JPH033113A - Method for preparing servo pattern in fixed magnetic disk storage device - Google Patents
Method for preparing servo pattern in fixed magnetic disk storage deviceInfo
- Publication number
- JPH033113A JPH033113A JP1137247A JP13724789A JPH033113A JP H033113 A JPH033113 A JP H033113A JP 1137247 A JP1137247 A JP 1137247A JP 13724789 A JP13724789 A JP 13724789A JP H033113 A JPH033113 A JP H033113A
- Authority
- JP
- Japan
- Prior art keywords
- servo pattern
- magnetic
- storage device
- disk storage
- servo
- 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
- 238000000034 method Methods 0.000 title claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 239000013043 chemical agent Substances 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 claims description 2
- 230000007261 regionalization Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 238000012993 chemical processing Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は固定磁気ディスク記憶装置に於けるサーボパ
ターン形成方法に関するものであり、特にサーボライタ
装置によらず、ハードディスクに直接サーボパターンを
書込む固定磁気ディスク記憶装置に於けるサーボパター
ン形成方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a servo pattern forming method in a fixed magnetic disk storage device, and in particular a method for writing servo patterns directly onto a hard disk without using a servo writer device. The present invention relates to a servo pattern forming method in a fixed magnetic disk storage device.
［従来の技術］
従来、固定磁気ディスク記憶装置に於て、データの書込
み並びに読出し時にデータヘッドの位置決め情報を得る
方法として、データ記録面の所定位置にサーボパターン
を書込むか、或はハードディスクの一面を位置決め情報
専用面としてサーボパターンを書込んでいる。[Prior Art] Conventionally, in a fixed magnetic disk storage device, as a method of obtaining data head positioning information when writing and reading data, a servo pattern is written at a predetermined position on the data recording surface, or a servo pattern is written at a predetermined position on the data recording surface. One side is dedicated to positioning information and a servo pattern is written on it.
［発明が解決しようとする課題］
前述した従来の固定磁気ディスク記憶装置のハードディ
スクにサーボパターンを書込む場合は、サーボの方式に
よってハードディスクをサーボライタ装置に装着して書
込むか、或は固定磁気ディスク記憶装置のデータヘッド
にて書込んでいる。前記書込み作業は相当の時間を要す
るため、量産性に限界があり生産効率の向上が要求され
ている。[Problems to be Solved by the Invention] When writing a servo pattern on the hard disk of the conventional fixed magnetic disk storage device described above, it is necessary to attach the hard disk to a servo writer device using a servo method, or to write a servo pattern on the hard disk of the conventional fixed magnetic disk storage device. Writing is performed using the data head of the disk storage device. Since the writing operation requires a considerable amount of time, there is a limit to mass productivity, and improvements in production efficiency are required.
そこで、サーボライタ装置等によらず、ハードディスク
単体に予めサーボパターンを形成して、量産性を改善す
るために解決せられるべき技術的課題が生じてくるので
あり、本発明は該課題を解決することを目的とする。Therefore, a technical problem arises that needs to be solved in order to improve mass productivity by forming a servo pattern on a single hard disk in advance without using a servo writer device, etc., and the present invention solves this problem. The purpose is to
［課題を解決するための手段］
この発明は上記目的を達成する°ために提案されたもの
であり、固定磁気ディスク記憶装置に装着するハードデ
ィスクの記録面にトラックサーボ信号用のセクタを設定
し、レーザ或は化学薬品等の磁性体の磁化作用消失手段
によって前記セクタの各シリンダに対応する適宜個所を
非磁性部とし、該非磁性部と残存する磁性部とによって
固定磁気ディスク記憶装置のデータヘッド位置決め用の
サーボパターンを形成したことを特徴とする固定磁気デ
ィスク記憶装置に於けるサーボパターン形成方法を提供
せんとするものである。[Means for Solving the Problems] The present invention has been proposed to achieve the above object, and includes setting sectors for track servo signals on the recording surface of a hard disk installed in a fixed magnetic disk storage device, A suitable portion corresponding to each cylinder of the sector is made into a non-magnetic portion by means of eliminating the magnetization effect of a magnetic substance such as a laser or a chemical agent, and the data head of a fixed magnetic disk storage device is positioned by the non-magnetic portion and the remaining magnetic portion. It is an object of the present invention to provide a method for forming a servo pattern in a fixed magnetic disk storage device, which is characterized in that a servo pattern is formed for use in a fixed magnetic disk storage device.
［作用］
この発明は、固定磁気ディスク記憶装置に装着すべきハ
ードディスクの記録面の適宜部位に、例えばレーザ加工
を施して前記部位の磁性体を除去するか、或は化学薬品
処理によって前記部位の素性を変化させて非磁性化する
。該非磁性部は読出し出力が０であることから、信号の
有無により構成されるサーボパターンの無信号部分に前
記非磁性部を配設してトラックサーボ信号とし、データ
ヘッドの位置決めを行うことができる。[Operation] The present invention applies laser processing to an appropriate portion of the recording surface of a hard disk to be installed in a fixed magnetic disk storage device to remove the magnetic material from the portion, or chemical treatment to remove the magnetic material from the portion. It changes its identity and becomes non-magnetic. Since the readout output of the non-magnetic portion is 0, the non-magnetic portion can be arranged in the non-signal portion of the servo pattern formed by the presence or absence of a signal to generate a track servo signal and position the data head. .
［実施例］
以下、この発明の一実施例を別紙添付図面に従って詳述
する。尚、説明の都合上、従来公知に属する技術事項も
同時に説明する。[Example] Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings. For convenience of explanation, conventionally known technical matters will also be explained at the same time.
第１図はハードディスク（１）の記録面（２）の−面を
示し、該記録面（２）にインデックスサーボ方式のサー
ボパターン（３）を形成している。該サーボパターン（
３）は第２図の解説図に示すように、回転方向に於て前
後に２分割され、シリンダ（４）（４）・・・のトラッ
ク幅並びに数量に対応させて非磁性部（５）（５）・・
・と磁性部（６）（６）・・・とから構成される。前記
非磁性部（５Ｘ５）・・・は、前記２分割された一方の
磁性体をレーザ加工にて除去し、且つ、半径方向に交互
に配列されるように形成する。即ち、隣接するシリンダ
（４）（４）・・・では非磁性部（５）（５）・・・を
対称的に配列し、後述するデータヘッド（７）のトラッ
キング制御用のサーボパターン（３）として作用させる
ようにしている。FIG. 1 shows the negative side of a recording surface (2) of a hard disk (1), on which a servo pattern (3) of an index servo type is formed. The servo pattern (
3) is divided into two parts, front and rear in the rotational direction, as shown in the explanatory diagram of Fig. (5)...
・It is composed of magnetic parts (6), (6), and so on. The non-magnetic portions (5×5) are formed by removing one of the two divided magnetic bodies by laser processing, and are arranged alternately in the radial direction. That is, in adjacent cylinders (4), (4), non-magnetic parts (5), (5), etc. are arranged symmetrically, and a servo pattern (3) for tracking control of a data head (7), which will be described later, is arranged symmetrically. ).
而して、前記ハードディスク（１）を固定磁気ディスク
記憶装置（図示せず）に装着し、前記サーボパターン（
３）の磁性部（６）（６）・・・にサーボ信号を書込み
、記録面（２）に記憶データを書込む。然る後、記憶デ
ータ読出し時にデータヘッド（７）を、例えば第２図に
示すトラック（Ａ）に位置させた場合は、インデックス
信号に続くサーボパターン（３）の出力は磁性部（６）
の信号に続いて非磁性部（５）の無信号状態となる。Then, the hard disk (1) is attached to a fixed magnetic disk storage device (not shown), and the servo pattern (
3) write servo signals to the magnetic parts (6), (6), etc., and write storage data to the recording surface (2). Thereafter, when the data head (7) is positioned, for example, on the track (A) shown in FIG.
Following the signal, the non-magnetic portion (5) becomes in a no-signal state.
ここで、データヘッド（７）のトラッキングが変位して
いると、同図中、上下に隣接するシリンダ（４）（４）
の何れか一方のサーボパターン（３〉に設けた磁性部（
６）（６）からの信号が前記データヘッド（７）に入力
される。然るときは、トラッキングが変位していると判
断でき、前記入力がＯとなるようにデータヘッド（７）
の位置を移動して、正確にトラッキングを制御すること
ができる。Here, if the tracking of the data head (7) is displaced, the vertically adjacent cylinders (4) (4) in the same figure
The magnetic part (
6) The signal from (6) is input to the data head (7). When this happens, it can be determined that the tracking is displaced, and the data head (7) is adjusted so that the input becomes O.
Tracking can be precisely controlled by moving the position of the
尚、上記サーボパターン（３）の形状等はこの実施例に
限定せられるべきではなく、又、インデックスサーボ方
式に限らずセクターサーボ方式等の他の方式にも適用で
きる。又、前記非磁性部（５）（５）・・・は化学薬品
による磁性体の素性変化等の手段により非磁性化して形
成してもよい。Note that the shape of the servo pattern (3) is not limited to this embodiment, and can be applied not only to the index servo method but also to other methods such as the sector servo method. Further, the non-magnetic portions (5), (5), etc. may be formed by making the magnetic material non-magnetic by changing the properties of the magnetic material using chemicals or the like.
而して、この発明は、この発明の精神を逸脱しない限り
種々の改変を為す事ができ、そして、この発明が該改変
せられたものに及ぶことは当然である。Therefore, this invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that this invention extends to such modifications.
［発明の効果］
この発明は上記一実施例に詳述したように、固定磁気デ
ィスク記憶装置に内蔵すべきハードディスクの記録面を
、レーザ加工或は化学薬品処理等の手段によって加工し
、前記記録面の磁性体の適宜部分を除去又は素性変化さ
せて非磁性部を形成する。そして、該非磁性部の形状を
前記ハードディスクに設定するシリンダに対応させてト
ラック制御用のサーボパターンを形成している。従って
、該サーボパターンをデータヘッドにて読出し、その読
出し出力によって前記データヘッドの位置を制御し、所
定のトラックに位置決めすることができる。[Effects of the Invention] As detailed in the above embodiment, the present invention processes the recording surface of a hard disk to be built into a fixed magnetic disk storage device by means such as laser processing or chemical processing, and A non-magnetic portion is formed by removing or changing the nature of an appropriate portion of the magnetic material on the surface. Then, a servo pattern for track control is formed by making the shape of the non-magnetic portion correspond to the cylinder set in the hard disk. Therefore, the servo pattern can be read out by the data head, and the position of the data head can be controlled by the readout output to position the data head on a predetermined track.
そして、前記サーボパターンはサーボライタ装置、或は
固定磁気ディスク記憶装置本体のデータヘッドによらず
、ハードディスク単体に直接形成できるので、量産性が
著しく向上する。又、前記サーボパターンの非磁性部は
磁気等の外因によって磁化されることがないので、例え
ば誤操作等によりサーボパターンが消去される虞れはな
く、信頼性の向上にも寄与できる。Furthermore, since the servo pattern can be formed directly on the hard disk alone, without using a servo writer device or a data head of the fixed magnetic disk storage device, mass productivity is significantly improved. Furthermore, since the non-magnetic portion of the servo pattern is not magnetized by external factors such as magnetism, there is no risk of the servo pattern being erased due to, for example, erroneous operation, which can also contribute to improved reliability.
図は本発明の一実施例を示し、第１図はハードディスク
の平面図、第２図は前記ハードディスクのサーボパター
ンを示す一部切欠解説図である。
（１）・・・・・・ハードディスク （２）・・・・・
・起録面（３）・・・・・・サーボパターン （４）・
・・・・・シリンダ（５）・・・・・・非磁性部
（６）・・・・・・磁性部（７）・・・・・・データ
ヘッド
第１図The drawings show an embodiment of the present invention; FIG. 1 is a plan view of a hard disk, and FIG. 2 is a partially cutaway explanatory view showing a servo pattern of the hard disk. (1)...Hard disk (2)...
・Starting surface (3)... Servo pattern (4)・
...Cylinder (5) ...Non-magnetic part
(6)...Magnetic part (7)...Data head Figure 1
Claims (1)
記録面にトラックサーボ信号用のセクタを設定し、レー
ザ或は化学薬品等の磁性体の磁化作用消失手段によつて
前記セクタの各シリンダに対応する適宜個所を非磁性部
とし、該非磁性部と残存する磁性部とによつて固定磁気
ディスク記憶装置のデータヘッド位置決め用のサーボパ
ターンを形成したことを特徴とする固定磁気ディスク記
憶装置に於けるサーボパターン形成方法。Sectors for track servo signals are set on the recording surface of a hard disk installed in a fixed magnetic disk storage device, and appropriate locations corresponding to each cylinder of the sectors are set using a magnetization effect eliminating means of a magnetic material such as a laser or a chemical agent. Servo pattern formation in a fixed magnetic disk storage device, characterized in that the nonmagnetic portion and the remaining magnetic portion form a servo pattern for positioning a data head of the fixed magnetic disk storage device. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137247A JPH033113A (en) | 1989-05-30 | 1989-05-30 | Method for preparing servo pattern in fixed magnetic disk storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137247A JPH033113A (en) | 1989-05-30 | 1989-05-30 | Method for preparing servo pattern in fixed magnetic disk storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033113A true JPH033113A (en) | 1991-01-09 |
Family
ID=15194210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1137247A Pending JPH033113A (en) | 1989-05-30 | 1989-05-30 | Method for preparing servo pattern in fixed magnetic disk storage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000049610A1 (en) * | 1999-02-17 | 2000-08-24 | Imation Corp. | Multibeam laser servowriting of magnetic data storage media |
-
1989
- 1989-05-30 JP JP1137247A patent/JPH033113A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000049610A1 (en) * | 1999-02-17 | 2000-08-24 | Imation Corp. | Multibeam laser servowriting of magnetic data storage media |
| US6365061B1 (en) | 1999-02-17 | 2002-04-02 | Imation Corp. | Multibeam laser servowriting of magnetic data storage media |
| US6808648B2 (en) | 1999-02-17 | 2004-10-26 | Imation Corp. | Multibeam laser servowriting of magnetic data storage media |
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