JPH0359511B2 - - Google Patents
Info
- Publication number
- JPH0359511B2 JPH0359511B2 JP234785A JP234785A JPH0359511B2 JP H0359511 B2 JPH0359511 B2 JP H0359511B2 JP 234785 A JP234785 A JP 234785A JP 234785 A JP234785 A JP 234785A JP H0359511 B2 JPH0359511 B2 JP H0359511B2
- Authority
- JP
- Japan
- Prior art keywords
- side rails
- rails
- pressure
- positive pressure
- cross
- 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
- 238000007667 floating Methods 0.000 claims description 12
- 238000005339 levitation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
- G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
- G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、磁気記録装置に用いる、磁気変換素
子を有する動圧型浮上式ヘツドに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a hydrodynamic floating head having a magnetic transducer element used in a magnetic recording device.
従来の技術
従来より、磁気デイスク記録装置では、磁気記
録媒体の走行において生ずる動圧を利用して、こ
の磁気記録媒体上に微小すき間を一定に維持して
浮上する浮動式ヘツドが用いられている。この浮
動式ヘツドには、コアとコイルからなる記録再生
用磁気ヘツドが形成されている。一般に、磁気ヘ
ツドは媒体表面に近接せしむる程高密度、高出力
化が可能で、0.2μm以下の浮上量が実用化されて
おり、より一層の低浮上化が求められている。し
かし、媒体がスライダーに対して移動する周速に
関係なく、略一定の浮上距離を保つことが、再生
信号の振幅の変調を防ぎ、信号分解能が改善さ
れ、信頼性が高くなる。Conventional technology Conventionally, magnetic disk recording devices have used floating heads that fly above the magnetic recording medium while maintaining a constant minute gap by using the dynamic pressure generated when the magnetic recording medium runs. . This floating head is formed with a recording/reproducing magnetic head consisting of a core and a coil. In general, the closer a magnetic head is to the surface of the medium, the higher the density and the higher the output.Flying heights of 0.2 μm or less have been put into practical use, and there is a need for even lower flying heights. However, regardless of the circumferential speed at which the medium moves relative to the slider, maintaining a substantially constant flying distance prevents modulation of the amplitude of the reproduced signal, improving signal resolution and increasing reliability.
発明が解決しようとする問題点
媒体に近接して、略一定の距離に浮上するため
には、高い空気膜剛性を有することが求められ、
押圧荷重を大きくする事が望ましいが、従来の正
圧スライダーでは、起動、停止時における媒体と
の接触の観点や走行中の記録媒体及びヘツドの耐
摩耗性の観点からは、大幅な押圧荷重の増加は望
めない。その上、周速に関係なく安定した一定の
浮上量を得ることは、浮上力（正圧力）が周速に
比例するので、不可能な事である。Problems to be Solved by the Invention In order to fly close to the medium at a substantially constant distance, it is required to have high air film rigidity.
It is desirable to increase the pressure load, but with conventional positive pressure sliders, it is difficult to increase the pressure load significantly from the viewpoint of contact with the medium during startup and stop, and from the viewpoint of wear resistance of the recording medium and head during running. There is no hope for an increase. Moreover, it is impossible to obtain a stable and constant flying height regardless of the circumferential speed because the levitation force (positive pressure) is proportional to the circumferential speed.
一方、デイスクの回転速度（周速）が低い場
合、ヘツドの両側レールのみの正圧力では、高い
剛性を満たすに充分な大きさを得ることは難しい
し、目的の浮上量を達することさえ難しい。又、
今までに発表されている負圧力を利用したスライ
ダーでは、負圧力は媒体の定常回転中は浮上高さ
及び浮上姿勢の変動に対して鈍感で、正圧力のみ
に剛性を依存しているので、低浮上時に要求され
る剛性を満たす事は難しくなる。 On the other hand, when the rotational speed (circumferential speed) of the disk is low, it is difficult to obtain a sufficient size to satisfy high rigidity with positive pressure only on both side rails of the head, and it is difficult to even achieve the desired flying height. or,
In sliders that use negative pressure that have been announced so far, negative pressure is insensitive to fluctuations in flying height and flying posture during steady rotation of the medium, and the rigidity depends only on positive pressure. It becomes difficult to satisfy the rigidity required at low levitation.
