JPH1083513A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPH1083513A
JPH1083513A JP24012196A JP24012196A JPH1083513A JP H1083513 A JPH1083513 A JP H1083513A JP 24012196 A JP24012196 A JP 24012196A JP 24012196 A JP24012196 A JP 24012196A JP H1083513 A JPH1083513 A JP H1083513A
Authority
JP
Japan
Prior art keywords
magnetic
track width
metal magnetic
gap
recording
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
JP24012196A
Other languages
Japanese (ja)
Inventor
Takeo Yamashita
武夫 山下
Kenkichi Inada
健吉 稲田
Shiyuuzou Sasajima
崇三 笹嶋
Yasuyuki Arikawa
康之 有川
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP24012196A priority Critical patent/JPH1083513A/en
Publication of JPH1083513A publication Critical patent/JPH1083513A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Heads (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve recording characteristics of a magnetic head in which metal magnetic films are joined with a gap between to constitute a track width by forming at least the joining part of the core half body for the track to be larger than the track width. SOLUTION: Metal magnetic films 2, 12 are joined on the gap sides of ferrite core half bodies 1, 11 to constitute a composite core, and a gap 3 is formed between the metal magnetic films. The metal magnetic films are formed by using a sputtering device on the ferrite core half bodies 1, 11, respectively, in such a manner that the metal magnetic films form arcs on the edges of the track width where the gap is formed. Then the metal magnetic films 2, 12 are joined with a nonmagnetic gap material is interposed to form the track width. Since the metal magnetic films on the track edges are formed into arc shape, the metal magnetic films are formed on the end sides of the track width.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は磁気記録再生に用いられ
る磁気ヘッドに関する。特にビデオテ−プレコ−ダ(V
TR)やデ−タレコ−ダなどに用いる高保磁力媒体に適
した磁気ヘッドに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head used for magnetic recording and reproduction. In particular, a video tape recorder (V
TR) and a magnetic head suitable for a high coercive force medium used for a data recorder and the like.

【0002】[0002]

【従来の技術】近年高密度磁気記録の進歩は著しく、記
録密度の増加により装置の小型化、高性能化が進んでい
る。高密度磁気記録再生装置においては磁気記録媒体の
保磁力(Hc)を高くすることが有利であることは良く
知られている。そのため、近年VTRなどではHcが1
500Oe以上のメタル粉塗布テ−プ、メタル蒸着テ−
プなどが実用化され、また、Hc2500Oe以上の記
録媒体が検討されている。このような高Hc媒体に信号
を記録するには磁気ヘッドコア材に高飽和磁束密度を有
する金属磁性膜、例えばFeSiAl(センダスト)、
CoNbZr(アモルファス合金)Fe系微結晶膜など
を用いて主磁極とし、従来のフェライトと複合した磁気
ヘッド種々実用化されている。
2. Description of the Related Art In recent years, the progress of high-density magnetic recording has been remarkable, and as the recording density has increased, the size and performance of apparatuses have been reduced. It is well known that in a high-density magnetic recording / reproducing apparatus, it is advantageous to increase the coercive force (Hc) of a magnetic recording medium. Therefore, in recent years, Hc is 1
Metal powder coating tape of 500 Oe or more, metal evaporation tape
And a recording medium of Hc 2500 Oe or more are being studied. In order to record a signal on such a high Hc medium, a metal magnetic film having a high saturation magnetic flux density such as FeSiAl (Sendust),
Various magnetic heads that have been used as a main magnetic pole using a CoNbZr (amorphous alloy) Fe-based microcrystalline film or the like and combined with a conventional ferrite have been put to practical use.

【0003】また、高密度化に伴って記録線密度のみで
なく、記録トラック幅の狭小化が進んでおり、これに対
応した狭ギャップ、狭トラックで強い急峻な磁界を発生
できる磁気ヘッドが要求されている。このような磁気ヘ
ッドには例えば、特開平4−030308号などが挙げ
られる。
[0003] Further, as the recording density is increased, not only the recording linear density but also the recording track width is becoming narrower. Accordingly, a magnetic head capable of generating a strong steep magnetic field with a narrow gap and a narrow track is required. Have been. Such a magnetic head is disclosed in, for example, JP-A-4-030308.

