JPS5821329B2 - floating head slider - Google Patents
floating head sliderInfo
- Publication number
- JPS5821329B2 JPS5821329B2 JP55178196A JP17819680A JPS5821329B2 JP S5821329 B2 JPS5821329 B2 JP S5821329B2 JP 55178196 A JP55178196 A JP 55178196A JP 17819680 A JP17819680 A JP 17819680A JP S5821329 B2 JPS5821329 B2 JP S5821329B2
- Authority
- JP
- Japan
- Prior art keywords
- slider
- magnetic
- floating
- rad
- core
- 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
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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
【発明の詳細な説明】
本発明は、磁気ディスク装置Oこ用いられるコンタクト
スタートストップ方式の磁気へラドスライダに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact start/stop type magnetic rad slider used in magnetic disk drives.
従来から、磁気ディスク装置には記録媒体の走行によっ
て生ずる動圧を利用して記録媒体きの間に微小な隙間を
保って浮上する浮動へラドスライダが用いられており、
この浮動へラドスライダにはコアとコイルとからなる記
録再生用磁気ヘッドが形成されている。Conventionally, magnetic disk drives have used floating RAD sliders that float while maintaining a small gap between the recording media using the dynamic pressure generated by the running of the recording media.
A recording/reproducing magnetic head consisting of a core and a coil is formed on this floating RAD slider.
前記磁気ヘッドは、記録媒体面に近接する程高い記録密
度と大きな出力を得るンことができるため、通常浮動へ
ラドスライダの記′録媒体と対向するスライダ面の最小
隙間位置に形成されるのが一般的である。The magnetic head can obtain a higher recording density and a larger output the closer it is to the recording medium surface, so it is usually formed at the minimum gap position on the slider surface facing the recording medium of a floating RAD slider. Common.
そして、このスライダ面の最小隙間位置は、スライダ面
の形状、負荷力および負荷力の作用点位置によって決定
される。The minimum gap position of the slider surface is determined by the shape of the slider surface, the load force, and the position of the point of application of the load force.
1例えば、第1図に示すように、浮動へラドスライダ1
のスライダ面2を平坦に形成し、このスライダ面2の空
気流入側端部2Aにテーパ高さδtのテーパ面3を形成
してなるテーパフラットモノリシック形スライダにおい
ては、その空気流出端12Bと矢印A方向に走行する磁
気記録媒体4との間の隙間Gが最小隙間を形成するため
、前記流出端2Bに磁気へラドコア5のギャップ7が形
成されている。1 For example, as shown in FIG.
In a tapered flat monolithic slider in which the slider surface 2 is formed flat, and the tapered surface 3 having a taper height δt is formed at the air inflow side end 2A of the slider surface 2, the air outflow end 12B and the arrow mark Since the gap G between the magnetic recording medium 4 traveling in the direction A forms the minimum gap, a gap 7 of the magnetic herad core 5 is formed at the outflow end 2B.
なお、図中6は磁気ヘッドコア5に巻かれた巻線である
。In addition, 6 in the figure is a winding wound around the magnetic head core 5.
また、第2図に示すように、1スライダ面2を円筒面に
形成してなる円筒面浮動へラドスライダにおいては、ク
ラウンハイトδC1負荷力および負荷力の作用位置によ
って最小隙間Gの位置が変化するため、設計時における
円筒面スライダの最小隙間位置に磁気へラドコア5が形
;成されている。In addition, as shown in Fig. 2, in a cylindrical floating Rad slider in which the slider surface 2 is formed as a cylindrical surface, the position of the minimum gap G changes depending on the crown height δC1 load force and the position where the load force is applied. Therefore, the magnetic helical core 5 is formed at the minimum clearance position of the cylindrical slider at the time of design.
ところで、浮動ヘッドスライダを0.2μm程度の微小
な隙間で磁気記録媒体上に浮上させるためには、磁気記
録媒体の表面を完全な鏡面状態に仕上げることが必要で
ある。By the way, in order to make the floating head slider float above the magnetic recording medium with a minute gap of about 0.2 μm, it is necessary to finish the surface of the magnetic recording medium to a perfect mirror finish.
