JPS6216219A - Thin film magnetic head - Google Patents
Thin film magnetic headInfo
- Publication number
- JPS6216219A JPS6216219A JP15482485A JP15482485A JPS6216219A JP S6216219 A JPS6216219 A JP S6216219A JP 15482485 A JP15482485 A JP 15482485A JP 15482485 A JP15482485 A JP 15482485A JP S6216219 A JPS6216219 A JP S6216219A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- layer
- thin film
- magnetic head
- magnetic layer
- 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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
薄膜磁気ヘッドにおいて、エツジノイズが発生しないよ
うに磁気ヘッド面を形成したもの。[Detailed Description of the Invention] [Summary] A thin film magnetic head whose magnetic head surface is formed to prevent edge noise from occurring.
本発明は薄膜プロセスによって構成される薄膜磁気ヘッ
ドに関するものである。The present invention relates to a thin film magnetic head constructed by a thin film process.
電子計算機の外部記憶装置として用いられる磁気ディス
ク装置等の記憶装置には、近時、記録密度の増大・コス
トダウン等を図るために、従来のいわゆるバルゲ形磁気
ヘッドに代わって薄線磁気ヘッドが四いられるようにな
った。In storage devices such as magnetic disk drives used as external storage devices for electronic computers, thin wire magnetic heads have recently been introduced to replace the conventional so-called bulge-type magnetic heads in order to increase recording density and reduce costs. Now I can have four.
ところで、磁気記憶装置は記録媒体に対し磁化反転を利
用して２値情報の査込みを行い、読取りにおいては、再
生波形中のピークを検出することによって記録媒体上の
磁化反転部を検出する。Incidentally, a magnetic storage device uses magnetization reversal to scan binary information into a recording medium, and during reading, a magnetization reversal portion on the recording medium is detected by detecting a peak in a reproduced waveform.
したがって薄膜磁気ヘッドは、記録媒体に書き込まれた
磁化反転部が再生波形中にピークとして正確に再生され
るように構成されていることが望ましい。Therefore, it is desirable that the thin film magnetic head be configured so that the magnetization reversal portion written on the recording medium is accurately reproduced as a peak in the reproduced waveform.
第３図は薄膜磁気ヘッドの従来例の構成を斜視図によっ
て表したものであり。FIG. 3 is a perspective view showing the structure of a conventional thin film magnetic head.
１は磁性基板によって形成される第一の磁性層。1 is a first magnetic layer formed by a magnetic substrate.
３は第一の磁性Ｎｌ上に絶縁層２によって他から絶縁さ
れた状態で形成された導体コイル層。3 is a conductor coil layer formed on the first magnetic Nl while being insulated from others by an insulating layer 2;
５は、一端部において絶縁層２を介し、第一の磁性層１
の一端部との間に磁気ギャップ層４を形成するとともに
、絶縁層２によって絶縁された導体コイルＮ３上に凸状
に形成される第二の磁性層である。5 is connected to the first magnetic layer 1 via the insulating layer 2 at one end.
This is a second magnetic layer formed in a convex shape on the conductor coil N3 insulated by the insulating layer 2 and forming a magnetic gap layer 4 between the conductor coil N3 and one end of the conductor coil N3.
なお、矢印ＸＸは記録媒体（図示省略）の相対走行方向
を示す。またａｂｃｄは磁気ヘッド面であり、 （ｔＪ
ＦＬｆ等によって磁気ギヤツブ屓４に対して直角に仕上
げている。Note that arrow XX indicates the relative traveling direction of the recording medium (not shown). Also, abcd is the magnetic head surface, (tJ
It is finished at right angles to the magnetic gear lug 4 using FLf or the like.
上記構成の薄膜磁気ヘッドにおいては、磁気ヘッド面ａ
ｂｃｄに磁気ギャップｅｆに平行な２本のエツジａｄと
ｂｃとが形成されている。In the thin film magnetic head having the above configuration, the magnetic head surface a
Two edges ad and bc are formed in bcd parallel to the magnetic gap ef.
これらのエツジのうちエツジｂｃは、比校的厚みのある
磁性基板によって形成された第一の磁性層１側に形成さ
れるため１面取り等によって容易に除去することができ
る。Among these edges, the edge bc is formed on the side of the first magnetic layer 1 formed of a relatively thick magnetic substrate, and therefore can be easily removed by chamfering or the like.
しかしエツジａｄは薄膜プロセスによって形成された第
二の磁性Ｍ５側に形成されるため除去することが不可能
であり、且つギヤツブｅｆとの平行度が極めて良く、ま
たシャープである。However, since the edge ad is formed on the second magnetic M5 side formed by a thin film process, it is impossible to remove it, and it is extremely parallel to the gear ef and is sharp.
その結果、エツジａｄはギャップｅｆと同様に記録媒体
から磁化反転信号を検出する。As a result, the edge ad detects a magnetization reversal signal from the recording medium in the same way as the gap ef.
この信号はエツジノイズと称され、正規の磁化反転信号
に作用して、いわゆるピークシフトを発生する。このた
め、記録媒体に書き込まれている磁化反転信号を正確に
検出できないという問題点がある。This signal is called edge noise, and acts on the normal magnetization reversal signal to generate a so-called peak shift. Therefore, there is a problem that the magnetization reversal signal written on the recording medium cannot be detected accurately.
したがって９本発明の目的は、エツジノイズによるピー
クシフトを排除することのできる薄膜磁気ヘッドを提供
することにある。Therefore, an object of the present invention is to provide a thin film magnetic head that can eliminate peak shifts caused by edge noise.