【0004】以下、図面を用いて従来例を説明する。A conventional example will be described below with reference to the drawings.

【0005】図5は従来の複合コアを用いた磁気ヘッド
の概観図、図6はテ−プ摺動面の拡大図である。これら
の図においてフェライトコア半体(1、11)のギャッ
プ側先端部には金属磁性体(2、12)が形成され、そ
れぞれ磁気コア半体(1、11)が構成されている。磁
気コア半体の金属磁性面側にSiO2膜等のギャップ材
を介して突合せ磁気ギャップ(3)となるように構成さ
れる。
FIG. 5 is a schematic view of a magnetic head using a conventional composite core, and FIG. 6 is an enlarged view of a tape sliding surface. In these figures, a metal magnetic body (2, 12) is formed at the tip of the ferrite core half (1, 11) on the gap side, and the magnetic core half (1, 11) is formed. A magnetic gap (3) is formed on the metal magnetic surface side of the magnetic core half with a gap material such as an SiO 2 film interposed therebetween.

【0006】さらに、磁気ギャップを形成した磁気テ−
プ摺動面から、トラック幅(Tw)部(5)を残して両
端から平行にトラック幅規制溝を形成し、この溝に非磁
性材例えばセラミック(6、16)が充填されている。
Further, a magnetic tape having a magnetic gap formed therein is provided.
A track width regulating groove is formed in parallel from both ends except a track width (Tw) portion (5) from the sliding surface of the step, and this groove is filled with a non-magnetic material such as ceramics (6, 16).

【0007】このような構造ヘッドはトラック幅は摺動
面規制溝で形成するのでトラック幅ずれを防止し、狭ト
ラック幅を容易に実現できる。また、トラック幅ずれが
ないために隣接、隣隣接の記録トラックからのクロスト
−クが抑制され、記録再生特性に優れる磁気ヘッドであ
る。
In such a structured head, since the track width is formed by the sliding surface regulating groove, the track width is prevented from shifting, and a narrow track width can be easily realized. Further, since there is no track width deviation, crosstalk from adjacent and adjacent recording tracks is suppressed, and the magnetic head is excellent in recording / reproducing characteristics.

【0008】さらに記録特性を良くするために磁気ギャ
ップ近傍に配設した金属磁性膜の体積を規制した特許に
特開平7−136342、特開平7−337150があ
る。
[0008] Japanese Patent Application Laid-Open Nos. Hei 7-136342 and Hei 7-337150 disclose patents in which the volume of the metal magnetic film disposed near the magnetic gap is regulated to further improve the recording characteristics.

【0009】[0009]

【発明が解決しようとする課題】しかしながら従来磁気
ヘッドにおいては以下に述べるような問題点があった。
記録、再生を同一ヘッドで行なうように考えられたもの
で、記録ヘッドとしてはまだ充分ではない。すなわち、
高記録線密度、高トラック密度になってくると記録媒体
上に記録される磁化状態は反磁界のために縮小される。
この現象は磁気ヘッド、記録媒体の特性および記録条件
によって大きく影響をうけるが、磁気ヘッドのギャップ
長が小さく、しかもトラック幅が狭くなってくると記録
されるトラック幅が不鮮明になってくる。ヘッドのトラ
ック幅が狭くなるに従ってますますこの傾向が強くな
る。このため、狭トラックヘッドにおいては記録トラッ
ク幅全体に亘ってますます強い急峻なヘッド磁界を得る
必要がある。
However, the conventional magnetic head has the following problems.
Recording and reproduction are considered to be performed by the same head, and are not yet sufficient as a recording head. That is,
As the recording linear density and the track density increase, the magnetization state recorded on the recording medium is reduced due to the demagnetizing field.
This phenomenon is greatly affected by the characteristics of the magnetic head and the recording medium and the recording conditions. However, when the gap length of the magnetic head is small and the track width is narrow, the recorded track width becomes unclear. This tendency becomes more pronounced as the track width of the head becomes narrower. Therefore, in a narrow track head, it is necessary to obtain an increasingly strong and steep head magnetic field over the entire recording track width.