しかし、浮動へラドスライダをコンタクトスタートスト
ップ方式で用いる場合、鏡面状態の磁気ディスク面とテ
ーパフラット形スライダのスライダ面が長時間に亘り密
着状態で放置されると、磁気ディスク面に浮動へラドス
ライダが吸着されてしまうという現象が起る。However, when using a floating RAD slider in a contact start-stop method, if the mirror-like magnetic disk surface and the slider surface of the tapered flat slider are left in close contact for a long time, the floating RAD slider will be attracted to the magnetic disk surface. The phenomenon of being left behind occurs.
このように吸着された状態でコンタクトスタートを開始
すると、ディスク面に傷をけけ、記録情報を破壊するば
かりか、磁気ヘッドの支持系をも破壊することになるの
で、磁気ディスクを停止している時には浮動ヘッドスラ
イダを磁気ディスク面から引き離しておくかあるいは吸
着力を著しく小さくするため接触面積が小さい円筒面ス
ライダを用いることが望ましい。If you start a contact start while the disk is stuck in this way, you will not only scratch the disk surface and destroy the recorded information, but also destroy the magnetic head support system, so stop the magnetic disk. Sometimes it is desirable to keep the floating head slider separate from the magnetic disk surface or to use a cylindrical slider with a small contact area in order to significantly reduce the attraction force.
しかしながら、浮動へラドスライダを磁気ディスク面か
ら引ぎ離す方法は、それなりの機構を必要さし、構造が
複雑になるほか磁気ディスク面およびスライダ面に損傷
を与えずに浮動へラドスライダを磁気ディスク面上に着
地させる制御が困難である。However, the method of separating the floating RAD slider from the magnetic disk surface requires a certain mechanism, the structure is complicated, and the method of separating the floating RAD slider from the magnetic disk surface without damaging the magnetic disk surface and the slider surface. It is difficult to control the landing.
また、円筒面スライダを用いる方法においては、上述し
たようにその最小隙間位置が空気流出端側になく、通常
スライダ面の中央付近にあるため、従来例えばIBM3
330形装置用磁気ヘツドに見られるように、スライダ
の中央部にスリットを設けて磁気へラドコアを挿入する
所謂埋込ヘッド法が採られている。In addition, in the method using a cylindrical surface slider, as mentioned above, the minimum gap position is not on the air outflow end side but is usually near the center of the slider surface.
As seen in the magnetic head for type 330 devices, a so-called embedded head method is used in which a slit is provided in the center of the slider and a magnetic rad core is inserted therein.
しかるに、この埋込ヘッド法においても、:)スリット
形成は機械加工が困難であるため、型加工に依らざるを
得す、精度上問題がある、11)IBM3330形ヘツ
ド用コアに見られるように別個に形成された磁気へラド
コアの主磁路と巻線部磁路を張り合す形式にせざるを得
す、そのため良好な磁路が得られず、しかも磁気抵抗が
高くなって磁気ヘッド効率が通常のモノリシック形ヘッ
ドの60%程度しか得られないという欠点があった。However, even in this embedded head method, slit formation is difficult to machine, so it has to rely on mold processing, which poses problems in terms of accuracy.11) As seen in the core for the IBM 3330 head. The main magnetic path of the magnetic rad core, which is formed separately, and the magnetic path of the winding section must be connected to each other, which makes it impossible to obtain a good magnetic path, and furthermore, the magnetic resistance increases and the efficiency of the magnetic head decreases. This had the disadvantage that it was only about 60% as effective as a normal monolithic head.
。一方、モノリシック形でかつ円筒面コアを想定し、磁
気ヘッドコアのギャップ位置を第1図に示すように従来
のテーパフラットスライダと同程度にした場合には、今
迄に述べたようにギャップ位置がスライダ面の最小隙間
位置と一致せず、実用。. On the other hand, if we assume a monolithic type with a cylindrical core and the gap position of the magnetic head core is made to be the same as that of the conventional tapered flat slider as shown in Figure 1, the gap position will be Practical as it does not match the minimum gap position on the slider surface.
に供し得ない。It cannot be offered to
また、第3図に示すように磁気へラドコア5のギャップ
7を磁気ヘッドスライダ1の中央部に形成した場合は、
磁路長が長くなり、磁気ヘッド効率の低下が大きくなる
と同時に強度も著しく低下するという欠点がある。Furthermore, when the gap 7 of the magnetic helad core 5 is formed in the center of the magnetic head slider 1 as shown in FIG.