故に、低浮上時において、周速及び外部荷重に
対して充分大きな剛性を有し、浮上距離を一定に
維持でき、かつ周速の小さい条件下でも安定した
浮上を与える動圧型浮上式スライダーの開発が望
まれる。 Therefore, it is necessary to develop a hydrodynamic floating slider that has sufficient rigidity against peripheral speed and external loads at low levitation, can maintain a constant levitation distance, and provides stable levitation even under low peripheral speed conditions. is desired.
そこで本発明は、以上の問題点を解決するため
に、従来の正圧だけを利用した正圧スライダー及
び負圧力と正圧力を利用した負圧スライダーとは
異なる思想にたつて、
(1) 記録再生動作中、周速変動に関係なく略一定
の距離の浮上量を維持すること
(2) 外部荷重の変動に対して強い剛性を有し、浮
上量の変動が小さいこと
(3) デイスクの片揺れ等に強いこと
(4) 低周速の場合でも充分に上記(1)〜(3)の条件を
満足すること
ができる動圧型浮上式ヘツドを提供することを目
的とする。 Therefore, in order to solve the above problems, the present invention is based on a concept different from the conventional positive pressure slider that uses only positive pressure and the negative pressure slider that uses negative pressure and positive pressure. During playback operation, the flying height must be maintained at an approximately constant distance regardless of circumferential speed fluctuations (2) It must have strong rigidity against external load fluctuations, and fluctuations in the flying height must be small (3) Disc pieces (4) An object of the present invention is to provide a hydrodynamic floating head that can satisfactorily satisfy the conditions (1) to (3) above even at low circumferential speeds.
問題点を解決するための手段
上記目的を達成するため本発明は、
空気ベアリング表面を有するスライダー本体
に、
上記空気ベアリング表面の前部および後部にお
ける両側縁に沿つて、かつ前後方向に距離を隔て
て配向された二組の一対の一定又は不定幅の前後
方向の側レールと、
上記側レール対間に配置され、これら側レール
対の各々に略直交するように接続された一定又は
不定幅の交差レールと、
前記側レール及び交差レールによつて三方また
は四方を囲まれた凹部と、
を形成したものである。Means for Solving the Problems In order to achieve the above object, the present invention provides a slider body having an air bearing surface, along both sides of the front and rear edges of the air bearing surface, and spaced apart in the front and back direction. two pairs of side rails of constant or variable width in the front-rear direction, which are oriented at Cross rails; and a recess surrounded on three or four sides by the side rails and the cross rails.
作 用
このようなものであると、記録媒体が走行する
とき、上記２対の側レールと各々に接続された交
差レールとの上に浮上力（正圧力）を発生せし
め、前部の側レール対と該側レール対し接続され
た前部交差レールとに挟さまれて該交差レールに
続く領域、及び後部の側レール対と該側レール対
に接続された後部の交差レールとに挟まれて該交
差レールに続く領域に、自己荷重力（負圧力）を
発生させる事になる。この正圧力と負圧力は、ス
ライダー本体全体に対して略一定の荷重が生ずる
様な平衡状態にて作用する。依つて、空気流デイ
スクの周速変動に対しては少しも影響される事も
なく、記録再生中は、記録媒体に対して略一定の
浮上距離を維持することが可能となる。Function: When the recording medium runs, a floating force (positive pressure) is generated on the two pairs of side rails and the cross rails connected to each, and the front side rail a region sandwiched between a pair of side rails and a front cross rail connected to the side rail and continuing to the cross rail, and a region sandwiched between a rear side rail pair and a rear cross rail connected to the side rail pair. A self-loading force (negative pressure) will be generated in the area following the crossed rail. The positive pressure and negative pressure act in an equilibrium state such that a substantially constant load is generated on the entire slider body. Therefore, it is not affected in the slightest by variations in the circumferential speed of the airflow disk, and it is possible to maintain a substantially constant flying distance with respect to the recording medium during recording and reproduction.
