JPS61283021A - Floating magnetic head - Google Patents
Floating magnetic headInfo
- Publication number
- JPS61283021A JPS61283021A JP12446185A JP12446185A JPS61283021A JP S61283021 A JPS61283021 A JP S61283021A JP 12446185 A JP12446185 A JP 12446185A JP 12446185 A JP12446185 A JP 12446185A JP S61283021 A JPS61283021 A JP S61283021A
- Authority
- JP
- Japan
- Prior art keywords
- gap
- film
- glass
- magnetic head
- slider
- 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
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、磁気ディスク装置や磁気ドラム装置等の磁気
記録媒体の記録面から磁気ヘッドを浮上させた状態で、
磁気記録媒体への情報の読み書きを行う浮動形の磁気ヘ
ッドに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a magnetic disk device, a magnetic drum device, etc., in which a magnetic head is suspended above a recording surface of a magnetic recording medium such as a magnetic disk device or a magnetic drum device.
The present invention relates to a floating magnetic head that reads and writes information to and from a magnetic recording medium.
従来の技術
従来の浮動形磁気ヘッドの構造を第１図、第２図に示す
。第１図（Ａ）は磁気ヘッドの斜視図、第２図（Ｂ）は
同磁気ヘッドの正面図、第１図（Ｃ）は同磁気ヘッドを
ギャップに沿って切断した図である。この磁気ヘッドは
、モノシリツク（ｍｏｎｏ １ｉｔｈｉｃ）形磁気ヘ
ッドと呼ばれているもので、浮上を司るスライダー２と
コア１とが同じフェライトでできており、コア１はフロ
ントギャップ４．バックギャップ５及び接着ガラス３で
スライダー２に固着されている。フロントギャップ４が
磁気ディスクの磁気記録体に対向し、情報の読み書きを
行う。第２図はコア１とスライダー２の接着部をさらに
詳細に示すもので第２図（Ａ）のものでは、フロントギ
ャップ４゜バックギャップ５はともに、フェライト上に
焼き付け、膜厚を研摩紙で調整したギャップガラス６で
構成されている。第２［ｆｆ１（Ｂ）のものでは、フロ
ントギャップ４．バックギャップ５はともに浸透したガ
ラス８，７で構成されており、溶融接着状態であるため
に、接着強度は高い。2. Description of the Related Art The structure of a conventional floating magnetic head is shown in FIGS. 1 and 2. FIG. 1(A) is a perspective view of the magnetic head, FIG. 2(B) is a front view of the magnetic head, and FIG. 1(C) is a view of the magnetic head cut along a gap. This magnetic head is called a monolithic magnetic head, in which the slider 2 that controls flying and the core 1 are made of the same ferrite, and the core 1 has a front gap 4. It is fixed to the slider 2 with a back gap 5 and adhesive glass 3. A front gap 4 faces the magnetic recording body of the magnetic disk and reads and writes information. Figure 2 shows the bonded part between the core 1 and the slider 2 in more detail. In Figure 2 (A), both the front gap 4° and the back gap 5 are baked on ferrite and the film thickness is reduced with abrasive paper. It is composed of adjusted gap glass 6. In the second [ff1(B), front gap 4. The back gap 5 is made up of glass 8 and 7 that are both penetrated, and since they are in a molten bonded state, the bonding strength is high.