ｃ問題点を解決するだめの手段〕
平１図は本発明の原理説明図であり、築３図と共通ずる
符号は同一対象を指す。[Means for Solving Problem c] Figure 1 is an explanatory diagram of the principle of the present invention, and the same reference numerals as in Figure 3 refer to the same objects.
すなわち本発明は、実線によって示す従来例に対し１点
線によって示すように、磁気ヘッド面を第二の磁性層５
の凸状の立上がり面Ａと同一平面になるように形成した
ものである。That is, in the present invention, the magnetic head surface is covered with the second magnetic layer 5, as shown by the dotted line, in contrast to the conventional example shown by the solid line.
It is formed so as to be flush with the convex rising surface A of.
すなわち、第二の磁性層５は薄膜プロセスによって形成
されるため、その凸状に立上がったあとの肩部は滑らか
である。したがって第二の磁性層５側はにエツジノイズ
の原因になるエツジが形成されない。That is, since the second magnetic layer 5 is formed by a thin film process, the shoulder portion after rising into a convex shape is smooth. Therefore, no edges that cause edge noise are formed on the second magnetic layer 5 side.
第２図は実施例の斜視図であり、ｇｈｉｊは磁気ヘッド
面を示す。FIG. 2 is a perspective view of the embodiment, and ghij indicates the magnetic head surface.
すなわち、薄膜プロセスのあと、第二の磁性層５の立上
がり面Ａと同一平面になるように、研耶仕上げによって
磁気ヘッド面ｇ ｈ ｉ ｊを形成するとともに、第一
の磁性層１例の縁部ｈｉに面取りを施したものであり、
第二の絶縁層５例の縁部ｇｊは薄膜プロセスによって滑
らかに形成されいるためエツジが形成されていない。That is, after the thin film process, the magnetic head surface g h i j is formed by polishing so that it is flush with the rising surface A of the second magnetic layer 5, and the edge of one example of the first magnetic layer is The part hi is chamfered,
The edges gj of the five second insulating layers are formed smoothly by a thin film process, so no edges are formed.
以上説明したように９本発明によれば第二の磁性層側に
エツジノイズの原因になるエツジが形成されないので、
エツジノイズによるピークシフトの発生を防止し、磁気
記録装置において読取り精度を向上する効果が得られる
。As explained above, according to the present invention, edges that cause edge noise are not formed on the second magnetic layer side.
The effect of preventing peak shifts caused by edge noise and improving reading accuracy in a magnetic recording device can be obtained.
第１図は本発明の原理説明図。 第２図は実施例の斜視図。 第３図は従来例の斜視図を示し。 図中。 １は第一の磁性層、 ２は絶縁層。 ３は導体コイル層、 ４は磁気ギャップ層。 ５は第二の磁性層、 ｅ「は磁気ギャップ。 ａｂｅｄとｇ ｈ ｉ ｊは磁気ヘッド面を表す。 邦 １ 図 賞施−ｆ？−１ψ針才り図 第 ２ 図 FIG. 1 is a diagram explaining the principle of the present invention. FIG. 2 is a perspective view of the embodiment. FIG. 3 shows a perspective view of a conventional example. In the figure. 1 is the first magnetic layer, 2 is the insulating layer. 3 is a conductor coil layer, and 4 is a magnetic gap layer. 5 is the second magnetic layer, and e'' is the magnetic gap. abed and g h i j represent the magnetic head surface. Country 1 Figure Award-f? −1ψ needle size diagram Figure 2
Claims (1)
）上に形成される導体コイル層（３）と、一端部におい
て絶縁層（２）を介して第一の磁性層（１）の一端部と
の間に磁気ギャップ層（４）を形成するとともに前記絶
縁された導体コイル層（３）上に凸状に形成される第二
の磁性層（５）とによって構成される薄膜磁気ヘッドに
おいて、 磁気ヘッド面を第二の磁性層（５）の前記凸状の立上が
り面と同一平面になるように形成したことを特徴とする
薄膜磁気ヘッド。[Claims] A first magnetic layer (1) formed by a magnetic substrate, and a first magnetic layer (1) insulated from others by an insulating layer (2).
) A magnetic gap layer (4) is formed between the conductor coil layer (3) formed on the top of the magnetic layer (3) and one end of the first magnetic layer (1) with an insulating layer (2) interposed therebetween at one end. In a thin film magnetic head configured by a second magnetic layer (5) formed in a convex shape on the insulated conductor coil layer (3), the magnetic head surface is formed on the second magnetic layer (5). A thin film magnetic head characterized in that it is formed so as to be flush with a convex rising surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15482485A JPS6216219A (en) | 1985-07-12 | 1985-07-12 | Thin film magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15482485A JPS6216219A (en) | 1985-07-12 | 1985-07-12 | Thin film magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6216219A true JPS6216219A (en) | 1987-01-24 |
Family
ID=15592676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15482485A Pending JPS6216219A (en) | 1985-07-12 | 1985-07-12 | Thin film magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6216219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03214410A (en) * | 1990-01-18 | 1991-09-19 | Matsushita Electric Ind Co Ltd | Thin-film magnetic head |
-
1985
- 1985-07-12 JP JP15482485A patent/JPS6216219A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03214410A (en) * | 1990-01-18 | 1991-09-19 | Matsushita Electric Ind Co Ltd | Thin-film magnetic head |
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