JPH0562148A - Continuous thin-film type magnetic disk medium - Google Patents

Continuous thin-film type magnetic disk medium

Info

Publication number
JPH0562148A
JPH0562148A JP22201991A JP22201991A JPH0562148A JP H0562148 A JPH0562148 A JP H0562148A JP 22201991 A JP22201991 A JP 22201991A JP 22201991 A JP22201991 A JP 22201991A JP H0562148 A JPH0562148 A JP H0562148A
Authority
JP
Japan
Prior art keywords
magnetic disk
film
lubricant
magnetic
data zone
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
Application number
JP22201991A
Other languages
Japanese (ja)
Inventor
Toshinori Kazama
利紀 風間
Yoshihiko Miyake
芳彦 三宅
Kazuhisa Murakami
和久 村上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP22201991A priority Critical patent/JPH0562148A/en
Publication of JPH0562148A publication Critical patent/JPH0562148A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a continuous thin-film type magnetic disk medium with a high reliability by lubricating a surface of a data zone over a long period of time. CONSTITUTION:A concentric groove 15 is formed at a protection film of a non-data zone 8 of a magnetic disk and further a radial groove 14 is formed at a protection film of a data zone 7, thus enabling a lubricant which stays at the groove 15 to be supplied to the data zone 7 through the groove 14 and the data zone to be lubricated over a long period of time.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は連続薄膜型磁気ディスク
媒体に関するものであり、特に高密度用磁気記録装置に
搭載され、連続薄膜型磁気ディスク媒体の表面に塗布さ
れる潤滑剤を長期間保持するのに好適な連続薄膜型磁気
ディスク媒体に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous thin film type magnetic disk medium, and in particular, it is mounted on a high density magnetic recording device and holds a lubricant applied to the surface of the continuous thin film type magnetic disk medium for a long period of time. The present invention relates to a continuous thin film magnetic disk medium suitable for

【0002】[0002]

【従来の技術】コンピュ−タシステムにおける外部磁気
記録装置の記憶容量は年々その大きさを増しており、磁
気ディスク媒体は高密度化が図られ、磁気ヘッドと磁気
ディスク媒体の浮上すきまの狭小化、即ち低浮上化が図
られている。近年では、このような高密度化に対応する
磁気ディスク媒体として、従来の塗布型磁気ディスク媒
体に替わり、表面平滑性及び電磁気特性が優れている連
続薄膜型ディスクが注目されている。
2. Description of the Related Art The storage capacity of an external magnetic recording device in a computer system has been increasing year by year, and the density of magnetic disk media has been increased, and the floating clearance between the magnetic head and the magnetic disk media has been reduced. That is, low levitation is achieved. In recent years, a continuous thin film type disk, which has excellent surface smoothness and electromagnetic characteristics, has been attracting attention as a magnetic disk medium compatible with such a high density, instead of a conventional coating type magnetic disk medium.

【0003】従来の塗布型ディスク媒体は、高分子樹脂
(バインダ)に強磁性粉と機械強度確保の為の非磁性粒
子を混練し、得られた磁性塗料を基板面に塗布し、熱硬
化により磁性層を形成し、その表面に潤滑剤を塗布して
いる。しかし、高密度化の要求に対して、磁性粉の含率
を高める必要があり、電磁気特性向上のため非磁性粒子
の充填量を下げなければならず、機械強度の低下と電磁
気特性の向上は相反するという技術課題がある。このた
め、塗布型磁気ディスク媒体では、上記磁性塗料に更に
ポリエ−テル系の分散剤を添加して、熱硬化時に面内に
ミクロポアを形成し、磁性層表面に潤滑剤を塗布してい
る。このミクロポアは、潤滑剤を滞留せしめ、ディスク
起動および定常回転時に常時磁性層を潤滑化させるため
のものであり、前述の技術課題である機械強度を確保し
ている。このため、ディスク表面の総潤滑剤量は連続薄
膜型ディスクに比べ4〜8倍程度の多量塗布が可能とな
り、高い信頼性の一要因となっている。
In a conventional coating type disk medium, a polymer resin (binder) is kneaded with ferromagnetic powder and non-magnetic particles for securing mechanical strength, the obtained magnetic coating material is coated on the surface of the substrate, and heat-cured. A magnetic layer is formed and a lubricant is applied to the surface thereof. However, in order to meet the demand for higher density, it is necessary to increase the content of magnetic powder, and to reduce the filling amount of non-magnetic particles in order to improve electromagnetic characteristics, it is not possible to reduce mechanical strength and improve electromagnetic characteristics. There is a technical problem of conflict. For this reason, in the coating type magnetic disk medium, a polyether type dispersant is further added to the above magnetic coating material to form in-plane micropores at the time of thermosetting and a lubricant is applied to the surface of the magnetic layer. The micropores are used to retain the lubricant so that the magnetic layer is constantly lubricated at the time of starting the disk and at the time of steady rotation, and secures the mechanical strength, which is the technical problem described above. Therefore, the total amount of lubricant on the surface of the disk can be applied in an amount of about 4 to 8 times as large as that of the continuous thin film type disk, which is one of the factors for high reliability.

【0004】これに対して、連続薄膜型ディスク媒体
は、基板及び下地膜に順次、中間膜、磁性膜、保護膜等
の連続薄膜をスパッタリングにより形成して、多層膜構
造とし、保護膜上に潤滑剤を塗布している。また、表面
は非常に緻密になっており、ヘッド/ディスク接触型の
磁気記録装置では信頼性低下を招く起動停止時における
接線力の増大を考慮して、潤滑膜の薄膜塗布を余儀なく
されている。このため、保護膜と適合性の良いエステル
基等吸着末端基を持つ潤滑剤を塗布して、保護膜に強固
付着させ、機械強度確を確保している。しかし、定常回
転時におけるヘッド/ディスクの接触による潤滑剤の減
少および回転熱飛散による潤滑剤の経時減少に対し、常
時保護層表面を潤滑化させる機構がなく、磁気記録装置
の信頼性の不安定要因となっていた。
On the other hand, in the continuous thin film type disk medium, a continuous thin film such as an intermediate film, a magnetic film, and a protective film is sequentially formed on a substrate and a base film by sputtering to form a multilayer film structure, and a continuous film is formed on the protective film. Applying lubricant. In addition, the surface is extremely dense, and in a head / disk contact type magnetic recording device, a thin film of a lubricating film is inevitably applied in consideration of an increase in tangential force at the time of start / stop that causes a decrease in reliability. .. For this reason, a lubricant having an adsorption end group such as an ester group, which has a good compatibility with the protective film, is applied and firmly adhered to the protective film to ensure the mechanical strength. However, there is no mechanism for constantly lubricating the surface of the protective layer against the decrease in lubricant due to head / disk contact during steady rotation and the decrease in lubricant due to rotational heat scattering, and the reliability of the magnetic recording device is unstable. It was a factor.

【0005】なお、本発明に関連するものとしては、特
開昭60−191432号公報に開示された発明が存在
する。
The invention disclosed in Japanese Patent Application Laid-Open No. 60-191432 is related to the present invention.

【0006】[0006]

【発明が解決しようとする課題】一般的にディスク表面
に塗布されている潤滑剤は、ディスクの回転起動時及び
定常回転動作により、ヘッド/ディスクの接触や回転熱
飛散により経時的に減少または枯渇することが知られて
いる。この現象においては、潤滑剤が周速度の遅い内周
域から速い外周域に対して流動しやすく、特に潤滑剤が
減少し磁気ヘッドの浮上量が低下する内周域ではディス
ク表面との接触頻度が増加し、ヘッドクラッシュの危険
性が増加する問題点がある。
Generally, the lubricant applied to the surface of the disk decreases or depletes over time due to head / disk contact and rotational heat dissipation due to disk rotation start and steady rotation operation. Is known to do. In this phenomenon, the lubricant is apt to flow from the inner peripheral area where the peripheral speed is low to the outer peripheral area where the peripheral speed is fast, and in particular, the contact frequency with the disk surface in the inner peripheral area where the lubricant decreases and the flying height of the magnetic head decreases. And the risk of head crash increases.

【0007】従来技術では、特開昭60−191432
号公報に開示されているように、基板上に例えば同心円
状、スパイラル状、矩形状等の溝を形成し、潤滑剤を滞
留せしめ、装置の起動/停止動作に左右されずに、常時
記録層の全面にわたり潤滑剤の均化を図るものがある。
しかし、上記従来技術では、同一面内に同型状の溝を全
面に形成しており、内周域における潤滑剤の経時減少ま
たは枯渇については孝慮されていない。さらに、コンタ
クト スタート ストップ(以下,CSSと呼称する)
ゾーンの溝形状により、回転起動時にヘッドを浮上させ
る空気粘性流が抑制されて浮上開始速度が遅くなる点、
および溝形成によって得られる丘にかかる接触面圧の影
響については、特に配慮されていない。
In the prior art, Japanese Patent Laid-Open No. Sho 60-191432
As disclosed in the publication, for example, concentric, spiral, or rectangular grooves are formed on a substrate to retain a lubricant, and the recording layer is constantly operated without being affected by the start / stop operation of the apparatus. There is a method for leveling the lubricant over the entire surface.
However, in the above-mentioned conventional technique, the same type of groove is formed on the entire surface in the same plane, and the reduction or depletion of the lubricant with time in the inner peripheral region is not considered. In addition, contact start / stop (hereinafter referred to as CSS)
Due to the groove shape of the zone, the viscous air flow that floats the head at the time of rotation start is suppressed and the flying start speed becomes slower,
No particular consideration is given to the influence of the contact surface pressure on the hill obtained by forming the groove.

【0008】本発明は上記問題点を解決するためになさ
れたものであって、デイスク起動時及び定常回転時に保
護層デ−タゾ−ンの表面潤滑化を長期にわたって図り、
CSSゾ−ンの膜耐力を確保し、信頼性の高い連続薄膜
型磁気ディスク媒体を提供することを目的としている。
The present invention has been made to solve the above-mentioned problems, and it is intended to lubricate the surface of the protective layer data zone for a long period of time at the time of starting the disk and at the time of steady rotation.
It is an object of the present invention to provide a continuous thin film type magnetic disk medium having high reliability and ensuring the film proof strength of the CSS zone.

【0009】[0009]

【課題を解決するための手段】本発明の連続薄膜型磁気
ディスク媒体は、基板上に順次、下地膜、磁性膜、保護
膜、潤滑膜を形成してなるものであり、特に磁気ディス
ク媒体の非データゾーンの保護膜に周期的かつ規則的に
微小凹部を形成して潤滑剤を塗布し、かつ少なくとも磁
気ディスクのデータゾーンに周期的かつ規則的に凹部を
形成して潤滑剤を塗布することを特徴としている。
A continuous thin film type magnetic disk medium of the present invention comprises a substrate, on which a base film, a magnetic film, a protective film and a lubricating film are sequentially formed. Applying a lubricant by periodically and regularly forming minute recesses on the protective film in the non-data zone, and applying a lubricant by periodically and regularly forming recesses in at least the data zone of the magnetic disk. Is characterized by.

【0010】[0010]

【作用】本発明によれば、保護層の内周側である非デ−
タゾ−ンに形成された溝に潤滑剤が滞留する。さらに、
非データゾーンに形成された溝に滞留する潤滑剤は、少
なくともデータゾーンに形成された溝に供給され、その
結果、磁気ディスクのデ−タゾ−ン全域を長期にわたり
潤滑化させる作用を持つ。
According to the present invention, the non-deposited inner surface of the protective layer is
The lubricant stays in the grooves formed in the taxon. further,
The lubricant staying in the groove formed in the non-data zone is supplied to at least the groove formed in the data zone, and as a result, it has the effect of lubricating the entire data zone of the magnetic disk for a long period of time.

【0011】[0011]

【実施例】以下添付の図面に示す実施例により、さらに
詳細に本発明について説明する。図2は一般的な接触型
の磁気記録装置の断面概略図であり、磁気ディスク1と
磁気ディスク1の回転制御機構2と磁気ヘッド3と磁気
ヘッド3の位置決め機構4と軽荷重スプリング5を主た
る構成要素としている。図1は、磁気ディスク1の回転
停止時を示し、直接対向する磁気ヘッド3が軽荷重スプ
リング5の力で押し付けられ、双方が常時接触している
コンタクト・ストップ状態を示している。この状態か
ら、CSS時は磁気ヘッド3と磁気ディスク1は互いに
表面上を摺動しながら所定の浮上すきまを確保してい
る。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. FIG. 2 is a schematic cross-sectional view of a general contact type magnetic recording apparatus, which mainly includes a magnetic disk 1, a rotation control mechanism 2 for the magnetic disk 1, a magnetic head 3, a positioning mechanism 4 for the magnetic head 3, and a light load spring 5. It is a component. FIG. 1 shows a state in which the rotation of the magnetic disk 1 is stopped, and shows a contact stop state in which the directly opposed magnetic head 3 is pressed by the force of the light load spring 5 and both are constantly in contact with each other. From this state, during CSS, the magnetic head 3 and the magnetic disk 1 slide on the surfaces of each other to ensure a predetermined floating clearance.

【0012】図1は本実施例の磁気ディスク正面図であ
り、図3は磁気ディスク回転時におけるヘッド浮上状態
を示す断面図であり、図4は磁気ディスク断面模式図で
ある。図示するように、非デ−タゾ−ン8である最内周
の保護膜10には、潤滑剤を滞留せしめる溝15が同心
円状に形成されている。また、デ−タゾ−ン7の保護膜
10には、円周方向に周期的な溝14が放射状に配列さ
れている。また、CSSゾ−ン6には溝が形成されてお
らず、従来と同様の表面粗さを有する平滑面が形成され
ている。ここで、図中、9は潤滑膜、11は磁性膜、1
2は中間膜、13は下地膜を示している。
FIG. 1 is a front view of a magnetic disk of this embodiment, FIG. 3 is a sectional view showing a head flying state when the magnetic disk is rotated, and FIG. 4 is a schematic sectional view of the magnetic disk. As shown in the drawing, the innermost protective film 10 which is the non-data zone 8 is formed with concentric grooves 15 for retaining the lubricant. Further, in the protective film 10 of the data zone 7, grooves 14 which are periodic in the circumferential direction are radially arranged. No groove is formed on the CSS zone 6, and a smooth surface having the same surface roughness as the conventional one is formed. Here, in the figure, 9 is a lubricating film, 11 is a magnetic film, and 1
Reference numeral 2 is an intermediate film, and 13 is a base film.

【0013】このように各部位によって異なる表面形状
を有する保護層の表面に塗布される潤滑剤は、デ−タゾ
−ン7及びCSSゾ−ン6においては通常の末端基を有
する例えばアルコキシラン型の潤滑剤であり、これが強
固付着する。次に、デ−タゾ−ン7及びCSSゾ−ン6
をマスキングし、非デ−タゾ−ン8に設けられた内周域
の同心円状の溝15に流動性の高い非末端基の潤滑剤を
滞留させる。溝15に滞留する潤滑剤は、ディスク回転
時において、前述の放射状の溝14を通じて磁気ディス
ク1のデ−タゾ−ン7の全域を潤滑化させる。この潤滑
化は、長期にわたって可能である。また、非デ−タゾ−
ン8である内周域において、潤滑剤が多量に滞留してい
る。このため、該滞留している潤滑剤の単分子膜の流動
により、デ−タゾ−ン7の内周側の潤滑剤の減少及び潤
滑剤の枯渇現象を防止することができる。
As described above, the lubricant applied to the surface of the protective layer having a different surface shape depending on each part has, for example, an alkoxysilane type having a normal end group in the data zone 7 and the CSS zone 6. It is a lubricant of and adheres firmly. Next, data zone 7 and CSS zone 6
Is masked, and the non-terminal group lubricant having high fluidity is retained in the concentric groove 15 in the inner peripheral region provided in the non-data zone 8. The lubricant staying in the grooves 15 lubricates the entire area of the data zone 7 of the magnetic disk 1 through the radial grooves 14 when the disk rotates. This lubrication is possible for a long time. In addition, non-data
A large amount of lubricant is retained in the inner peripheral region of the engine 8. Therefore, it is possible to prevent the lubricant on the inner peripheral side of the data zone 7 from decreasing and the lubricant depleting phenomenon due to the flow of the retained lubricant monomolecular film.

【0014】以上に述べたディスク保護層表面の溝1
4,15を形成する具体的な製造方法としては、以下の
ようなものが考えられる。
The groove 1 on the surface of the disk protective layer described above.
The following may be considered as a specific manufacturing method for forming 4,15.

