JPS62129926A - Thin film type vertical magnetic head - Google Patents

Thin film type vertical magnetic head

Info

Publication number
JPS62129926A
JPS62129926A JP25192685A JP25192685A JPS62129926A JP S62129926 A JPS62129926 A JP S62129926A JP 25192685 A JP25192685 A JP 25192685A JP 25192685 A JP25192685 A JP 25192685A JP S62129926 A JPS62129926 A JP S62129926A
Authority
JP
Japan
Prior art keywords
magnetic
head
substrate
recording
thin film
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
Application number
JP25192685A
Other languages
Japanese (ja)
Inventor
Hiroyuki Yoshimori
由森 博之
Tatsuo Imamura
今村 辰男
Hiroyuki Watabe
洋之 渡部
Hiroyuki Abe
弘之 阿部
Jiro Fukuda
慈朗 福田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP25192685A priority Critical patent/JPS62129926A/en
Priority to PCT/JP1985/000663 priority patent/WO1986003616A1/en
Priority to EP85906089A priority patent/EP0202343B1/en
Priority to DE8585906089T priority patent/DE3586827T2/en
Publication of JPS62129926A publication Critical patent/JPS62129926A/en
Priority to US07/327,258 priority patent/US5003423A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/1278Structure 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

PURPOSE:To shield a vertical magnetic head from an external magnetic field and to evade effectively a drop in recording and reproduction level by providing a main magnetic pole thin film and a conductor which cross-links with it on a head substrate fitted in the recessed part of a magnetic block having high magnetic permeability. CONSTITUTION:The main magnetic pole 11, a circulation magnetic pole 13, etc., are formed on the top surface of the head substrate 14 fitted in the recessed part 15a of a shield magnetic substrate 15 made of a magnetic material having high magnetic permeability. A nonmagnetic protection member 17 with a step (d) is fitted in the recessed part of the shield magnetic substrate 18 and stacked and adhered to the substrate 15 to protect the main magnetic pole. When a recording medium 4 runs on the front end surface of this vertical magnetic head 10 as shown by an arrow X, an external magnetic field 22 even if applied as shown by an arrow Y passes through the substrates 15 and 18 and exits from a magnetic member 19 to the air, so that the external magnetic field is separate completely from a recording magnetic field 21. Thus, the head is shielded from the external magnetic field to prevent a fall in recording and reproduction level.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、薄膜型垂直磁気ヘッド、更に詳しくは、薄膜
技術を利用して構成した垂(!!磁気ヘッドに関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thin film perpendicular magnetic head, and more particularly to a vertical magnetic head constructed using thin film technology.

[従来の技術] 薄膜型磁気ヘッドは通常の磁気ヘッドに較べて(1) 
/J)用!化、マルチトラック化力< iM fmであ
る、〈2)一括生産による低価格化と特性の均一化が図
れる、(3)低インダクタンス化により広帯域化が容品
にできる、等の利点があり、近年、磁気ディスク装置な
どの磁気記録再生装置に次第に多く用いられつつある。
[Prior art] Thin-film magnetic heads have the following advantages (1) compared to ordinary magnetic heads:
/J) for! It has the following advantages: (1) low inductance and uniform characteristics due to bulk production; (3) low inductance allows for wide bandwidth. In recent years, they have been increasingly used in magnetic recording and reproducing devices such as magnetic disk drives.

そして、記録密度の向上に関しては、磁気記録媒体をそ
の厚さ方向に磁化させる垂直磁気記録方式が、面内方向
に磁化させる在来の面内磁気記録方式に較べてはるかに
優れていることが知られており、従って、垂直磁気記録
方式で薄膜型垂直磁気ヘッドを用いた場合には従来より
もはるかに高密度の記録を行なうことができる。
In terms of improving recording density, the perpendicular magnetic recording method, which magnetizes the magnetic recording medium in the direction of its thickness, is far superior to the conventional longitudinal magnetic recording method, which magnetizes the medium in the in-plane direction. Therefore, when a thin film perpendicular magnetic head is used in the perpendicular magnetic recording system, recording can be performed at a much higher density than conventional methods.

