JPH0695363B2 - Magnetic recording / reproducing device - Google Patents
Magnetic recording / reproducing deviceInfo
- Publication number
- JPH0695363B2 JPH0695363B2 JP62213288A JP21328887A JPH0695363B2 JP H0695363 B2 JPH0695363 B2 JP H0695363B2 JP 62213288 A JP62213288 A JP 62213288A JP 21328887 A JP21328887 A JP 21328887A JP H0695363 B2 JPH0695363 B2 JP H0695363B2
- Authority
- JP
- Japan
- Prior art keywords
- item
- magnetic
- magnetic recording
- recording
- reproducing apparatus
- 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 - Lifetime
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
- G11B5/488—Disposition of heads
- G11B5/4886—Disposition of heads relative to rotating disc
-
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
Landscapes
- Magnetic Record Carriers (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、硬質の磁気ディスクを高速回転させながら、
磁気ディスク面の上に配置した磁気ヘッドにより記録及
び再生を行なう磁気記録再生装置に関し、少なくとも磁
気ディスクの最外周シリンダでは磁気ヘッドを浮上さ
せ、少なくとも最内周シリンダでは磁気ヘッドを磁気デ
ィスク面に実質的に接触させながら、記録及び再生を行
なうことにより、磁気ディスク及び磁気ヘッドの耐久性
を向上させると共に、スペーシングロスを減少させ、高
密度記録を達成できるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention is directed to rotating a hard magnetic disk at high speed.
A magnetic recording / reproducing apparatus for performing recording and reproduction by a magnetic head arranged on the surface of a magnetic disk, wherein the magnetic head is levitated at least at the outermost cylinder of the magnetic disk, and the magnetic head is substantially positioned at the magnetic disk surface at least at the innermost cylinder. By carrying out recording and reproduction while making contact with each other, the durability of the magnetic disk and the magnetic head is improved, the spacing loss is reduced, and high density recording can be achieved.
＜従来の技術＞ この種の磁気記録再生装置は、周知のように、アルミニ
ュムでなる剛性基体上に、磁性微粒子塗布法、メッキ法
またはスパッタ法等の手段によって磁性薄膜を形成した
硬質の磁気ディスクを、高速回転（例えば3600rpm）さ
せることにより、磁気ディスクと浮上型磁気ヘッドとの
間に動圧を発生させ、磁気ヘッドを、微小な空気ベアリ
ングによる浮上量を保って浮上させて、磁気記録．読み
出しを行なう。<Prior Art> As is well known, a magnetic recording / reproducing apparatus of this type is a hard magnetic disk in which a magnetic thin film is formed on a rigid base made of aluminum by means such as a magnetic fine particle coating method, a plating method or a sputtering method. By rotating at high speed (for example, 3600 rpm), a dynamic pressure is generated between the magnetic disk and the levitation type magnetic head, and the magnetic head is levitated while maintaining the levitation amount by a minute air bearing to perform magnetic recording. Read out.
この種の磁気記録再生装置において、高密度磁気記録を
達成するためには、磁気ヘッドの浮上量をできるだけ小
さくし、スペーシングロスを減少させる必要がある。磁
気ヘッド浮上量減少による高密度磁気記録を狙った従来
技術としては、例えば特開昭61−287002号公報に記載さ
れた技術が公知である。この公知技術では、剛性基体上
に磁気記録層を形成した磁気ディスクと磁気ヘッドと
を、実質的に接触させながら、相対的に高速移動させ
て、記録再生を行なうものである。In order to achieve high-density magnetic recording in this type of magnetic recording / reproducing apparatus, it is necessary to minimize the flying height of the magnetic head and reduce the spacing loss. As a conventional technique aiming at high-density magnetic recording by reducing the flying height of the magnetic head, for example, the technique described in JP-A-61-287002 is known. According to this known technique, a magnetic disk having a magnetic recording layer formed on a rigid substrate and a magnetic head are moved substantially at a high speed while being substantially in contact with each other for recording and reproduction.