The disadvantage is that the magnetic path length becomes longer, the efficiency of the magnetic head is greatly reduced, and the strength is also significantly reduced.
さらにまたづ第4図に示すようにコア部の磁路長を短か
く保ったま〜ギャップ7をコア中央部に位置吋けた場合
は、コイル6の巻線作業が著しく行ないにくくなるとい
う欠点がある。Furthermore, as shown in Fig. 4, if the gap 7 is positioned at the center of the core while keeping the magnetic path length of the core short, there is a drawback that winding the coil 6 becomes extremely difficult. .
本発明は上記したような欠点を解消すべくなされたもの
で、スライダ面を円弧面にすると共に空気流入端側部に
テーパ面を設けるというきわめて簡単な構成により、磁
気ディスク面への吸着を防;止もしくは軽減すると共に
、ギャップ位置をスライダの最小浮上位置に位置させて
磁気ヘッド効率を向上させた磁気へラドスライダを提供
するものである。The present invention has been made to eliminate the above-mentioned drawbacks, and has an extremely simple structure in which the slider surface is made into an arcuate surface and a tapered surface is provided on the side of the air inflow end, thereby preventing adsorption to the magnetic disk surface. ; To provide a magnetic rad slider in which the magnetic head efficiency is improved by stopping or reducing the gap position and positioning the gap at the minimum flying position of the slider.
以下、図面を参照して本発明の詳細な説明する。Hereinafter, the present invention will be described in detail with reference to the drawings.
フ 第5図は本発明に係る磁気へラドスライダの一実施
例を示し、aは正面図、bは底面図、Cは側面図である
。Fig. 5 shows an embodiment of the magnetic herad slider according to the present invention, in which a is a front view, b is a bottom view, and c is a side view.
なお、図中第1図乃至第4図と同一部分は同一符号を以
って示しである。In addition, the same parts as in FIGS. 1 to 4 are indicated by the same reference numerals.
同図において、浮動ヘントスライダ1のスライ1ダ面2
はクラウンハイトδCの円弧面20と空気流入側端部2
Aに形成されたテーパ高さδtのテーパ面3とから構成
されている。In the same figure, the slider 1 surface 2 of the floating hent slider 1
is the circular arc surface 20 of crown height δC and the air inflow side end 2
The tapered surface 3 is formed at A and has a taper height δt.
また浮動へラドスライダ1の空気流出端2Bに磁気へラ
ドコア5が設けられており、このコア5のギャップ1は
前記流出端2Bと磁気記録媒体4との間の最小隙間Gの
位置に位置けけられるように形成されている。A magnetic Rad core 5 is provided at the air outflow end 2B of the floating Rad slider 1, and a gap 1 of the core 5 is positioned at the minimum gap G between the air outflow end 2B and the magnetic recording medium 4. It is formed like this.
なお、磁気へラドスライダ1はフェライトなどの磁性材
料で形成され、磁気へラドコア5はスライダ材から切り
出し加工によって形成した所謂モノリシックヘッドであ
る。The magnetic helad slider 1 is made of a magnetic material such as ferrite, and the magnetic helad core 5 is a so-called monolithic head formed by cutting out the slider material.
また、前記クラウンハイトδCは磁気記録媒体面との吸
着を回避すると同時にテーパ面3の発生圧力が十分高く
なるようにするため0.1μm〜0.4μmの範囲に限
定される。Further, the crown height δC is limited to a range of 0.1 μm to 0.4 μm in order to avoid adhesion to the surface of the magnetic recording medium and at the same time to ensure that the pressure generated on the tapered surface 3 is sufficiently high.
このように本発明の浮動ヘッドスライダはスライダ面2
に円弧面20を形成すると共に、空気流入側端部2Aζ
こテーパ面3を形成したので、前述した従来のスライダ
に比べて空気流入側端部2Aの圧力が犬となり、空気流
出端2B近傍が最小隙間Gとなる安定した浮上姿勢を得
ることができ、良好な磁気ヘッド効率とコイル6の巻線
作業が容易なモノリシックタイプの磁気ヘッドを実現し
得る。In this way, the floating head slider of the present invention has slider surface 2.