ところで、垂直磁気記録方式においては、在来の面内磁
気記録方式における場合よりも、外部磁界によって受け
る影響が大きいということが知られている。このことを
、次に、第5図に示す補助磁極励磁型の垂t1″i磁気
ヘッドによって説明する。
By the way, it is known that in the perpendicular magnetic recording method, the influence of an external magnetic field is greater than in the conventional longitudinal magnetic recording method. This will now be explained using the auxiliary pole excitation type vertical t1''i magnetic head shown in FIG.

第5図に示すように、Co−Zr−Nb等の高透磁率磁
性薄膜からなる主磁極1と、フェライト等からなる高透
磁率磁性体ブロック2aに情報信号電流送受用の巻線2
bが巻回されている補助磁極2とが所定の空隙3を何し
て対向配置されるようになっている。そして、磁気記録
および再生を行なう際には上記空隙3に磁気記録媒体4
を走行させ、この媒体4の磁化膜を上記主磁極膜1に摺
接するようになっている。上記磁気記録媒体4は、高分
子フィルム等からなる可撓性のあるベース4a上に、F
e−Niパーマロイ等からなる高透磁率磁性層4bを形
成し、さらにその上に媒体面に対して垂直方向の磁化容
易軸を有する垂直磁気記録層4Cを形成して構成されて
いる。
As shown in FIG. 5, a main magnetic pole 1 made of a high permeability magnetic thin film such as Co-Zr-Nb and a high permeability magnetic block 2a made of ferrite etc. are connected to a winding 2 for transmitting and receiving an information signal current.
The auxiliary magnetic pole 2 around which the magnetic pole b is wound is arranged to face the auxiliary magnetic pole 2 across a predetermined gap 3. When performing magnetic recording and reproduction, a magnetic recording medium 4 is inserted into the gap 3.
The magnetized film of the medium 4 is brought into sliding contact with the main pole film 1. The magnetic recording medium 4 is mounted on a flexible base 4a made of a polymer film or the like.
A high permeability magnetic layer 4b made of e-Ni permalloy or the like is formed, and a perpendicular magnetic recording layer 4C having an axis of easy magnetization perpendicular to the medium surface is formed thereon.

このように構成されている補助磁極励磁型垂直磁気ヘッ
ドの動作は、図示しない信号発生部から送出された情報
信号が巻線2bに印加されると、hli助磁補磁極2界
が発生し、この磁界は主磁極1に作用し、この主磁極1
の先端部に鋭い磁界を発生する。そして、この鋭い磁界
により磁気記録媒体4に上記情報信号が磁気安換されて
記録される。
The operation of the auxiliary magnetic pole excitation type perpendicular magnetic head configured as described above is such that when an information signal sent from a signal generator (not shown) is applied to the winding 2b, an hli auxiliary magnetic pole 2 field is generated. This magnetic field acts on the main magnetic pole 1, and this main magnetic pole 1
Generates a sharp magnetic field at the tip. The information signal is magnetically converted and recorded on the magnetic recording medium 4 by this sharp magnetic field.

また、」二足垂直磁気ヘッドにおいては、磁束の流れが
開磁路構成になっているために、上述の鋭い磁界は、例
えば、主磁極1−磁気記録媒体4−補助磁極2という磁
路で流れた後、空間を通過して主磁極1へ還流する。
Furthermore, in a bipedal perpendicular magnetic head, since the magnetic flux flows in an open magnetic path configuration, the above-mentioned sharp magnetic field occurs in the magnetic path of, for example, main magnetic pole 1 - magnetic recording medium 4 - auxiliary magnetic pole 2. After flowing, it passes through the space and returns to the main magnetic pole 1.