【0015】(イ)鏡面加工された非磁性ディスク上
に、順次磁性膜、保護層を形成し(非磁性ディスクと磁
性膜の間に中間膜例えばクロム膜を形成する場合もあ
る。)、その保護層上にリソグラフィ−技術により所望
のマスクパタ−ンを形成する。その後、エッチングを行
ない、マスクパタ−ンで覆われなかった部分のみを選択
的な均一エッチングにより保護層の膜厚以下で一定の深
さまで除去する。
(A) A magnetic film and a protective layer are sequentially formed on a mirror-finished non-magnetic disk (an intermediate film such as a chromium film may be formed between the non-magnetic disk and the magnetic film), and the resulting film is formed. A desired mask pattern is formed on the protective layer by a lithographic technique. After that, etching is performed, and only a portion not covered with the mask pattern is removed by selective uniform etching to a certain depth below the film thickness of the protective layer.

【0016】(ロ)レ−ザ/光/荷電粒子のビ−ムの照
射により、硬化可能な物質を膜上に形成し、所望の位置
に規則的に照射し部分的に硬化させる。その後未硬化部
を除去し、溝を形成する。
(B) A curable substance is formed on the film by irradiation with a beam of laser / light / charged particles, and a desired position is regularly irradiated and partially cured. Then, the uncured portion is removed to form a groove.

【0017】(ハ)光分解性の有機金属ガスを導入して
レ−ザビ−ムをディスク状に周期的に照射したレ−ザ法
による製造方法。
(C) A manufacturing method by a laser method in which a photodegradable organometallic gas is introduced and a laser beam is periodically irradiated in a disk shape.

【0018】本実施例では、形成された溝形状をSTM
(走査型トンネル顕微鏡)及び触針式面粗さ計により測
定した結果、前述(イ)のマスクパタ−ンによる溝部の
形成方法が最も精度が優れ有効であると思われる。
In this embodiment, the formed groove shape is STM.
As a result of measurement using a (scanning tunneling microscope) and a stylus type surface roughness meter, it is considered that the method of forming the groove portion by the mask pattern of the above (a) is most accurate and effective.

【0019】また、本実施例における潤滑剤の滞留用の
溝及び放射状の溝の幅は1μm以上(例えば、数μm程
度)、深さはデ−タゾ−ンの潤滑膜厚と同等程度(例え
ば、10nm程度)にし、滞留せしめる潤滑剤の量は上
限でデ−タゾ−ンの潤滑膜厚の倍程度(例えば、10〜
20nm程度)にするのが効果的である。
Further, in this embodiment, the width of the groove for retaining the lubricant and the radial groove is 1 μm or more (for example, about several μm), and the depth is approximately the same as the lubricating film thickness of the data zone (for example, for example). 10 nm), and the amount of the retained lubricant is about the upper limit of about twice the lubricating film thickness of the data zone (for example, 10 to 10 nm).
20 nm) is effective.

【0020】さらに放射状の溝は、円周方向に複数本必
要であり、電磁気特性の許すかぎり多いほうが好まし
い。
Furthermore, a plurality of radial grooves are required in the circumferential direction, and it is preferable that there are as many radial grooves as the electromagnetic characteristics allow.

【0021】図5は、溝のある磁気ディスクと従来の平
滑面を有する磁気ディスクとの浮上開始速度調査した例
である。磁気ディスクの溝の深さは10nm、溝幅は
2.5μmピッチであり、磁気ヘッドは円筒面のクラウ
ニング高さを50nmとし、従来の平滑面を有する磁気
ディスクにおいて周速20m/sにて浮上量が0.2μ
mのものを用いた。
FIG. 5 shows an example of investigation of the levitation start speed of a magnetic disk having a groove and a conventional magnetic disk having a smooth surface. The groove depth of the magnetic disk is 10 nm, the groove width is 2.5 μm pitch, the crowning height of the magnetic head is 50 nm, and the magnetic head flies at a peripheral speed of 20 m / s in a conventional magnetic disk having a smooth surface. 0.2μ
m was used.

【0022】本調査結果によれば、ヘッド浮上開始速度
は、溝のある磁気ディスクの方が平滑面を有する従来の
磁気ディスクと比べて1〜2m/sだけ低下し、磁気ヘ
ッドと磁気デイスクとの接触摺動時間が長いことがわか
る。
According to the results of this investigation, the head flying start speed is reduced by 1 to 2 m / s in the magnetic disk having the groove as compared with the conventional magnetic disk having the smooth surface, and the magnetic head and the magnetic disk are separated from each other. It can be seen that the contact sliding time is long.

【0023】さらに、本動作を繰り返すことにより、従
来の平滑面を有する磁気ディスクよりもCSS耐力が低
下することが判明している。この理由としては、前述の
浮上開始速度が低下する事、および溝形成により磁気ヘ
ッドと磁気ディスクの接触面積が減少し、接触摺動時の
ディスクの面圧が高くなることが挙げられる。したがっ
て、CSSゾーンには、溝を設けないか、または溝の数
をデータゾーンと比べて少なくすることが効果的であ
る。
Further, it has been found that by repeating this operation, the CSS proof strength becomes lower than that of the conventional magnetic disk having a smooth surface. The reason for this is that the above-mentioned flying start speed decreases, and the contact area between the magnetic head and the magnetic disk decreases due to the groove formation, and the surface pressure of the disk during contact sliding increases. Therefore, it is effective to provide no grooves in the CSS zone or to reduce the number of grooves as compared with the data zone.

【0024】図1乃至図4に示す実施例においては、C
SSゾ−ンには溝14を形成しなかったため、CSSゾ
ーンは平滑な表面形状を有しており、このためヘッドの
浮上開始速度を高くすることがない。さらに、磁気ヘッ
ドとの接触面積が減少しないので面圧が分散され、CS
S耐力が確保される作用を持つ。また、上記実施例にお
いては、磁気ヘッドは円筒面のクラウニング形状を有す
るため、吸着等の危険性が低く、ディスク全面にわたり
摺動信頼性の高い高密度用磁気ディスクが得られる。
In the embodiment shown in FIGS. 1 to 4, C
Since the groove 14 is not formed in the SS zone, the CSS zone has a smooth surface shape, and therefore the flying start speed of the head is not increased. Further, since the contact area with the magnetic head does not decrease, the surface pressure is dispersed,
It has the effect of ensuring S proof stress. Further, in the above-mentioned embodiment, since the magnetic head has the crowning shape of the cylindrical surface, a high density magnetic disk having a low risk of attraction and the like and having high sliding reliability over the entire disk surface can be obtained.

【0025】以上の実施例においては、データゾーンに
放射状の溝を形成したが、本発明はこれに限定されるも
のではなく、例えばディスクの回転方向に傾斜した斜め
の溝をディスク上に形成しても良く、溝の形状としては
種々のものが考えられる。
Although radial grooves are formed in the data zone in the above embodiments, the present invention is not limited to this, and for example, oblique grooves inclined in the rotational direction of the disk are formed on the disk. However, various shapes of the groove can be considered.

【0026】また、上記実施例においては、CSSゾー
ンには溝を形成しなかったが、本発明はこれに限定され
るものではなく、例えばデータゾーンに形成された溝の
うち、複数本に1本をCSSゾーンまで延長し、CSS
ゾーンにデータゾーンよりも少ない本数の溝を形成して
も良い。これにより、CSSゾ−ンの膜耐力を確保しつ
つ、CSSゾーンの長期間にわたる潤滑化を図ることが
できる。
Further, in the above embodiment, no groove was formed in the CSS zone, but the present invention is not limited to this, and for example, one out of a plurality of grooves formed in the data zone. Extend the book to the CSS zone
It is possible to form a smaller number of grooves in the zone than in the data zone. As a result, it is possible to achieve lubrication of the CSS zone for a long period while ensuring the film proof strength of the CSS zone.

【0027】また、上記実施例においては、溝を磁気デ
ィスクの保護膜に形成したが、本発明はこれに限定され
るものではなく、例えば下地膜に形成しても良い。
Further, in the above embodiment, the groove is formed in the protective film of the magnetic disk, but the present invention is not limited to this, and may be formed in the base film, for example.

【0028】[0028]

【発明の効果】本発明は保護層表面の非デ−タゾ−ン、
デ−タゾ−ン及びCSSゾ−ンにそれぞれ形状の異なっ
た周期的、且つ規則的に配列した溝部の部位を円周方向
と半径方向に形成し潤滑剤を塗布することにより以下の
効果がある。
INDUSTRIAL APPLICABILITY The present invention provides a non-datazone on the surface of the protective layer,
The following effects can be obtained by forming grooves in the data zone and the CSS zone, which are periodically and regularly arranged and have different shapes in the circumferential direction and the radial direction, and apply the lubricant. .

【0029】ディスクの回転起動時及び定常回転時にお
いて経時的に減少、枯渇する潤滑剤を常時保護層デ−タ
ゾ−ン表面に供給する潤滑効果を有する。
It has a lubricating effect to constantly supply the protective layer data zone surface with a lubricant that decreases and depletes with time at the time of starting the rotation of the disk and at the time of normal rotation.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の連続薄膜型磁気ディスクの一実施例を
示す正面図。
FIG. 1 is a front view showing an embodiment of a continuous thin film magnetic disk of the present invention.

【図2】本発明の連続薄膜型磁気ディスク媒体が搭載さ
れた磁気記録装置の断面概略図。
FIG. 2 is a schematic cross-sectional view of a magnetic recording device equipped with a continuous thin film magnetic disk medium of the present invention.

【図3】本発明の連続薄膜型磁気ディスクの一実施例を
示す断面図。
FIG. 3 is a sectional view showing an embodiment of a continuous thin film magnetic disk of the present invention.

【図4】本発明の連続薄膜型磁気ディスクの断面模式
図。
FIG. 4 is a schematic sectional view of a continuous thin film magnetic disk of the present invention.

【図5】本発明にかかる溝のある連続薄膜型磁気ディス
ク媒体と従来の平滑面を有する磁気ディスク媒体との浮
上開始速度の調査結果を示す図。
FIG. 5 is a diagram showing the results of examination of the levitation start speeds of a continuous thin film magnetic disk medium having grooves according to the present invention and a conventional magnetic disk medium having a smooth surface.

【符号の説明】[Explanation of symbols]

1…磁気ディスク、2…回転制御機構、3…磁気ヘッ
ド、4…ヘッド位置決め制御機構、5…軽荷重スプリン
グ、6…CSSゾ−ン、7…デ−タゾ−ン、8…非デ−
タゾ−ン、9…潤滑膜、10…保護膜、11…磁性膜、
12…中間膜、13…下地膜、14,15…溝。
DESCRIPTION OF SYMBOLS 1 ... Magnetic disk, 2 ... Rotation control mechanism, 3 ... Magnetic head, 4 ... Head positioning control mechanism, 5 ... Light load spring, 6 ... CSS zone, 7 ... Data zone, 8 ... Non-data
Luzon, 9 ... Lubrication film, 10 ... Protective film, 11 ... Magnetic film,
12 ... Intermediate film, 13 ... Underlayer film, 14, 15 ... Grooves.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】基板上に順次、下地膜、磁性膜、保護膜、
潤滑膜を形成してなる連続薄膜型磁気ディスク媒体にお
いて、磁気ディスク媒体の非データゾーンの保護膜に周
期的かつ規則的に微小凹部を形成して潤滑剤を塗布し、
かつ少なくとも磁気ディスクのデータゾーンに周期的か
つ規則的に凹部を形成して潤滑剤を塗布することを特徴
とする連続薄膜型磁気ディスク媒体。
1. A base film, a magnetic film, a protective film, and
In a continuous thin film magnetic disk medium formed with a lubricating film, a lubricant is applied by periodically and regularly forming minute recesses in a protective film in a non-data zone of the magnetic disk medium,
A continuous thin film magnetic disk medium, characterized in that recesses are periodically and regularly formed in at least the data zone of the magnetic disk and a lubricant is applied.
JP22201991A 1991-09-03 1991-09-03 Continuous thin-film type magnetic disk medium Pending JPH0562148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22201991A JPH0562148A (en) 1991-09-03 1991-09-03 Continuous thin-film type magnetic disk medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22201991A JPH0562148A (en) 1991-09-03 1991-09-03 Continuous thin-film type magnetic disk medium

Publications (1)

Publication Number Publication Date
JPH0562148A true JPH0562148A (en) 1993-03-12

Family

ID=16775833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22201991A Pending JPH0562148A (en) 1991-09-03 1991-09-03 Continuous thin-film type magnetic disk medium

Country Status (1)

Country Link
JP (1) JPH0562148A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007250091A (en) * 2006-03-16 2007-09-27 Toshiba Corp Patterned medium and its manufacturing method, and magnetic recording device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007250091A (en) * 2006-03-16 2007-09-27 Toshiba Corp Patterned medium and its manufacturing method, and magnetic recording device
US7898768B2 (en) 2006-03-16 2011-03-01 Kabushiki Kaisha Toshiba Patterned medium with magnetic pattern depth relationship
US8257560B2 (en) 2006-03-16 2012-09-04 Kabushiki Kaisha Toshiba Patterned media and method of manufacturing the same, and magnetic recording apparatus

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