The arcuate surface 20 is formed at the air inflow side end 2Aζ
Since this tapered surface 3 is formed, the pressure at the air inflow side end 2A is smaller than that of the conventional slider described above, and a stable floating posture can be obtained with the minimum gap G near the air outflow end 2B. A monolithic magnetic head with good magnetic head efficiency and easy winding work of the coil 6 can be realized.
ここで、本発明と第1図〜第4図に示した従来装置にお
ける構成の機能的相違について説明する。Here, functional differences between the configurations of the present invention and the conventional devices shown in FIGS. 1 to 4 will be explained.
先ず、第1図に示したテーパフラット形スライダにみら
れるように浮動へラドスライダ基本形状の一つであるテ
ーパ面は、平面スライダの流入端に形成されてはじめて
安定な浮上刃を発生させるものとして、また特には、コ
ンタクトスタートストップ方式で用いられる平面スライ
ダにおいて起動時に浮上刃を発生させるものとして良く
知られていることは前述した通りである。First, as seen in the tapered flat slider shown in Figure 1, the tapered surface, which is one of the basic shapes of the floating rad slider, generates a stable floating edge only when it is formed at the inlet end of the flat slider. In particular, as mentioned above, it is well known that a plane slider used in a contact start/stop method generates a flying edge at the time of startup.
一方、第2図に示した従来の円筒面スライダにおいては
、そのクラウンハイトδCを浮上刃が最大となるような
値に設計するのが一般的である。On the other hand, in the conventional cylindrical slider shown in FIG. 2, the crown height δC is generally designed to a value that maximizes the flying edge.
すなわち、クラウンハイトδCはその値が小さ過ぎても
大き過ぎても十分な浮上刃が発生せず、浮上刃が最大と
なる最適値が存在する。That is, if the crown height δC is too small or too large, sufficient floating edges will not be generated, and there is an optimum value at which the floating edges are maximum.
この最適値は、最小浮上量をhoとすれば、hoの2〜
10倍程度である。If the minimum flying height is ho, this optimal value is 2 to 2 of ho.
It is about 10 times as large.
この特性はこの分野で良く知られており、そのため、通
常クラウンハイトδCはり。This characteristic is well known in the field and is therefore usually crown height δC beam.
の4倍程度に設計される。It is designed to be about four times as large as the
これは、この値に設計することにより、クラウンハイト
δCの加工誤差が浮上特性に与える影響を最小にするた
めでもある。This is also because by designing to this value, the influence of machining errors in the crown height δC on the flying characteristics can be minimized.
この場合、流入端部にテーパ面を形成する必要は全くな
く、また、形成しても浮上特性にほとんど影響を与えな
いため、円筒面スライダにテーパ面を形成する例はこれ
まで皆無とされていた。In this case, there is no need to form a tapered surface at the inflow end, and even if it is formed, it has almost no effect on the flying characteristics, so there have been no examples of forming a tapered surface on a cylindrical slider. Ta.
しかるに、本発明はこのような事情にもかかわらすテー
パ面と円弧面を組合わせることにより吸着の回避はもと
より円筒面形スラ・rダζこおいてスライダ面の最小隙
間位置をスライダ面の後端に近づけることに成功したも
のである。However, in spite of these circumstances, the present invention not only avoids adhesion by combining a tapered surface and an arcuate surface, but also allows the minimum gap position of the slider surface to be moved to the rear of the slider surface in the cylindrical surface slider. We succeeded in bringing it closer to the edge.
この場合、円弧面20の目的は浮上力発生ではなく鏡面
に仕上げられた磁気記録媒体面との吸着を回避すること
にあり、テーパ面3の目的は円弧面20に形成されたス
ライダ面2の最小隙間位置をスライダ面2の後端に近づ
けることにある。In this case, the purpose of the arcuate surface 20 is not to generate levitation force but to avoid adhesion to the mirror-finished magnetic recording medium surface, and the purpose of the tapered surface 3 is to prevent the slider surface 2 formed on the arcuate surface 20 from attracting the surface of the magnetic recording medium. The purpose is to bring the minimum gap position closer to the rear end of the slider surface 2.