実施例
本発明の第１の実施例を第１図にもとづいて説
明する。本発明の浮動式ヘツドは、スライダー本
体１に、２対の一定幅の長方形状の側レール１
１，１２，１３，１４と、各々側レール対に略直
交する様接続した交差レール１５，１６と、３〜
４個の側レール１１〜１４又は交差レール１５，
１６にて三方又は四方を囲まれた領域に形成され
た凹部２０，２１，２２とが形成された構成とな
つている。スライダー本体１の前部における一対
の側レール１１，１２の前縁には、テーパー１
７，１８が形成されており、該側レール１１，１
２間に配された交差レール１５には、段付テーパ
ー１９が施されている。Embodiment A first embodiment of the present invention will be described based on FIG. The floating head of the present invention has two pairs of rectangular side rails 1 having a constant width on a slider body 1.
1, 12, 13, 14, cross rails 15, 16 connected to each pair of side rails so as to be substantially orthogonal to each other, and 3 to 14.
four side rails 11 to 14 or cross rails 15,
16, recesses 20, 21, and 22 are formed in a region surrounded on three or four sides. The front edges of the pair of side rails 11 and 12 at the front of the slider body 1 have a taper 1.
7, 18 are formed, and the side rails 11, 1
A stepped taper 19 is provided on the cross rail 15 disposed between the two.
以上の構成にて、大気圧より高い正圧が２対の
側レール１１，１２，１３，１４及び交差レール
１５，１６上に発生し、かつ各レール１１〜１６
にて三方又は四方を囲まれ各々の交差レール１
５，１６に続く凹部２０，２１，２２には大気圧
より低い負圧が発生する。スライダー本体１の長
手軸中心方向X1−X1及び一方の縁の側レール１
１，１３の中心軸方向X2−X2上の圧力分布を、
それぞれ第２図ａ，ｂに示す（圧力Paの分布は、
大気圧Poに対する比で示す）。長手軸中心方向X1
−X1の圧力分布は、第２図ａに示すように、上
記２つの交差レール１５，１６上に正圧を発し、
その交差レールの直後にピークを生じ、徐々に大
気圧に近づく様に負圧を発生する。依つて、上記
両交差レール１５，１６の位置が、正圧−負圧の
バランスを形成しているのがわかる。一方、側レ
ール１１，１３の中心軸方向X2−X2上の圧力分
布は、第２図ｂに示すように、前部、後部にある
上記両側レール１１，１３上に大気圧Poより高
い正圧力Paを生じ、該側レール１１，１３間の
凹部２３は大気圧程度の圧力となつている。故
に、記録媒体によるスライダー本体１の縦振れ及
び垂直方向振動に対して、強い剛性を示すことに
なる。又周速が小さい場合でも、交差レール１
５，１６上の正圧を積極的に利用する事で必要な
浮上力を得る事ができる。 With the above configuration, positive pressure higher than atmospheric pressure is generated on the two pairs of side rails 11, 12, 13, 14 and the cross rails 15, 16, and
Each cross rail 1 surrounded on three or four sides by
Negative pressure lower than atmospheric pressure is generated in the concave portions 20, 21, and 22 following the concave portions 5 and 16. Slider body 1 longitudinal axis center direction X 1 - X 1 and side rail 1 on one edge
The pressure distribution in the central axis direction X 2 −X 2 of 1 and 13 is
They are shown in Figure 2 a and b, respectively (the distribution of pressure Pa is
(expressed as a ratio to atmospheric pressure Po). Longitudinal axis center direction X 1
-X 1 pressure distribution generates positive pressure on the two intersecting rails 15, 16, as shown in FIG. 2a,
A peak occurs immediately after the crossed rails, and a negative pressure is generated that gradually approaches atmospheric pressure. Therefore, it can be seen that the positions of the two intersecting rails 15 and 16 form a balance between positive pressure and negative pressure. On the other hand, as shown in Fig. 2b , the pressure distribution in the central axis direction A positive pressure Pa is generated, and the recess 23 between the side rails 11 and 13 is at about atmospheric pressure. Therefore, the slider body 1 exhibits strong rigidity against longitudinal vibration and vertical vibration caused by the recording medium. Also, even if the circumferential speed is small, the cross rail 1
The necessary levitation force can be obtained by actively utilizing the positive pressure on 5 and 16.
