JPS59218668A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPS59218668A JPS59218668A JP9355783A JP9355783A JPS59218668A JP S59218668 A JPS59218668 A JP S59218668A JP 9355783 A JP9355783 A JP 9355783A JP 9355783 A JP9355783 A JP 9355783A JP S59218668 A JPS59218668 A JP S59218668A
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- magnetic disk
- film
- vapor
- disk
- 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.)
- Granted
Links
- 239000000314 lubricant Substances 0.000 claims abstract description 35
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 210000001258 synovial membrane Anatomy 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- -1 paraffin Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
- G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
- G11B23/507—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers combined with means for reducing influence of physical parameters, e.g. temperature change, moisture
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/148—Reducing friction, adhesion, drag
Abstract
Description
【発明の詳細な説明】
ｆａ） 発明の技術分野
本発明は磁気ディスク装置に係り、特に該装置内に装着
された磁気ディスクの表面に被覆してなる潤滑膜の温湯
特性を常に定常状態に維持し得るようにした装置構成に
関するものである。DETAILED DESCRIPTION OF THE INVENTION fa) Technical Field of the Invention The present invention relates to a magnetic disk device, and particularly to a method for maintaining the hot water properties of a lubricating film coated on the surface of a magnetic disk mounted in the device in a steady state at all times. The present invention relates to a device configuration that allows for
ｆｂｌ 技術の背景
近年、磁気ディスク装置においては、磁気ディスクの磁
性膜の薄膜化、或いは多層膜化及び磁気ヘッドの低浮」
二化等によって高記録密度化が図られている。そして上
記磁気ヘッドの低浮上化に加えて更に停止時には磁気ヘ
ッドが磁気ディスク面上に接触した状態であり、回転速
度の上昇と共に該磁気ヘッドを微少に浮上させるよ・う
にした、所謂ＣＳ Ｓ （Ｃｏｎｔａｃｔ ５ｔａｒｔ
５ｔｏｐ）方式の採用が進むにつれて、回転起動・停
止時の接触摺動により磁気ヘッド及び磁気ディスク表面
に摩耗、損傷等のへノドクラノシュが発生し易くなり、
これを防止する為、磁気ディスク表面に／ｌ１ｌＩ滑剤
を塗布するか、或いは／ｒ！ｌ滑膜を被覆するなどの特
別な表面処理を施すことが一般に行われている。fbl Technology Background In recent years, in magnetic disk drives, the magnetic film of the magnetic disk has become thinner or multilayered, and the magnetic head has become lower in height.
Efforts are being made to increase the recording density through methods such as binary conversion. In addition to lowering the flying height of the magnetic head, the magnetic head is in contact with the surface of the magnetic disk when stopped, and as the rotational speed increases, the magnetic head is made to float slightly, which is the so-called CS S ( Contact 5tart
As the adoption of the 5top) method progresses, it becomes more likely that problems such as wear and damage will occur on the surface of the magnetic head and magnetic disk due to contact sliding when starting and stopping rotation.
To prevent this, apply /l1lI lubricant to the surface of the magnetic disk, or /r! Special surface treatments such as coating the synovial membrane are commonly performed.
（ｃ） 従来技術と問題点
ところで磁気ディスク装置の高記録密度化に伴って磁気
ヘッドの低浮上化は益々重要となり、前記磁気ディスク
表面に施された潤滑膜も次第に薄膜化されて、最近にお
いては１００人前後の極めて薄い、７ｗｉ滑耐久性の優
れた潤滑膜が要求されている。１又一方前記ＣＳＳ方式
の採用により磁気ディスフ装置としては、塵埃の混入に
起因するヘッドクラッシュを防止するために、密封型に
移行されつつある。しかし、このような密封型磁気ディ
スク装置にあっては、磁気ディスクの高速回転に伴う風
損によって密封装置内の温度が上昇するため、通常該内
部の雰囲気を自己循環空冷方式によって冷却しているが
、それでもなお装置内が６０〜７０°Ｃとなる温度」二
昇は避けられず、かかる温度上昇に起因して磁気ディス
ク表面に施された潤？Ｐ１膜が蒸発消失して、その潤滑
特性が劣化する不都合があり、このような不都合に対す
る耐熱性も要求されている。(c) Prior art and problems By the way, as the recording density of magnetic disk drives increases, lowering the flying height of the magnetic head becomes more and more important, and the lubricating film applied to the surface of the magnetic disk has gradually become thinner. An extremely thin lubricating film with a thickness of around 100 mm and excellent slip resistance is required. On the other hand, with the adoption of the CSS method, magnetic disk drives are being shifted to sealed types in order to prevent head crashes caused by dust intrusion. However, in such a sealed magnetic disk device, the temperature inside the sealed device increases due to wind damage caused by the high-speed rotation of the magnetic disk, so the atmosphere inside the device is usually cooled by a self-circulation air cooling method. However, it is still unavoidable that the temperature inside the device rises to 60 to 70°C, and this rise in temperature causes damage to the moisture applied to the surface of the magnetic disk. There is a disadvantage that the P1 film evaporates and disappears, deteriorating its lubricating properties, and heat resistance against such disadvantages is also required.
ところがこのようなＭ要求に対して、従来磁気ディスク
表面にａ滑膜を形成するに用いられている代表的な潤滑
剤としては、例えばパラフィン、高級脂肪酸族アルコー
ル、高級脂肪酸エステル等の炭化水素、又その弗化物で
あるフロロカーボン系油、５ｉ−５ｉ結合基から成るシ
リコン系油等があり、これら潤滑剤は単独、又は複合の
形で用いられているが、上記潤滑剤の内、炭化水素系の
潤滑剤、特に高級脂肪酸やそのエステル化物によって形
成された潤？ｆＡ膜は、潤滑特性がぼれているため、潤
滑耐久性の向」二に優れた効果があるが、その反面、６
０℃程度の雰囲気中において徐々に蒸発消失して潤滑性
を失って行（といった耐熱性が劣る欠点がある。またフ
ロロカーボン系油やシリコン系油等によって形成された
潤滑膜は、耐熱性では優れた特性を有しているが、潤滑
特性が劣る等、何れも一長−・短の膜特性しか持合せて
いない欠点がある。However, in response to such M requirements, typical lubricants conventionally used to form a synovial film on the surface of a magnetic disk include hydrocarbons such as paraffin, higher fatty acid alcohols, higher fatty acid esters, etc. In addition, there are fluorocarbon oils, which are fluorides thereof, and silicone oils, which consist of 5i-5i bonding groups, and these lubricants are used alone or in combination. lubricants, especially those formed by higher fatty acids and their esters? The fA film has excellent lubrication properties, so it has an excellent effect on lubrication durability, but on the other hand,
It has the drawback of poor heat resistance, such as gradual evaporation and loss of lubricity in an atmosphere of around 0°C.Also, lubricating films formed with fluorocarbon oils, silicone oils, etc. have excellent heat resistance. However, they all have shortcomings such as poor lubrication properties and only limited film properties.
従って、高記録密度化の為の？ｒＩＪ湯酎久性耐耐熱性
に優れた超薄膜の潤滑膜を得ることが至難であることは
もとより、このような潤滑膜を被覆形成した磁気ディス
クを密封型磁気ディスク装置に用いた場合、ヘッドクラ
ッシュ障害がなく、安定した高密度記録或いは再生を行
うことが困難であった。Therefore, is it for higher recording density? Not only is it extremely difficult to obtain an ultra-thin lubricant film with excellent heat resistance, but when a magnetic disk coated with such a lubricant film is used in a sealed magnetic disk drive, head crash failure may occur. Therefore, it was difficult to perform stable high-density recording or reproduction.
＋ｄｌ 発明の目的
本発明ば」二重従来の欠点に鑑み、密封型磁気ディスク
装置内に装着された磁気ディスク表面の潤／！！膜の蒸
発消失を抑制して、該潤／ｆｋ股を常に良好な潤滑特性
を有する定常状態に維持し得る新規な磁気ディスク装置
を提供することを目的とするものである。+dl Object of the Invention In view of the drawbacks of the conventional technology, the present invention has been designed to reduce moisture on the surface of a magnetic disk installed in a sealed magnetic disk device. ! It is an object of the present invention to provide a novel magnetic disk device capable of suppressing the evaporation and loss of the film and maintaining the lubricant/fk joint in a steady state with good lubrication properties at all times.
