JPS61242310A - Vertical magnetic head - Google Patents
Vertical magnetic headInfo
- Publication number
- JPS61242310A JPS61242310A JP8405985A JP8405985A JPS61242310A JP S61242310 A JPS61242310 A JP S61242310A JP 8405985 A JP8405985 A JP 8405985A JP 8405985 A JP8405985 A JP 8405985A JP S61242310 A JPS61242310 A JP S61242310A
- Authority
- JP
- Japan
- Prior art keywords
- pole
- magnetic
- main
- magnetic pole
- auxiliary
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は1例えばフロッピーディスクなどに用いらn
る垂直磁気記録方式による垂直磁気ヘッドに関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to 1, for example, floppy disks, etc.
This invention relates to a perpendicular magnetic head using a perpendicular magnetic recording method.
垂直磁気記録方式による垂直磁気ヘッドとして。 As a perpendicular magnetic head using perpendicular magnetic recording method.
特開昭52−134706 号公報に記載された。主、
磁極と補助磁極が記録媒体を介在させて対向するものが
提案されたが、記録再生に寄与する磁束が空間を拡散す
る開磁路となってお〕、効率が悪かった。It was described in Japanese Patent Application Laid-Open No. 134706/1983. main,
A system in which the magnetic pole and the auxiliary magnetic pole faced each other with a recording medium interposed was proposed, but this created an open magnetic path in which the magnetic flux contributing to recording and reproduction spread through space, resulting in poor efficiency.
これを改善するために、磁束の流れが閉磁路になるよう
な磁気ヘッドが提案されている。In order to improve this problem, a magnetic head has been proposed in which the magnetic flux flows in a closed magnetic path.
次に動作について説明する。第3図(1))に示すよう
に、補助磁極(5)がコイル(6)によって励磁さnる
と、a路(71は主磁極(41,補助磁極(5)、及び
パーマロイ層(3)を通る閉磁路を構成するので、効率
良く主磁極の先端面(4a)を飽和磁化レベルまで駆動
し強い磁界を発生させる。この磁界によシ記蛛媒体(1
)の厚さ方向に磁束が入射し、矢印(B)方向に走行す
る記録媒体(1)における磁化N(2)のトラック部(
8)に矢印(A)に示すような情報を記録できる。Next, the operation will be explained. As shown in FIG. 3 (1), when the auxiliary magnetic pole (5) is excited by the coil (6), the a-path (71) is the main magnetic pole (41, the auxiliary magnetic pole (5), and the permalloy layer (3). ), it efficiently drives the tip surface (4a) of the main pole to the saturation magnetization level and generates a strong magnetic field.This magnetic field causes the recording medium (1
) where the magnetic flux is incident in the thickness direction of the recording medium (1) traveling in the direction of the arrow (B).
8), information as shown by arrow (A) can be recorded.
再生時も同様の閉磁路を構成することによって磁化層(
2)に記録されている磁化の変化を、コイル(6)に効
率よく誘導させることができる。During reproduction, the magnetic layer (
2) can be efficiently induced in the coil (6).
従来の閉磁路を構成する垂直磁気ヘッドは、王磁極の先
端面(4a)におけるエツジ部(4b)と補助磁極の対
向面(5a)におけるエツジ部(5b)とが互いに平行
に構成さnでお九情報の記録・再生時に記録媒体(1)
の同一トラック部(8)を平行な状態で走行する。補助
磁極のエツジ部(5b)は閉磁路の磁気抵抗が一番小さ
くなるため、再生時において、主磁極(41と同時に補
助磁極のエツジ部(5b)で、トラック部(8)に記録
された情報を拾ってしまい、再生波形が歪むという問題
点があった。In a conventional perpendicular magnetic head constituting a closed magnetic path, an edge portion (4b) on the tip surface (4a) of the king magnetic pole and an edge portion (5b) on the opposing surface (5a) of the auxiliary magnetic pole are configured to be parallel to each other. Recording medium (1) when recording and playing back information
The two cars run in parallel on the same track section (8). Since the magnetic resistance of the closed magnetic path is the smallest at the edge part (5b) of the auxiliary magnetic pole, during reproduction, at the same time as the main magnetic pole (41), the edge part (5b) of the auxiliary magnetic pole records data in the track part (8). There was a problem that information was picked up and the reproduced waveform was distorted.
