JPS58199418A - Vertical magnetic recording head - Google Patents
Vertical magnetic recording headInfo
- Publication number
- JPS58199418A JPS58199418A JP8346282A JP8346282A JPS58199418A JP S58199418 A JPS58199418 A JP S58199418A JP 8346282 A JP8346282 A JP 8346282A JP 8346282 A JP8346282 A JP 8346282A JP S58199418 A JPS58199418 A JP S58199418A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- magnetic
- auxiliary
- pole
- main
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Abstract
Description
【発明の詳細な説明】
本発明は磁気記録媒体を厚み方向に磁化して信号を記録
する垂直磁気記録用磁気ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head for perpendicular magnetic recording that records signals by magnetizing a magnetic recording medium in the thickness direction.
従来、磁気記録はリング型ヘッドにょシ磁気記録媒体の
面内方向（水平方向）に磁化することが用いられていた
。しかし、この方式は高密度化するに従い記録媒体内の
反磁場が増大し高密度記録に限界があった。Conventionally, magnetic recording has been performed using a ring-shaped head that magnetizes a magnetic recording medium in the in-plane direction (horizontal direction). However, with this method, as the density increases, the demagnetizing field within the recording medium increases, which limits high-density recording.
これ一対し、よ）−密度記録に適している方式として、
−気記録媒体を垂直方向（厚み方向）に磁化する垂直磁
気記録方式（特開昭５２−１３’４７０６）が提案され
、さらに第１図に示す如く、この垂直磁気記録方式に適
用する磁気ヘッド（％開昭５３−’３２００９）が提ｉ
ｉれている。′すなわちこの種の磁気ヘッドは厚さ数μ
ｍ以下の磁性ｉ膜よシなる短冊型の主磁極１と、記録再
生コイル３を有する主磁極１よシはるかに大きな断面積
（例えば１００倍以上）を持つ補助磁極２′とを対向さ
□せ、その間を記録媒体４を主磁極１に沿って移動し、
コイルに記録電流を流し七−気記録誉行ならいわゆる補
助磁極励磁型磁気ヘッドそあシ、艷録分解能、記録効率
的に優れていることも確認されている。しかしながら磁
気記録媒体４の両画を使用する場合の磁′気ヘッドにお
いては磁気記録媒体４の補助磁極側の面６にすでに信号
が記録されている場合に主磁極側の面５に新たに信号を
記録すると補助磁極側の面６の信号が補助磁極からの磁
束によって乱されるという問題がちシ信号記録上重大な
欠陥となる。特に上記現象は第２図に示す如く、主磁極
１１のエツジと補助磁極１２のエツジが平行である場合
顕著に現われる。On the other hand, as a method suitable for density recording,
- A perpendicular magnetic recording method (Japanese Unexamined Patent Publication No. 52-13'4706) was proposed, in which a magnetic recording medium is magnetized in the perpendicular direction (thickness direction), and a magnetic head applied to this perpendicular magnetic recording method, as shown in Fig. 1, was proposed. (%Kasho 53-'32009) is proposed
I'm bored. 'In other words, this type of magnetic head is several microns thick.
A rectangular main magnetic pole 1 made of a magnetic i-film with a thickness of less than m and an auxiliary magnetic pole 2' having a much larger cross-sectional area (for example, 100 times or more) than the main magnetic pole 1 having a recording/reproducing coil 3 are placed facing each other. and move the recording medium 4 along the main magnetic pole 1 between them,
It has also been confirmed that if a recording current is passed through the coil for seven-way recording, the so-called auxiliary pole excitation type magnetic head has excellent recording resolution and recording efficiency. However, in a magnetic head that uses both sides of the magnetic recording medium 4, if a signal has already been recorded on the surface 6 on the auxiliary magnetic pole side of the magnetic recording medium 4, a new signal is recorded on the surface 5 on the main magnetic pole side. When recording, the signal on the surface 6 on the auxiliary magnetic pole side tends to be disturbed by the magnetic flux from the auxiliary magnetic pole, which is a serious defect in signal recording. Particularly, the above-mentioned phenomenon appears conspicuously when the edges of the main magnetic pole 11 and the edges of the auxiliary magnetic pole 12 are parallel, as shown in FIG.
第２図は主磁極、補助磁極の媒体に対する位置関係を補
助磁極側から見たものである。１４は媒体走行方向を示
す。FIG. 2 shows the positional relationship between the main magnetic pole and the auxiliary magnetic pole with respect to the medium, as viewed from the auxiliary magnetic pole side. 14 indicates the medium running direction.
本発明は補助磁極励磁型磁気ヘッドの欠点の原因が補助
磁極のかどばったエツジに於いて特に磁束の集中が起き
やすく、かつ主磁極と補助磁極のエツジが平行であると
いう点にあることに留意し、主磁極と補助磁極のエツジ
を非平行にすることによシ、前記欠点を解決した垂直磁
気記録用磁気ヘッドを提供するものである。The present invention takes into account that the disadvantages of the auxiliary pole-excited magnetic head are that magnetic flux is particularly likely to concentrate at the sharp edges of the auxiliary pole, and that the edges of the main pole and the auxiliary pole are parallel. However, the present invention provides a magnetic head for perpendicular magnetic recording in which the above-mentioned drawbacks are solved by making the edges of the main magnetic pole and the auxiliary magnetic pole non-parallel.
本発明によれば垂直磁気記録用磁気ヘッドの主磁極と補
助磁極のエツジを非平行にすることにより補助磁極によ
ってすでに記録された信号が乱されるという欠点を防止
するｉ電磁気記録用磁気ヘッドが得られる。According to the present invention, there is provided a magnetic head for electromagnetic recording, which prevents the drawback that signals already recorded by the auxiliary magnetic pole are disturbed by making the edges of the main magnetic pole and the auxiliary magnetic pole of the magnetic head for perpendicular magnetic recording non-parallel. can get.