＜発明が解決しようとする問題点＞ 上述した従来技術によれば、スペーシングロスが小さ
く、優れた記録再生特性及び記録密度特性が得られる。
しかし、磁気ディスク表面に磁気ヘッドを実質的に接触
させて、記録再生を行なうので、磁気ディスクの損傷及
びヘッドクラッシュ等を発生し易いという問題を抱えて
おり、耐久性に不安があった。特に、磁気ディスク表面
がCo−Cr等の金属または合金の場合にはこの不安が大き
かった。<Problems to be Solved by the Invention> According to the above-described conventional technique, a spacing loss is small, and excellent recording / reproducing characteristics and recording density characteristics can be obtained.
However, since the magnetic head is substantially brought into contact with the surface of the magnetic disk to perform recording / reproduction, there is a problem that the magnetic disk is likely to be damaged or a head crash occurs, and there is concern about durability. This anxiety was especially great when the surface of the magnetic disk was a metal or alloy such as Co-Cr.
＜問題点を解決するための手段＞ 上述する従来の問題点を解決するため、本発明は、剛性
基体上に磁気記録層を設けた磁気ディスクを高速回転さ
せながら、前記磁気ディスク面の上に配置した磁気ヘッ
ドにより記録及び再生を行なう磁気記録再生装置におい
て、少なくとも前記磁気ディスクの最外周シリンダでは
前記磁気ヘッドを前記磁気ディスク面から浮上させ、少
なくとも最内周シリンダでは前記磁気ヘッドを前記磁気
ディスク面に実質的に接触させながら、記録及び再生を
行なうことを特徴とする。<Means for Solving the Problems> In order to solve the above-mentioned conventional problems, the present invention provides a method in which a magnetic disk provided with a magnetic recording layer on a rigid substrate is rotated at a high speed while being placed on the surface of the magnetic disk. In a magnetic recording / reproducing apparatus for performing recording and reproduction with a magnetic head arranged, at least the outermost cylinder of the magnetic disk floats the magnetic head above the magnetic disk surface, and at least in the innermost cylinder, the magnetic head moves the magnetic head. It is characterized in that recording and reproduction are performed while being substantially in contact with the surface.
＜作用＞ 本発明においては、磁気ディスクの最外周シリンダで
は、磁気ヘッドを磁気ディスク面から浮上させ、最内周
シリンダでは磁気ヘッドを磁気ディスク面に実質的に接
触させながら、記録再生を行なうので、磁気ヘッドが接
触した場合のダメージが大きくなる外周側において、磁
気ディスクと磁気ヘッドとの接触が起きにくくなる。こ
のため、耐久性が向上する。<Operation> In the present invention, in the outermost cylinder of the magnetic disk, the magnetic head is levitated from the magnetic disk surface, and in the innermost cylinder, the recording / reproduction is performed while the magnetic head is substantially in contact with the magnetic disk surface. The contact between the magnetic disk and the magnetic head is less likely to occur on the outer peripheral side where damage is increased when the magnetic head contacts. Therefore, durability is improved.
また、最内周シリンダでは磁気ヘッドを磁気ディスク面
に実質的に接触させながら、記録再生を行なうので、外
周側シリンダでの浮上量も小さくなり、スペーシングロ
スが減少し、優れた記録再生特性及び記録密度特性が得
られる。In addition, in the innermost cylinder, the recording / reproduction is performed while the magnetic head is substantially in contact with the magnetic disk surface. Therefore, the flying height in the outer cylinder is reduced, the spacing loss is reduced, and the excellent recording / reproduction characteristics are achieved. And recording density characteristics are obtained.
