JPS6177181A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPS6177181A JPS6177181A JP19663784A JP19663784A JPS6177181A JP S6177181 A JPS6177181 A JP S6177181A JP 19663784 A JP19663784 A JP 19663784A JP 19663784 A JP19663784 A JP 19663784A JP S6177181 A JPS6177181 A JP S6177181A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- cleaning head
- head
- magnetic
- disk device
- 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
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野Ｊ
本発明は固定形の磁気ディスク装置、特に磁気ディスク
表面を常に清浄釦維持することが可能な磁気ディスク装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention J The present invention relates to a fixed magnetic disk device, and particularly to a magnetic disk device that can keep the surface of a magnetic disk always clean.
一般【固定形の磁気ディスク装置では、高速で回転する
磁気ディスク上に記録再生用磁気ヘッドをサブミクロン
オーダの空気層を介して浮上させ、情報を記録再生する
方式が採用されている。このため前記磁気ディスクと磁
気ヘッドとの間隙に塵あ込などの汚染物が介在した場合
には、磁気ディスクと磁気ヘッドとが衝突するから、機
械的および熱的な損傷による重大な障害を発生する恐れ
がある。Generally speaking, fixed magnetic disk drives use a method for recording and reproducing information by floating a magnetic head for recording and reproducing above a magnetic disk that rotates at high speed through a layer of air on the order of submicrons. Therefore, if contaminants such as dust are present in the gap between the magnetic disk and the magnetic head, the magnetic disk and magnetic head will collide, causing serious problems due to mechanical and thermal damage. There is a risk that
従来は上記対策として、Ｓ塵化を目標とした生産工程、
または特開昭５５−５８８５７号、同５５−５８８５９
号、同５７−１５４６８８号および同５９−５５６８３
号の各公報に例示されてｂるように、装置内を循環する
空気および装置内に混入する外気の除塵によプ清浄化が
行われている。Conventionally, as the above countermeasures, production processes with the goal of reducing S dust,
or JP-A No. 55-58857, No. 55-58859
No. 57-154688 and No. 59-55683
As exemplified in each of the publications of the above-mentioned publications, cleaning is performed by removing dust from the air circulating within the apparatus and the outside air mixed into the apparatus.
ところが磁気ディスク装置の高記録密度化に伴って問題
となる塵あいも微小化し、例えばクラス１０の超クリー
ンルームで装置を組立てた場合でも、Ｏ０！Ｍｔ’の内
容積の装置内に実際の使用上、問題となる粒径０．２μ
ｍ以上の塵あいが数十個程度入ってしまう恐れがある。However, as the recording density of magnetic disk devices increases, the problem of dust particles becomes smaller, and even when the device is assembled in a class 10 ultra-clean room, O0! Particle size 0.2μ is a problem in actual use in a device with an internal volume of Mt'.
There is a possibility that about several dozen dust particles with a diameter of m or more may be trapped.
したがって、実際上、装置内部の無塵化を実現すること
は非常に困難な状況である。Therefore, in practice, it is extremely difficult to achieve dust-free interior of the device.
また、従来技術では磁気ディスクの表面に付着しｆｃ塵
あ込などの異物に対する配慮がなされていなｈ念め、前
記塵あいに対する影響を完全に除去できない問題があっ
た。Further, in the prior art, consideration has not been given to foreign matter such as FC dust that adheres to the surface of the magnetic disk, and there is a problem in that the influence of the dust cannot be completely eliminated.
本発明は上記にかんがみ磁気ディスク周囲の空気に混入
する塵あいに起因する障害を防止し、信頓度の高す磁気
ディスク装置を提供することを目的とするものでるる。SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a magnetic disk drive that prevents troubles caused by dust mixed in the air around a magnetic disk and has a high degree of reliability.
〔発明の概要）
本発明は上記目的を達成するために、磁気ディスクと記
録再生用磁気ヘッドとを備える磁気ディスク装置におい
て、前記磁気ディスクの回転方向に対して前記磁気ヘッ
ドの前方に、磁気ディスク用クリーニングヘッドを配設
したことを特徴とする。[Summary of the Invention] In order to achieve the above object, the present invention provides a magnetic disk device including a magnetic disk and a recording/reproducing magnetic head, in which a magnetic disk is provided in front of the magnetic head with respect to the rotational direction of the magnetic disk. It is characterized by the fact that it is equipped with a cleaning head for cleaning.