以上の圧力発生にて、正圧力、負圧力を充分に
大きくして、平衡状態において略一定の荷重を発
生させる事が可能であり、第３図に示すように高
い剛性の空気ベアリング薄膜４２を形成できる。
これにより、外部からの荷重変動に対して強い浮
上式ヘツドを構成できる。故に、後部の一対の側
レール１３，１４の後端にレール表面と面一にな
る様接合された磁気変換素子３１Ａ，３１Ｂは、
剛性の強い移動基板３３上の磁気記録媒体３２の
表面の方へ、外部からの低荷重４１にて押付けら
れるときに、該記録媒体３２に対し最小でしかも
一定の浮上距離を維持し続けることができる。
又、第４図に示すように、デイスク速度に対して
も略一定の浮上量を維持する。 By generating the above pressure, it is possible to generate a substantially constant load in an equilibrium state by sufficiently increasing the positive pressure and negative pressure, and as shown in FIG. Can be formed.
This makes it possible to construct a floating head that is resistant to external load fluctuations. Therefore, the magnetic transducer elements 31A and 31B that are joined to the rear ends of the pair of rear side rails 13 and 14 so as to be flush with the rail surface,
When the surface of the magnetic recording medium 32 on the highly rigid moving substrate 33 is pressed by a low external load 41, it is possible to maintain a minimum and constant flying distance with respect to the recording medium 32. can.
Furthermore, as shown in FIG. 4, a substantially constant flying height is maintained even with respect to the disk speed.
スライダー本体１は、セラミツクあるいはフエ
ライト等の材料より成り、凹部２０〜２２の形成
には、ケミカルエツチング法、イオンシーリング
法等が用いられる。すなわち、まずスライダー本
体１の表面を0.1μm以下の平坦度に仕上げ、上記
方法にて凹部２０〜２２を食刻する。食刻深さ
は、デイスク周速、浮上距離、剛性等の条件に応
じて決定される。本実施例の場合、第５図に示す
ように、１〜2μm程度の深さにて最大の負圧が得
られる。 The slider body 1 is made of a material such as ceramic or ferrite, and the recesses 20 to 22 are formed by a chemical etching method, an ion sealing method, or the like. That is, first, the surface of the slider body 1 is finished to a flatness of 0.1 μm or less, and the recesses 20 to 22 are etched using the method described above. The etching depth is determined according to conditions such as disk circumferential speed, flying distance, and rigidity. In the case of this embodiment, as shown in FIG. 5, the maximum negative pressure can be obtained at a depth of about 1 to 2 μm.
本発明の他の実施例を第６図に示す。前実施例
に比べ、前方レール群１１，１２，１５と後方レ
ール群１３，１４，１６との間の凹部２２は段差
を有し、圧力発生が大気圧程度となる食刻深さに
設定してある。又、後部側レール群１３，１４，
１６にもテーパー１７〜１９を付ける事で、より
大きい正圧力を低速でも得ることができる。 Another embodiment of the invention is shown in FIG. Compared to the previous embodiment, the recesses 22 between the front rail groups 11, 12, 15 and the rear rail groups 13, 14, 16 have a step, and are set to a groove depth such that the pressure generated is approximately atmospheric pressure. There is. Also, the rear side rail group 13, 14,
By adding tapers 17 to 19 to 16, a larger positive pressure can be obtained even at low speeds.
発明の効果
以上の様に本発明によれば、
正圧力、負圧力を利用する事で、デイスク周
速に関係なく略一定の浮上距離を維持できる。Effects of the Invention As described above, according to the present invention, by using positive pressure and negative pressure, a substantially constant flying distance can be maintained regardless of the disk circumferential speed.