次に本発明の一実施例について、図面を参照して説明す
る。Next, one embodiment of the present invention will be described with reference to the drawings.
第３図は主磁極、補助磁極の媒体に対する位置関係を補
助磁極側から見たものである０第３図において、本実施
例は厚さ数μｍの磁性薄膜からなる主磁極２１と、前記
主磁極２１に対向して設けられ、エツジを主磁極と非平
行とした主磁極よシはるかに大きな断面積を有する補助
磁極２２とを有する０磁気記録媒体２３は媒体走行方向
２４に移送するものとする。Figure 3 shows the positional relationship between the main magnetic pole and the auxiliary magnetic pole with respect to the medium, as seen from the auxiliary magnetic pole side. A magnetic recording medium 23 having an auxiliary magnetic pole 22 which is provided opposite to the magnetic pole 21 and whose edges are not parallel to the main magnetic pole and which has a much larger cross-sectional area than the main magnetic pole is transported in the medium running direction 24. do.
本実施例の記録ヘッドはすでに補助磁極側の面に信号が
記録されており、かつ、反対側の面に新たに信号を記録
する場合、補助磁極のエツジからの磁束によってすでに
記録された信号をたかだが一ケ所から数ケ所で横ぎるに
すぎなく、補助磁極からの磁束によって信号が乱される
ということはほとんどない。In the recording head of this embodiment, when a signal has already been recorded on the surface on the side of the auxiliary magnetic pole and a new signal is to be recorded on the surface on the opposite side, the already recorded signal is The magnetic flux from the auxiliary magnetic pole hardly ever disturbs the signal, as it only crosses at one or a few points.
第４図は本発明の他の実施例を示し、この実施例は補助
磁極のエツジどうしをもさらに非平行としたもので、前
記実施例と同様な効果が得られる。FIG. 4 shows another embodiment of the present invention, in which the edges of the auxiliary magnetic poles are also made non-parallel to each other, and the same effects as in the previous embodiment can be obtained.
以上説明したように本記録ヘッドは主磁極と、補助磁極
のエツジを非平行セすることにょ夛従来ヘッドが持って
いた補助磁極によって、すでに記録された信号が乱され
るという欠点を防止する垂直磁気記録ヘッドである。As explained above, this recording head uses a non-parallel arrangement of the edges of the main magnetic pole and the auxiliary magnetic pole to avoid the drawback that the auxiliary magnetic pole of conventional heads disturbs already recorded signals. It is a magnetic recording head.
本発明は以上説明したように主磁極と補助磁極のエツジ
を非平行にすることによフ補助磁極にょシ、すでに記録
された信号が乱されるという問題を解決できる効果があ
る。As explained above, the present invention has the effect of solving the problem that the auxiliary magnetic pole disturbs already recorded signals by making the edges of the main magnetic pole and the auxiliary magnetic pole non-parallel.
第１図は従来の垂直磁気ヘッドを示す図、第２図は従来
の垂直磁気ヘッドを補助磁極側から見た図、第３図およ
び第４図は主磁極、補助磁極のエツジを非平行とした垂
直磁気ヘッドを示す図である。
１．１１，２１．３１・・・・・・主磁極、２，１２，
２２．３２・・・・・・補助磁極、３・・・・・・記録
・再生コイル、４，１３゜２３．３３・・・・・・磁気
記録媒体、１４，２４．３４・・・・・・媒体走行方向
。
代理人 弁理士 内 原 晋
５−
第４図
−９７−Fig. 1 shows a conventional perpendicular magnetic head, Fig. 2 shows a conventional perpendicular magnetic head viewed from the auxiliary magnetic pole side, and Figs. 3 and 4 show the edges of the main magnetic pole and auxiliary magnetic pole with non-parallel edges. 2 is a diagram showing a perpendicular magnetic head made of 1.11, 21.31... Main magnetic pole, 2, 12,
22.32...Auxiliary magnetic pole, 3...Recording/reproducing coil, 4,13°23.33...Magnetic recording medium, 14,24.34... ...Media travel direction. Agent Patent Attorney Susumu Uchihara 5- Figure 4-97-
Claims (1)
線を施こした補助磁極を磁気記録媒体を挾んで対向配置
して、前記磁気記録媒体に情報を記録する垂直磁気記録
ヘッドにおいて、前記主磁極のエツジと補助磁極のエツ
ジを非平行としたことを特徴とする垂直磁気記録ヘッド
。In a perpendicular magnetic recording head that records information on a magnetic recording medium, a main magnetic pole made of a magnetic thin film and an auxiliary magnetic pole wound with a wire to excite the main magnetic pole are arranged opposite to each other with a magnetic recording medium sandwiched therebetween, A perpendicular magnetic recording head characterized in that an edge of the main magnetic pole and an edge of the auxiliary magnetic pole are non-parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8346282A JPS58199418A (en) | 1982-05-18 | 1982-05-18 | Vertical magnetic recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8346282A JPS58199418A (en) | 1982-05-18 | 1982-05-18 | Vertical magnetic recording head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58199418A true JPS58199418A (en) | 1983-11-19 |
Family
ID=13803126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8346282A Pending JPS58199418A (en) | 1982-05-18 | 1982-05-18 | Vertical magnetic recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58199418A (en) |
-
1982
- 1982-05-18 JP JP8346282A patent/JPS58199418A/en active Pending
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