発明が解決しようとする問題点
しかし、第２図（Ａ）の構成のものでは磁気ギャップ長
を維持するために、工程上ギャップガラス６は低融点ガ
ラスにして溶融接着ができないので、コア１とスライダ
ー２の接着強度が低くなってしまう。また、第２図（Ｂ
）の構成のものではフェライ゛ト中ヘガラス成分が、ま
たフェライト成分がガラス中へ著しく拡散浸透した構造
となっているため、実効ギャップ長が光学的ギャップ長
より著しく広がり、さらにギャップガラスの透磁率の上
昇から出力が低い。また、結局第２図（Ａ）（Ｂ）の構
造のものはともに磁気ギャップ長精度を高（、狭ギャッ
プの構造とすることが困難であった。Problems to be Solved by the Invention However, in order to maintain the magnetic gap length in the configuration shown in FIG. The adhesive strength of the slider 2 becomes low. Also, Figure 2 (B
) has a structure in which the glass component is significantly diffused into the ferrite, and the ferrite component is significantly diffused into the glass, so the effective gap length is significantly wider than the optical gap length, and the magnetic permeability of the gap glass is Output is low due to rise in . Furthermore, in the structures shown in FIGS. 2(A) and 2(B), it was difficult to obtain a structure with high magnetic gap length accuracy (and a narrow gap).
本発明は、浮動形磁気ヘッドにおけるこのような問題を
解決することを目的とする。The present invention aims to solve these problems in floating magnetic heads.
問題点を解決するための手段
この目的を達するのに本発明は、バックギャップは浸透
したガラスで、フロントギャップはスパッタ膜で構成す
るものである。Means for Solving the Problems To achieve this objective, the present invention consists of a back gap of impregnated glass and a front gap of sputtered film.
作 用
本発明により、精度が高く狭ギャップ化に対応でき、さ
らに堅牢な浮動形磁気ヘッドとするものである。According to the present invention, it is possible to provide a floating magnetic head which has high precision, can cope with narrowing of the gap, and is more robust.
実施例
第３図は、本発明の一実施例における浮動形磁気ヘッド
の構造を示すものである。１はコア、２はスライダーで
あり、９は、石英ガラス、はう珪酸ガラス、鉛ガラス等
のスパッタ膜、７は、浸透したバックギャップガラスで
ある。接着ガラス３及びバックギャップガラス７の軟化
点は、スパッタ膜９のそれよりも低い材料を選択し、ギ
ャップ形成温度は、スパッタ膜９の屈伏温度以下とする
。接着ガラス３及びバックギャップガラス７はギャップ
形成温度でフェライトと反応しない組織の、かつフェラ
イトとぬれ性のよいガラスを選択し、粘度は１０〜１０
ボイズの低粘度のものとする。このようにすればフロン
トギャップにおいてスパッタ膜９とコア１及びスライダ
ー２の間の相互拡散浸透層がほとんどな（、そのため出
力低下のない、光学的ギャップ長と実効ギャップ長が等
しいフロントギャップが得られる。さらにスパッタ膜９
は膜厚の制御が容易で、ギャップ形成温度は屈伏点以下
なので形成時に膜厚の変動がなく高精度のギャップ長を
持つ磁気ヘッドとなる。またバックギャップガラス７は
溶融浸透で形成しているため、コア１とスライダー２の
接着強度が大きいものとなる。コア１とスライダー２の
接着強度は、第１図（Ｃ）に示すようにフロントギャッ
プ４の面積が小さいため、接着ガラス３及びバックギャ
ップ５のみに左右される。本発明で、フロントギャップ
はスパッタ膜９で非溶融接着しているが、前記の理由で
接着強度が低下することはない。Embodiment FIG. 3 shows the structure of a floating magnetic head in an embodiment of the present invention. 1 is a core, 2 is a slider, 9 is a sputtered film of quartz glass, borosilicate glass, lead glass, etc., and 7 is a back gap glass penetrated. The adhesive glass 3 and the back gap glass 7 are selected from materials having a softening point lower than that of the sputtered film 9, and the gap forming temperature is set to be lower than the yielding temperature of the sputtered film 9. For the adhesive glass 3 and the back gap glass 7, glass with a structure that does not react with ferrite at the gap formation temperature and has good wettability with ferrite is selected, and the viscosity is 10 to 10.