負圧力を充分に大きく生ぜしめることで、今
までに比し大なる正圧力を発生する事が可能と
なる。又、負圧力を積極的に利用する事で、ス
ライダー本体の浮上姿勢の変動に対し敏感な負
圧力が得られ、正圧力だけを利用した従来の負
圧スライダーに比べ、より高い空気ベアリング
薄膜が得られる。 By generating a sufficiently large negative pressure, it becomes possible to generate a larger positive pressure than ever before. In addition, by actively using negative pressure, a negative pressure that is sensitive to fluctuations in the flying posture of the slider body can be obtained, and compared to conventional negative pressure sliders that only use positive pressure, a higher air bearing thin film can be obtained. can get.
交差レール上の正圧力の積極的な利用によ
り、正圧力を充分に大きく、剛性を高くする事
ができる。 By actively utilizing the positive pressure on the crossed rails, the positive pressure can be sufficiently large and the rigidity can be increased.
以上により、安定した動圧型浮上式ヘツドを実
現する事が可能となる。 As a result of the above, it is possible to realize a stable dynamic pressure type floating head.
第１図は本発明の一実施例の斜視図、第２図は
その圧力分布を示す図、第３図はその走行状態を
示す図、第４図はその浮上量の周速依存性を示す
図、第５図はその凹部の食刻深さと負圧力との関
係を示す図、第６図は本発明の他の実施例の斜視
図である。
１…スライダー本体、１７，１８，１９…テー
パー、１１，１２，１３，１４…側レール、１
５，１６…交差レール、２０，２１，２２…凹
部、３１Ａ，３１Ｂ…磁気変換素子。
Figure 1 is a perspective view of an embodiment of the present invention, Figure 2 is a diagram showing its pressure distribution, Figure 3 is a diagram showing its running state, and Figure 4 is a diagram showing the circumferential speed dependence of its flying height. 5 is a diagram showing the relationship between the etching depth of the recess and the negative pressure, and FIG. 6 is a perspective view of another embodiment of the present invention. 1... Slider body, 17, 18, 19... Taper, 11, 12, 13, 14... Side rail, 1
5, 16...Cross rail, 20, 21, 22... Recess, 31A, 31B... Magnetic conversion element.
Claims (1)
に、 上記空気ベアリング表面の前部および後部にお
ける両側縁に沿つて、かつ前後方向に距離を隔て
て配向された二組の一対の一定又は不定幅の前後
方向の側レールと、 上記側レール対間に配置され、これら側レール
対の各々に略直交するように接続された一定又は
不定幅の交差レールと、 前記側レール及び交差レールによつて三方また
は四方を囲まれた凹部と、 を形成したことを特徴とする動圧型浮上式ヘツ
ド。 ２ 凹部は、段差を有し、場所により深さが異な
るように形成されていることを特徴とする特許請
求の範囲第１項記載の動圧型浮上式ヘツド。 ３ 側レールおよび交差レールの少なくとも一方
は、前部縁にテーパ又は段が形成されていること
を特徴とする特許請求の範囲第１項又は第２項記
載の動圧型浮上式ヘツド。[Claims] 1. A slider body having an air bearing surface, two sets of constant or side rails of variable width in the longitudinal direction; cross rails of fixed or variable width disposed between the pair of side rails and connected to each of the pair of side rails so as to be substantially orthogonal; and the side rails and the cross rails; What is claimed is: 1. A hydrodynamic floating head characterized by forming a recess surrounded on three or four sides; 2. The hydrodynamic floating head according to claim 1, wherein the recess has a step and is formed to have a different depth depending on the location. 3. The hydrodynamic floating head according to claim 1 or 2, wherein at least one of the side rails and the cross rail has a tapered or stepped front edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP234785A JPS61160885A (en) | 1985-01-09 | 1985-01-09 | Dynamic pressure type floating head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP234785A JPS61160885A (en) | 1985-01-09 | 1985-01-09 | Dynamic pressure type floating head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61160885A JPS61160885A (en) | 1986-07-21 |
| JPH0359511B2 true JPH0359511B2 (en) | 1991-09-10 |
Family
ID=11526742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP234785A Granted JPS61160885A (en) | 1985-01-09 | 1985-01-09 | Dynamic pressure type floating head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61160885A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253232A (en) * | 1988-02-08 | 1993-10-12 | Hitachi, Ltd. | Magneto-optical recording apparatus having a magnetic slider with increased rail width |
