石群５はヨーク６の長
手方向に沿つて単位磁石４を横並びに配列して成
るものであり、上記単位磁石群５から生ずる磁力
線によつてヨーク６が磁化されもつてロール表面
２に磁性体粉末を吸着可能と成したことを特徴と
する磁気ロール。 ２ 上記非磁性体金属より成る中空パイプ３の内
面に配されるヨーク６及び単位磁石群５は、ロー
ル表面２に多数の極を有する様に配されているこ
とを特徴とする請求項第１項記載の磁気ロール。 ３ 上記非磁性体金属より成る中空パイプ３の内
面に配されるヨーク６の背後の複数の単位磁石群
５はヨーク６の背後に多層に配列されて成る請求
項第１項又は第２項記載の磁気ロール。[Claims] 1. In a magnetic roll 1 for adsorbing magnetic powder onto a roll surface 2, the magnetic roll 1 has a hollow pipe 3 made of non-magnetic metal, and a hollow pipe 3 arranged on the inner surface of the hollow pipe 3. The unit magnet group 5 is made up of unit magnets 4 arranged side by side along the longitudinal direction of the yoke 6. A magnetic roll characterized in that a yoke 6 is magnetized by lines of magnetic force generated from a unit magnet group 5 so that magnetic powder can be attracted to the roll surface 2. 2. Claim 1, wherein the yoke 6 and the unit magnet group 5 arranged on the inner surface of the hollow pipe 3 made of non-magnetic metal are arranged so as to have a large number of poles on the roll surface 2. Magnetic roll as described in section. 3. According to claim 1 or 2, wherein the plurality of unit magnet groups 5 behind the yoke 6 disposed on the inner surface of the hollow pipe 3 made of non-magnetic metal are arranged in multiple layers behind the yoke 6. magnetic roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31554590A JPH04186704A (en) | 1990-11-20 | 1990-11-20 | Magnetic roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31554590A JPH04186704A (en) | 1990-11-20 | 1990-11-20 | Magnetic roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04186704A JPH04186704A (en) | 1992-07-03 |
| JPH056325B2 true JPH056325B2 (en) | 1993-01-26 |
Family
ID=18066635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31554590A Granted JPH04186704A (en) | 1990-11-20 | 1990-11-20 | Magnetic roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04186704A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008075616A1 (en) * | 2006-12-20 | 2008-06-26 | Sagami Chemical Metal Co., Ltd. | Running gear utilizing permanent magnet |
| JP5550885B2 (en) * | 2009-11-12 | 2014-07-16 | 高橋 謙三 | Melting furnace system |
-
1990
- 1990-11-20 JP JP31554590A patent/JPH04186704A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04186704A (en) | 1992-07-03 |
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| JPS6285404A (en) | Cylindrical multipolar magnet structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |