JPH01211309A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH01211309A JPH01211309A JP3817588A JP3817588A JPH01211309A JP H01211309 A JPH01211309 A JP H01211309A JP 3817588 A JP3817588 A JP 3817588A JP 3817588 A JP3817588 A JP 3817588A JP H01211309 A JPH01211309 A JP H01211309A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- sliding surface
- thin films
- track width
- tape sliding
- 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
- 239000000696 magnetic material Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 239000010409 thin film Substances 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910020630 Co Ni Inorganic materials 0.000 description 1
- 229910002440 Co–Ni Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
- G11B5/3106—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
-
- 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
- G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
-
- 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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/21—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being of ferrous sheet metal or other magnetic layers
-
- 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
- G11B5/313—Disposition of layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は高密度磁気記録装置において信号を記録し高出
力の再生信号を得る高性能磁気ヘッドに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-performance magnetic head that records signals and obtains high-output reproduction signals in a high-density magnetic recording device.
従来の技術
メタル系の高抗磁力磁気媒体として、メタル塗布媒体あ
るいはＣｏ−Ｎｉ系蒸着体が高密度特性が有望とされて
いるが高抗磁力であるため、従来のフェライトヘッドで
はヘッドの磁気的飽和という問題があり、これに代わる
磁気ヘッドが必要となってくる。高密度磁気記録再生の
できる磁気ヘッドを第３図に示す。同図において、アモ
ルファス薄膜などの磁性体ｌとＳｉＯ□薄膜あるいはＴ
ｉＭｇ薄膜などの非磁性体２をガラスあるいはセラミッ
クなどの基板４上に積層し、基板４と同じ材質の保護ｖ
ｉ、５で積層面をはさむように接着しており、これをヘ
ッドチップとする。Conventional technology As metal-based high coercive force magnetic media, metal-coated media or Co-Ni vapor deposited materials are said to have promising high-density properties, but because of their high coercive force, conventional ferrite heads have a high magnetic coercive force. There is a problem of saturation, and an alternative magnetic head is needed. FIG. 3 shows a magnetic head capable of high-density magnetic recording and reproduction. In the figure, a magnetic material l such as an amorphous thin film and a SiO□ thin film or T
A non-magnetic material 2 such as an iMg thin film is laminated on a substrate 4 such as glass or ceramic, and a protective v
The parts i and 5 are bonded to sandwich the laminated surfaces, and this is used as a head chip.
発明が解決しようとする課題
上記の例のような磁気ヘッドでは、テープ摺動面のトラ
ック幅に対して積層された非磁性体のトータル幅は有限
であるのでトラック幅に対する磁性体の有効なトラック
幅は減少しその結果、記録再生出力が低下するという欠
点がある。また積層構造によりトラックが細分されるた
め積層部のエツジ付近の乱れたフリンジ磁界により記録
信号が歪むいう問題点がある。また従来の積層構造ヘッ
ドではコアー幅がトラック幅と等し〈従来のバルク・タ
イプのヘッドのコアー幅より小さいためコアー部の磁気
抵抗が大きくなり再生効率が低下するという大きな欠点
がある。Problems to be Solved by the Invention In a magnetic head like the above example, the total width of the laminated non-magnetic material is finite relative to the track width of the tape sliding surface, so the effective track of the magnetic material relative to the track width is limited. There is a drawback that the width is reduced and as a result, the recording/reproducing output is reduced. Furthermore, since the track is subdivided by the laminated structure, there is a problem in that the recorded signal is distorted by the disturbed fringe magnetic field near the edge of the laminated portion. Furthermore, in the conventional laminated structure head, the core width is equal to the track width (which is smaller than the core width of the conventional bulk type head), so there is a major drawback in that the magnetic resistance of the core portion increases and the reproduction efficiency decreases.
本発明では、前記したような欠点を解消し記録再生出力
の高い優れた磁気ヘッドを提供することである。An object of the present invention is to provide an excellent magnetic head that eliminates the above-mentioned drawbacks and has a high recording and reproducing output.