＜実施例＞ 第１図は本発明に係る磁気記録再生装置の正面図、第２
図は同じくその平面図である。図において、１は磁気デ
ィスク、２は磁気ヘッド、３はジンバル系支持装置、４
はヘッド位置決め装置、５はコンピュータ等の制御装置
である。磁気ディスク１は図示しない回転駆動機構によ
り、矢印ａの方向に回転駆動される。磁気ヘッド２はジ
ンバル系支持装置３によって支持され、位置決め装置４
により、回転直径O1上で、矢印b1またはb2の方向に駆動
されて位置決めされ、それによって所定のシリンダT1〜
Tnにおいて、磁気記録．再生が行なわれる。<Example> FIG. 1 is a front view of a magnetic recording / reproducing apparatus according to the present invention, and FIG.
The figure is also a plan view thereof. In the figure, 1 is a magnetic disk, 2 is a magnetic head, 3 is a gimbal support device, 4
Is a head positioning device, and 5 is a control device such as a computer. The magnetic disk 1 is rotationally driven in the direction of arrow a by a rotational driving mechanism (not shown). The magnetic head 2 is supported by a gimbal support device 3, and a positioning device 4
Is driven and positioned in the direction of the arrow b 1 or b 2 on the rotation diameter O 1 , whereby a given cylinder T 1 ~
Magnetic recording at Tn. Playback is performed.
ここで、少なくとも磁気ディスク１の最外周シリンダTn
では、磁気ヘッド２を磁気ディスク１の面から浮上量ｇ
させ、少なくとも最内周シリンダ１では、磁気ヘッド２
を磁気ディスク１の面に実質的に接触させながら、記録
再生を行なう。かかる構成によると、磁気ディスク１と
磁気ヘッド２とが接触した場合のダメージが大きくなる
外周側において、磁気ディスク１と磁気ヘッド２との接
触が起きにくくなり、耐久性が向上する。Here, at least the outermost cylinder Tn of the magnetic disk 1
Then, the flying height g of the magnetic head 2 from the surface of the magnetic disk 1
The magnetic head 2 at least in the innermost cylinder 1.
The recording / reproducing is performed while substantially contacting the surface of the magnetic disk 1. With this configuration, the magnetic disk 1 and the magnetic head 2 are less likely to come into contact with each other on the outer peripheral side where the damage when the magnetic disk 1 and the magnetic head 2 are in contact with each other is large, and the durability is improved.
また、最内周シリンダT1では、磁気ヘッド２を磁気ディ
スク１の面に実質的に接触させながら、記録再生を行な
うので、外周側シリンダT1での浮上量も小さくなり、ス
ペーシングロスが減少し、優れた記録再生特性及び記録
密度特性が得られる。Further, in the innermost peripheral cylinder T 1 , since recording and reproduction are performed while the magnetic head 2 is substantially in contact with the surface of the magnetic disk 1 , the flying height in the outer peripheral cylinder T 1 is also small, and the spacing loss is reduced. And excellent recording / reproducing characteristics and recording density characteristics are obtained.
磁気ヘッド２の駆動に当っては、制御装置５から位置決
め機構４に読み書き指令を与える。位置決め機構４は読
み書き指令に基づいて、ヘッド支持装置３を介して、磁
気ヘッド２を所定のシリンダ位置に移動させ、記録読み
出しを行なう。この種の磁気記録再生装置では、読み書
きの実動作時間よりも、制御装置５からの読み書き指令
を待つ待機時間が著しく長くなるのが普通である。そこ
で、制御装置５からの読み書き指令が定められた時間以
上ない場合は、磁気ヘッド２を最外周シリンダTnの上な
ど、外周側シリンダに退避させて浮上待機させる。こう
することにより、耐久性が一層向上する。In driving the magnetic head 2, the controller 5 gives a read / write command to the positioning mechanism 4. The positioning mechanism 4 moves the magnetic head 2 to a predetermined cylinder position via the head support device 3 based on a read / write command to perform recording / reading. In this type of magnetic recording / reproducing apparatus, the standby time for waiting for a read / write command from the controller 5 is usually significantly longer than the actual read / write operation time. Therefore, when the read / write command from the control device 5 does not occur for a predetermined time or longer, the magnetic head 2 is retracted to the outer cylinder such as the outermost cylinder Tn and floated on standby. By doing so, the durability is further improved.
磁気ディスク１は表面粗さＲMAXが100Å以下、望ましく
は50Å以下の表面性の良好な媒体とする。磁気ディスク
１は、第３図に示すように、剛性基体101の表面に真空
成膜法によって磁気記録層102を形成してある。磁気記
録層102はγ−Fe2O3またはCo−Ni、Co−Cr等の磁性薄膜
として形成する。真空成膜法によって形成される磁気記
録層102の膜厚は0.5μｍ程度以下であるので、剛性基体
101の表面性がそのまま記録層102の表面性として反映さ
れる。従って、剛性基体102としては、表面粗さＲMAXが
100Å以下のものを使用する。そのような剛性基体の具
体例としては、ガラス、化学強化されたソーダアルミノ
珪酸ガラスまたはセラミックを主成分とする剛性基体が
適している。表面粗さＲMAXが100Å以下、特に50Å以下
の範囲では、磁気ディスク１の最外周シリンダTnでの浮
上量ｇを、例えば0.01μｍ〜0.04μｍの小さい値に選定
した場合でも、磁気ディスク１と磁気ヘッド２との衝突
を回避し、耐久性を向上させると共に、スペーシングロ
スを減少させ、高密度記録を達成できる。The magnetic disk 1 is a medium having a surface roughness R MAX of 100 Å or less, preferably 50 Å or less and having a good surface property. In the magnetic disk 1, as shown in FIG. 3, a magnetic recording layer 102 is formed on the surface of a rigid substrate 101 by a vacuum film forming method. The magnetic recording layer 102 is formed as a magnetic thin film of γ-Fe 2 O 3 or Co-Ni, Co-Cr or the like. Since the magnetic recording layer 102 formed by the vacuum film forming method has a thickness of about 0.5 μm or less, it is a rigid substrate.
The surface property of 101 is directly reflected as the surface property of the recording layer 102. Therefore, the surface roughness R MAX of the rigid substrate 102 is
Use less than 100Å. As a specific example of such a rigid substrate, a rigid substrate mainly composed of glass, chemically strengthened soda aluminosilicate glass or ceramic is suitable. In the range where the surface roughness R MAX is 100 Å or less, especially 50 Å or less, even if the flying height g of the outermost peripheral cylinder Tn of the magnetic disk 1 is selected to be a small value of 0.01 μm to 0.04 μm, Collision with the magnetic head 2 can be avoided, durability can be improved, spacing loss can be reduced, and high density recording can be achieved.
磁気記録層102は、γ−Fe2O3等の磁性酸化鉄や磁性窒化
物で構成することができる。また、磁性層が金属や合金
等の場合には、第３図に示すように、表面に酸化物層、
窒化物層102aを設けるか、または第４図に示すように、
表面を酸化皮膜102bとするのが望ましい。こうすること
により、磁気記録層102の耐久性が向上し、極く低浮上
量で記録再生する場合や、コンタクト．スタート．スト
ップ時においても、磁気ディスク１の損傷を防止でき
る。酸化物層及び窒化物層102aは、反応性スパッタ、反
応性蒸着等によって形成できる。また、表面の酸化皮膜
102bは、Co−CrまたはCo−Ni等のように、鉄、コバル
ト、ニッケルのうち、少なくとも一種を含む金属または
合金である磁気記録層102の表面を、反応性プラズマ処
理等により、意図的に酸化して形成できる。磁気ディス
ク１は、磁気記録層102の記録残留磁化が膜面に対して
垂直方向の成分を主成分とする垂直記録、膜面内成分を
主成分とする面内記録のいずれであってもよい。図示は
省略したが、磁気記録層102の表面に潤滑剤を塗布して
もよい。The magnetic recording layer 102 can be made of magnetic iron oxide or magnetic nitride such as γ-Fe 2 O 3 . When the magnetic layer is made of metal or alloy, as shown in FIG. 3, an oxide layer is formed on the surface,
Providing a nitride layer 102a, or as shown in FIG.
