JPS59203216A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS59203216A
JPS59203216A JP7850183A JP7850183A JPS59203216A JP S59203216 A JPS59203216 A JP S59203216A JP 7850183 A JP7850183 A JP 7850183A JP 7850183 A JP7850183 A JP 7850183A JP S59203216 A JPS59203216 A JP S59203216A
Authority
JP
Japan
Prior art keywords
head
thin film
track
film magnetic
reproducing
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
JP7850183A
Other languages
Japanese (ja)
Inventor
Munehito Kumagai
宗人 熊谷
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7850183A priority Critical patent/JPS59203216A/en
Publication of JPS59203216A publication Critical patent/JPS59203216A/en
Pending legal-status Critical Current

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
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read

Landscapes

  • Magnetic Heads (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To prevent the head efficiency from being degraded too much by shifting a track position of a recording inductive head and that of a reproducing MR head from each other in the track breadthwise direction. CONSTITUTION:With respect to a composite thin film magnetic head 14, a track position 14a of the recording inductive head, a track position 14b of the reproducing MR head, a track width Tw1 of the recording inductive head, a track width Tw2 of the reproducing MR head, and optional tracks Tn1 and Tn2 are shown in Fig. The recording inductive head and the reproducing MR head are so combined that track positions 14a and 14b of respective heads are shifted slightly from each other in the track breadthwise direction, thus contituting the thin film magnetic head.

Description

【発明の詳細な説明】 この発明は、記録用インダクテイブヘッドと再生用ＭＲ
ヘッドを積層し、複合して成る薄膜磁気ヘッドに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an inductive head for recording and an MR for reproduction.
The present invention relates to a thin-film magnetic head that is formed by laminating and combining heads.

従来この種の薄膜磁気ヘッドとしては、第１図に示すも
のがあった。第１図は従来の薄膜磁気ヘッドの構成を一
部分解して示す斜視図である。図において、１は基板、
２はシールド用磁性層、３ａ。A conventional thin film magnetic head of this type is shown in FIG. FIG. 1 is a partially exploded perspective view showing the structure of a conventional thin film magnetic head. In the figure, 1 is a substrate,
2 is a magnetic layer for shielding, and 3a.

３ｂ　、３ｃは絶縁層、４はバイアス磁界発生コイル、
５はバイアス磁界発生コイル４に電流を流すだめの端子
、６はＭＲ素子（磁気抵抗素子）、７はＭＲ素子６に電
流を流し、信号を取出す端子、８は記録用インダクテイ
ブヘッドのコアシールド兼再生用ＭＲヘッドのコアの磁
性層、９は信号記録用コイル、１０は信号記録用コイル
９に電流を流すための端子、１１は磁性層８と磁気的に
結合された記録用インダクテイブヘッドのコアの磁性層
、ＴＷＩは記録用インダクテイブヘッドのトラック幅、
Ｔｗ□は再生用ＭＲヘッドのトラック幅、Ａは媒体対向
面、■ｂはバイアス電流、■５は信号検知電流である。3b and 3c are insulating layers, 4 is a bias magnetic field generating coil,
5 is a terminal for passing current through the bias magnetic field generating coil 4, 6 is an MR element (magnetoresistive element), 7 is a terminal for passing current through the MR element 6 and outputting a signal, and 8 is a core of the recording inductive head. 9 is a signal recording coil, 10 is a terminal for passing current through the signal recording coil 9, and 11 is a recording inductor magnetically coupled to the magnetic layer 8. TWI is the magnetic layer of the core of the inductive recording head, and TWI is the track width of the recording inductive head.
Tw□ is the track width of the reproducing MR head, A is the surface facing the medium, ■b is the bias current, and ■5 is the signal detection current.