【0010】磁気ヘッドの磁気飽和を防ぎ、強い急峻な
磁界は飽和磁束密度の小さいフェライトで構成されるコ
ア本体を補助するギャップ近傍の高飽和磁束密度の金属
磁性膜の体積によって左右され、金属磁性膜が厚い場合
は磁気飽和を生じにくく、逆に金属磁性膜が薄い場合に
は磁気飽和を起こしやすくなる。また、トラック幅全体
にわたって強い急峻な磁界を得るにはトラック幅内はも
とよりトラック幅外の構造が重要になってくる。従って
従来のヘッド構造は再生のクロスト−クを重要視し、ト
ラックずれを極端におさえたヘッドであるため、たとえ
高飽和磁束密度の材料を配置してもその効果は発揮され
ない。
Preventing magnetic saturation of the magnetic head, the strong and steep magnetic field depends on the volume of the high saturation magnetic flux density metal magnetic film near the gap which assists the core body made of ferrite having a low saturation magnetic flux density. When the film is thick, magnetic saturation does not easily occur. Conversely, when the metal magnetic film is thin, magnetic saturation easily occurs. Further, in order to obtain a strong steep magnetic field over the entire track width, a structure outside the track width as well as within the track width becomes important. Therefore, in the conventional head structure, the reproduction crosstalk is regarded as important, and the track deviation is extremely suppressed. Therefore, even if a material having a high saturation magnetic flux density is arranged, the effect is not exhibited.

【0011】従って本発明の目的は上述の問題点を解消
することにあって、記録、再生を分離して、少なくとも
記録特性が良好な磁気ヘッドを提供することにある。
Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a magnetic head having good recording characteristics at least by separating recording and reproduction.

【0012】[0012]

【課題を解決するための手段】上記問題を解決し、磁気
ヘッドの記録特性を良好にするには次のような構造のヘ
ッドにする。
In order to solve the above problem and improve the recording characteristics of the magnetic head, a head having the following structure is used.

【0013】1)ギャップをはさんで金属磁性膜同志が
突合せトラック幅を構成するヘッドにおいて、少なくて
もコア半体のトラック(Tw)突合せ部をトラック幅よ
り大きくする。
1) In the head in which the metal magnetic films constitute the butting track width across the gap, at least the track (Tw) butting portion of the core half is made larger than the track width.

【0014】2)ギャップをはさんで金属磁性膜同志が
突合せトラック幅を構成するヘッドにおいて、トラック
幅外端の金属磁性膜体積がギャップから離れるに従って
円弧52状に大きく形成する。
2) In a head in which the metal magnetic films abut each other across the gap to form a track width, the volume of the metal magnetic film at the outer end of the track width becomes larger in the shape of an arc 52 as the distance from the gap increases.

【0015】3)ガ−ドバンドレス、アジマス記録にお
いて重ね書き部分の記録を少なくとも、トラックずれが
ある側でおこなう。
3) In the guard bandless and azimuth recording, the recording of the overwritten portion is performed at least on the side where the track is shifted.

【0016】[0016]

【発明の実施の形態】以下、本発明の磁気ヘッドの実施
の形態を図を用いて詳細に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the magnetic head of the present invention will be described below in detail with reference to the drawings.

【0017】図1および図2は本発明をVTR用の複合
型磁気ヘッドに実施した1例を示している。図1は磁気
ヘッドの概観図、図2にテ−プ摺動面の拡大図を示す。
これらの図において、(1)、(11)はフェライトコ
ア、(2)、(12)はFeTaCからなる微結晶金属
磁性膜、(3)はCr23などのギャップ、(4)、
(14)はガラス、(5)はトラック幅を示す。フェラ
イトコア半体(1)、(11)のギャップ側には金属磁
性膜(2)、(12)がそれぞれ接合されて複合コアを
構成しており、金属磁性膜間にギャップG(3)が形成
されている。金属磁性膜はフェライト半体上にスパッタ
装置などを用いて形成し、ギャップを形成する金属磁性
面のトラック幅端は円弧状にする。その後非磁性ギャッ
プ材を介して金属磁性膜を突合せ、トラック幅(5)を
形成する。トラック幅端の金属磁性膜が円弧状になって
いるためにトラック幅端側 Δ(7)に金属磁性膜が形
成される。
FIGS. 1 and 2 show an embodiment in which the present invention is applied to a composite magnetic head for a VTR. FIG. 1 is a schematic view of a magnetic head, and FIG. 2 is an enlarged view of a tape sliding surface.
In these figures, (1) and (11) are ferrite cores, (2) and (12) are microcrystalline metal magnetic films made of FeTaC, (3) is a gap of Cr 2 O 3 or the like, (4),
(14) indicates glass, and (5) indicates a track width. Metal magnetic films (2) and (12) are respectively joined to the gap sides of the ferrite core halves (1) and (11) to form a composite core, and a gap G (3) is formed between the metal magnetic films. Is formed. The metal magnetic film is formed on the ferrite half using a sputtering device or the like, and the track width end of the metal magnetic surface forming the gap is formed in an arc shape. Thereafter, the metal magnetic films are butted through the non-magnetic gap material to form a track width (5). Since the metal magnetic film at the track width end has an arc shape, the metal magnetic film is formed on the track width end side Δ (7).