すなわち、本発明者による実験によれば浮動へラドスラ
イダの浮上量を0.2μm程度にまで微小化するときテ
ーパ面3および円弧面20による効果が顕著に生じるこ
とが確認された。That is, according to experiments conducted by the present inventor, it has been confirmed that when the flying height of the floating RAD slider is reduced to about 0.2 μm, the effects of the tapered surface 3 and the arcuate surface 20 are significant.
具体的には浮上へラドスライダの浮上量を0.2μm程
度にす。Specifically, the flying height of the RAD slider is set to about 0.2 μm.
ると、媒体面の表面粗さとしては中心線平均粗さRaで
0.02μm以下が望ましい。Then, the surface roughness of the medium surface is preferably 0.02 μm or less in terms of center line average roughness Ra.
この場合、前述したようにテーパフラット形のスライダ
をコンタクトスタートストップ方式で用いると吸着現象
が起こる危険性が極めて高い。In this case, as described above, if a tapered flat slider is used in the contact start/stop method, there is an extremely high risk that an adsorption phenomenon will occur.
これを回避するた・めの円弧面20のクラウンハイトδ
Cは0.1μm程度であれば良い。To avoid this, the crown height δ of the arc surface 20
C may be about 0.1 μm.
一方、この場合に前述のクラウンハイトの最適値(δc
/ho=4)を選ぶと、流入端部2Aの浮上隙間は1μ
m程度と大きくなるため、ここにテーパ面を設けてもテ
ーパ面の効果が無くなり、最小隙間位置をスライダ面の
後端、部に近づけることができなくなってしまう。On the other hand, in this case, the optimal value of the crown height (δc
/ho=4), the floating clearance at the inflow end 2A is 1μ.
Since the gap becomes as large as approximately m, even if a tapered surface is provided here, the effect of the tapered surface is lost, and it becomes impossible to bring the minimum gap position closer to the rear end of the slider surface.
したがって、このテーパ面の効果を発揮させるためには
浮上量0.2μm前後の領域においてδCを0.1μm
〜0.4μmの範囲に設定することが望ましいとされる
。Therefore, in order to exhibit the effect of this tapered surface, δC should be set to 0.1 μm in the region around the flying height of 0.2 μm.
It is said that it is desirable to set it in the range of ~0.4 μm.
ノ 第6図は本発明の他の実施例を示し、、aはヘッド
の正面図、bは底面図、Cは側面図である。FIG. 6 shows another embodiment of the present invention, in which a is a front view of the head, b is a bottom view, and C is a side view.
この実施例においては、スライダ材の空気流出端部側2
Bに巻線処理用の溝加工を施し、この溝に磁気へラドコ
ア5を埋込んだ点を除き、他の構i成は全て第5図に示
した実施例と同様である。In this embodiment, the air outlet end side 2 of the slider material is
All other configurations are the same as the embodiment shown in FIG. 5, except that B is grooved for winding processing and the magnetic rad core 5 is embedded in this groove.
このような構成においても、空気流入端2人のテーパ面
3の作用により磁気記録媒体4との間の最小隙間Gが流
出端部2B近傍に得られるため、上記実施例と同様の効
果が得られるほか、強度が)十分な埋込みタイプの磁気
ヘッドを実現できる。Even in this configuration, the minimum gap G between the two air inflow ends and the magnetic recording medium 4 is obtained in the vicinity of the outflow end 2B due to the action of the tapered surfaces 3 of the two air inflow ends, so that the same effect as in the above embodiment can be obtained. In addition, it is possible to realize an embedded type magnetic head with sufficient strength.