課題を解決するための手段
本発明の磁気ヘッドは、磁気ヘッドのテープ摺動面は磁
性体と非磁性体の積層構造とはせず磁性体だけとするこ
とで、磁気ヘッドのテープ摺動面の実効トラック幅を最
大限活用し、且つ、磁性体と非磁性体の積層で構成され
るコアー部の幅をテープ摺動面の実効トラック幅より広
く形成することで大きな再生効率を持ち優れた記録再生
出力が得られる。Means for Solving the Problems In the magnetic head of the present invention, the tape sliding surface of the magnetic head does not have a laminated structure of a magnetic material and a non-magnetic material, but is made of only a magnetic material. By making maximum use of the effective track width of the tape, and by making the width of the core section, which is made up of laminated layers of magnetic and non-magnetic materials, wider than the effective track width of the tape sliding surface, it has high playback efficiency and excellent performance. Recording and playback output can be obtained.
作用
上述した構造の磁気ヘッドを用いることにより磁気ヘッ
ドのテープ摺動面のギャップ部の実効トラック幅を最大
限活用することができ、また磁性体と非磁性体の積層で
構成されるコアー部の幅をトラック幅より広く形成する
ことでコアー部の磁気抵抗を減少させることができるの
で、記録再生出力信号の小さくなる短波長の信号であっ
ても優れた記録再生出力が得られる。Function: By using the magnetic head with the structure described above, the effective track width of the gap portion of the tape sliding surface of the magnetic head can be utilized to the maximum, and the core portion, which is composed of laminated layers of magnetic and non-magnetic materials, can be utilized to the maximum extent. By forming the width to be wider than the track width, the magnetic resistance of the core portion can be reduced, so that excellent recording and reproducing output can be obtained even for short-wavelength signals where the recording and reproducing output signal is small.
実施例
以下、本発明の一実施例の磁気ヘッドについて図面を参
照しながら説明する。第１図は本発明の磁気ヘッドの構
成を示す斜視図であり、第２図は第１図のギャップ面の
側面図である。第１図においてアモルファス薄膜を磁性
体ｌとし、Ｓｉ○２薄膜を非磁性体２としてこれを順次
積層し、テープ摺動面には積層部分の磁性材と同じ材質
の磁性材１を接着する。ギャップ部においてトラック幅
を決めるため積層部分の非磁性材と同し材質の非磁性材
２を形成する。第２図は第１図のギャップ部の３の側面
図である。同図に示すようにテープ摺動面は磁性体１だ
けで形成し非磁性材２によりトラック幅を決定し、磁性
材１と非磁性材２の積層の幅はテープ摺動面のギャップ
部より広く形成されている。本発明においては、テープ
の摺動面にはセンダスト薄膜などの高い飽和磁束密度を
持った材料を使用しても同じ効果が得られるし、接着法
だけでなくスパッター法などあらゆる方法でテープ摺動
面を覆うことができる。また、本発明においてはギャッ
プのアジマス角を変化させても同様の効果が得られる。Embodiment A magnetic head according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the structure of the magnetic head of the present invention, and FIG. 2 is a side view of the gap surface of FIG. 1. In FIG. 1, an amorphous thin film is used as a magnetic material 1, a Si○2 thin film is used as a non-magnetic material 2, and these are sequentially laminated, and a magnetic material 1 made of the same material as the magnetic material of the laminated portion is adhered to the tape sliding surface. In order to determine the track width in the gap portion, a non-magnetic material 2 made of the same material as the non-magnetic material of the laminated portion is formed. FIG. 2 is a side view of the gap portion 3 in FIG. 1. As shown in the figure, the tape sliding surface is formed only from the magnetic material 1, and the track width is determined by the non-magnetic material 2. It is widely formed. In the present invention, the same effect can be obtained even if a material with a high saturation magnetic flux density such as Sendust thin film is used for the sliding surface of the tape. Can cover the surface. Further, in the present invention, the same effect can be obtained even if the azimuth angle of the gap is changed.