It should have low viscosity and low viscosity. In this way, there is almost no mutual diffusion permeation layer between the sputtered film 9, the core 1, and the slider 2 in the front gap (therefore, a front gap in which the optical gap length and the effective gap length are equal to each other without reducing the output can be obtained). Furthermore, sputtered film 9
Since the film thickness can be easily controlled, and the gap formation temperature is below the yield point, the film thickness does not vary during formation, resulting in a magnetic head with a highly accurate gap length. Furthermore, since the back gap glass 7 is formed by melting and penetrating, the adhesive strength between the core 1 and the slider 2 is high. The adhesive strength between the core 1 and the slider 2 depends only on the adhesive glass 3 and the back gap 5 because the area of the front gap 4 is small as shown in FIG. 1(C). In the present invention, the front gap is bonded by the sputtered film 9 without melting, but the bonding strength does not decrease for the above-mentioned reason.
発明の効果
本発明によれば、狭ギャップ、高精度ギャップで、機能
的に堅牢な浮動形磁気ヘッドを提供するものである。Effects of the Invention According to the present invention, a functionally robust floating magnetic head with a narrow gap and high precision gap is provided.
第１図は、浮動形磁気ヘッドを示すもので、（Ａ）は斜
視図、（Ｂ）は正面図、（Ｃ）は同磁気ヘッドをギャッ
プに沿って切断した図である。
第２図は従来の浮動形磁気ヘッドの構造を詳細に示す正
面図である。第３図は本発明の一実施例における浮動形
磁気ヘッドの正面図である。
１１．コア ２１．スライダー３１．接着ガ
ラス ４０．フロントギャップ５８．バックギャッ
プ
６０．焼き付けたガラス膜
７８．浸透したバックギャップガラス
８０．浸透したフロントギャップガラス９８．スパッタ
膜FIG. 1 shows a floating magnetic head, in which (A) is a perspective view, (B) is a front view, and (C) is a view of the magnetic head cut along a gap. FIG. 2 is a front view showing the structure of a conventional floating magnetic head in detail. FIG. 3 is a front view of a floating magnetic head in one embodiment of the present invention. 11. Core 21. Slider 31. Adhesive glass 40. Front gap 58. Back gap 60. Baked glass film 78. Penetrated back gap glass 80. Penetrated front gap glass 98. sputtered film
Claims (1)
して兼用する浮動形磁気ヘッドにおいて、フロントギャ
ップはスパッタ膜で、バックギャップは浸透したガラス
で構成されていることを特徴とする浮動形磁気ヘッド。A floating magnetic head in which a part of the magnetic circuit of a magnetic head core is also used as a floating slider, characterized in that a front gap is made of a sputtered film and a back gap is made of permeated glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12446185A JPS61283021A (en) | 1985-06-07 | 1985-06-07 | Floating magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12446185A JPS61283021A (en) | 1985-06-07 | 1985-06-07 | Floating magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61283021A true JPS61283021A (en) | 1986-12-13 |
Family
ID=14886094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12446185A Pending JPS61283021A (en) | 1985-06-07 | 1985-06-07 | Floating magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61283021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157567A (en) * | 1990-12-05 | 1992-10-20 | Seagate Technology, Inc. | Composite disk drive head assembly having an improved core-to-slider bond |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54159211A (en) * | 1978-06-07 | 1979-12-15 | Mitsubishi Electric Corp | Floating head |
| JPS59107412A (en) * | 1982-12-11 | 1984-06-21 | Victor Co Of Japan Ltd | Magnetic head |
-
1985
- 1985-06-07 JP JP12446185A patent/JPS61283021A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54159211A (en) * | 1978-06-07 | 1979-12-15 | Mitsubishi Electric Corp | Floating head |
| JPS59107412A (en) * | 1982-12-11 | 1984-06-21 | Victor Co Of Japan Ltd | Magnetic head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157567A (en) * | 1990-12-05 | 1992-10-20 | Seagate Technology, Inc. | Composite disk drive head assembly having an improved core-to-slider bond |
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