この発明は上記のような問題点を解消するためになさn
たもので、閉磁路の効率の良さを有し。This invention was made to solve the above problems.
It has the high efficiency of a closed magnetic circuit.
かつ情報の再生時において、補助磁極による再生波形の
歪みをは下させることができる垂直磁気ヘッドを得るこ
とを目的とする。Another object of the present invention is to obtain a perpendicular magnetic head that can reduce distortion of a reproduced waveform caused by an auxiliary magnetic pole when reproducing information.
この発明に係る垂直磁気ヘッドは、主磁極と。 The perpendicular magnetic head according to the present invention has a main magnetic pole.
この主磁極の磁束の磁路を与える補助磁極を有し記録媒
体の磁化層のトラック部に、記録置体の厚さ方向に磁束
を入射させて情報を記録し、その記録より再生を行なう
垂直磁気ヘッドにおいて、主磁極のトラック部との対向
面における補助磁極に対向する辺と、補助磁極のトラッ
ク部との対向面におけ゛る主磁極に対向する辺とが非平
行となるように構成したものである。It has an auxiliary magnetic pole that provides a magnetic path for the magnetic flux of the main magnetic pole, and records information by injecting magnetic flux into the track portion of the magnetic layer of the recording medium in the thickness direction of the recording medium, and reproduces information from the recording. The magnetic head is configured such that the side facing the auxiliary magnetic pole on the surface of the main pole facing the track portion and the side facing the main magnetic pole on the surface of the auxiliary pole facing the track portion are non-parallel. This is what I did.
この発明において、補助磁極のトラック部との対向面に
おける主磁極に対向する辺がトラック部に記録さnた情
報と非平行に構成され、アジマス角を有するようになる
ため、この補助磁極の辺で再生時に情報を拾う率が小さ
くなるため、再生波形の歪みが小さくなる。さらに記録
された情報が1%密度信号になるにつnて、情報を拾う
率が小さくなるため、再生波形の歪みが低下する。In this invention, the side of the auxiliary magnetic pole facing the main magnetic pole on the surface facing the track portion is configured to be non-parallel to the information recorded on the track portion and has an azimuth angle. Since the rate at which information is picked up during playback is reduced, the distortion of the playback waveform is reduced. Furthermore, as the recorded information becomes a 1% density signal, the rate at which information is picked up becomes smaller, resulting in lower distortion of the reproduced waveform.
以下、この発明の一実施例を因について説明する。第1
図(a)において、(1)〜(3)は従来装置と全く同
一のもので、(4)は1例えばパーマロイやアモルファ
スa性合金などからなる高飽和磁束千度で高透磁率の金
属性薄膜により形成された主磁極であシ、その対向面(
4a)すなわち先端面(4a)は記録媒体(1)のトラ
ック部(8)に対向し、記録−再生作用をなす。この磁
性薄膜よりなる主磁極(4)i;t、例えば逆り字型を
なすフェライト等の高透磁率材からなる補助磁極(5)
の上部で接合される。なお、補助磁極のトラック部(8
)との対向面(5a)は、主磁極の先端面(4a)よシ
も広い面積を有するとともに、主磁極の先端面(4a)
における補助磁極(5)に対向する辺であるエツジm(
41))と補助af極の対向面(5a)における主磁極
(4)に対向する辺であるエツジ部(5b)は互いに非
平行になるように配置されている。16)はコイルであ
り1点線(7>は磁束の通路を表わす磁路である。図中
、θは主磁極(41と補助磁極(5)のエツジ部(4m
))、 (51))のなす角を示し、アジマス角と称す
る。このθは90’で最も効果がよいが1例えは45°
くらいで実施すればよい。An embodiment of the present invention will be explained below. 1st
In Figure (a), (1) to (3) are exactly the same as the conventional device, and (4) is a metal with high saturation magnetic flux of 1,000 degrees and high magnetic permeability, such as permalloy or amorphous a-type alloy. The main magnetic pole is formed of a thin film, and its opposite surface (
4a) That is, the leading end surface (4a) faces the track portion (8) of the recording medium (1) and performs recording and reproducing functions. The main magnetic pole (4) i; t is made of this magnetic thin film, and the auxiliary magnetic pole (5) is made of a high permeability material such as ferrite, which has an inverted shape, for example.
are joined at the top. In addition, the track part of the auxiliary magnetic pole (8
) has a larger area than the tip surface (4a) of the main pole, and also has a larger area than the tip surface (4a) of the main pole.