It is desirable that the surface be the oxide film 102b. By doing so, the durability of the magnetic recording layer 102 is improved, and when recording / reproducing is performed with an extremely low flying height, or contact. start. Even when stopped, the magnetic disk 1 can be prevented from being damaged. The oxide layer and the nitride layer 102a can be formed by reactive sputtering, reactive evaporation, or the like. Also, the oxide film on the surface
102b is a metal or alloy containing at least one of iron, cobalt, and nickel, such as Co--Cr or Co--Ni, which is used to intentionally subject the surface of the magnetic recording layer 102 to reactive plasma treatment or the like. It can be formed by oxidation. The magnetic disk 1 may be either perpendicular recording whose main component is the residual recording magnetization of the magnetic recording layer 102 in the direction perpendicular to the film surface, or in-plane recording whose main component is the in-plane component of the film. . Although not shown, a lubricant may be applied to the surface of the magnetic recording layer 102.
第５図及び第６図は磁気ヘッド２とジンバル系支持装置
３の組立構造を示す図である。磁気ヘッド２は、セラミ
ック構造体でなるスライダ21の空気流出端部側に読み書
き素子22を付着させ、位置決め装置４によって駆動され
るジンバル系支持装置３により、浮上面23とは反対側の
面24に荷重を加えてピッチ運動及びロール運動を許容す
るように支持する。読み書き素子22はIC製造テクノロジ
と同様のプロセスにしたがって形成された薄膜素子であ
る。5 and 6 are views showing the assembly structure of the magnetic head 2 and the gimbal support device 3. The magnetic head 2 has a read / write element 22 attached to the air outflow end side of a slider 21 made of a ceramic structure, and a gimbal-type support device 3 driven by a positioning device 4 causes a surface 24 opposite to an air bearing surface 23. A load is applied to and supported so as to allow pitch movement and roll movement. The read / write element 22 is a thin film element formed according to a process similar to the IC manufacturing technology.
支持装置３は位置決め装置４に取付けられる剛性アーム
部31に、弾性金属薄板でなる支持体32の一端を、結合具
311、312によって取付け固定すると共に、支持体32の長
手方向の一端にある自由端に、同じく金属薄板でなる可
撓体33を取付け、この可撓体33の下面に、磁気ヘッド２
を取付けた構造となっている（第１図及び第２図参
照）。支持体32は剛性アーム部31に取付けられる部分が
弾性バネ部321となっていて、この弾性バネ部321に連続
して剛性ビーム部322を形成してある。剛性ビーム部322
は両側に折曲げ形成したフランジ322a、322bを有してい
る。可撓体33は支持体32の長手方向軸線と略平行して伸
びる２つの外側可撓性枠部331、332と、支持体32から離
れた端において外側可撓性枠部331、332を連結する横枠
333と、横枠333の略中央部から外側可撓性枠部331、332
に略平行するように伸びていて先端を自由端とした中央
舌状部334とを有して構成され、横枠333のある方向とは
反対側の一端を、支持体32の自由端付近に溶接等の手段
によって取付けてある。The support device 3 has a rigid arm portion 31 attached to the positioning device 4 and one end of a support body 32 made of an elastic thin metal plate and a coupling tool.
The flexible body 33, which is also made of a thin metal plate, is attached to the free end at one end of the support body 32 in the longitudinal direction, and the magnetic head 2 is attached to the lower surface of the flexible body 33.