＋８＋ 発明の構成
そしてこの目的は本発明によれば、ハブ機構部により一
体に支持された磁気ディスクが回転駆動機構に装着され
、該磁気ディスクを気密収容容器により密封して成る装
置構成において、上記気密収容容器内に、磁気ディスク
が回転した際に該磁気ディスク面近傍で生ずる熱気流の
循環に曝されることにより潤滑剤蒸気を発生させる潤滑
剤発生源を配備してなることを特徴とする磁気ディスク
装置を提供することによって達成される。+8+ Structure and object of the invention According to the present invention, in a device structure in which a magnetic disk integrally supported by a hub mechanism is mounted on a rotational drive mechanism, and the magnetic disk is sealed in an airtight container, A lubricant generating source that generates lubricant vapor by being exposed to the circulation of hot air flow generated near the surface of the magnetic disk when the magnetic disk rotates is provided in the airtight container. This is achieved by providing a magnetic disk device.
（ｆｌ 発明の実施例
以下図面を用いて本発明の実施例について詳細に説明す
る。(fl Embodiments of the Invention Examples of the present invention will be described in detail below with reference to the drawings.
図面は本発明に係る磁気ディスク装置の一実施例を概念
的に示す要部断面図である。図において、■は磁気ヘッ
ドと対向する表面に図示しない潤滑膜を被覆して成る磁
気ディスク、２ば複数の磁気ディスク１が一体に支持さ
れ、かつディスク回転駆動機構５に装着されたハブ機構
、３はハブ機構２の中心に穿設された中心通気穴、４ば
中心通気穴３と連通して各磁気ディスク１相互間に循環
雰囲気を流出させる通気小孔、６ばヘッド位置決め機構
、７は気密収容容器、８はハブ機構２の中心に穿設され
た中心通気穴３と連通ずるように、ベース部９に設げら
れた循ｙＪ雰囲気流通穴であり、該流通穴８内には、例
えば前記磁気ディスク１が高速回転した際の風損によっ
て生ずる熱空気流に曝されて容易に蒸発する潤ｌ持剤を
表面積の大きいシリカゲル、或いはスポンジ等の多孔質
部材に含浸させた潤滑剤発生源、即ち潤滑剤含浸部材１
０と、該含浸部材１０配置部分より矢印方向側に図示の
ようにフィルタ１１が配置されている。The drawing is a sectional view of a main part conceptually showing an embodiment of a magnetic disk device according to the present invention. In the figure, (2) is a magnetic disk whose surface facing the magnetic head is coated with a lubricant film (not shown); (2) is a hub mechanism in which a plurality of magnetic disks 1 are integrally supported and is attached to the disk rotation drive mechanism 5; 3 is a central ventilation hole bored in the center of the hub mechanism 2; 4 is a small ventilation hole that communicates with the central ventilation hole 3 and allows circulating atmosphere to flow between the magnetic disks 1; 6 is a head positioning mechanism; 7 is a The airtight storage container 8 is a circulation hole provided in the base portion 9 so as to communicate with the central ventilation hole 3 bored in the center of the hub mechanism 2, and inside the circulation hole 8, For example, a lubricant is generated by impregnating a porous member such as silica gel or sponge with a large surface area with a lubricant that easily evaporates when exposed to hot air flow caused by wind damage when the magnetic disk 1 rotates at high speed. source, i.e. lubricant-impregnated member 1
0, and a filter 11 is arranged as shown in the figure on the arrow direction side from the part where the impregnated member 10 is arranged.
しかして、このように磁気ディスク装置を構成すること
により、前記ディスク回転駆動機構５を駆動して磁気デ
ィスク１を高速回転した際の風損によって発生する熱空
気流が図中矢印で示すように循環し゛Ｃ前記気密収容容
器７内の温度が上昇するとノ（に、該循環熱空気流に曝
された前記潤滑剤台？ｌ ＮＢ ＋８１０も加熱されて
含浸した潤滑剤が蒸発する。その潤詣剤茎気はフィルタ
１１において潤ンｔ％剤等の粉塵、潤１１ル剤蒸気の大
粒子等を排除して／ｉＩｔ浄な潤メＪｎ、剤蒸気とされ
、ハブ機構２の中心に穿設された中心通気穴３内を流通
してそれと連通ずる各通気小孔４」−り各磁気ディスク
１相互間に流出される１１２ｉ環ｉ条路により気密収容
容器７内に充満される。By configuring the magnetic disk device in this way, the hot air flow generated by the windage when the disk rotation drive mechanism 5 is driven to rotate the magnetic disk 1 at high speed is as shown by the arrow in the figure. When the temperature inside the airtight storage container 7 rises during circulation, the lubricant stand exposed to the circulating hot air stream is also heated and the impregnated lubricant evaporates. The filter 11 removes dust such as moisture t% agents, large particles of moisture vapor, etc., and converts it into clean moisture vapor, which is drilled in the center of the hub mechanism 2. The airtight storage container 7 is filled with the 112i ring 112i, which flows through the central ventilation hole 3 and communicates with it through the small ventilation holes 4'' and between the magnetic disks 1.
よって回転中の各磁気ディスク１表面の／ｒｌｌ滑膜を
取り巻（前記潤滑剤蒸気圧と、該？ｒＪＪ滑膜が風損に
よる温度上昇に起因して蒸発する際の蒸気圧とが略平衡
状態となり、その結果前記回転中の各磁気ディスク１表
面の／ｌｉ！ｌ’／Ｐｉ膜は常に良好な潤滑特性を有す
る定常状態に容易に維持、することが可能となる。Therefore, the vapor pressure of the lubricant surrounding the /rll synovial membrane on the surface of each rotating magnetic disk 1 is approximately in equilibrium with the vapor pressure when the ?rJJ synovial membrane evaporates due to temperature increase due to wind damage. As a result, the /li!l'/Pi film on the surface of each rotating magnetic disk 1 can be easily maintained in a steady state with good lubrication properties.
尚、以」二の実施例では潤滑剤発生源として、潤滑剤を
多孔質部材に含浸さ−Ｕた潤滑剤含浸部材を用いた場合
の例について説明したが、これに限定されるものではな
く、例えば／ｌｉ！Ｉ？ｆｋ剤を直接用いるようにして
もよい。また上記した実施例にあっては、前記ディスク
収容容器内の磁気ディスク表面ば勿論のごと、これ以外
の機能部分にも潤肩剤が被着されるが、当該温湯膜は極
めて薄いので装置の機能を損なうことはない。更に前記
ベース部に設＋Ｊられた循環雰囲気流通穴内に、表面積
の大きい含浸性の良い多孔質部材を別に配設しておけば
、気密収容容器内に充満される潤滑剤蒸気が必要以上に
過剰となった場合に、該部材に吸収させて蒸気量の調節
と安定化を図ることも可能である。In the second embodiment, a lubricant-impregnated member in which a porous member is impregnated with a lubricant is used as a lubricant generation source, but the present invention is not limited to this. , for example /li! I? The fk agent may also be used directly. In addition, in the embodiment described above, the lubricating agent is coated not only on the surface of the magnetic disk in the disk storage container but also on other functional parts, but since the hot water film is extremely thin, it does not interfere with the equipment. No loss of functionality. Furthermore, if a porous member with a large surface area and good impregnability is separately arranged in the circulating atmosphere circulation hole provided in the base part, the lubricant vapor filling the airtight container can be prevented from becoming excessive. In this case, it is also possible to adjust and stabilize the amount of steam by absorbing it into the member.
（ｇｌ 発明の効果
以上の説明から明らかなように、本発明に係る磁気ディ
スク装置の構造によれば、簡単な改良構成により、装置
内に装着され、かつ回転駆動中の磁気ディスク表面の潤
滑膜の蒸発消失が抑制され、該′ａ滑膜が當に良好な潤
滑特性を有する定常状態に維持することができる利点を
有する。依ってこの種の磁気ディスク装置、或いは磁気
ヘッドの低浮上化、ＣＳＳ方式等を採用した密封型磁気
ディスク装置などに適用して極めて有利である。(gl. Effects of the Invention As is clear from the above explanation, the structure of the magnetic disk device according to the present invention allows a lubricating film to be formed on the surface of a magnetic disk installed in the device and being rotated by a simple improved configuration. This has the advantage of suppressing the evaporation loss of the synovium and maintaining a steady state in which the synovial film has very good lubrication properties.Therefore, this type of magnetic disk device or magnetic head has the advantage of lowering the flying height. It is extremely advantageous to apply it to sealed magnetic disk devices that employ the CSS method or the like.
図面は本発明に係る磁気ディスク装置の一実施例を概念
的に示す要部断面図である。
図面において、■は潤滑膜が被覆された磁気ディスク、
２はハブ機構、３は中心通気穴、４は通気小孔、５はデ
ィスク回転駆動機構、７は気密収容容器、８は循環雰囲
気流通穴、９はベース部、ｌＯは潤滑剤含浸部材、１１
はフィルタを示す。The drawing is a sectional view of a main part conceptually showing an embodiment of a magnetic disk device according to the present invention. In the drawing, ■ indicates a magnetic disk coated with a lubricating film;
2 is a hub mechanism, 3 is a center ventilation hole, 4 is a small ventilation hole, 5 is a disk rotation drive mechanism, 7 is an airtight storage container, 8 is a circulating atmosphere distribution hole, 9 is a base portion, IO is a lubricant impregnated member, 11
indicates a filter.
Claims (1)
駆動機構に装着され、該磁気ディスクを気密収容容器に
より密封して成る装置構成において、上記気密収容容器
内に、磁気ディスクが回転した際に該磁気ディスク面近
傍で生ずる熱気流の循環に曝されることにより潤滑剤蒸
気を発生させる潤滑剤発生源を配備してなることを特徴
とする磁気ディスク装置。In a device configuration in which a magnetic disk integrally supported by a hub mechanism is mounted on a rotation drive mechanism, and the magnetic disk is sealed in an airtight housing container, when the magnetic disk rotates in the airtight housing container, 1. A magnetic disk device comprising a lubricant generation source that generates lubricant vapor by being exposed to circulation of hot air current generated near the surface of the magnetic disk.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9355783A JPS59218668A (en) | 1983-05-26 | 1983-05-26 | Magnetic disk device |
| US06/618,078 US4626941A (en) | 1983-05-26 | 1984-05-22 | Method and apparatus for suppressing the evaporation of lubricant film coated on magnetic disks of a disk storage |
| AU28569/84A AU548076B2 (en) | 1983-05-26 | 1984-05-24 | The mehod and apparatus for suppressing the evaporation of lubricant film coated on magnetic disks of disk storage |
| EP84303511A EP0127444B1 (en) | 1983-05-26 | 1984-05-24 | Lubricant film coated magnetic disks |
| DE8484303511T DE3462190D1 (en) | 1983-05-26 | 1984-05-24 | Lubricant film coated magnetic disks |
| CA000455122A CA1217561A (en) | 1983-05-26 | 1984-05-25 | Method and apparatus for suppressing the evaporation of lubricant film coated on magnetic disks of disk storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9355783A JPS59218668A (en) | 1983-05-26 | 1983-05-26 | Magnetic disk device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59218668A true JPS59218668A (en) | 1984-12-08 |
| JPH0121557B2 JPH0121557B2 (en) | 1989-04-21 |
Family
ID=14085549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9355783A Granted JPS59218668A (en) | 1983-05-26 | 1983-05-26 | Magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59218668A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02130789A (en) * | 1988-10-31 | 1990-05-18 | Internatl Business Mach Corp <Ibm> | Magnetic data recording device and method |
| US5381284A (en) * | 1992-05-18 | 1995-01-10 | International Business Machines Corporation | Spacer ring reservoir for magnetic recording disk lubricant |
| US5627699A (en) * | 1994-03-17 | 1997-05-06 | International Business Machines Corporation | Magnetic disk unit |
| US6914739B2 (en) | 2002-11-14 | 2005-07-05 | Hitachi Global Storage Technologies Netherlands B.V. | Closed loop lubrication system for moving magnetic media |
| US6917495B2 (en) | 2000-07-05 | 2005-07-12 | Hitachi, Ltd. | Magnetic disk drive |
-
1983
- 1983-05-26 JP JP9355783A patent/JPS59218668A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02130789A (en) * | 1988-10-31 | 1990-05-18 | Internatl Business Mach Corp <Ibm> | Magnetic data recording device and method |
| US5381284A (en) * | 1992-05-18 | 1995-01-10 | International Business Machines Corporation | Spacer ring reservoir for magnetic recording disk lubricant |
| US5627699A (en) * | 1994-03-17 | 1997-05-06 | International Business Machines Corporation | Magnetic disk unit |
| CN1041249C (en) * | 1994-03-17 | 1998-12-16 | 国际商业机器公司 | Magnetic disk unit |
| US6917495B2 (en) | 2000-07-05 | 2005-07-12 | Hitachi, Ltd. | Magnetic disk drive |
| US6914739B2 (en) | 2002-11-14 | 2005-07-05 | Hitachi Global Storage Technologies Netherlands B.V. | Closed loop lubrication system for moving magnetic media |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0121557B2 (en) | 1989-04-21 |
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