| JPH01220459A (en) * | 1988-02-29 | 1989-09-04 | Nec Corp | Magnetic head slider |
| US5021906A (en) * | 1989-10-31 | 1991-06-04 | International Business Machines Corporation | Programmable air bearing slider including magnetic read/write element |
| US5200868A (en) * | 1990-05-25 | 1993-04-06 | Seagate Technology, Inc. | Negative pressure air bearing slider having an air bearing surface trailing a negative pressure cavity |
| JPH04301779A (en) * | 1991-03-29 | 1992-10-26 | Nippon Avionics Co Ltd | Wiring test method and auxiliary sheet of printed wiring board |
| US5438467A (en) * | 1992-10-28 | 1995-08-01 | International Business Machines Corporation | Negative pressure air bearing design |
| US5886856A (en) * | 1994-09-19 | 1999-03-23 | Hitachi, Ltd. | Magnetic head slider assembly for magnetic disk recording/reproducing apparatus |
| US5490025A (en) * | 1994-12-08 | 1996-02-06 | International Business Machines Corporation | Air bearing slider with debris deflecting features |
| JP2803639B2 (en) * | 1996-06-10 | 1998-09-24 | 日本電気株式会社 | Magnetic head slider |
| US5796551A (en) * | 1996-10-16 | 1998-08-18 | International Business Machines Corporation | Landing pads for air bearing sliders and method for making the same |
| US6055127A (en) * | 1996-11-13 | 2000-04-25 | Seagate Technology, Inc. | Disc head slider having surface discontinuities to minimize fly stiction |
| WO1999005679A1 (en) | 1997-07-23 | 1999-02-04 | Seagate Technology, Inc. | Positive pressure optical slider having trailing end side pads |
| US5953181A (en) | 1997-10-17 | 1999-09-14 | Nec Corporation | Flying magnetic head slider for a magnetic disk drive |
| US6459546B1 (en) | 1998-07-21 | 2002-10-01 | Seagate Technology Llc | Altitude insensitive disc head slider |
| WO2002011142A2 (en) | 2000-07-28 | 2002-02-07 | Seagate Technology Llc | Disk head slider having cavities for increasing contact stiffness and controlling suction center movement |
| JP4252059B2 (en) | 2005-11-21 | 2009-04-08 | Ｔｄｋ株式会社 | Magnetic head device |
-
1985
- 1985-01-09 JP JP234785A patent/JPS61160885A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61160885A (en) | 1986-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0359511B2 (en) | ||
| US4734803A (en) | Magnetic head air bearing slider | |
| JP3478556B2 (en) | Magnetic head slider | |
| JP2781467B2 (en) | Disk head slider with air support | |
| JPH10228743A (en) | Air bearing slider | |
| JPH0359512B2 (en) | ||
| JPH0468706B2 (en) | ||
| JP3207269B2 (en) | Flight slider for magnetic recording | |
| JPH10125025A (en) | Floating head slider | |
| JPH043594B2 (en) | ||
| JP3044860B2 (en) | Magnetic head slider | |
| US6125005A (en) | Altitude insensitive air bearing using pitch compensation for data storage application | |
| US5685645A (en) | Roll balance sub-ambient pressure air bearing slider | |
| US5889637A (en) | Air bearing magnetic head slider | |
| JP2827980B2 (en) | Floating head slider | |
| JPH09198831A (en) | Air bearing surface of slider for magnetic head | |
| JP2872384B2 (en) | Magnetic head slider and magnetic disk device | |
| JPH03241577A (en) | Floating head slider | |
| JP3438006B2 (en) | Floating magnetic head and its manufacturing method | |
| JP3517673B2 (en) | Slider and rotary disk recorder | |
| JPS63255883A (en) | Floating type slider | |
| JP3105850B2 (en) | Magnetic head | |
| JPH02103714A (en) | Floating type thin film magnetic head slider | |
| JPH08227514A (en) | Magnetic head slider utilizing negative pressure | |
| JP2695836B2 (en) | Magnetic head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |