JPH0690763B2 - Magnetic recording / reproducing device - Google Patents
Magnetic recording / reproducing deviceInfo
- Publication number
- JPH0690763B2 JPH0690763B2 JP62084428A JP8442887A JPH0690763B2 JP H0690763 B2 JPH0690763 B2 JP H0690763B2 JP 62084428 A JP62084428 A JP 62084428A JP 8442887 A JP8442887 A JP 8442887A JP H0690763 B2 JPH0690763 B2 JP H0690763B2
- Authority
- JP
- Japan
- Prior art keywords
- disk
- magnetic
- head
- film
- magnetic recording
- 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
- 230000001681 protective effect Effects 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 15
- 230000001050 lubricating effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 11
- 239000000314 lubricant Substances 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910020630 Co Ni Inorganic materials 0.000 description 4
- 229910002440 Co–Ni Inorganic materials 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910018104 Ni-P Inorganic materials 0.000 description 2
- 229910018536 Ni—P Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- AYWSZYFQXSLSFY-UHFFFAOYSA-N 1,2-dihydrotriazine-5,6-dithione Chemical compound SC1=CN=NN=C1S AYWSZYFQXSLSFY-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/255—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for protection against wear
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds
- G11B5/7253—Fluorocarbon lubricant
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Record Carriers (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、磁気ディスクと磁気ヘッドを有する磁気記録
再生装置に係り、特に磁気ディスクと磁気ヘッドが接触
するときの摩擦・摩耗を低減させるための改良に関す
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus having a magnetic disk and a magnetic head, and particularly to reduce friction and wear when the magnetic disk and the magnetic head come into contact with each other. Regarding the improvement of.
〔従来の技術〕 磁気記録再生装置（以下装置と略記する）は、磁気記録
媒体を有する磁気ディスク（以下ディスクと略記する）
と情報の記録再生に用いる磁気ヘッド（以下ヘッドと略
記する）を主な構成要素としている。現在主流になって
いる装置はコンタクト・スタート・ストップ方式と呼ば
れ、この方式においては、装置の作動前にヘッドとディ
スクは接触状態にあり、作動開始時にはディスクが回転
を始め、このときヘッドとの間に摩擦力が生じる。作動
中は、ディスクの回転速度が速い（約3600r.p.m）た
め、ヘッドは気流の作用によりディスクから0.2〜0.5μ
ｍ浮上している。この状態で記録再生が行われる。操作
終了時にディスクの回転が止まる際に、ヘッドとディス
クは再び接触状態になる。[Prior Art] A magnetic recording / reproducing apparatus (hereinafter abbreviated as apparatus) is a magnetic disk having a magnetic recording medium (hereinafter abbreviated as disk).
And a magnetic head (hereinafter abbreviated as a head) used for recording and reproducing information is a main component. The current mainstream device is called the contact start / stop system.In this system, the head and the disk are in contact with each other before the operation of the device. A frictional force is generated between them. During operation, the rotation speed of the disk is fast (about 3600 rpm), so the head is 0.2 to 0.5 μ from the disk due to the action of the air flow.
It is emerging. Recording and reproduction are performed in this state. When the disk stops rotating at the end of the operation, the head and the disk come into contact with each other again.
この方式では、操作開始時及び終了時にヘッドとディス
クは、接触摩擦状態になる。このときのヘッドとディス
クの摩擦力を低減させるために、ディスクの表面に保護
膜を形成させることが一般に行われている。この保護膜
の役割りは、ヘッドとディスクの摩擦力を低減させるだ
けではなく、ヘッドがディスクから浮上している際に、
わずかなバランスの変化やディスクの表面の凹凸に対し
衝突した際のディスクの磁性層の損傷を保護する役目が
ある。更に磁性層の材質によっては、空気中の湿度等に
よる腐食の恐れがあり、前記保護層はそれを抑制する役
割りもある。In this method, the head and the disk are in a contact friction state at the start and end of the operation. In order to reduce the frictional force between the head and the disc at this time, a protective film is generally formed on the surface of the disc. The role of this protective film is not only to reduce the frictional force between the head and the disk, but also when the head is flying above the disk,
It has a role of protecting the magnetic layer of the disk from damage when the disk collides against a slight change in balance or unevenness of the disk surface. Furthermore, depending on the material of the magnetic layer, there is a risk of corrosion due to humidity in the air, and the protective layer also has a role of suppressing it.