以上説明したように本発明に係る浮動へラドスライダに
よれば、スライダ面を円弧面に形成すると共に、空気流
入側端にテーパ面を形成したので、磁気ディスク面への
吸着を防止もしくは著しく軽、減することができ、また
テーパ面の作用により最小隙間が空気流出端近傍に位置
するような浮上姿勢が得られるため、磁気ヘッド効率の
向上が計へしかもコイルの巻線作業が容易な磁気ヘッド
コアの形成が可能となる。As explained above, according to the floating RAD slider according to the present invention, the slider surface is formed into an arcuate surface, and a tapered surface is formed at the end on the air inflow side, so that adsorption to the magnetic disk surface is prevented or significantly reduced. Moreover, the tapered surface provides a flying posture in which the minimum gap is located near the air outflow end, which improves the efficiency of the magnetic head and makes it easier to wind the coil. It becomes possible to form
・図面の簡単な説明
第1図および第2図は従来の浮動へラドスライダの一例
を示す正面図、第3図および第4図は従来の浮動へラド
スライダの欠点を説明するためのもので、それぞれaは
正面図、bは底面図、第5図は本発明による浮動へラド
スライダの一実施例を示し、aは正面図、bは底面図、
Cは側面図、第6図は本発明の他の実施例を示し、aは
正面図、bは底面図、Cは側面図である。・Brief description of the drawings Figures 1 and 2 are front views showing an example of a conventional floating Radoslider, and Figures 3 and 4 are for explaining the drawbacks of the conventional floating Radoslider. a is a front view, b is a bottom view, FIG. 5 shows an embodiment of the floating Radoslider according to the present invention, a is a front view, b is a bottom view,
C is a side view, FIG. 6 shows another embodiment of the present invention, a is a front view, b is a bottom view, and C is a side view.
1・・・・・・浮動へラドスライダ、2・・・・・・ス
ライダ面、2A・・・・・・空気流入側端部、2B・・
・・・・空気流出端、3・・・・・・テーパ面、4・・
・・・・磁気記録媒体、5・・・・・・磁気へラドコア
、6・・・・・・コイル、20・・・・・・円弧面。1...Floating RAD slider, 2...Slider surface, 2A...Air inflow side end, 2B...
...Air outflow end, 3...Tapered surface, 4...
... Magnetic recording medium, 5 ... Magnetic helad core, 6 ... Coil, 20 ... Arc surface.
Claims (1)
において そのスライダ面を円弧面に形成すると共に、
その空気流入側端部にテーパ面を形成し、前記スライダ
面と磁気記録媒体面との最小隙間を空気流出端近傍に位
置させたことを特徴とする浮動へラドスライダ。1. In a floating RAD slider floating above the surface of a magnetic recording medium, the slider surface is formed into an arcuate surface, and
1. A floating rad slider, characterized in that a tapered surface is formed at the air inflow side end, and the minimum gap between the slider surface and the magnetic recording medium surface is located near the air outflow end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55178196A JPS5821329B2 (en) | 1980-12-17 | 1980-12-17 | floating head slider |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55178196A JPS5821329B2 (en) | 1980-12-17 | 1980-12-17 | floating head slider |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56153558A JPS56153558A (en) | 1981-11-27 |
JPS5821329B2 true JPS5821329B2 (en) | 1983-04-28 |
Family
ID=16044257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55178196A Expired JPS5821329B2 (en) | 1980-12-17 | 1980-12-17 | floating head slider |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5821329B2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972279A (en) * | 1981-10-23 | 1990-11-20 | Applied Magnetics Corporation | Microminimonolithic magnetic head slider |
US4823216A (en) * | 1987-10-23 | 1989-04-18 | Applied Magnetics Corporation | Microminimonolithic magnetic head slider |
JPS58170059U (en) * | 1982-05-07 | 1983-11-12 | 株式会社日立製作所 | floating magnetic head |
JPS6224489A (en) * | 1985-07-25 | 1987-02-02 | Fujitsu Ltd | Magnetic head slider |
US4870520A (en) * | 1986-05-29 | 1989-09-26 | Magnetic Peripherals Inc. | Read/write head with side winding slot |
JP2518826B2 (en) * | 1986-10-09 | 1996-07-31 | 株式会社日立製作所 | Floating magnetic head |
US5081553A (en) * | 1988-03-31 | 1992-01-14 | Applied Magnetics Corporation | Combination of elongated load arm and microminimonolithic head slider |
US5124865A (en) * | 1988-03-31 | 1992-06-23 | Applied Magnetics Corporation | Microminimonolithic magnetic head slider having vertically extending slots to reduce flux leakage losses |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50125713A (en) * | 1974-03-19 | 1975-10-03 |
-
1980
- 1980-12-17 JP JP55178196A patent/JPS5821329B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50125713A (en) * | 1974-03-19 | 1975-10-03 |
Also Published As
Publication number | Publication date |
---|---|
JPS56153558A (en) | 1981-11-27 |
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