【0018】表1は本発明の磁気ヘッドのトラック幅端
側の金属磁性膜の大きさと記録特性を調べた結果であ
る。磁気テ−プはHc1550Oeのメタル粉塗布テ−
プを用い、相対速度3.8m/s、記録周波数7MH
z、最適記録電流で記録した。磁気ヘッドはトラック幅
22μm、ギャップ長0.20μmである。上述の記録
条件で磁気テ−プに記録し、記録パタ−ンをビッタ法及
びスピンSEM法で観察し、トラック端の不鮮明領域と
磁気ヘッドのトラック幅端側の金属磁性膜のはみ出した
大きさ(Δ)の関係を示したものである。
Table 1 shows the results of examination of the size and recording characteristics of the metal magnetic film on the track width end side of the magnetic head of the present invention. Magnetic tape is Hc1550 Oe metal powder coated tape
3.8m / s relative speed, recording frequency 7MH
z, recording was performed at the optimum recording current. The magnetic head has a track width of 22 μm and a gap length of 0.20 μm. Recording was performed on a magnetic tape under the above-mentioned recording conditions, and the recording pattern was observed by a bitter method and a spin SEM method. (Δ) is shown.

【0019】なお、磁気ヘッドのトラック幅端側の金属
磁性膜のはみ出した大きさのコントロ−ルは種々ある。
その1つとして、フェライト半体のトラック幅溝形成の
段階で溝傾斜を変えること。また、スパッタ装置を用い
て金属磁性膜を成膜する際に、スパッタ条件を変えても
コントロ−ル出来るが、ここでは簡単に出来る金属磁性
膜の厚さを変えてコントロ−ルした。
There are various types of control of the size of the metal magnetic film protruding from the track width end side of the magnetic head.
One of them is to change the groove inclination at the stage of forming the track width groove of the ferrite half. In addition, when a metal magnetic film is formed by using a sputtering apparatus, control can be performed by changing sputtering conditions. In this embodiment, the thickness of the metal magnetic film, which can be easily controlled, is changed.

【0020】[0020]

【表1】 [Table 1]

【0021】表からわかる様に本発明ヘッドの記録パタ
−ンは従来のヘッドに比べて、トラック端の記録の不鮮
明さが少なく記録が良好であることがわかる。
As can be seen from the table, the recording pattern of the head according to the present invention has less blurring of the recording at the end of the track and is excellent in recording as compared with the conventional head.

【0022】本発明ヘッドをVTRガ−ドバンドレスア
ジマス記録である8mm仕様トラック幅22μm、トラ
ックピッチ19μmで記録再生した。但し、記録ヘッド
に本発明ヘッドで金属磁性膜はみ出し量(Δ)4μmを
使用し、再生ヘッドには従来の図5の構造ヘッドを用い
た。結果は従来ヘッドのみの記録再生に比較して、クロ
スト−クが3dB、出力が1dB向上した。
The head of the present invention was recorded / reproduced at a track width of 22 μm and a track pitch of 19 μm, which is a VTR guard bandless azimuth recording of 8 mm specification. However, the protrusion of the metal magnetic film (Δ) of 4 μm was used for the recording head of the present invention, and the conventional structure head of FIG. 5 was used for the reproducing head. As a result, the crosstalk and the output were improved by 3 dB and 1 dB, respectively, as compared with the recording and reproduction of the conventional head alone.

