JPS647467Y2 - - Google Patents
Info
- Publication number
- JPS647467Y2 JPS647467Y2 JP1982065582U JP6558282U JPS647467Y2 JP S647467 Y2 JPS647467 Y2 JP S647467Y2 JP 1982065582 U JP1982065582 U JP 1982065582U JP 6558282 U JP6558282 U JP 6558282U JP S647467 Y2 JPS647467 Y2 JP S647467Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- magnetic
- slider
- magnetic disk
- head
- 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.)
- Expired
Links
- 239000000696 magnetic material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Description
【考案の詳細な説明】
本考案は浮動型磁気ヘツド、特に磁気デイスク
装置（ここに磁気デイスクとは剛性を有するいわ
ゆるハードデイスクをいう）に用いて好適な浮動
型磁気ヘツドに関する。従来、磁気ヘツドは第１
図に示すようなテーパ部とフラツト部からなるス
ライダ２の後部に磁気ヘツドコア１を有する構造
をしている（例えば、特開昭56−153558号公報参
照）。記録再生動作中には、図に示す如く、動圧
軸受の原理に従つて、サブミクロンオーダーのス
ペーシングを保つて磁気デイスク１１上に浮動す
る。また、同原理によつて、スライダ後端にある
磁気ヘツドコア部においてそのスペーシングは最
小になる様に設計されている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a floating magnetic head, and particularly to a floating magnetic head suitable for use in a magnetic disk device (herein, a magnetic disk refers to a rigid so-called hard disk). Traditionally, the magnetic head
It has a structure in which a magnetic head core 1 is provided at the rear of a slider 2 consisting of a tapered part and a flat part as shown in the figure (see, for example, Japanese Patent Laid-Open No. 153558/1983). During recording and reproducing operations, as shown in the figure, the magnetic disk 11 floats above the magnetic disk 11 while maintaining a spacing on the order of submicrons according to the principle of dynamic pressure bearing. Further, based on the same principle, the magnetic head core portion at the rear end of the slider is designed so that the spacing thereof is minimized.
一方、動作停止時、すなわち、磁気デイスクが
回転せず、停止しているときには、該磁気ヘツド
と磁気デイスクは接触しており、動作始動ととも
に上記原理によつて磁気ヘツドは浮動開始する。
この動作はコンタクトスタート／ストツプと呼ば
れる。 On the other hand, when the operation is stopped, that is, when the magnetic disk is not rotating and is stopped, the magnetic head and the magnetic disk are in contact with each other, and when the operation starts, the magnetic head starts floating according to the above principle.
This operation is called contact start/stop.
しかし、記録密度が高くなるに従つて、磁気デ
イスク表面は平滑になり、そのために磁気ヘツド
と磁気デイスクがリンギング現象により密着し、
磁気デイスクが回転を開始しても、浮動しにくく
なるばかりか、時には磁気ヘツドの破損の原因と
もなりうる。 However, as the recording density increases, the surface of the magnetic disk becomes smoother, which causes the magnetic head and disk to come into closer contact due to the ringing phenomenon.
Even if the magnetic disk starts to rotate, it not only becomes difficult to float, but also may cause damage to the magnetic head.
本考案はこの密着の問題を解消し、かつ、磁気
ヘツドコア部で最小となる狭スペーシングを実現
するための磁気ヘツドを提供することを目的とす
る。本考案の磁気ヘツドは所定の円筒面を有する
スライダの後端に磁気ヘツドコア、例えば薄膜ヘ
ツドを有することを特徴とする。以下、実施例に
て本考案を詳細に説明する。 It is an object of the present invention to provide a magnetic head that solves this problem of close contact and realizes a minimum narrow spacing in the magnetic head core. The magnetic head of the present invention is characterized in that it has a magnetic head core, such as a thin film head, at the rear end of a slider having a predetermined cylindrical surface. Hereinafter, the present invention will be explained in detail with reference to Examples.
第２図に本考案の１つの実施例を示す。スライ
ダ２はMoNoフエライトなどの磁性材、もしくは
フオトセラム、アルミナなどの非磁性体からな
り、図に示すごとく、磁気デイスク１１の回転方
向１２に円筒面曲率半径Ｒのクラウニングを有す
る。該磁気デイスク１１から見てスライダ２の後
端にヘツドコア１を作製する。磁気ヘツドコア１
は薄膜ヘツドでも良く、第１図に示した如きバル
ク材のコアでも良い。 FIG. 2 shows one embodiment of the present invention. The slider 2 is made of a magnetic material such as M o No ferrite or a non-magnetic material such as photoceram or alumina, and has a crowning of a cylindrical surface with a radius of curvature R in the rotational direction 12 of the magnetic disk 11 as shown in the figure. A head core 1 is fabricated at the rear end of the slider 2 when viewed from the magnetic disk 11. Magnetic head core 1
The head may be a thin film head or may be a core of bulk material as shown in FIG.