The edge m(
41)) and the edge portion (5b), which is the side facing the main magnetic pole (4) on the opposing surface (5a) of the auxiliary af pole, are arranged so as to be non-parallel to each other. 16) is a coil, and the dotted line (7> is a magnetic path representing the path of magnetic flux. In the figure, θ is the edge part (4 m) of the main magnetic pole (41) and the auxiliary magnetic pole (5).
)), (51)) and is called the azimuth angle. The best effect is when this θ is 90', but an example is 45°.
It should be carried out in about 20 minutes.
第1図(1))は、この実施例による倫直磁気ヘッドの
側面図である。FIG. 1(1)) is a side view of the magnetic head according to this embodiment.
第1図(1))に示すように、記録及び再LE時の磁路
(71は、主磁極(41,補助磁極(5)及びパーマロ
イ層(3)を通る閉磁路を形成するので、W43図(a
)、 (b)に示す従来の垂直磁気ヘッドと同様に、効
率の良いヘッドである。As shown in FIG. 1 (1), the magnetic path (71) during recording and re-LE forms a closed magnetic path passing through the main magnetic pole (41, auxiliary magnetic pole (5), and permalloy layer (3), so W43 Figure (a
), (b) It is a highly efficient head, similar to the conventional perpendicular magnetic head shown in (b).
第111(a)に示すように、補助磁極のエツジ部(5
b)と、主磁極(41によってトラック部(8)に記録
された情報とが非平行でアジマス角θを有するので、再
生時において補助磁極(41から拾う情報はアジマス効
果によって小さくなり、さらに高密度記録になる#1ど
補助磁極(41から拾う情報は従来に比較して小さくな
る。このため、再生波形の歪みが少なくなる。As shown in No. 111(a), the edge portion (5
b) and the information recorded on the track section (8) by the main magnetic pole (41) are nonparallel and have an azimuth angle θ, so during reproduction, the information picked up from the auxiliary magnetic pole (41) becomes smaller due to the azimuth effect, and the information is further increased. The information picked up from the #1 auxiliary magnetic pole (41) for density recording is smaller compared to the conventional method.Therefore, the distortion of the reproduced waveform is reduced.
また、第4図はこの発明の他の実施例を示すもので、主
磁極(410前後に補助磁極(5)を設け、どちらの補
助磁極(5)のエツジB(S(51))と°トラック部
(8)に記録された情報とがアジマス角θを有するよう
に構成したものでるる この実施例は、上記実施例と同
様の効果に力■え、さらに記録・再生効率を向上させた
ものである。FIG. 4 shows another embodiment of the present invention, in which an auxiliary magnetic pole (5) is provided before and after the main magnetic pole (410), and the edge B (S (51)) of which auxiliary magnetic pole (5) This embodiment is constructed so that the information recorded on the track section (8) has an azimuth angle θ.This embodiment achieves the same effect as the above embodiment, and further improves the recording/reproducing efficiency. It is something.
以上のように、この発明によnば、主磁極と。 As described above, according to the present invention, the main magnetic pole.
この主磁極の磁束の磁路を与える補助a極を有し。It has an auxiliary a pole that provides a magnetic path for the magnetic flux of this main pole.
記録媒体の磁化層のトラック部に、記録媒体の厚さ方向
に磁束を入射させて情報を記録し、その記録より再生を
行なう垂直磁気ヘッドにおいて、主磁極のトラック部と
の対向面における補助磁極に対向する辺と、補助磁極の
トラック部との対向面における主磁極に対向する辺とが
非平行となるように構成したので、記録・再生効率が良
く、再生波形の歪みの少ない垂直磁気ヘッドが得らn、
記録情報が高密度化さnたものに対して特にその効果が
大きい。In a perpendicular magnetic head that records information by injecting magnetic flux in the thickness direction of the recording medium into the track portion of the magnetic layer of the recording medium and performs reproduction from the recording, an auxiliary magnetic pole on the surface opposite to the track portion of the main magnetic pole. Since the side facing the auxiliary magnetic pole and the side facing the main pole on the surface facing the track portion of the auxiliary magnetic pole are non-parallel, the vertical magnetic head has high recording/reproducing efficiency and less distortion of the reproduced waveform. is obtained n,
This effect is particularly great when the recorded information is of high density.