第２図は第１図の薄膜磁気ヘッドにおけるトラック位置
関係図である。図において、１２は第１図に示した複合
された薄膜磁気ヘッド、１２ａは記録用インダクテイブ
ヘッドのトラック位置、１２ｂは再生用ＭＲヘッドのト
ラック位置、１３は制御信号再生用ヘッド、Ｗは媒体上
に記録されたトラツク幅、ＴＷｌは記録用インダクテイ
ブヘッドのトラック幅、１ｗ２は再生用Ｍ　Ｒヘッドの
トラック幅、Ｄはトラック間隔、Ｔｎ１Ｔｎ２は任意の
トラックをそれぞれ示している。FIG. 2 is a track position relationship diagram in the thin film magnetic head of FIG. 1. In the figure, 12 is the composite thin film magnetic head shown in FIG. 1, 12a is the track position of the recording inductive head, 12b is the track position of the reproducing MR head, 13 is the control signal reproducing head, and W is the track position of the recording inductive head. The track width recorded on the medium, TWl is the track width of the recording inductive head, 1w2 is the track width of the reproducing MR head, D is the track interval, and Tn1Tn2 is an arbitrary track.

次に、上記した従来の薄膜磁気ヘッドの動作について説
明する。信号記録時には、端子１０よシ信号電流が印加
されると、信号記録用コイル９に磁界が発生され、これ
により、磁束は各磁性層８゜１１の媒体対向面Ａ側の磁
気ギャップよシ媒体（共に図示しない）上に漏えいして
記録される。また、信号再生時には、媒体よシの磁束は
ＭＲ素子６を通り再び媒体に戻る。−１この磁束によっ
てＭＲ素子６の抵抗が変化し、このＭ　Ｒ素子６の抵抗
変化は、端子７を通じてＭＲ素子６に流す信号検知電流
■８によって生じる両端の電圧変化として読み出される
。ここで、端子５より流すバイアス電流Ｉｂにより、バ
イアス磁界発生コイル４から発生するバイアス磁界は、
ＭＲ素子６の動作特性を直線的にするだめのものである
。Next, the operation of the conventional thin film magnetic head described above will be explained. During signal recording, when a signal current is applied to the terminal 10, a magnetic field is generated in the signal recording coil 9, and as a result, the magnetic flux is transferred from the magnetic gap on the medium facing surface A side of each magnetic layer 8 to the medium. (both not shown) are leaked and recorded. Furthermore, during signal reproduction, the magnetic flux from the medium passes through the MR element 6 and returns to the medium. -1 The resistance of the MR element 6 changes due to this magnetic flux, and this resistance change of the MR element 6 is read out as a voltage change at both ends caused by a signal detection current 8 passed through the MR element 6 through the terminal 7. Here, the bias magnetic field generated from the bias magnetic field generating coil 4 due to the bias current Ib flowing from the terminal 5 is as follows.
This is to make the operating characteristics of the MR element 6 linear.

従来の薄膜磁気ヘッドは以上の様に構成されているので
、第２図に示す様に、信号再生時に、薄膜磁気ヘッド１
２を正確に媒体の記録トラック上に配置させるためには
、この薄膜磁気ヘッド１２と一体に構成された制御信号
再生用ヘッド１３を設けて位置制御を行わなければなら
ないという欠点があった。Since the conventional thin film magnetic head is constructed as described above, as shown in FIG.
In order to accurately position the thin film magnetic head 2 on the recording track of the medium, a control signal reproducing head 13 integrated with the thin film magnetic head 12 must be provided to perform position control.

この発明は上記の様な従来のものの欠点を除去するため
になされたもので、記録用インダクテイブヘッドと再生
用ＭＲヘッドのそれぞれのトラック位置を若干ずらせて
積層し、信号再生時に、前記記録用インダクテイブヘッ
ドを制御信号取出しヘッドとして用い、前記再生用ＭＲ
ヘッドを情報信号兼制御信号取出しヘッドとして用いる
様にして成る構成を有し、薄膜磁気ヘッドに後から一体
に構成される制御信号再生用ヘッドを不要にすることが
できる薄膜磁気ヘッドを提供することを目的としている
。This invention was made in order to eliminate the above-mentioned drawbacks of the conventional ones, and the inductive head for recording and the MR head for reproduction are stacked with their respective track positions slightly shifted, and when a signal is reproduced, the recording The inductive head for the reproducing MR is used as a control signal extraction head.
To provide a thin film magnetic head having a configuration in which the head is used as an information signal and control signal extraction head, and which eliminates the need for a control signal reproducing head which is later integrated into the thin film magnetic head. It is an object.