上記のように、ディスクにとって重要な構成部である保
護膜としては、従来から種々の材料が知られている。例
えば、金属めっき膜（例えばCr,Rh,Ni-Pめっき等）を保
護膜として被覆する方法があるが、いずれも上記の接触
摩耗現象に対して有効な手段とはならない。また磁性層
の上に形成したポリ珪酸から成る被膜の上に配向性潤滑
剤を被覆して保護膜を形成させる方法（特開昭54-40606
号）や配向性潤滑剤を直接磁性層上に形成させる〔森邦
夫：電気化学54,〔２〕,P96,（′86）〕ことも提案され
ている。しかしながら、いずれの方法においても、前記
のヘッドとディスクとの摩擦力の低減に対する信頼性が
不十分であり、また磁性層とヘッドとのスペーシングが
大きくなり、高記録密度化という点において不利にな
る。As described above, various materials have been conventionally known as the protective film, which is an important component for the disc. For example, there is a method of coating a metal plating film (for example, Cr, Rh, Ni-P plating, etc.) as a protective film, but none of them is an effective means for the above contact wear phenomenon. Further, a method of forming a protective film by coating an orientational lubricant on a film made of polysilicic acid formed on a magnetic layer (JP-A-54-40606)
No.) or an orienting lubricant directly on the magnetic layer [Kunio Mori: Electrochemistry 54, [2], P96, ('86)]. However, in any of the methods, the reliability for reducing the frictional force between the head and the disk is insufficient, and the spacing between the magnetic layer and the head becomes large, which is disadvantageous in terms of high recording density. Become.
さらに、ディスクを構成する磁性層の種類により保護膜
の種類も異なるが、磁性層がCo-Ni等のスパッタ媒体の
場合には、保護膜としてカーボン層を用い、また磁性膜
としてめっき法でCo-Ni-P層を形成させた場合には、保
護膜としてSiO2層と潤滑膜を形成させる方法が試みられ
ている。（日経ニューマテリアルズ,P24〜33,1985年,12
月）。また磁性層がγ−Fe2O3の場合に保護膜としてSiO
2層あるいはSiO2層の上にポリマー潤滑剤をコートする
方法も知られている。（同上） 潤滑剤を直接磁性層の上にコートしたのでは結合力が弱
いため、上記の如く、あらかじめ固体表面に極性を有す
るSiO2等の材料で処理し、潤滑剤をSiO2表面と化学結合
させ、安定化を図ることが行われている。Furthermore, although the type of protective film differs depending on the type of magnetic layer that composes the disk, when the magnetic layer is a sputter medium such as Co-Ni, a carbon layer is used as the protective film and a magnetic film is formed by plating. When a -Ni-P layer is formed, a method of forming a SiO 2 layer and a lubricating film as a protective film has been tried. (Nikkei New Materials, P24-33, 1985, 12
Month). When the magnetic layer is γ-Fe 2 O 3 , SiO is used as a protective film.
A method of coating a polymer lubricant on the two layers or the SiO 2 layer is also known. (Id) for the lubricant directly bonding force than was coated on the magnetic layer is weak, as described above, is treated with a material such as SiO 2 having a polarity in advance a solid surface, SiO 2 surface and the chemistry of the lubricant It is combined with each other for stabilization.
前記したごとく、従来技術においては、ディスク磁性層
に保護膜を形成させるにあたって、潤滑層の密着性と結
合力の強化のために、固体表面に極性を有するSiO2等の
材料による処理を施している。これによって、高速回転
するディスク上の潤滑層の安定化は図られるが、SiO2と
潤滑剤との親和力が増大する結果、潤滑剤の膜厚は必然
的に厚くなり、その結果、ヘッドの摩擦は境界摩擦から
流体摩擦の領域に入り、摩擦抵抗が大きくなる欠点があ
る。また従来技術は、潤滑膜とヘッドの臨界表面張力と
摩擦抵抗に関しての配慮がなされていない。As described above, in the prior art, in forming the protective film on the disk magnetic layer, the solid surface is treated with a material such as SiO 2 having polarity in order to strengthen the adhesion and the bonding force of the lubricating layer. There is. This stabilizes the lubrication layer on the disk rotating at high speed, but as the affinity between SiO 2 and the lubricant increases, the lubricant film inevitably becomes thicker, resulting in the friction of the head. Has a drawback that it enters the region of fluid friction from boundary friction and the friction resistance increases. Further, the prior art does not consider the critical surface tension and frictional resistance of the lubricating film and the head.
本発明は、ディスクおよびヘッドの処理において臨界表
面張力と摩擦抵抗に関して考慮し、ディスクとヘッドの
摩擦抵抗、ひいては摩耗を低減させることを目的とす
る。It is an object of the present invention to consider the critical surface tension and the frictional resistance in the processing of the disk and the head, and reduce the frictional resistance of the disk and the head, and thus the wear.
本発明における第１発明としては、ディスクの磁性膜上
には撥水性および潤滑性を有する固体保護膜が形成され
ており、これに対向するヘッドの面上には潤滑液膜が形
成されていることが特徴であり、また第２発明として
は、第１発明と逆に、ディスクの磁性膜上には潤滑液膜
が形成されており、これと対向するヘッドの面上には撥
水性および潤滑性を有する固体保護膜が形成されている
ことが特徴である。According to a first aspect of the present invention, a solid protective film having water repellency and lubricity is formed on the magnetic film of the disk, and a lubricating liquid film is formed on the surface of the head facing the solid protective film. Contrary to the first aspect of the invention, the second aspect of the invention is that a lubricating liquid film is formed on the magnetic film of the disk, and the surface of the head facing the same has water repellency and lubrication. The feature is that a solid protective film having properties is formed.
第１発明、第２発明のいずれにおいても、好ましくは、
上記の撥水性および潤滑性を有する固体保護膜はフッ化
炭素よりなり、また好ましくは、上記の潤滑液膜は表面
（すなわちディスク又はヘッドと対向する側の面）に親
水基が配向した単分子または二分子層からなる。In both the first invention and the second invention, preferably,
The above-mentioned solid protective film having water repellency and lubricity is made of fluorocarbon, and preferably, the above-mentioned lubricating liquid film is a single molecule in which hydrophilic groups are oriented on the surface (that is, the surface facing the disk or head). Or it consists of a bilayer.
前記の処理を夫々施されたディスクとヘッドとの接触に
あたっては、前記の固体保護膜と前記の潤滑液膜とが接
触し、ディスクの磁性層はヘッドとの直接摩擦を受けな
い。前記固体保護膜は撥水性を有するため、前記液膜と
反撥し合って液膜と固体保護膜との表面張力による摩擦
抵抗を減少させるように働く。また該固体保護膜は潤滑
性があるので、ディスクとヘッドの接触時に該固体保護
膜の構成粒子間又は粒子内に滑りを生じて摩擦を小に
し、ディスクやヘッドの損耗が抑制される。前記潤滑液
膜は潤滑作用を発揮し、ヘッドとディスクの接触を緩和
する。Upon contact between the head and the disk that has been subjected to each of the above treatments, the solid protective film and the lubricating liquid film contact each other, and the magnetic layer of the disk does not receive direct friction with the head. Since the solid protective film has water repellency, it repels the liquid film and acts to reduce the frictional resistance due to the surface tension between the liquid film and the solid protective film. Further, since the solid protective film has lubricity, when the disk and the head come into contact with each other, slippage occurs between or within the particles of the solid protective film to reduce friction, and wear of the disk and head is suppressed. The lubricating liquid film exerts a lubricating action and reduces contact between the head and the disk.
前述のように、液膜の表面に親水基を配向させること
は、それに対向するディスク又はヘッド上の上記撥水性
の面に親水基を向い合わせることになり、その間に働く
反撥力を高める。単分子層又は二分子層からなる液膜の
形成はディスクとヘッドの境界摩擦を減少させる。As described above, aligning the hydrophilic group on the surface of the liquid film causes the hydrophilic group to face the water-repellent surface of the disk or head facing the liquid film, and enhances the repulsive force acting therebetween. The formation of a liquid film composed of a monolayer or a bilayer reduces the boundary friction between the disk and the head.
親水基を表面側に配向した液膜をディスクの磁性層上ま
たはヘッド上に形成する方法としては、ディスクの磁性
層またはヘッドの親水面に対して二分子膜を形成させる
ことによって容易に達成できる。また単分子膜を形成さ
せるには、ディスクの磁性層またはヘッドの疎水面に対
して疎水基を持つ単分子層を形成させればよい。分子長
さの長い潤滑液を用いれば、境界摩擦から流体摩擦への
移行がなされ、摩擦抵抗を更に減少させることができ
る。A method of forming a liquid film in which hydrophilic groups are oriented on the surface side on the magnetic layer of the disk or on the head can be easily achieved by forming a bilayer film on the magnetic layer of the disk or on the hydrophilic surface of the head. . In order to form a monomolecular film, a monomolecular layer having a hydrophobic group may be formed on the magnetic layer of the disk or the hydrophobic surface of the head. If a lubricant having a long molecular length is used, transition from boundary friction to fluid friction is made, and friction resistance can be further reduced.
実施例１ 厚さ2mmの5.25インチアルミニウム基板上に下地としてN
i-P合金を30μｍの厚みにメッキし、その表面を粗さ0.0
5μｍ以下、厚さ20μｍまで研摩した。その上に磁気記
憶層（磁性層）としてCo-Niを0.07μｍの厚さでスパッ
タ塗布し、その表面に従来と同様の方法で、Ｃの保護層
を形成させた。これをフッ素ガス雰囲気中で処理するこ
とでＣ表面をフッ化炭素に変換して撥水力を持たせた。
一方ヘッド表面のシリコーン油の単分子膜を形成させ
た。このディスクとヘッドの組合せで、コンタクト・ス
タート・ストップ方式により記録再生動作を行った。そ
の結果、25000回後もディスク表面に何ら異常は認めら
れなかった。Example 1 N as a base on a 5.25 inch aluminum substrate having a thickness of 2 mm
iP alloy is plated to a thickness of 30 μm, and the surface has a roughness of 0.0
Polished to a thickness of 5 μm or less and a thickness of 20 μm. Co-Ni as a magnetic memory layer (magnetic layer) was sputter-coated thereon with a thickness of 0.07 μm, and a protective layer of C was formed on the surface thereof in the same manner as in the conventional method. By treating this in a fluorine gas atmosphere, the C surface was converted into fluorocarbon and water repellency was imparted.
On the other hand, a monomolecular film of silicone oil was formed on the head surface. With this combination of disk and head, recording / reproducing operation was performed by the contact start / stop method. As a result, no abnormality was found on the disk surface even after 25,000 times.
実施例２ ディスクとしては実施例１で得られたディスクを用い、
ヘッドとしては、ディスクと対向するヘッドの面に形成
したシリコーン油の液膜を塩化ビニル膜で包囲してなる
ものを用いた。上記塩化ビニル膜は上記シリコーン油液
膜の散逸を防ぐもので、この塩化ビニル膜を通してシリ
コーン油の液がディスクとの対向面側に滲み出るように
なっている。このようなディスクとヘッドを用いて実施
例１と同様にコンタクト・スタート・ストップ方式で試
験したところ、30000回後もディスク表面に何ら異常は
認められなかった。Example 2 The disc obtained in Example 1 was used as the disc,
The head used was one in which a liquid film of silicone oil formed on the surface of the head facing the disk was surrounded by a vinyl chloride film. The vinyl chloride film prevents the silicone oil liquid film from being dissipated, and the silicone oil liquid oozes out through the vinyl chloride film to the side facing the disk. When such a disk and head were tested by the contact start / stop method as in Example 1, no abnormality was recognized on the disk surface even after 30,000 times.
実施例３ 厚さ2mmの5.25インチアルミニウム基板上に下地としてN
i-P合金を30μｍの厚みにめっきし、その表面を粗さ0.0
5μｍ以下、厚さ20μｍまで研摩した。その上に磁気記
憶層（磁性層）としてCo-Niを0.10μｍの厚さでスパッ
タ塗布した。このディスクを80℃‐30分間トリアジンジ
チオール処理して表面を親水性とした。一方ヘッドにつ
いては、カーボン保護層を形成させ、これをフッ素化処
理によってフッ化炭素に変換して撥水性とした。Example 3 N as a base on a 5.25 inch aluminum substrate having a thickness of 2 mm
iP alloy is plated to a thickness of 30 μm and the surface is roughened to 0.0
Polished to a thickness of 5 μm or less and a thickness of 20 μm. Co-Ni as a magnetic memory layer (magnetic layer) was sputter-coated thereon with a thickness of 0.10 μm. The disk was treated with triazinedithiol at 80 ° C for 30 minutes to make the surface hydrophilic. On the other hand, for the head, a carbon protective layer was formed, and this was converted to fluorocarbon by fluorination treatment to make it water repellent.
このディスクとヘッドの組合せで、コンタクト・スター
ト・ストップ方式により記録再生動作を行った。その結
果、25000回後もディスク表面に何ら異常は認められな
かった。With this combination of disk and head, recording / reproducing operation was performed by the contact start / stop method. As a result, no abnormality was found on the disk surface even after 25,000 times.
実施例４ 厚さ2mmの5.25インチアルミニウム基板上に下地としてN
i−Ｐ合金を30μｍ厚みにめっきし、その表面を粗さ0.0
5μｍ以下、厚さ20μｍまで研摩した。その上に磁気記
憶層（磁性層）としてCo-Niを0.10μｍの厚さでスパッ
タ塗布し、その表面に通常行われている方法でカーボン
保護層を形成させた。この表面にシリコン油の単分子膜
を形成させディスクとした。また、ヘッドは実施例３で
用いたものと同じものを用い、これらを組合せてコンタ
クト・スタート・ストップ試験を行った。その結果、25
000回後もディスク表面に何ら異常は認められなかっ
た。Example 4 N as a base on a 5.25 inch aluminum substrate having a thickness of 2 mm
The i-P alloy is plated to a thickness of 30 μm and the surface is roughened to 0.0
Polished to a thickness of 5 μm or less and a thickness of 20 μm. Co-Ni as a magnetic memory layer (magnetic layer) was applied thereon by sputtering to a thickness of 0.10 μm, and a carbon protective layer was formed on the surface thereof by a commonly used method. A disk was formed by forming a monomolecular film of silicon oil on this surface. The same head as that used in Example 3 was used, and a contact start / stop test was conducted by combining these heads. As a result, 25
After 000 times, no abnormality was found on the disc surface.
本発明によれば、ディスクとヘッドとの間の摩擦抵抗ひ
いてはディスクとヘッドの損耗を大幅に低減させること
ができ、装置の長寿命化が達成される。According to the present invention, the frictional resistance between the disk and the head, and thus the wear of the disk and the head, can be significantly reduced, and the life of the apparatus can be extended.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 秀明 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 (72)発明者 沢畠 昇一 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 (72)発明者 森 利克 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 (72)発明者 本地 章夫 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 (72)発明者 藤田 一紀 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideaki Tanaka 4026 Kuji Town, Hitachi City, Hitachi City, Ibaraki Prefecture, Hitachi Research Institute, Ltd. Inside Hitachi Research Laboratory (72) Inventor Toshikatsu Mori 4026 Kuji Town, Hitachi City, Hitachi, Ibaraki Prefecture Hitachi Research Institute Co., Ltd. 72) Inventor Kazuki Fujita 4026 Kuji Town, Hitachi City, Ibaraki Prefecture Hitachi Research Laboratory, Hitachi, Ltd.
Claims (6)
とを具えた磁気記録再生装置において、磁気ディスクの
磁性膜上には撥水性および潤滑性を有する固体保護膜が
形成されており、これに対向する磁気ヘッドの面上には
潤滑液膜が形成されていることを特徴とする磁気記録再
生装置。1. A magnetic recording / reproducing apparatus comprising a magnetic disk and a magnetic head facing the magnetic disk, wherein a solid protective film having water repellency and lubricity is formed on the magnetic film of the magnetic disk. A magnetic recording / reproducing apparatus in which a lubricating liquid film is formed on the surfaces of the magnetic heads facing each other.
請求の範囲第１項記載の磁気記録再生装置。2. The magnetic recording / reproducing apparatus according to claim 1, wherein the solid protective film is made of fluorocarbon.
単分子または二分子層からなる特許請求の範囲第１項記
載の磁気記録再生装置。3. The magnetic recording / reproducing apparatus according to claim 1, wherein the lubricating liquid film comprises a monomolecular or bimolecular layer having hydrophilic groups oriented on the surface.
とを具えた磁気記録再生装置において、磁気ディスクの
磁性膜上には潤滑液膜が形成されており、これに対向す
る磁気ヘッドの面上には撥水性および潤滑性を有する固
体保護膜が形成されていることを特徴とする磁気記録再
生装置。4. A magnetic recording / reproducing apparatus comprising a magnetic disk and a magnetic head facing the magnetic disk, wherein a lubricating liquid film is formed on the magnetic film of the magnetic disk, and a surface of the magnetic head facing the lubricating liquid film is formed. A magnetic recording / reproducing apparatus in which a solid protective film having water repellency and lubricity is formed on the.
請求の範囲第４項記載の磁気記録再生装置。5. The magnetic recording / reproducing apparatus according to claim 4, wherein the solid protective film is made of fluorocarbon.
単分子または二分子層よりなる特許請求の範囲第４項記
載の磁気記録再生装置。6. The magnetic recording / reproducing apparatus according to claim 4, wherein the lubricating liquid film is composed of a monomolecular or bimolecular layer having hydrophilic groups oriented on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62084428A JPH0690763B2 (en) | 1987-04-06 | 1987-04-06 | Magnetic recording / reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62084428A JPH0690763B2 (en) | 1987-04-06 | 1987-04-06 | Magnetic recording / reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63249901A JPS63249901A (en) | 1988-10-17 |
| JPH0690763B2 true JPH0690763B2 (en) | 1994-11-14 |
Family
ID=13830310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62084428A Expired - Lifetime JPH0690763B2 (en) | 1987-04-06 | 1987-04-06 | Magnetic recording / reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0690763B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2513688B2 (en) * | 1987-05-14 | 1996-07-03 | 株式会社東芝 | Magnetic recording media |
| US5200867A (en) * | 1991-07-02 | 1993-04-06 | International Business Machines Corporation | Transducer carrier for disk file with liquid film head-disk interface |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63117379A (en) * | 1986-11-05 | 1988-05-21 | Toshiba Corp | Magnetic disk device |
-
1987
- 1987-04-06 JP JP62084428A patent/JPH0690763B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63117379A (en) * | 1986-11-05 | 1988-05-21 | Toshiba Corp | Magnetic disk device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63249901A (en) | 1988-10-17 |
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