JPS63239618A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPS63239618A JPS63239618A JP7179587A JP7179587A JPS63239618A JP S63239618 A JPS63239618 A JP S63239618A JP 7179587 A JP7179587 A JP 7179587A JP 7179587 A JP7179587 A JP 7179587A JP S63239618 A JPS63239618 A JP S63239618A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- area
- head
- magnetic
- magnetic 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.)
- Pending
Links
- 230000003746 surface roughness Effects 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
-
- 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
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、コンタクトスタートストップを行う方式の
磁気ディスク装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a contact start/stop type magnetic disk drive.
第３図、第４図は例えば特開昭５７−１６７１３５号公
報に示された従来のこの種の磁気ディスク装置であり、
磁気ディスク（１）にランディング領域（２）と情報記
録領域（３）が形成されている。（４）は母気ヘッドで
ある。FIGS. 3 and 4 show a conventional magnetic disk device of this type, as disclosed in, for example, Japanese Unexamined Patent Publication No. 57-167135.
A landing area (2) and an information recording area (3) are formed on a magnetic disk (1). (4) is the mother air head.
ランディング領域（２）の表面粗さは、情報記録領域（
３）の表面粗さより粗になっている。The surface roughness of the landing area (2) is the information recording area (
The surface roughness is rougher than 3).
以上の構成により、第４図に示すように、ランディング
領域（２）の表面粗さは情報記録領域（３）の表面粗さ
より粗にして、ランディング領域（２）で吸着現象が起
きないよう圧している。磁気ヘッド（４）は磁気ディス
ク（１）の非回転期間中に吸着現象が起きないランディ
ング領域（２）Ｋ停止しており、このランディング領域
（２）でコンタクトスタートストップ（以下Ｃ８Ｓと称
する）を行うことにより、吸着現象による磁気ディスク
装置の信頼性低下を防いでいる。With the above configuration, as shown in Figure 4, the surface roughness of the landing area (2) is made rougher than that of the information recording area (3), and pressure is applied to prevent the adsorption phenomenon from occurring in the landing area (2). ing. The magnetic head (4) is stopped in the landing area (2) K where no adsorption phenomenon occurs during the non-rotation period of the magnetic disk (1), and the contact start/stop (hereinafter referred to as C8S) is performed in this landing area (2). By doing so, the reliability of the magnetic disk device is prevented from decreasing due to the adsorption phenomenon.
従来の磁気ディスク装置は以上のように構成されている
ので、Ｃ８Ｓを行５ランディング領域（２）の表面は粗
いため磁気ヘッド（４）の摺動特性は良くない。このた
め、Ｃ８Ｓ回数が増加するにつれランディング領域（２
）の表面は徐々に荒れだし、磁気ヘッド（４）の摺動面
に傷が入ったりして、磁気ヘッド（４）の正常な浮揚状
態を実現できなくなる。そうすると、磁気ヘット責４）
は磁気ディスク（１）の表面に接触したまま磁気ディス
ク（１）が回転する回転することになり、以後の情報の
書き込み、読み出しが全く不可能になるという致裾的な
傷害を起こすという問題点があった。Since the conventional magnetic disk device is constructed as described above, the surface of the C8S row 5 landing area (2) is rough, so that the sliding characteristics of the magnetic head (4) are not good. Therefore, as the number of C8S increases, the landing area (2
) gradually becomes rough, and the sliding surface of the magnetic head (4) becomes scratched, making it impossible to achieve a normal floating state of the magnetic head (4). Then, the magnetic head 4)
The problem is that the magnetic disk (1) rotates while in contact with the surface of the magnetic disk (1), resulting in a fatal injury in which it becomes impossible to write or read information in the future. was there.
この発明は上記のような問題点を解消するためＫなされ
たもので、磁気ディスクの非回転期間中に吸着現象を起
こさず、また、Ｃ８Ｓ時の摺動特性を良くすることによ
り信頼性の高い磁気ディスク装置を得ることを目的とす
る。This invention was made to solve the above problems, and it does not cause adhesion during the non-rotation period of the magnetic disk, and has high reliability by improving the sliding characteristics during C8S. The purpose is to obtain a magnetic disk device.
この発明に係る磁気ディスク装置は、磁気ディスクの非
回転期間中、磁気ヘッドを磁気ディスクの表面粗さの粗
い領域に停止させておき、磁気ディスクの回転開始前に
磁気ディスクの表面粗さが小さく摺動特性の良い領域に
磁気ヘッドを移動させてから磁気ディスクを回転させて
Ｃ８Ｓを行うようになっている。In the magnetic disk device according to the present invention, the magnetic head is stopped in an area of the magnetic disk where the surface roughness is rough during the non-rotation period of the magnetic disk, and the surface roughness of the magnetic disk is small before the rotation of the magnetic disk starts. After moving the magnetic head to an area with good sliding characteristics, the magnetic disk is rotated to perform C8S.
この発明においては、磁気ヘッドを磁気ディスクの表面
粗さの粗い領域に停止させておくことにより、磁気ディ
スクの非回転期間中に吸着現象を起こさず、また、磁気
ディスクの回転開始前に磁気ヘッドを磁気ディスクの表
面粗さが小さく摺動特性の良い領域に移動させることに
より、Ｃ８Ｓ時の磁気ヘッドの浮揚特性を良くする。In this invention, by stopping the magnetic head in an area with a rough surface of the magnetic disk, an adhesion phenomenon does not occur during the non-rotation period of the magnetic disk, and the magnetic head is stopped before the magnetic disk starts rotating. By moving the magnetic head to an area of the magnetic disk where the surface roughness is small and the sliding characteristics are good, the flying characteristics of the magnetic head during C8S are improved.
第１図はこの発明の一実施例を示し、第１１囚において
、（５）は磁気ヘッド（４）に吸着現象が生じないよ５
Ｋ、表面粗さを粗くした磁気ヘッド停止領域である。FIG. 1 shows an embodiment of the present invention.
K is a magnetic head stopping area with roughened surface roughness.
その他、第３１忙おけると同一符号は互いに同一の部分
を示している。In addition, the same reference numerals as in the 31st model indicate the same parts.
以上の構成により、磁気ディスク（１）の非回転中は、
第１１囚に示すよ５Ｋ、磁気ヘッド（４）を磁気ディス
ク（１）の表面粗さの粗い磁気へ・ラド停止領域（５）
Ｋ停止しておき、磁気ディスク（１）が回転する前に、
同図（匂を示すようＫ、磁気ヘッド（４）を表面粗さの
小さい摺動特性の良い情報記録領域（３） Ｋ移動する
。移動が終ると、同図（Ｏに示すよ５に、磁気ディスク
（１）が回転を開始し、磁気ディスク（１）が定常回転
に達すると、同図（至）のように磁気ヘッド（４）で情
報の書き込み、読み出しを行う。゛磁気ディスク（１）
の運転を終え、同図（Ｅ）のようＫ、磁気ディスク（１
）の回転が停止し始め、停止が完了すると、同図（Ｆ）
のように、磁気ヘッド（４）は磁気ヘッド停止領域（５
）に移動し、磁気ディスク装置の運転は完了する。With the above configuration, while the magnetic disk (1) is not rotating,
As shown in the 11th prisoner, 5K, the magnetic head (4) is connected to the rough magnetic surface of the magnetic disk (1). Rad stop area (5)
K is stopped, and before the magnetic disk (1) rotates,
The magnetic head (4) is moved to the information recording area (3) with a small surface roughness and good sliding characteristics.When the movement is finished, the magnetic head (4) is moved to 5 as shown in the same figure (O). The magnetic disk (1) starts rotating, and when the magnetic disk (1) reaches steady rotation, the magnetic head (4) writes and reads information as shown in the figure (to). )
After the operation of K and magnetic disk (1) are completed, as shown in the same figure (E),
) begins to stop, and when the stop is complete, the same figure (F)
As shown in the figure, the magnetic head (4) is located in the magnetic head stop area (5).
), and operation of the magnetic disk device is completed.
なお上記実施例では情報記録領域（３）でＣＳＳを行う
ものを示したが、第２図に示すように表面粗さが小さく
摺動特性の良いＣ８Ｓ領域（６）を別に設け、ここでＣ
８Ｓを行うようにしてもよい。また、上記実施例では磁
気ヘッド停止領域（５）を出猟ディスク（１）の内周に
設けたが、その他の部分、例えば外周に設けてもよく、
上記実施例と同様の効果を奏する。In the above embodiment, CSS is performed in the information recording area (3), but as shown in FIG.
8S may also be performed. Further, in the above embodiment, the magnetic head stopping area (5) is provided on the inner circumference of the hunting disk (1), but it may be provided on other parts, for example, on the outer circumference.
The same effects as in the above embodiment are achieved.
以上のように、この発明によれば、磁気ディスクの非回
転中磁気ヘッドを磁気ヘッド停止領域に停止し、磁気デ
ィスクの回転開始前に情報記録領域あるいはＣ８Ｓ領域
に磁気ヘッドを移動して、この領域でＣ８Ｓを行うよう
にしたので、信頼性の高いものが得られる効果がある。As described above, according to the present invention, the magnetic head is stopped in the magnetic head stop area while the magnetic disk is not rotating, and the magnetic head is moved to the information recording area or the C8S area before the rotation of the magnetic disk starts. Since C8S is performed in the area, there is an effect that highly reliable results can be obtained.
第１図はこの発明の一実施例およびその動作を示す部分
平面図、第２図は他の実施例の部分平面図、第３図は従
来の磁気ディスク装置の部分平面図、第４図は第３図の
ＩＶ−ＩＶ線に沿う平面での断面図である。
（１）・・磁気ディスク、（３）・・情報記録領域、（
４）・・磁気ヘッド、（５）・・磁気ヘッド停止領域、
（６）・・Ｃ８Ｓ領域。
なお、各図中、同一符号は同−又は相当部分を示す。
５ ： ４％へ−ｗド停ｔ４Ｋ＜
６ ： Ｃ５５Ｊｊｊ域FIG. 1 is a partial plan view showing one embodiment of the present invention and its operation, FIG. 2 is a partial plan view of another embodiment, FIG. 3 is a partial plan view of a conventional magnetic disk device, and FIG. 4 is a partial plan view of another embodiment of the present invention. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3; (1)...Magnetic disk, (3)...Information recording area, (
4)...Magnetic head, (5)...Magnetic head stop area,
(6)...C8S area. In each figure, the same reference numerals indicate the same or corresponding parts. 5: To 4% -w stop t4K< 6: C55Jjj area
Claims (3)
ィスク装置において、磁気ディスクの非回転中は前記磁
気ディスクの表面粗さの粗い領域で停止しており前記磁
気ディスクの回転開始前に前記磁気ディスクの表面粗さ
の小さい領域へ移動してこの領域でコンタクトスタート
ストップを行う磁気ヘッドを備えてなることを特徴とす
る磁気ディスク装置。(1) In a magnetic disk drive of the type that performs contact start/stop, when the magnetic disk is not rotating, it is stopped in an area where the surface roughness of the magnetic disk is rough, and before the rotation of the magnetic disk starts, the surface of the magnetic disk A magnetic disk device comprising a magnetic head that moves to an area with small roughness and performs contact start/stop in this area.
許請求の範囲第１項記載の磁気ディスク装置。(2) The magnetic disk device according to claim 1, wherein the area with small surface roughness is an information recording area.
設けたコンタクトスタートストップ領域である特許請求
の範囲第１項記載の磁気ディスク装置。(3) The magnetic disk device according to claim 1, wherein the area with small surface roughness is a contact start/stop area provided separately from the information recording area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7179587A JPS63239618A (en) | 1987-03-27 | 1987-03-27 | Magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7179587A JPS63239618A (en) | 1987-03-27 | 1987-03-27 | Magnetic disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63239618A true JPS63239618A (en) | 1988-10-05 |
Family
ID=13470855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7179587A Pending JPS63239618A (en) | 1987-03-27 | 1987-03-27 | Magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63239618A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02146109A (en) * | 1988-11-28 | 1990-06-05 | Fujitsu Ltd | Disk medium and disk device formed by using this medium |
| JPH0414648A (en) * | 1990-05-08 | 1992-01-20 | Sharp Corp | Magneto-optical disk and production thereof |
| EP0625778A2 (en) * | 1993-05-20 | 1994-11-23 | Corning Incorporated | Disk substrate for magnetic memory devices |
| US6181503B1 (en) | 1996-12-20 | 2001-01-30 | Nec Corporation | Magnetic disk device using a contact start stop system |
| US6927941B1 (en) | 1997-03-28 | 2005-08-09 | Hitachi Global Storage Technologies Netherlands Bv | Disk drive disk with landing zone having textured and untextured regions |
-
1987
- 1987-03-27 JP JP7179587A patent/JPS63239618A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02146109A (en) * | 1988-11-28 | 1990-06-05 | Fujitsu Ltd | Disk medium and disk device formed by using this medium |
| JPH0414648A (en) * | 1990-05-08 | 1992-01-20 | Sharp Corp | Magneto-optical disk and production thereof |
| EP0625778A2 (en) * | 1993-05-20 | 1994-11-23 | Corning Incorporated | Disk substrate for magnetic memory devices |
| EP0625778A3 (en) * | 1993-05-20 | 1994-12-07 | Corning Incorporated | Disk substrate for magnetic memory devices |
| US6181503B1 (en) | 1996-12-20 | 2001-01-30 | Nec Corporation | Magnetic disk device using a contact start stop system |
| US6330124B1 (en) | 1996-12-20 | 2001-12-11 | Nec Corporation | Magnetic disk device using a contact start stop system |
| US6927941B1 (en) | 1997-03-28 | 2005-08-09 | Hitachi Global Storage Technologies Netherlands Bv | Disk drive disk with landing zone having textured and untextured regions |
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