〔発明が解決しようとする問題点コ しかし、上記のような開磁路構成においては、上記磁気
記録媒体4を駆動するだめのモーター、あるいは地磁気
(日本では0.3〜0.4エルステツドといわれる)等
による外部磁界の影響を受けやすい。即ち、この外部磁
界か、第5図に示した太い矢印Yのように上記磁気記録
媒体4に垂直に印加されたとすると、上記主磁極1.磁
気記録媒体4、補助磁極2を通る磁界は、細線の矢印で
示したようになる。そのため、−通りの情報信号の磁気
記録が終了し、この磁気記録を再生している時に上述の
ような強い外部磁界が印加されると、この外部磁界の大
きさによっては再生信号の再生出力レベルが減少させら
れてしまうことがある。
[Problems to be Solved by the Invention] However, in the open magnetic path configuration as described above, the motor for driving the magnetic recording medium 4 or the earth's magnetic field (which is said to be 0.3 to 0.4 oersted in Japan) ) etc. are easily affected by external magnetic fields. That is, if this external magnetic field is applied perpendicularly to the magnetic recording medium 4 as indicated by the thick arrow Y shown in FIG. 5, the main magnetic pole 1. The magnetic field passing through the magnetic recording medium 4 and the auxiliary magnetic pole 2 is as shown by the thin arrow. Therefore, when the magnetic recording of the information signal is completed and the above-mentioned strong external magnetic field is applied while this magnetic recording is being reproduced, the reproduction output level of the reproduction signal may vary depending on the magnitude of the external magnetic field. may be reduced.

このような現象を実測すると第6図に示すようになる。When such a phenomenon is actually measured, it becomes as shown in FIG.

即ち、上記第5図に示した垂直磁気ヘッドにおいて、磁
気記録媒体4に数種類の強さの垂直な外部磁界を印加す
る。そして、外部磁界が印加されない場合の再生出力レ
ベルを「1」として縦軸にとり、印加された外部磁界(
単位二〇e(エルステッド))を横軸にとると、上記第
6図に示すように、外部磁界が1エルステツドになると
、再生出力レベルはほぼ零になってしまう。
That is, in the perpendicular magnetic head shown in FIG. 5, perpendicular external magnetic fields of several different strengths are applied to the magnetic recording medium 4. The reproduction output level when no external magnetic field is applied is taken as "1" on the vertical axis, and the external magnetic field (
If the horizontal axis is expressed in units of 20e (oersteds), as shown in FIG. 6, when the external magnetic field reaches 1 oersteds, the reproduction output level becomes almost zero.

外部磁界の影響は上述のような記録・再生出力の低下の
みならず、記録レベルの低下、或いは記録・再生動作が
なされない状態で磁気ヘッドが既に記録済の媒体に近接
又は摺接した場合における媒体の残留磁化に対する低減
作用となって現われる。
The effects of external magnetic fields not only reduce the recording/reproducing output as described above, but also reduce the recording level, or when the magnetic head comes close to or comes into sliding contact with a medium that has already been recorded while no recording/reproducing operation is being performed. This appears as a reducing effect on the residual magnetization of the medium.

そして、上述した外部磁界の影響による不具合は、当然
、薄膜技術により製造される薄膜型垂直磁気ヘッドにお
いても同様に発生することとなり、外部磁界の影響を受
けることのない薄膜型垂直磁気ヘッドが望まれていた。
Of course, the above-mentioned problems caused by the influence of external magnetic fields also occur in thin-film perpendicular magnetic heads manufactured using thin-film technology, so a thin-film perpendicular magnetic head that is not affected by external magnetic fields is desired. It was rare.

本発明は、上述の問題点に着目してなされたもので、外
部磁界が印加されても、記録・再生出力レベル並びに磁
気ヘッドが既記縁の媒体に近接もしくは摺接した場合に
おける同媒体の記録レベルが影響を受けないようにした
薄膜型垂直磁気ヘッドを提供するにある。
The present invention has been made in view of the above-mentioned problems, and even when an external magnetic field is applied, the recording/reproducing output level and the level of the recording/reproducing output level of the medium when the magnetic head approaches or comes into sliding contact with the medium at the recorded edge. To provide a thin film type perpendicular magnetic head in which the recording level is not affected.