以下、この発明の一実施例を図について説明°する。第
３図はこの発明の一実施例である薄膜磁気ヘッドにおけ
るトラック位置関係図である。図において、１４ばこの
発明の複合された薄膜磁気ヘッド、１４ａは記録用イン
ダクテイブヘッドのトラック位置、１４ｂは再生用ＭＲ
ヘッドのトラック位置、Ｔｗｌけ記録用インダクテイブ
ヘッドのトラック幅、Ｔｗ□は再生用ＭＲヘッドのトラ
ック幅％Ｔｎｌ。An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a track position relationship diagram in a thin film magnetic head which is an embodiment of the present invention. In the figure, 14 is a composite thin film magnetic head of the present invention, 14a is a track position of an inductive head for recording, and 14b is an MR for reproduction.
The track position of the head, Twl is the track width of the recording inductive head, and Tw□ is the track width %Tnl of the reproducing MR head.

Ｔｎ２は任意のトラックをそれぞれ示している。上記し
たこの発明の薄膜磁気ヘッドの構成は、第１図に示す薄
膜磁気ヘッドにおいて、複合された記録用インダクテイ
ブヘッドと再生用ＭＲヘッドを、第３図に示す様に、そ
れぞれ記録用インダクテイブヘッドのトラック位置１４
ａと再生用ＭＲヘッドのトラック位置１４ｂとの位置関
係を、トラック幅方向に若干ずらして配置する様に複合
して構成されている。Tn2 each indicates an arbitrary track. The structure of the thin film magnetic head of the present invention described above is such that, in the thin film magnetic head shown in FIG. Tab head track position 14
The positional relationship between a and the track position 14b of the reproduction MR head is arranged so as to be slightly shifted in the track width direction.

次に、上記したこの発明の薄膜磁気ヘッドの動作につい
て述べると、上記の第１図に示される従来の薄）１α磁
気ヘツドと同様の動作をするので、その詳細な説明は省
略する。しかして、この発明の薄膜磁気ヘッドでは、記
録用インダクテイブヘッドのトラック位置１４ａ、と再
生用ＭＲ，ヘッドのトラック位置１４ｂとの位置関係を
、トラック幅方向に若干ずらして構成し、トラック位置
決めに必要な制御信号取出しヘッドとして、記録用イン
ダクティブヘッドを利用し、この記録用インダクティブ
ヘッドの信号記録用コイル９で発生した電圧を端子１０
より取出すこ〆ができる様にしたので、上記第１図に示
す従来の薄膜磁気ヘッドの様に、後から一体構成される
制御信号再生用ヘッド１３は必要としないで済む。Next, the operation of the above-mentioned thin film magnetic head of the present invention will be described. Since the operation is similar to that of the conventional thin film magnetic head shown in FIG. 1, a detailed explanation thereof will be omitted. Therefore, in the thin film magnetic head of the present invention, the positional relationship between the track position 14a of the recording inductive head and the track position 14b of the reproducing MR head is slightly shifted in the track width direction. An inductive head for recording is used as a head for extracting control signals necessary for
Since the magnetic head can be taken out more easily, there is no need for the control signal reproducing head 13, which is integrated later, as in the conventional thin film magnetic head shown in FIG.

以上の様に、この発明の薄膜磁気ヘッドによれば、記録
用インダクティブヘッドのトラック位置と再生用ＭＲヘ
ッドのトラック位置との位置関係−を、トラック幅方向
に若干ずらせて配設し、前記記録用インダクティブヘッ
ドを制御信号取出しヘッドとして用い、前記再生用ＭＲ
ヘッドを情報信号兼側゛御信号取出しヘッドとして用い
る様にして成る構成としたので、従来のこの種の薄膜磁
気ヘッドで、後から一体構成される制御信号再生用ヘッ
ドが必要と無くなり、このため、簡単に構成できる上に
、ヘッド効率の低下を軽減し得るという優れた効果を奏
するものである。As described above, according to the thin film magnetic head of the present invention, the positional relationship between the track position of the recording inductive head and the track position of the reproducing MR head is slightly shifted in the track width direction, and the recording The inductive head for reproduction is used as a control signal extraction head, and the reproduction MR
Since the head is configured to be used as both an information signal side and a control signal extraction head, there is no need for a control signal reproducing head that is integrated later in conventional thin film magnetic heads of this type. , which can be easily constructed and has the excellent effect of reducing head efficiency deterioration.