発明の効果
本発明によれば、テープ摺動面の表層部分は磁性体だけ
で形成しギャップ部でのトラック幅を非磁性材で決定し
、ギャップ部のトラック幅に対し磁性材と非磁性材の積
層で形成されたコアー部の幅を広く形成したことにより
コアー部での磁気抵抗が減少し再生効率が良くなり、再
生出力の低下が生じないので高密度磁気記録再生に非常
に有効である。またコアー部が積層構造を持つので従来
のバルク・タイプのヘッドなどに比べてうず電流損失が
小さく、その結果ヘッド・インピーダンスの実数部であ
る実効抵抗が小さくなり、ヘッドアンプ系の低雑音化が
計れる。Effects of the Invention According to the present invention, the surface layer portion of the tape sliding surface is formed only of magnetic material, the track width at the gap portion is determined by the non-magnetic material, and the magnetic material and the non-magnetic material are used for the track width at the gap portion. By widening the width of the core formed by laminating the core, the magnetic resistance in the core is reduced, improving reproduction efficiency, and there is no drop in reproduction output, making it extremely effective for high-density magnetic recording and reproduction. . Additionally, since the core has a laminated structure, eddy current loss is lower than that of conventional bulk-type heads, and as a result, the effective resistance, which is the real part of the head impedance, is reduced, resulting in lower noise in the head amplifier system. It can be measured.
第１図は本発明の磁気ヘッドの構成を示す斜視図、第２
図は第１図のギャップ部の側面図、第３図は従来の磁気
ヘッドの構成を示す斜視図である。
１・・・・・・磁性体、２・・・・・・非磁性体、３・
・・・・・ギャップ部、４・・・・・・基板、５・・・
・・・保護板。
代理人の氏名 弁理士 中尾敏男 はか１名第１図
第３図FIG. 1 is a perspective view showing the structure of the magnetic head of the present invention, and FIG.
This figure is a side view of the gap portion shown in FIG. 1, and FIG. 3 is a perspective view showing the structure of a conventional magnetic head. 1... Magnetic material, 2... Non-magnetic material, 3.
... Gap part, 4 ... Substrate, 5 ...
...Protection board. Name of agent: Patent attorney Toshio Nakao (1 person) Figure 1 Figure 3
Claims (2)
り広く積層して形成し、かつテープ摺動面の表層部分は
磁性体だけで形成し、テープ摺動面のギャップ部のトラ
ック幅は非磁性体により前記コアー部より狭くされるこ
とを特徴とする磁気ヘッド。(1) The core part is formed by laminating a magnetic material and a non-magnetic material wider than the effective track width, and the surface layer part of the tape sliding surface is formed only of magnetic material, and the track width of the gap part of the tape sliding surface is formed. is made narrower than the core portion by a non-magnetic material.
の表層部分の磁性体は同一材質であることを特徴とする
請求項第（１）項記載の磁気ヘッド。(2) The magnetic head according to claim (1), wherein the magnetic material laminated as the core portion and the magnetic material in the surface layer portion of the tape sliding surface are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3817588A JPH01211309A (en) | 1988-02-19 | 1988-02-19 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3817588A JPH01211309A (en) | 1988-02-19 | 1988-02-19 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01211309A true JPH01211309A (en) | 1989-08-24 |
Family
ID=12518049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3817588A Pending JPH01211309A (en) | 1988-02-19 | 1988-02-19 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01211309A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276959A (en) * | 1991-04-16 | 1994-01-11 | Sharp Kabushiki Kaisha | Method of manufacturing a magnetic tape head |
| US8547665B2 (en) * | 2008-01-03 | 2013-10-01 | International Business Machines Corporation | Magnetic head having a material formed in one or more recesses extending into the media support surface of at least one of the substrate and the closure |
-
1988
- 1988-02-19 JP JP3817588A patent/JPH01211309A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276959A (en) * | 1991-04-16 | 1994-01-11 | Sharp Kabushiki Kaisha | Method of manufacturing a magnetic tape head |
| US8547665B2 (en) * | 2008-01-03 | 2013-10-01 | International Business Machines Corporation | Magnetic head having a material formed in one or more recesses extending into the media support surface of at least one of the substrate and the closure |
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