【0023】図3は本発明をVTR用の複合型磁気ヘッ
ドに実施した1例を示している。
FIG. 3 shows an example in which the present invention is applied to a composite magnetic head for a VTR.

【0024】同図3はテ−プ摺動面の拡大図を示す。こ
れらの図において、(1)、(11)はフェライトコ
ア、(2)、(12)はFeTaCからなる微結晶金属
磁性膜、(3)はCr23などのギャップ、(4)、
(14)はガラス、(5)はトラック幅を示す。フェラ
イトコア半体(1)、(11)のギャップ側には金属磁
性膜(2)、(12)がそれぞれ接合されて複合コアを
構成しており、金属磁性膜間にギャップG(3)が形成
されている。金属磁性膜はフェライト半体上にスパッタ
装置などを用いて形成し、ギャップを形成する金属磁性
面のトラック幅端は円弧状になる。次に金属磁性面を研
磨装置等で研磨し平坦にする。その後非磁性ギャップ材
を介して金属磁性膜を突合せて、トラック幅(5)を形
成する。金属磁性膜を突合せる際にトラック幅をずらせ
ると、トラック幅端側にトラック幅より外側に、はみ出
した Δ(7)金属磁性膜が形成される。
FIG. 3 is an enlarged view of the tape sliding surface. In these figures, (1) and (11) are ferrite cores, (2) and (12) are microcrystalline metal magnetic films made of FeTaC, (3) is a gap of Cr 2 O 3 or the like, (4),
(14) indicates glass, and (5) indicates a track width. Metal magnetic films (2) and (12) are respectively joined to the gap sides of the ferrite core halves (1) and (11) to form a composite core, and a gap G (3) is formed between the metal magnetic films. Is formed. The metal magnetic film is formed on the ferrite half using a sputtering device or the like, and the track width end of the metal magnetic surface forming the gap has an arc shape. Next, the metal magnetic surface is polished with a polishing device or the like to make it flat. Thereafter, a metal magnetic film is butted through a non-magnetic gap material to form a track width (5). If the track width is shifted when the metal magnetic films are abutted, a protruding Δ (7) metal magnetic film is formed at the end of the track width outside the track width.

【0025】表2は本発明の磁気ヘッドのトラック幅端
側の金属磁性膜の大きさと記録特性を調べた結果であ
る。磁気テ−プはHc1550Oeのメタル粉塗布テ−
プを用い、相対速度3.8m/s、記録周波数7MH
z、最適記録電流で記録した。磁気ヘッドはトラック幅
22μm、ギャップ長0.20μmである。上述の記録
条件で磁気テ−プに記録し、記録パタ−ンをビッタ法及
びスピンSEM法で観察し、トラック端の不鮮明領域と
磁気ヘッドのトラック幅端側の金属磁性膜のはみ出した
大きさ(Δ)の関係を示したものである。なお、磁気ヘ
ッドのトラック幅端側の金属磁性膜のはみ出した大きさ
のコントロ−ルはトラック突合せの際のずれ量を変えて
コントロ−ルした。
Table 2 shows the results of investigation of the size and recording characteristics of the metal magnetic film on the track width end side of the magnetic head of the present invention. Magnetic tape is Hc1550 Oe metal powder coated tape
3.8m / s relative speed, recording frequency 7MH
z, recording was performed at the optimum recording current. The magnetic head has a track width of 22 μm and a gap length of 0.20 μm. Recording was performed on a magnetic tape under the above-mentioned recording conditions, and the recording pattern was observed by a bitter method and a spin SEM method. (Δ) is shown. The control of the protrusion of the metal magnetic film on the track width end side of the magnetic head was controlled by changing the amount of deviation at the time of track abutment.

【0026】[0026]

【表2】 [Table 2]

【0027】表からわかる様に本発明ヘッドの記録パタ
−ンは従来のヘッドに比べて、トラック端の記録の不鮮
明さが少なく記録が良好であることがわかる。
As can be seen from the table, the recording pattern of the head of the present invention has less blurring of recording at the track end and good recording as compared with the conventional head.