Is attached (see FIGS. 1 and 2). The support 32 has an elastic spring portion 321 attached to the rigid arm portion 31, and a rigid beam portion 322 is formed continuously with the elastic spring portion 321. Rigid beam part 322
Has flanges 322a, 322b formed by bending on both sides. The flexible body 33 connects the two outer flexible frame portions 331 and 332 extending substantially parallel to the longitudinal axis of the support body 32 and the outer flexible frame portions 331 and 332 at the end apart from the support body 32. Horizontal frame
333 and the outer flexible frame portions 331, 332 from the substantially central portion of the horizontal frame 333.
And a central tongue-shaped portion 334 having a free end at the tip extending substantially in parallel with, and one end on the side opposite to the direction in which the horizontal frame 333 is present, near the free end of the support 32. It is attached by means such as welding.
可撓体33の中央舌状部334の上面には、例えば半球状等
の荷重用突起335が設けられていて、この荷重用突起335
により、支持体32の自由端から中央舌状部334へ荷重を
伝えるようにしてある。中央舌状部334の下面には磁気
ヘッド２の面24を接着等の手段によって固着してある。On the upper surface of the central tongue portion 334 of the flexible body 33, there is provided a load projection 335 having a hemispherical shape, for example.
Thus, the load is transmitted from the free end of the support 32 to the central tongue-shaped portion 334. The surface 24 of the magnetic head 2 is fixed to the lower surface of the central tongue portion 334 by means such as adhesion.
磁気ヘッド２の形状、支持装置３の剛性やバネ圧等は、
磁気ディスク１の回転数を勘案して、少なくとも磁気デ
ィスク１の最外周シリンダTnでは、磁気ヘッド２を磁気
ディスク１の面から浮上させ、少なくとも最内周シリン
ダT1では、磁気ヘッド２を磁気ディスク１の面に実質的
に接触させるように定められる。The shape of the magnetic head 2, the rigidity of the support device 3, the spring pressure, etc.
Considering the number of revolutions of the magnetic disk 1, the magnetic head 2 is levitated from the surface of the magnetic disk 1 at least in the outermost cylinder Tn of the magnetic disk 1, and the magnetic head 2 is moved at least in the innermost cylinder T 1. One surface is defined as being in substantial contact.
＜発明の効果＞ 以上述べたように、本発明に係る磁気記録再生装置は、
少なくとも磁気ディスクの最外周シリンダでは磁気ヘッ
ドを浮上させ、少なくとも最内周シリンダでは磁気ヘッ
ドを磁気ディスク面に実質的に接触させながら、記録及
び再生を行なうことを特徴とするから、磁気ディスク及
び磁気ヘッドの耐久性を向上させると共に、スペーシン
グロスを減少させ、高密度記録を達成した磁気記録再生
装置を提供できる。<Effects of the Invention> As described above, the magnetic recording / reproducing apparatus according to the present invention is
At least the outermost cylinder of the magnetic disk is levitated by the magnetic head, and at least the innermost cylinder is characterized in that the magnetic head is substantially in contact with the surface of the magnetic disk to perform recording and reproduction. It is possible to provide a magnetic recording / reproducing apparatus that improves the durability of the head, reduces the spacing loss, and achieves high density recording.
第１図は本発明に係る磁気記録再生装置の正面図、第２
図は同じくその平面図、第３図は本発明に係る磁気記録
再生装置を構成する磁気ディスクの一部拡大断面図、第
４図は同じく別の実施例における一部拡大断面図、第５
図及び第６図は磁気ヘッドと支持装置の組立構造を示す
図である。 １……磁気ディスク、２……磁気ヘッド ３……支持装置、４……位置決め装置 ５……制御装置FIG. 1 is a front view of a magnetic recording / reproducing apparatus according to the present invention, and FIG.
FIG. 4 is a plan view of the same, FIG. 3 is a partially enlarged cross-sectional view of a magnetic disk constituting a magnetic recording / reproducing apparatus according to the present invention, and FIG. 4 is a partially enlarged cross-sectional view of another embodiment.