[問題点を解決するための手段および作用コ本発明の薄
膜型垂直磁気ヘッドは、高透磁率磁性材ブロックに形成
された凹所にヘッド用基板を固定し、同ヘッド用基板上
に主磁極薄膜を形成したのち、同主磁極薄膜と鎖交する
導体を、多層配線構造で主磁極薄膜上に設けられてなる
ものであり、高透磁率磁性材ブロックによりヘッド用基
数が囲まれ、外部磁界に対して磁気シールドされる。
[Means and effects for solving the problem] In the thin-film perpendicular magnetic head of the present invention, a head substrate is fixed in a recess formed in a block of high magnetic permeability magnetic material, and a main magnetic pole is mounted on the head substrate. After forming a thin film, a conductor that interlinks with the main magnetic pole thin film is provided on the main magnetic pole thin film in a multilayer wiring structure. magnetically shielded from

[実 施 例コ 以下、本発明を図示の実施例に基づいて説明する。[Implementation example] Hereinafter, the present invention will be explained based on illustrated embodiments.

第1図は本発明の一実施例を示す薄膜型垂直磁気ヘッド
を拡大した切断端面図である。なお、本発明においても
、磁気記録媒体4としては、第5図に示されたものと全
く同様のものを適用することが望ましい。即ち、前述の
とおり磁気記録媒体4は、高分子フィルム等からなる可
撓性のあるベース4a上に、Fe−Niパーマロイ等か
らなる高透磁率磁性層4bを形成し、さらにその上に媒
体面に垂直な方向に磁化容易軸を有する垂直磁気記録層
4Cを形成して?、!7成されている。この薄膜型垂直
磁気ヘッド10は主磁極112巻線導線環2゜還流磁極
13等を形成された薄膜ヘッド用J1(板14と、同ヘ
ッド用)、r、板14を囲む第1の磁気シールド用磁性
基板15と、この第1の磁気シールド用磁性基板15に
形成されたり一ト部16と、薄膜ヘッド用基板14のパ
ターン形成面と対向する非磁性保護部材17と、同保護
部材17を囲み上記第1の磁気シールド用基板15に対
向する第2の磁気シールド用磁性基板18等により構成
されている。
FIG. 1 is an enlarged cut end view of a thin film type perpendicular magnetic head showing an embodiment of the present invention. In the present invention, it is also desirable to use the same magnetic recording medium 4 as shown in FIG. 5. That is, as described above, the magnetic recording medium 4 has a high permeability magnetic layer 4b made of Fe-Ni permalloy or the like formed on a flexible base 4a made of a polymer film or the like, and further has a medium surface layer formed thereon. Forming a perpendicular magnetic recording layer 4C having an axis of easy magnetization in a direction perpendicular to ? ,! 7 has been completed. This thin-film type perpendicular magnetic head 10 includes a main magnetic pole 112, a winding conductor ring 2°, a reflux magnetic pole 13, etc. for thin-film heads J1 (for the same head and a plate 14), r, and a first magnetic shield surrounding the plate 14. a magnetic substrate 15 for magnetic shielding, a magnetic shield portion 16 formed on the first magnetic substrate 15 for magnetic shielding, a non-magnetic protective member 17 facing the pattern-formed surface of the thin-film head substrate 14; The box is composed of a second magnetic shielding substrate 18 facing the first magnetic shielding substrate 15, and the like.

上記薄膜垂直磁気ヘッド10は次のようにして作成され
る。第2図(A)に示すように、直方体形状の磁性フェ
ライト等の高透磁率磁性材からなる第1の磁気シールド
用磁性基板15には、直交する2つの而に開口してなる
直方体形状の凹所15aが形成され、同凹所15aには
、第2図(B)に示すように、薄膜ヘッド用基板14が
嵌合され、接着等により一上記磁性基板15に一体的に
固着される。そして、この第1の磁気シールド用磁性基
板I5に一体化された薄膜ヘット用基板14の、上記凹
所15aより露lIシした2つの面、即ち、第2図(B
)における−1h、而14aと、磁気記録媒体4に対向
する(第1図参照)先端側面(以下、先端面と称す)1
4bとを、上を己磁気シールド用磁性基板15の面と同
一平面となるように研磨する。
The thin film perpendicular magnetic head 10 is manufactured as follows. As shown in FIG. 2(A), the first magnetic shielding magnetic substrate 15 made of a high magnetic permeability magnetic material such as rectangular parallelepiped magnetic ferrite has two orthogonal openings. A recess 15a is formed, and as shown in FIG. 2(B), a thin film head substrate 14 is fitted into the recess 15a, and is integrally fixed to the magnetic substrate 15 by adhesive or the like. . Then, two surfaces of the thin film head substrate 14 integrated with the first magnetic shielding magnetic substrate I5 exposed from the recess 15a, that is, FIG.
) at -1h, 14a, and the tip side surface (hereinafter referred to as the tip surface) 1 facing the magnetic recording medium 4 (see FIG. 1).
4b is polished so that the top thereof becomes flush with the surface of the magnetic substrate 15 for magnetic shielding.