【0028】本発明ヘッドをVTRガ−ドバンドレスア
ジマス記録である8mm仕様トラック幅22μm、トラ
ックピッチ19μmで記録再生した。但し、記録ヘッド
に本発明ヘッドで金属磁性膜はみ出し量(Δ)4μmを
使用し、再生ヘッドには従来の図5の構造ヘッドを用い
た。結果は従来ヘッドのみの記録再生に比較して、クロ
スト−クが1.5dB、出力が0.5dB向上した。
The head of the present invention was recorded / reproduced at a track width of 22 μm and a track pitch of 19 μm, which are VTR guard-bandless azimuth recording of 8 mm specification. However, the protrusion of the metal magnetic film (Δ) of 4 μm was used for the recording head of the present invention, and the conventional structure head of FIG. 5 was used for the reproducing head. As a result, the crosstalk and the output were improved by 1.5 dB and 0.5 dB, respectively, as compared with the recording and reproduction of the conventional head alone.

【0029】VTRガ−ドバンドレスアジマス記録した
場合、記録ヘッドの重ね書きするトラック幅端のみ金属
磁性膜がはみ出した側にしてもその効果は変わらず、良
好な記録特性クロスト−ク特性が得られた。
In the case of VTR guard bandless azimuth recording, the effect does not change even if the metal magnetic film protrudes only at the track width end of the recording head where overwriting is performed, and good recording characteristics and crosstalk characteristics can be obtained. Was.

【0030】トラック幅端より金属磁性膜がはみ出させ
る方法として、図4のようなコア半体のトラック幅を予
め異なる様に形成し、突合せた構造の磁気ヘッドにおい
ても上述と同様に良好な記録特性を示した。
As a method of causing the metal magnetic film to protrude from the track width end, the track width of the core half is formed to be different in advance as shown in FIG. The characteristics were shown.

【0031】[0031]

【発明の効果】以上のように、本発明の磁気ヘッドはコ
ア半体の突合せ部に金属磁性膜を形成し、磁気ギャップ
を挟んで金属磁性膜同士を相対してなる磁気ヘッドにお
いて該金属磁性膜が磁気ヘッドトラック幅より外側はみ
出し、その量が大きくなるに従って、磁気ヘッドの磁界
強度を強く急峻な磁界分布にし、記録特性に優れる。
As described above, in the magnetic head of the present invention, the metal magnetic film is formed at the butting portion of the core halves and the metal magnetic films are opposed to each other with the magnetic gap therebetween. As the amount of the film protrudes outside the track width of the magnetic head and the amount thereof increases, the magnetic field strength of the magnetic head becomes a strong and steep magnetic field distribution, and the recording characteristics are excellent.

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

【図1】本発明実施例1に係る複合型磁気ヘッドの概観
FIG. 1 is a schematic view of a composite magnetic head according to a first embodiment of the present invention.

【図2】本発明実施例1磁気ヘッドのギャップ近傍の拡
大図
FIG. 2 is an enlarged view of the vicinity of a gap of the magnetic head according to the first embodiment of the present invention;

【図3】本発明の実施例2磁気ヘッドのギャップ近傍の
拡大図(a)
FIG. 3 is an enlarged view of the vicinity of a gap of a magnetic head according to a second embodiment of the present invention;

【図4】本発明の実施例2磁気ヘッドのギャップ近傍の
拡大図(b)
FIG. 4 is an enlarged view (b) of the vicinity of the gap of the magnetic head according to the second embodiment of the present invention;

【図5】従来磁気ヘッドの概観図FIG. 5 is a schematic view of a conventional magnetic head.

【図6】従来磁気ヘッドのテ−プ摺動面拡大図FIG. 6 is an enlarged view of a tape sliding surface of a conventional magnetic head.