第３図は磁気デイスク１１上で動作中の磁気ヘ
ツドの浮動状態を示す。磁気デイスク回転方向の
スライダ２の長さを３mmとし、Ｒ＝560mmのとき、
クラウニング高さは2μmとなる。このような磁気
ヘツドを作り、回転磁気デイスク上でスペーシン
グを測定したところ、第３図に示すように、磁気
ヘツドコア１部でスペーシングが最小になり、か
つ、所定のサブミクロン狭スペーシングが得られ
ることを確認した。Ｒとスペーシングの関係は、
磁気ヘツドを磁気デイスク１１に押しつけるため
のバネ３の強さおよび磁気デイスク１１の速度に
よつて異なる。 FIG. 3 shows the floating state of the magnetic head while it is operating on the magnetic disk 11. As shown in FIG. When the length of slider 2 in the magnetic disk rotation direction is 3 mm and R = 560 mm,
The crowning height is 2 μm. When such a magnetic head was made and the spacing was measured on a rotating magnetic disk, as shown in Figure 3, the spacing was minimum in one part of the magnetic head core, and the predetermined submicron narrow spacing was found. I confirmed that I can get it. The relationship between R and spacing is
It depends on the strength of the spring 3 for pressing the magnetic head against the magnetic disk 11 and the speed of the magnetic disk 11.
上記磁気ヘツドにより、前記コンタクトスター
ト／ストツプ試験を行つたところ、鏡面に研摩さ
れた磁気デイスクにおいても、前記リンギング現
象は見られず、磁気デイスクと磁気ヘツドは密着
することなく、磁気デイスク動作始動とともに正
しく浮動動作した。 When the contact start/stop test was conducted using the magnetic head, the ringing phenomenon was not observed even on the mirror-polished magnetic disk, and the magnetic disk and magnetic head did not come into close contact with each other, and as soon as the magnetic disk started operating. Floating worked correctly.
本実施例に示した如く、所定の曲率半径をも
ち、その後端に磁気ヘツドコアを有する磁気ヘツ
ドを用いることにより、正しいコンタクトスター
ト／ストツプ動作と磁気ヘツドコア部で最小とな
り、かつ所定の狭スペーシングを得ることのでき
る理想的な浮動状態を実現できた。 As shown in this embodiment, by using a magnetic head with a predetermined radius of curvature and a magnetic head core at its rear end, correct contact start/stop operation and the minimum and predetermined narrow spacing at the magnetic head core can be achieved. I was able to achieve the ideal floating state possible.
第１図は従来の浮動型磁気ヘツドを示す図、第
２図及び第３図は本考案の一実施例を示す図であ
る。
１……磁気ヘツドコア、２……スライダ、１１
……磁気デイスク。
FIG. 1 shows a conventional floating magnetic head, and FIGS. 2 and 3 show an embodiment of the present invention. 1...Magnetic head core, 2...Slider, 11
...magnetic disk.
Claims (1)
あつて、該ヘツドは所定の円筒を有し、その円周
方向に貫通する溝を有するスライダと、該スライ
ダの後端に設けられた磁気ヘツドコアからなり、
上記スライダの円筒面と上記磁気記録媒体とのス
ペーシングが上記スライダの後端のヘツドコア部
で最小となることを特徴とする浮動型磁気ヘツ
ド。 A floating magnetic head that floats above a magnetic disk, the head comprising a slider having a predetermined cylinder and a groove passing through the cylinder in the circumferential direction, and a magnetic head core provided at the rear end of the slider. ,
A floating magnetic head characterized in that the spacing between the cylindrical surface of the slider and the magnetic recording medium is minimized at a head core portion at the rear end of the slider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6558282U JPS58170059U (en) | 1982-05-07 | 1982-05-07 | floating magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6558282U JPS58170059U (en) | 1982-05-07 | 1982-05-07 | floating magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58170059U JPS58170059U (en) | 1983-11-12 |
| JPS647467Y2 true JPS647467Y2 (en) | 1989-02-28 |
Family
ID=30075530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6558282U Granted JPS58170059U (en) | 1982-05-07 | 1982-05-07 | floating magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58170059U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4285019A (en) * | 1980-03-10 | 1981-08-18 | Memorex Corporation | Contoured magnetic recording head/slider assembly |
| JPS56105359A (en) * | 1980-01-25 | 1981-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Floating head |
| JPS56153558A (en) * | 1980-12-17 | 1981-11-27 | Nippon Telegr & Teleph Corp <Ntt> | Floating head slider |
| JPS5835765A (en) * | 1981-08-17 | 1983-03-02 | インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン | Slider for magnetic head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55122267U (en) * | 1979-02-20 | 1980-08-30 |
-
1982
- 1982-05-07 JP JP6558282U patent/JPS58170059U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56105359A (en) * | 1980-01-25 | 1981-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Floating head |
| US4285019A (en) * | 1980-03-10 | 1981-08-18 | Memorex Corporation | Contoured magnetic recording head/slider assembly |
| JPS56153558A (en) * | 1980-12-17 | 1981-11-27 | Nippon Telegr & Teleph Corp <Ntt> | Floating head slider |
| JPS5835765A (en) * | 1981-08-17 | 1983-03-02 | インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン | Slider for magnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58170059U (en) | 1983-11-12 |
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