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

第１図は従来の薄膜磁気ヘッドの構成を一部分解して示
す斜視図、第２図は第１図の薄膜磁気ヘッドにおけるト
ラック位置関係図、第３図はこの発明の一実施例である
薄膜磁気ヘッドにおけるトラック位置関係図である。 図において、１・・・基板、２・・・シールド用磁性層
、３ａ、３ｂ、３ｃ・・・絶縁層、４・・・バイアス磁
界発生コイル、５，７．１０・・・端子、６・・・ＭＲ
素子、８．１１・・・磁性層、９・・・信号記録用コイ
ル、１２゜１４−・・薄膜磁気ヘッド、１２ａ、　１２
ｂ、　１４ａ、　ｉ４ｂ　ニー・トラック位置、１３・
・・制御信号再生用ヘッド、Ｔｗ□Ｔｗ２Ｗ・−・トラ
ック幅、Ｄ・・・トラック間隔、Ｔｎ１Ｔｎ２・−・ト
ラックである。 なお、図中、同一符号は同一、又は相当部分を示す。 代理人　大岩増雄 第１図 第２図 ３ 粥３図FIG. 1 is a partially exploded perspective view showing the structure of a conventional thin film magnetic head, FIG. 2 is a track position relationship diagram in the thin film magnetic head shown in FIG. 1, and FIG. 3 is a thin film showing an embodiment of the present invention. FIG. 3 is a track position relationship diagram in a magnetic head. In the figure, 1... Substrate, 2... Magnetic layer for shielding, 3a, 3b, 3c... Insulating layer, 4... Bias magnetic field generating coil, 5, 7. 10... Terminal, 6...・MR
Element, 8.11... Magnetic layer, 9... Signal recording coil, 12° 14-... Thin film magnetic head, 12a, 12
b, 14a, i4b knee track position, 13.
... control signal reproducing head, Tw□Tw2W -- track width, D -- track interval, Tn1Tn2 -- track. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Masuo Oiwa Figure 1 Figure 2 Figure 3 Porridge Figure 3

Claims (1)

【特許請求の範囲】[Claims] 記録用インダクテイブヘッドと再生用ＭＲ，ヘッドを積
層して成る薄膜磁気ヘッドにおいて、前記記録用インダ
クテイブヘッドと再生用ＭＲヘッドのそれぞれのトラッ
ク位置を若干ずらせて積層し、信号再生時に、前記記録
用インダクテイブヘッドを制御信号取出しヘッドとして
用い、前記再生用ＭＲヘッドを情報信号兼制御信号取出
しヘッドとして用いる様にして成ることを特徴とする薄
膜磁気ヘッド。In a thin film magnetic head comprising a recording inductive head, a reproducing MR head, and a laminated head, the recording inductive head and the reproducing MR head are laminated with their respective track positions slightly shifted, and when reproducing a signal, A thin film magnetic head characterized in that the recording inductive head is used as a control signal extraction head, and the reproduction MR head is used as an information signal and control signal extraction head.
JP7850183A 1983-05-04 1983-05-04 Thin film magnetic head Pending JPS59203216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7850183A JPS59203216A (en) 1983-05-04 1983-05-04 Thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7850183A JPS59203216A (en) 1983-05-04 1983-05-04 Thin film magnetic head

Publications (1)

Publication Number Publication Date
JPS59203216A true JPS59203216A (en) 1984-11-17

Family

ID=13663701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7850183A Pending JPS59203216A (en) 1983-05-04 1983-05-04 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS59203216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202316A (en) * 1985-03-04 1986-09-08 Nec Corp Thin film magnetic head for buried servo system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202316A (en) * 1985-03-04 1986-09-08 Nec Corp Thin film magnetic head for buried servo system
JPH0527165B2 (en) * 1985-03-04 1993-04-20 Nippon Electric Co

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