6 and 6 are views showing the assembly structure of the magnetic head and the supporting device. 1 ... Magnetic disk, 2 ... Magnetic head 3 ... Supporting device, 4 ... Positioning device 5 ... Control device
Claims (14)
スクを高速回転させながら、前記磁気ディスク面の上に
配置した磁気ヘッドにより記録及び再生を行なう磁気記
録再生装置において、少なくとも前記磁気ディスクの最
外周シリンダでは前記磁気ヘッドを前記磁気ディスク面
から浮上させ、少なくとも最内周シリンダでは前記磁気
ヘッドを前記磁気ディスク面に実質的に接触させなが
ら、記録及び再生を行なうことを特徴とする磁気記録再
生装置。1. A magnetic recording / reproducing apparatus for performing recording and reproduction by a magnetic head arranged on the surface of the magnetic disk while rotating a magnetic disk having a magnetic recording layer on a rigid substrate at a high speed, at least the magnetic disk. In the outermost cylinder, the magnetic head is levitated from the magnetic disk surface, and at least in the innermost cylinder, recording and reproduction are performed while the magnetic head is substantially in contact with the magnetic disk surface. Recording / playback device.
が定められた時間以上ない場合は、前記磁気ヘッドを外
周側シリンダに退避させて浮上待機させることを特徴と
する特許請求の範囲第１項に記載の磁気記録再生装置。2. When the read / write command to be given from the control device does not exist for a predetermined time or more, the magnetic head is retracted to the outer cylinder to stand by for floating. The magnetic recording / reproducing apparatus described.
以下としたことを特徴とする特許請求の範囲第１項また
は第２項に記載の磁気記録再生装置。3. The surface roughness R MAX of the magnetic disk is 100Å
The magnetic recording / reproducing apparatus according to claim 1 or 2, wherein:
あることを特徴とする特許請求の範囲第１項、第２項ま
たは第３項に記載の磁気記録再生装置。4. The magnetic recording / reproducing apparatus according to claim 1, 2, or 3, wherein the substrate has a surface roughness R MAX of 100 Å or less.
特徴とする特許請求の範囲第１項、第２項、第３項また
は第４項に記載の磁気記録再生装置。5. The magnetic recording / reproducing apparatus according to claim 1, 2, 3, 4 or 5, wherein the substrate is mainly composed of glass.
ノ珪酸ガラスを主成分とすることを特徴とする特許請求
の範囲第１項、第２項、第３項または第４項に記載の磁
気記録再生装置。6. The magnetic material according to claim 1, 2, 3 or 4, wherein the substrate is composed mainly of chemically strengthened soda aluminosilicate glass. Recording / playback device.
とする特許請求の範囲第１項、第２項、第３項または第
４項に記載の磁気記録再生装置。7. The magnetic recording / reproducing apparatus according to claim 1, 2, 3, or 4, wherein the base is made of ceramic.
ていることを特徴とする特許請求の範囲第１項、第２
項、第３項、第４項、第５項、第６項または第７項に記
載の磁気記録再生装置。8. The magnetic recording layer according to claim 1, wherein the magnetic recording layer is formed by a vacuum film forming method.
9. The magnetic recording / reproducing apparatus according to item 3, item 3, item 4, item 5, item 6, or item 7.
は窒化物層となっていることを特徴とする特許請求の範
囲第１項、第２項、第３項、第４項、第５項、第６項、
第７項または第８項に記載の磁気記録再生装置。9. The magnetic recording layer according to claim 1, wherein the surface layer is an oxide layer or a nitride layer. Item 5, Item 6,
The magnetic recording / reproducing apparatus according to item 7 or 8.
性スパッタまたは反応性蒸着等のいずれかによって形成
されていることを特徴とする特許請求の範囲第９項に記
載の磁気記録再生装置。10. The magnetic recording / reproducing according to claim 9, wherein the oxide layer and the nitride layer are formed by either reactive sputtering or reactive vapor deposition. apparatus.