このあと、第2図(C)に示すように、薄膜ヘッド用基
板14の研磨された上面14aに、主磁極11、巻線導
体12.還流磁極13の順で薄膜のパターンを形成する
。主磁極11および還流磁極13には、例えば、コバル
トジルコンニオブ、コバルトジルコンモリブデン、パー
マロイ、センダスト等アモルファス系の磁性金属などが
用いられる。」二足主磁極119巻線環体12.還流磁
極13の各パターンは間に絶縁層を介し周知の多層配線
技術により形成される。」−記主磁極11および還流磁
極13の一端は」−2薄膜ヘッド基板14の側面14b
がわに露呈している(第1図参照)。そして、この薄膜
ヘッド基板14−Lの磁気ヘッドパターンの形成後、上
記巻線導体12の始端と終端にそれぞれ接続して、上記
第1の磁気シールド用磁性基板15の上面に2本のリー
ド部16の薄膜を形成する。この2本のリード部16の
他端は上記薄膜ヘッド用基板14の先端面14bとは反
対側の第1の磁気シールド用磁性基板15の後端部に至
っている。
After that, as shown in FIG. 2(C), the main magnetic pole 11, the winding conductor 12. A thin film pattern is formed in the order of the reflux magnetic pole 13. For the main magnetic pole 11 and the return magnetic pole 13, an amorphous magnetic metal such as cobalt zircon niobium, cobalt zircon molybdenum, permalloy, and sendust is used. ” Two-legged main pole 119 winding ring 12. Each pattern of the reflux magnetic pole 13 is formed by a well-known multilayer wiring technique with an insulating layer interposed therebetween. "-2 One end of the main magnetic pole 11 and the return magnetic pole 13 is located on the side surface 14b of the thin-film head substrate 14.
It is exposed on the wall (see Figure 1). After the magnetic head pattern of the thin film head substrate 14-L is formed, two lead portions are connected to the starting end and the terminal end of the winding conductor 12, respectively, on the upper surface of the first magnetic shielding magnetic substrate 15. 16 thin films are formed. The other ends of these two lead portions 16 reach the rear end of the first magnetic shielding magnetic substrate 15 on the opposite side from the tip surface 14b of the thin film head substrate 14.

このままでは、上記薄膜ヘッド基板14の上面14aに
形成された磁気ヘッドパターンが露呈したままであるの
で、これを保護するために、非磁性体からなる保護部材
17と第2の磁気シールド用磁性基板18が用いられる
。第2の磁気シールド用基板18は、上記第1の磁気シ
ールド用磁性基板15と同様に磁性フェライト等の高透
磁率磁性材からなり、第3図(A)に示すように、上記
第1の磁気シールド用磁性基板15より若干前後方向(
第3図(A)において左右方向)の長さが短い長方体形
状とされ、上記凹所15aと同程度の大きさの凹所18
aが、同様に磁気シールド用磁性基板18の直交する2
つの面に開口して形成される。この凹所18aには第3
図(B)に示すように、上記非磁性保護部材17が嵌合
され、接着等により上記第2の磁性基板18に一体的に
固着される。この保護部材17の厚みは、」二足凹所1
8aの、第2の磁性基板18の厚み方向の深さ寸法より
も若干小さくなっており、このため、第3図(B)にお
いて、第2の磁性基板18の上面よりも保護部材17の
上面が若干低くなっていてその間に数十μm程度の段差
dを有している。次に、この保護部材17を一体的に有
した第2の磁性基板18は上下方向を逆にして、上記薄
膜ヘット用基板14を一体的に有した第1の磁性基板1
5上に、第4図に2点鎖線で示す位置18Aに配置して
重ね合わせ、2つの磁性基板15.18を接着剤を用い
て、或いはガラス融着手段により接合する。このとき、
上記保護基板17が上記薄膜ヘッド用基板14に対向す
ることになるが、保護基板17の面が第2の磁性基板1
8の而との間に」二足段差dを何していることから、第
1の磁性基板15と第2の磁性基板18とか接着した状
態で、]−記保護基板17は」〕記薄膜ヘッド用基板1
41−の主磁極11巻巻線外12.還流磁極13等から
なる磁気ヘッドパターンに接触することなく、同磁気ヘ
ッドパターンを覆ってこれを保護する。このようにして
2つの磁性基板15と18が接合して一体化することに
より薄膜型垂直磁気ヘッド10が作成される。第1の磁
性基板15は第2の磁性基板18より若干長いため、第
1の磁性基板15上の後端部に引き出されたリード部1
6の先端が外部に露呈し接続端子を形成している。
If this continues, the magnetic head pattern formed on the upper surface 14a of the thin film head substrate 14 will remain exposed, so in order to protect it, a protective member 17 made of a non-magnetic material and a second magnetic shielding magnetic substrate are used. 18 is used. The second magnetic shielding substrate 18 is made of a high magnetic permeability magnetic material such as magnetic ferrite like the first magnetic shielding substrate 15, and as shown in FIG. Slightly forward and backward direction from the magnetic shielding magnetic substrate 15 (
A recess 18 having a rectangular parallelepiped shape with a short length (in the left-right direction in FIG. 3(A)) and having the same size as the recess 15a.
Similarly, 2 a is orthogonal to the magnetic substrate 18 for magnetic shielding.
It is formed with openings on two sides. This recess 18a has a third
As shown in Figure (B), the non-magnetic protection member 17 is fitted and integrally fixed to the second magnetic substrate 18 by adhesive or the like. The thickness of this protective member 17 is as follows:
8a in the thickness direction of the second magnetic substrate 18, and therefore, in FIG. is slightly lower, and there is a step d of about several tens of micrometers between them. Next, the second magnetic substrate 18 that integrally has the protective member 17 is turned upside down, and the first magnetic substrate 1 that integrally has the thin film head substrate 14 is formed.
The two magnetic substrates 15 and 18 are placed on top of each other at a position 18A indicated by a two-dot chain line in FIG. At this time,
The protective substrate 17 faces the thin film head substrate 14, but the surface of the protective substrate 17 is opposite to the second magnetic substrate 1.
Since there is a two-legged step d between the 8th and Head board 1
41- main magnetic pole 11 winding outer winding 12. The magnetic head pattern consisting of the return magnetic pole 13 and the like is covered and protected without coming into contact with the magnetic head pattern. In this way, the two magnetic substrates 15 and 18 are bonded and integrated to form a thin film type perpendicular magnetic head 10. Since the first magnetic substrate 15 is slightly longer than the second magnetic substrate 18, the lead portion 1 drawn out to the rear end portion on the first magnetic substrate 15
The tip of 6 is exposed to the outside and forms a connection terminal.

」二足のように構成された薄膜型垂直磁気ヘット10を
用いて磁気記録・再生を行なうに際し、同磁気ヘット1
0の先端而に沿って磁気記録媒体4を矢印X方向に走行
させる。このとき、第1図に示すように、上記薄膜型垂
直磁気ヘッド10の先端而に磁気記録媒体4を挟んで磁
性部材19を対向させるようにする。そして、例えば、
磁気記録時において、リード部16を通じて巻線導体1
2に記録用電流を流すと、主磁極11より磁界を発生し
、符号21で示すように主磁極11−磁気記録媒体4→
還流磁極13−主磁極11の磁路で磁束が流れる。この
磁気記録中或いは磁気記録終了後に、矢印Yて示すよう
に、磁気記録媒体4の而に垂直な外部磁界か」二足薄膜
へ゛1垂直磁気ヘッド10に印加されたとすると、この
場合には、この外部磁界によって、71号22で示すよ
うに、第1の磁性基板15および第2の磁性基板18を
磁束か分かれて下方に進み、磁気記録媒体4を通過して
磁性部材19に至り、さらにこの磁性部月19から空中
へと放散されていく。つまり、上記符号22で示した外
部磁界と71号21て示した内側の記録用磁界とは完全
に分離されており、外部磁界か記録用磁界に影響を及ぼ
すことはない。なお、再生時にも、1.記記録時と同様
の磁路を形成する磁界が既記縁媒体によって発生する。
” When performing magnetic recording and reproducing using the thin-film perpendicular magnetic head 10 configured like two legs, the magnetic head 1
The magnetic recording medium 4 is run in the direction of the arrow X along the leading edge of the magnetic recording medium 4. At this time, as shown in FIG. 1, a magnetic member 19 is placed opposite the tip of the thin film type perpendicular magnetic head 10 with the magnetic recording medium 4 interposed therebetween. And for example,
During magnetic recording, the winding conductor 1 is
When a recording current is applied to 2, a magnetic field is generated from the main magnetic pole 11, and as shown by reference numeral 21, the main magnetic pole 11 - magnetic recording medium 4 →
Magnetic flux flows in the magnetic path between the return magnetic pole 13 and the main magnetic pole 11. During or after magnetic recording, if an external magnetic field perpendicular to the magnetic recording medium 4 is applied to the two-legged thin film by the perpendicular magnetic head 10, as shown by arrow Y, in this case, As shown in No. 71 No. 22, this external magnetic field causes the first magnetic substrate 15 and the second magnetic substrate 18 to be separated into magnetic fluxes and proceed downward, passing through the magnetic recording medium 4 and reaching the magnetic member 19, and then further This magnetic part is dissipated into the air from the moon 19. That is, the external magnetic field indicated by the reference numeral 22 and the inner recording magnetic field indicated by No. 71 21 are completely separated, and the external magnetic field does not affect the recording magnetic field. Also, during playback, 1. A magnetic field forming a magnetic path similar to that during recording is generated by the recorded edge medium.

従って、外部磁界に起因する記録・再生レベルの低下お
よび磁気ヘッドが既記縁媒体に近接もしくは摺接した場
合における同媒体の記録レベルの低下か6゛効に回避さ
れる。
Therefore, a decrease in the recording/reproducing level caused by an external magnetic field and a decrease in the recording level of the recorded edge medium when the magnetic head comes close to or in sliding contact with the medium can be effectively avoided.

[発明の効果コ 以上述べたように本発明によれば、薄膜型垂直磁気ヘッ
ドにおいても、外部磁界による記録・再生レベルの低下
および磁気ヘッドが既記縁の媒体に接触或いは近接した
ときの同媒体における記録レベルの低下を防止すること
ができ、しかも簡単な(1〜1成により達成することか
できる。
[Effects of the Invention] As described above, according to the present invention, even in a thin-film perpendicular magnetic head, there is a reduction in the recording/reproducing level due to an external magnetic field, and the same problem occurs when the magnetic head contacts or approaches a medium with a recorded edge. It is possible to prevent a decrease in the recording level on the medium, and it can be achieved by simple steps (1 to 1).

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明の一実施例を示す薄膜型重置磁気ヘッ
ドを拡大した切断端面図 第2図り八)〜(C)は、1−記〆W膜型垂直磁気ヘッ
ドの一方の構成部キイの作成手順を示す斜視図、第3図
(A) 、 (B)は、」−記薄膜型垂直磁気ヘットの
他方の構成部材の作成手順を示す斜視図、第4図、−に
記2つの構成部材を嵌合して薄膜型垂1真磁気ヘッドを
形成する工程の斜視図、第5図は、従来の垂直磁気ヘッ
ドの一例を示す正面図、 第6図は、上記第5図に示す従来の垂直磁気ヘッドに外
部磁界を印加したときの再生信号の出力レベルの低動を
表わす特性図である。 4・・・・・・・・・・・・磁気記録媒体10・・・・
・・・・・薄膜型垂直磁気ヘット11・・・・・・・・
・主磁極(主磁極薄膜)12・・・・・・・・・巻線導
体(導体)13・・・・・・・・還流磁極 14・・・・・・・・・薄膜ヘット用基数15・・・・
・・・・・第1の磁気シールド用磁性基板(高透磁率磁
性相ブロック) 16・・・・・・・リード部 17・・・・・・・・・非磁性保護部材18・・・・・
・・・・第2の磁気シールド用磁性Jλ板特許出願人 
 オリンパス光学工業株式会社 −111t′;・− 代 理 人  藤   川   七   部、′’(t
 i ’:パ″71     小 山 I’ll   
 光   夫1、・、+−1,、、方I Z ど 鳥2ワ <A) CB) (C) 方3E’   (A) (B) 氾4図 (エルステ、ド2
FIG. 1 is an enlarged cross-sectional view of a thin film type superimposed magnetic head showing an embodiment of the present invention. 3(A) and 3(B) are perspective views showing the steps for making the other component of the thin-film type perpendicular magnetic head, and FIG. FIG. 5 is a perspective view of the process of fitting two structural members to form a thin-film vertical magnetic head; FIG. 5 is a front view showing an example of a conventional perpendicular magnetic head; FIG. FIG. 3 is a characteristic diagram showing a decrease in the output level of a reproduced signal when an external magnetic field is applied to the conventional perpendicular magnetic head shown in FIG. 4...Magnetic recording medium 10...
...Thin film type perpendicular magnetic head 11...
・Main magnetic pole (main magnetic pole thin film) 12...... Winding conductor (conductor) 13... Return magnetic pole 14... Thin film head base number 15・・・・・・
......First magnetic shielding magnetic substrate (high permeability magnetic phase block) 16...Lead portion 17...Nonmagnetic protection member 18...・
...Second magnetic Jλ plate patent applicant for magnetic shielding
Olympus Optical Industry Co., Ltd.
i': pa″71 small mountain I'll
Mitsuo 1, ・, + - 1,,, Direction I Z Dotori 2 Wa <A) CB) (C) Direction 3E' (A) (B) Flood 4 Figure (Elste, Do 2

Claims (1)

【特許請求の範囲】 所定の凹所を有する高透磁率磁性材ブロックと、上記凹
所に嵌合固定されたヘッド用基板と、このヘッド用基板
上に形成された主磁極薄膜と、この主磁極膜と鎖交する
導体と、 を具備してなることを特徴とする薄膜型垂直磁気ヘッド
[Claims] A block of high magnetic permeability magnetic material having a predetermined recess, a head substrate fitted and fixed in the recess, a main magnetic pole thin film formed on the head substrate, and a main magnetic pole thin film formed on the head substrate. A thin-film perpendicular magnetic head comprising: a conductor interlinked with a magnetic pole film;
JP25192685A 1984-12-03 1985-11-12 Thin film type vertical magnetic head Pending JPS62129926A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP25192685A JPS62129926A (en) 1985-11-12 1985-11-12 Thin film type vertical magnetic head
PCT/JP1985/000663 WO1986003616A1 (en) 1984-12-03 1985-12-03 Vertical magnetic head
EP85906089A EP0202343B1 (en) 1984-12-03 1985-12-03 Vertical magnetic head
DE8585906089T DE3586827T2 (en) 1984-12-03 1985-12-03 Vertical magnet head.
US07/327,258 US5003423A (en) 1984-12-03 1989-03-22 Vertical recording magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25192685A JPS62129926A (en) 1985-11-12 1985-11-12 Thin film type vertical magnetic head

Publications (1)

Publication Number Publication Date
JPS62129926A true JPS62129926A (en) 1987-06-12

Family

ID=17230024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25192685A Pending JPS62129926A (en) 1984-12-03 1985-11-12 Thin film type vertical magnetic head

Country Status (1)

Country Link
JP (1) JPS62129926A (en)

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