JPS5848227A - Magnetic disk medium - Google Patents
Magnetic disk mediumInfo
- Publication number
- JPS5848227A JPS5848227A JP14476781A JP14476781A JPS5848227A JP S5848227 A JPS5848227 A JP S5848227A JP 14476781 A JP14476781 A JP 14476781A JP 14476781 A JP14476781 A JP 14476781A JP S5848227 A JPS5848227 A JP S5848227A
- Authority
- JP
- Japan
- Prior art keywords
- area
- head
- disk
- magnetic disk
- magnetic
- 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
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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
Landscapes
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は磁気ディスク媒体（以下ｒ４ヌクという）Ｋ関
し、４！ｔｃ’：ｚンタクトスタートストップ方式のデ
ィスクに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk medium (hereinafter referred to as R4Nuku) K, and relates to 4! tc': This relates to a tact start/stop type disc.
磁気ディスク装置のディスク起動方式としてコンタクト
スタートストップ（Ｃ８８）方式が主流となっている。The contact start/stop (C88) method is the mainstream method for starting a magnetic disk device.
このＣ８Ｓ方式はディスク回転の起動、停止管ヘッドが
ディヌク面上Ｋｌ！触した状態で行うものであシ、磁気
ディヌタ媒体紘−−タ管記憶するための記鍮再生領域お
よびヘッドが接触するＣ８Ｓ領域とを有する。このよう
なＣ８Ｓ方式の磁気ディスク装置においては、ディスク
の回転停止時にヘッドがディスク表面上に接触している
ため両者間に介在する空気中の水分あるいは液体潤滑剤
によシヘラドとディスクとが吸着し合ってディスク起動
時にヘッドに無理な力が加わシヘラドが傾斜し、ヘッド
およびディスクに損傷を与えることがある。このような
吸着執象による障害は磁気ディヌクの記憶容量を高める
ためにヘッド浮上量を低下させ、これに伴いヘッド、デ
ィスクの嵌置をよ）鏡面に近づけるにしたがって重大な
問題となる。このような吸着現象を避けゐためにディス
ク表面を単に不必要に粗くすればヘッドの摩耗、劣化と
いう問題を生ずる。In this C8S system, the disk rotation start and stop tube head is on the Dinuk surface! The magnetic recording medium has a playback area for recording and a C8S area in contact with the head. In such a C8S type magnetic disk drive, since the head is in contact with the disk surface when the disk stops rotating, the disk and the disk are attracted to each other by moisture in the air or liquid lubricant between them. If this occurs, excessive force is applied to the head when the disk is started, causing the shield to tilt, which may cause damage to the head and disk. Problems caused by such attraction become more serious as the flying height of the head is lowered in order to increase the storage capacity of the magnetic disk, and as the head and disk are mounted closer to a mirror surface. If the surface of the disk is simply made unnecessarily rough in order to avoid such adhesion, problems such as wear and deterioration of the head will occur.
本発明状上記の点に鑑みなされたものであって、ヘッド
の摩耗、劣化を来すことなく吸着現象管防止し高信頼性
でかつ記憶容量の大きい磁気ディスク媒体の提供金目的
とする。このため本実ｔｌ１４に係る磁気ディスク媒体
Ｋｓ？いてはＣ８８領域表面がヘッドの吸着防止用微小
突起を有する仁とによ〕前記記録再生領域表面よシ粗（
形成されている。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a magnetic disk medium which is highly reliable and has a large storage capacity, preventing the phenomenon of adsorption without causing wear or deterioration of the head. Therefore, the magnetic disk medium Ks? related to the real tl14? In this case, the surface of the C88 area is rougher than the surface of the recording/reproducing area due to the grooves having micro protrusions to prevent the head from adsorbing.
It is formed.
以下、図ｍＫ基いて本発明をさらに詳しく説明する。The present invention will be explained in more detail below with reference to Figure mK.
磁気ディスク表面の磁性膜を形成する場合、アル電す等
の硬い微粒子を含む塗膜強化剤が用いられる。このよう
な微粒子がディスク嵌置に微小突起管形成する。この微
小突起社ヘラドＯ浮上量に応じてヘッドのシークに支障
ない高さまで研磨され取除かれる。この微小突起の高さ
ｔＡ：α１μｍ以下、Ｂ：α２ＪｌｓｓｅＣ：ａ３５Ｊ
ｔｍ、Ｄ：Ｑ、６μｓをした場合のヘッドとディス゛り
間の吸着力とディスク上の液体潤滑剤の量および相対湿
度との関係を第１図および第２図に示す、第１図から分
ゐように吸着Ｏ立上りは突起高さが高い程潤滑剤量の多
い側に移行している。また、第２図から分るように突起
高さが高い程高湿度下でも吸着が起）にくい０以上の実
験によ・シ微小突起の高さが高い程吸着現象が起夛にく
くまた微小突起の高さがα１μ輌以上であれば吸着を防
止し得ることが分る。When forming a magnetic film on the surface of a magnetic disk, a film strengthening agent containing hard fine particles such as Aldensu is used. Such fine particles form microtubules in the disc-fitting area. These minute protrusions are polished and removed according to the flying height of the Helad O to a height that does not interfere with the seek of the head. The height of this microprotrusion tA: α1μm or less, B: α2JlsseC: a35J
Figures 1 and 2 show the relationship between the adsorption force between the head and the disk, the amount of liquid lubricant on the disk, and the relative humidity when tm, D: Q, 6 μs. As shown in the figure, the rise of adsorption O shifts to the side where the amount of lubricant is larger as the protrusion height is higher. In addition, as can be seen from Figure 2, the higher the height of the microprotrusions, the more difficult it is for adsorption to occur even under high humidity. It can be seen that adsorption can be prevented if the height is α1μ or more.
一方、磁気ヘッドの摩耗、劣化についてみれば、塵埃が
混入したともあるいは高速回転時に浮上量よシも高−突
起に衝突したシシーク１暴走時にヘラＹ姿勢が乱れて突
起に衝突したときにヘッドの摩耗、劣化が促進され、Ｃ
８Ｓ時において畔ヘッド浮上量よＦ）％低い突起によっ
て、は摩耗、劣化は生じない。On the other hand, if we look at the wear and deterioration of the magnetic head, it can be caused by the intrusion of dust or the high flying height during high-speed rotation. Wear and deterioration are accelerated, and C
At 8S, no wear or deterioration occurs due to the protrusion which is F)% lower than the flying height of the ridge head.
以上の点を考慮すれば、ヘッドの摩耗、劣化を防止しか
つＣ８Ｓ時の吸着現象な防止するためＫは：ＣＳＳ領域
Ｋｔｉ−ヘッドヘラ量より低（かりα１μ密以上の微小
突起を存在させ；記録再生領域には微小突起分布状態く
すればよいという結論が得られる。Taking the above points into consideration, in order to prevent wear and deterioration of the head as well as the adsorption phenomenon during C8S, K is: CSS area Kti - lower than the head spatula amount (kari α 1μ or more fine protrusions are present; recording The conclusion is that it is sufficient to have a good distribution of microprotrusions in the regeneration area.
このように、０８８領域の微小突起は研磨せずにヘッド
浮上量よシ低（かつα１μ輌以上の高さの微小突起を残
してお（ことによｒｃｓｓ領域の表ｗｉを、適当な粗さ
としエヘラドの摩耗、劣化を来すことなく吸着現象を防
止できる。ｔた、記録再生領域表面の微小突起１＊除く
ことによ〕低浮上量のヘッドを用いることがで自記憶密
度を高めることができる。また、Ｃ８Ｓ領域に微小突起
が存在する仁とＫよりヘッドが塵埃等で汚れたときＣ８
Ｓ時にこの微小突起によ）汚れが取除かれるという効果
も奏する。In this way, the fine protrusions in the 088 area are not polished, but the fine protrusions with a height lower than the head flying height (and α1μ or more) are left (particularly, the surface wi of the rcss area is made to have an appropriate roughness). The adhesion phenomenon can be prevented without causing wear or deterioration of the eherad.Also, by removing the minute protrusions 1* on the surface of the recording/reproducing area, it is possible to increase the self-memory density by using a head with a low flying height. In addition, when the head is dirty with dust etc. from the nickel and K where micro protrusions are present in the C8S area, the C8
This microprotrusion also has the effect of removing dirt (at the time of S).
Ｃ８Ｓ領域の微小突起を残し、記録再生領域の微小突起
１＊除する方法上第３図に基いて説明する。磁性層ｌを
アル電基体２上に設けた磁気ディスタ３ｔ−回転させる
。ランｆａ−ドヘッド６のスフイ〆−６の下面に砥粒層
４を設ける。このツンゾロードヘッド５はディスク面上
の記録再生領域Ｑで拡ディスク面に接触して摺動し、Ｃ
ＳＳ領域領域へディスタ面から離れてアン璽−ドするよ
うに駆動制御される。このような操作により記録再生領
域Ｑ４Ｄ費−からは微小突起が取除かれ、ＣＳＳ領域ｐ
ｏｐ面には微小突起７が残ゐ、従って、第４図に示すよ
うに、ＣＳＳ領域領域へ１μ輌以上の微小突起を有し記
録再生領域Ｑよ〕％表面が粗く形成されることになる。A method of leaving the minute protrusions in the C8S area and removing the minute protrusions 1* in the recording/reproducing area will be explained based on FIG. 3. The magnetic layer 1 is rotated through the magnetic disc 3t provided on the aluminum base 2. An abrasive grain layer 4 is provided on the lower surface of the fiber finish 6 of the run fading head 6. This Tsunzo road head 5 slides in contact with the enlarged disk surface in the recording/reproducing area Q on the disk surface, and
The drive is controlled to unseal away from the disk surface to the SS area. Through such operations, minute protrusions are removed from the recording/playback area Q4D, and the CSS area p
The microprotrusions 7 remain on the OP surface, and therefore, as shown in FIG. 4, the CSS area has microprotrusions of 1 μm or more, and the recording/reproducing area Q has a rough surface. .