【符号の説明】[Explanation of symbols]

1、11…フェライトコア、2、12…金属磁性膜、ア
モルファス合金など、3…磁気ヘッドギャップ、4、1
4…ガラス、5…トラック幅、6、16…非磁性材、セ
ラミックなど、7…金属磁性膜のはみ出し量
1, 11: ferrite core, 2, 12: metal magnetic film, amorphous alloy, etc., 3: magnetic head gap, 4, 1
4: glass, 5: track width, 6, 16: non-magnetic material, ceramic, etc., 7: protrusion amount of metal magnetic film

フロントページの続き (72)発明者 有川 康之 茨城県ひたちなか市稲田1410番地株式会社 日立製作所映像情報メディア事業部内Continued on the front page (72) Inventor Yasuyuki Arikawa 1410 Inada, Hitachinaka-shi, Ibaraki Pref. Hitachi, Ltd. Visual Information Media Division

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】コア半体の突合せ部に金属磁性膜を形成
し、磁気ギャップを挟んで該金属磁性膜同士を相対して
なる磁気ヘッドにおいて、少なくともトラック幅片端の
該金属磁性膜がトラック幅外側にはみ出していることを
特徴とした磁気ヘッド。
1. A magnetic head comprising a metal magnetic film formed at abutting portions of core halves and opposed to each other with a magnetic gap therebetween, wherein at least one end of the track width has a track width. A magnetic head that protrudes outward.
【請求項2】コア半体の突合せ部に金属磁性膜を形成
し、磁気ギャップを挟んで該金属磁性膜同士を相対して
なる磁気ヘッドにおいて、トラック幅外側にはみ出して
いる該金属磁性膜の体積がギャップから離れるに従って
円弧状に大きくなることを特徴とした磁気ヘッド。
2. A magnetic head comprising: a metal magnetic film formed at an abutting portion of a half of a core; and the metal magnetic films facing each other with a magnetic gap interposed therebetween. A magnetic head characterized in that the volume increases in an arc shape as the volume increases away from the gap.
【請求項3】ガ−ドバンドレスアジマス記録方式の磁気
ヘッドにおいて、重ね書きするトラック部分が該磁気ヘ
ッドの該金属磁性膜がトラック幅外側にはみ出している
側にすることを特徴とする磁気ヘッド。
3. A magnetic head according to claim 2, wherein a track portion to be overwritten is on a side where the metal magnetic film of the magnetic head protrudes outside the track width.
【請求項4】記録用磁気ヘッドとして使用することを特
徴とした、請求項1、請求項2、請求項3に記載の磁気
ヘッド。
4. The magnetic head according to claim 1, wherein the magnetic head is used as a recording magnetic head.
JP24012196A 1996-09-11 1996-09-11 Magnetic head Pending JPH1083513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24012196A JPH1083513A (en) 1996-09-11 1996-09-11 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24012196A JPH1083513A (en) 1996-09-11 1996-09-11 Magnetic head

Publications (1)

Publication Number Publication Date
JPH1083513A true JPH1083513A (en) 1998-03-31

Family

ID=17054814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24012196A Pending JPH1083513A (en) 1996-09-11 1996-09-11 Magnetic head

Country Status (1)

Country Link
JP (1) JPH1083513A (en)

Similar Documents

Publication Publication Date Title
KR0160663B1 (en) Magnetic head for magnetic recording and reproducing
JPH10320720A (en) Magnetic head for perpendicular recording
US4805058A (en) Magnetic erasing head
JPH1083513A (en) Magnetic head
JP2513746B2 (en) Perpendicular magnetic recording media
JPH034964Y2 (en)
JPH0629769Y2 (en) Magnetic head
JP3203943B2 (en) Magnetic recording / reproducing device
JP2553494B2 (en) Magnetic head
JPH08329414A (en) Magnetic head
JPH0690776B2 (en) Magnetic head
JP2596996Y2 (en) Magnetic head
JP3022206B2 (en) Magnetic head
KR100193623B1 (en) Magnetic head and its manufacturing method
JPH11203620A (en) Magnetic head
JPS6240606A (en) Magnetic erasing head
JPS6220606B2 (en)
JPS59142719A (en) Thin-film head
JPH0644522A (en) Magnetic head
JPH0760488B2 (en) Magnetic head
JP2001344706A (en) Magnetic head, its manufacturing method and magnetic recording/reproducing device
JP2003059007A (en) Magnetic head and magnetic recording/reproducing device
JPS62165714A (en) Magnetic head
JPH0448402A (en) Magnetic recording method
JPH04114303A (en) Erase head