第1図(a)は、この発明の一実施例による垂直磯気ヘ
ッドを示す斜視図で、第1図(b)はその側面図である
。第2図はこの発明の他の実施例を示すもので、主磁極
の前後に補助磁極を設けた垂直磁気ヘッドの斜視図であ
る。第3図(a)は従来の閉磁路を有する垂直磁気ヘッ
ドを示す斜視図で、第3図(1))はその側面図である
。
図において、(1)は記録媒体、(41は主磁極、 (
4a)は主磁極のトラック部との対向面、 (41))
Fi主磁極の補助磁極に対向する辺、(5)は補助磁極
、 (5a)は補助磁極のトラック部との対向面、 (
sb)は補助磁極の主磁極に対向する辺、(8)はトラ
ック部である。
なお2図中、同一符号は同一、又は相当部分を示す。FIG. 1(a) is a perspective view showing a vertical sea air head according to an embodiment of the present invention, and FIG. 1(b) is a side view thereof. FIG. 2 shows another embodiment of the present invention, and is a perspective view of a perpendicular magnetic head in which auxiliary magnetic poles are provided before and after a main magnetic pole. FIG. 3(a) is a perspective view showing a conventional perpendicular magnetic head having a closed magnetic path, and FIG. 3(1) is a side view thereof. In the figure, (1) is the recording medium, (41 is the main magnetic pole, (
4a) is the surface facing the track portion of the main pole, (41))
The side of the Fi main magnetic pole facing the auxiliary magnetic pole, (5) is the auxiliary magnetic pole, (5a) is the surface facing the track part of the auxiliary magnetic pole, (
sb) is the side of the auxiliary magnetic pole facing the main magnetic pole, and (8) is the track portion. Note that in the two figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
有し、記録媒体の磁化層のトラック部に上記記録媒体の
厚さ方向に磁束を入射させて情報を記録し、その記録よ
り再生を行なう垂直磁気ヘッドにおいて、上記主磁極の
上記トラック部との対向面における上記補助磁極に対向
する辺と、上記補助磁極の上記トラック部との対向面に
おける上記主磁極に対向する辺とが非平行となるように
構成したことを特徴とする垂直磁気ヘッド。It has a main magnetic pole and an auxiliary magnetic pole that provides a magnetic path for the magnetic flux of the main magnetic pole, and records information by injecting magnetic flux into the track portion of the magnetic layer of the recording medium in the thickness direction of the recording medium, and from the recorded information. In a perpendicular magnetic head that performs reproduction, a side opposite to the auxiliary magnetic pole on a surface of the main pole facing the track portion, and a side facing the main magnetic pole on a surface of the auxiliary magnetic pole facing the track portion. A perpendicular magnetic head characterized in that it is configured to be non-parallel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8405985A JPS61242310A (en) | 1985-04-19 | 1985-04-19 | Vertical magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8405985A JPS61242310A (en) | 1985-04-19 | 1985-04-19 | Vertical magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61242310A true JPS61242310A (en) | 1986-10-28 |
Family
ID=13819920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8405985A Pending JPS61242310A (en) | 1985-04-19 | 1985-04-19 | Vertical magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61242310A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63317909A (en) * | 1987-06-22 | 1988-12-26 | Mitsubishi Electric Corp | Vertical magnetic recording head |
EP0538823A2 (en) * | 1991-10-22 | 1993-04-28 | Sony Corporation | Perpendicular magnetic recording and perpendicular magnetic reproducing apparatus |
-
1985
- 1985-04-19 JP JP8405985A patent/JPS61242310A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63317909A (en) * | 1987-06-22 | 1988-12-26 | Mitsubishi Electric Corp | Vertical magnetic recording head |
EP0538823A2 (en) * | 1991-10-22 | 1993-04-28 | Sony Corporation | Perpendicular magnetic recording and perpendicular magnetic reproducing apparatus |
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