なお、微小突起を取除く方法紘砥粒層をスライダーに設
けたヘッドを用いる方法に限らず、通常のア＃ミナ等の
硬い材料からなるパーニツシ轟ヘッドでもよいし、ある
いはスライダー下面に凹凸を形成し九特殊加工ヘッドを
用いてもよい。このよう表ヘッドを記録再生領域にロー
ドさせ、Ｃ８Ｓ領域にアン■−ドさせるためＫはランフ
”ａ−ドヘラドのランフ”ｗ−ド機構を用いてもよいし
あるいはヘッドに磁石を取付けて所定位置で磁気的にロ
ード、アレ曹−ドするように制御して％よい。Note that the method for removing minute protrusions is not limited to the method of using a head with a layer of abrasive grains on the slider, but it is also possible to use a grinding head made of a hard material such as ordinary aluminium, or by forming unevenness on the bottom surface of the slider. A special processing head may also be used. In order to load the front head into the recording/reproducing area and unload it into the C8S area, K may use a ramp "a-drive" mechanism, or a magnet may be attached to the head to position it in a predetermined position. It can be controlled to magnetically load and load the area.
第１図紘ヘラド吸着力と液体潤滑剤量との関係を示すグ
ツ７、纂２図はヘッド吸着力と相対湿度との関係を示す
グラフ・、第３図はディスク面の微小突起１＊除く方法
を示すための磁気ディスクの断面図、第４図線本発明に
係る磁気ディスク表面の微小突起分布状態を示すグラフ
である。
１・−・磁性膜、２・−アル建基体、３・・・磁気ディ
スク、４−・・砥粒層、５−ラングセードヘッド、６・
・・スライ〆、７・・・微小突起、Ｐ・−ＣＳＳ領域、
Ｑ・・・記録再生領域。Fig. 1 shows the relationship between the head adsorption force and the amount of liquid lubricant. Fig. 2 shows the relationship between the head adsorption force and relative humidity. Fig. 3 shows the relationship between the head adsorption force and the relative humidity. Fig. 3 excludes the micro protrusion 1* on the disk surface. FIG. 4 is a cross-sectional view of a magnetic disk for illustrating the method; FIG. DESCRIPTION OF SYMBOLS 1--Magnetic film, 2--Al base, 3--Magnetic disk, 4--Abrasive layer, 5--Langsade head, 6--
... Sliding, 7... Microprotrusion, P・-CSS region,
Q: Recording and playback area.
Claims (1)
ッドのコンタクトスタートストップ領域を有する磁気デ
ィスク媒体におｉて、上記コ・ンタクトスタートストッ
プ領域表面がヘッドの吸着防止用微小突起を有するとと
Ｋよ〕上記記録再生領域表面より粗（形成された仁とＹ
ｒ４１黴とする磁気ディスクの媒体。1. In a magnetic disk medium having a magnetic recording reproduction area for data and a contact start/stop area for a head on the disk surface, the surface of the contact start/stop area has microprotrusions for preventing adsorption of the head. ] Rougher than the surface of the recording/reproducing area (formed nicks and Y)
Magnetic disk media with r41 mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14476781A JPS5848227A (en) | 1981-09-16 | 1981-09-16 | Magnetic disk medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14476781A JPS5848227A (en) | 1981-09-16 | 1981-09-16 | Magnetic disk medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5848227A true JPS5848227A (en) | 1983-03-22 |
Family
ID=15369932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14476781A Pending JPS5848227A (en) | 1981-09-16 | 1981-09-16 | Magnetic disk medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5848227A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6476528A (en) * | 1987-09-18 | 1989-03-22 | Toshiba Corp | Magnetic recording medium |
| JPH0844303A (en) * | 1994-07-28 | 1996-02-16 | Seikosha Co Ltd | Magnetic inversion display device |
| US6118632A (en) * | 1997-02-12 | 2000-09-12 | International Business Machines Corporation | Magnetic disk stack having laser-bump identifiers on magnetic disks |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276005A (en) * | 1975-12-22 | 1977-06-25 | Fujitsu Ltd | Base plate of magnetic disk |
| JPS5423508A (en) * | 1977-07-25 | 1979-02-22 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic disc medium |
-
1981
- 1981-09-16 JP JP14476781A patent/JPS5848227A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276005A (en) * | 1975-12-22 | 1977-06-25 | Fujitsu Ltd | Base plate of magnetic disk |
| JPS5423508A (en) * | 1977-07-25 | 1979-02-22 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic disc medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6476528A (en) * | 1987-09-18 | 1989-03-22 | Toshiba Corp | Magnetic recording medium |
| JPH0844303A (en) * | 1994-07-28 | 1996-02-16 | Seikosha Co Ltd | Magnetic inversion display device |
| US6118632A (en) * | 1997-02-12 | 2000-09-12 | International Business Machines Corporation | Magnetic disk stack having laser-bump identifiers on magnetic disks |
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