っていることを特徴とする特許請求の範囲第１項、第２
項、第３項、第４項、第５項、第６項、第７項または第
８項に記載の磁気記録再生装置。11. The magnetic recording layer has an oxide film on the surface thereof, as claimed in claims 1 and 2.
The magnetic recording / reproducing apparatus according to item (3), item (4), item (5), item (6), item (7), or item (8).
ルのうち、少なくとも一種を含む金属または合金でなる
磁気記録層の表面を、反応性プラズマ処理等により酸化
したものであることを特徴とする特許請求の範囲第11項
に記載の磁気記録再生装置。12. The oxide film is formed by oxidizing the surface of a magnetic recording layer made of a metal or alloy containing at least one of iron, cobalt and nickel by reactive plasma treatment or the like. The magnetic recording / reproducing apparatus according to claim 11.
に対して垂直方向の成分を主成分とすることを特徴とす
る特許請求の範囲第１項、第２項、第３項、第４項、第
５項、第６項、第７項、第８項、第９項、第10項、第11
項または第12項に記載の磁気記録再生装置。13. The remanent recording magnetization of the magnetic disk has a component in a direction perpendicular to a film surface as a main component, as claimed in any one of claims 1, 2, 3, and 4. Item, Item 5, Item 6, Item 7, Item 8, Item 9, Item 10, Item 11
The magnetic recording / reproducing apparatus according to the item 12 or 12.
面内成分を主成分とすることを特徴とする特許請求の範
囲第１項、第２項、第３項、第４項、第５項、第６項、
第７項、第８項、第９項、第10項、第11項または第12項
に記載の磁気記録再生装置。14. The remanent recording magnetization of the magnetic disk is mainly composed of an in-plane component of a film, as claimed in claim 1, claim 2, claim 3, claim 4, claim 5, and claim 5. Term, sixth term,
The magnetic recording / reproducing apparatus according to item 7, item 8, item 9, item 10, item 11, or item 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62213288A JPH0695363B2 (en) | 1987-08-27 | 1987-08-27 | Magnetic recording / reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62213288A JPH0695363B2 (en) | 1987-08-27 | 1987-08-27 | Magnetic recording / reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6455703A JPS6455703A (en) | 1989-03-02 |
| JPH0695363B2 true JPH0695363B2 (en) | 1994-11-24 |
Family
ID=16636632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62213288A Expired - Lifetime JPH0695363B2 (en) | 1987-08-27 | 1987-08-27 | Magnetic recording / reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0695363B2 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4894403A (en) * | 1972-03-14 | 1973-12-05 | ||
| JPS5965934A (en) * | 1982-10-07 | 1984-04-14 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
| JPS59171031A (en) * | 1983-03-18 | 1984-09-27 | Hitachi Ltd | magnetic disk |
| JPS60131682A (en) * | 1983-12-19 | 1985-07-13 | Fujitsu Ltd | Loading system of magnetic disk |
| JPS60223025A (en) * | 1984-04-19 | 1985-11-07 | Tdk Corp | Magnetic recording medium |
| JPS61276182A (en) * | 1985-05-30 | 1986-12-06 | Fujitsu Ltd | Method for controlling floating position of magnetic head |
| JP2568170B2 (en) * | 1985-06-12 | 1996-12-25 | ティーディーケイ株式会社 | Perpendicular magnetization rigid disk recording / reproducing device |
| JPS6243819A (en) * | 1985-08-22 | 1987-02-25 | Tdk Corp | Magnetic recording medium |
| JPS6273426A (en) * | 1985-09-26 | 1987-04-04 | Hoya Corp | Production of magnetic recording medium |
| JPH0760522B2 (en) * | 1986-01-24 | 1995-06-28 | 富士写真フイルム株式会社 | Method of manufacturing perpendicular magnetic recording medium |
-
1987
- 1987-08-27 JP JP62213288A patent/JPH0695363B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6455703A (en) | 1989-03-02 |
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