〔発明の実施例ｊ 以下、本発明の実施例を図面について説明する。[Embodiments of the invention j Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係わる磁気ディスク装置の一実施例を
示す斜視図である。同図において、１は矢印Ａ方向に回
転される磁気ディスク、２はガイドアーム４に取付けら
れた四−ドアーム３Ｂの先端に装着した記録再生用磁気
ヘッドで、この磁気ヘッド２は磁気ディスク１上ＩＣ微
小なＩＶＪ隙を保って浮上さルている。５はロードアー
ム３Ａの先端（装着さｎた磁気ディスク用クリーニング
へ、ドで、このクリーニングヘッド５は磁気ディスク１
の回転方向Ａに対して前記磁気ヘッド２の前号に配設さ
れて−る。、７はガイドアーム４に取付けられ、ａ−ド
アーム３Ａを支持する形状記憶合金製アクチュエータで
、このアクチェエータ７とａ −ドアーム３Ａとくよシ
セル７０−ディング機構６Ａを構成している。FIG. 1 is a perspective view showing an embodiment of a magnetic disk device according to the present invention. In the figure, 1 is a magnetic disk rotated in the direction of arrow A, 2 is a magnetic head for recording and reproducing attached to the tip of a four-door arm 3B attached to a guide arm 4, and this magnetic head 2 is placed on the magnetic disk 1. The IC is floating while maintaining a small IVJ gap. 5 is the end of the load arm 3A (for cleaning the attached magnetic disk), and this cleaning head 5 is for cleaning the magnetic disk 1.
The magnetic head 2 is disposed at the front end of the magnetic head 2 with respect to the rotational direction A. , 7 is an actuator made of a shape memory alloy that is attached to the guide arm 4 and supports the a-door arm 3A, and the actuator 7, the a-door arm 3A, and the cross section 70 constitute the ding mechanism 6A.
上記クリーニングヘッド５は半円柱状に形成されている
が、磁気ディスク１の回転時におけるクリーニングヘッ
ド５の浮上高さが磁気ヘッド２の浮上高さに比べて小さ
く、かつ磁気ディスク１の半径方向に対するヘッド幅が
磁気ヘッド２の幅に比べて大きｌ、ｑ、：ｌ、ｑう条件
を連星すれば、特に限定する必要はな−。The cleaning head 5 is formed in a semi-cylindrical shape, but the flying height of the cleaning head 5 when the magnetic disk 1 rotates is smaller than the flying height of the magnetic head 2, and the flying height of the cleaning head 5 is smaller than the flying height of the magnetic head 2 in the radial direction of the magnetic disk 1. As long as the head width is larger than the width of the magnetic head 2 (l, q, :l, q), there is no need for any particular limitation.
また、クリーニングヘッド５の材料としては、磁気ディ
スク１との摺動時における磁気ディスク１の機械的およ
び熱的な劣化を防止するために、低硬度で、かつ高熱伝
導率で、しかも潤滑性に優れた材料、例えばカーボンお
よびカーボンを主成分とする複合材が最適である。In addition, the cleaning head 5 is made of a material that has low hardness, high thermal conductivity, and lubricity to prevent mechanical and thermal deterioration of the magnetic disk 1 during sliding with the magnetic disk 1. Good materials, such as carbon and carbon-based composites, are optimal.
次に前記形状記憶合金製アクチュエータ７の動作を第２
図（ａ）（ｂ）について説明する。Next, the operation of the shape memory alloy actuator 7 is performed in a second manner.
Figures (a) and (b) will be explained.
盾温においてアクチュエータ７は第２図（ａ）に示すよ
うに、自由端（図では左端部）が上方にたわんだ形状に
記憶されており、ロードアーム３Ａを持ち上げてＡるた
め、クリーニングヘッド５は磁気ディスク１の表面から
引き離されてバる。As shown in FIG. 2(a), the actuator 7 is memorized in a shape in which the free end (the left end in the figure) is bent upward at the shield temperature, and in order to lift the load arm 3A, the cleaning head 5 is pulled away from the surface of the magnetic disk 1 and burrs.
いま、アクチェエータ７に直流電流を通電して変態点以
上の温度にすれば、そのアクチュエータ７は第２図（ｂ
）に示すように、予じめ記憶させてお−た形状に変形す
るため、ロードアーム３Ａが下降するから、クリーニン
グヘッド５は磁気ディスク１の表面に接触する。この状
態で、ガイドアーム４に！り一１！ ／Ｌ／ ７ ｒ：
Ｉ−ディング１１Ａ１１１１６Ａを介してクリーニング
ヘッド５をシーク動作させることにより、磁気ディスク
１の全表面にわたってＭｉあ込などの汚染物を除去する
ことができる。Now, if we apply a direct current to the actuator 7 and raise the temperature to above the transformation point, the actuator 7 will become as shown in Figure 2 (b).
), the cleaning head 5 comes into contact with the surface of the magnetic disk 1 as the load arm 3A descends to deform into the pre-stored shape. In this state, go to guide arm 4! Riichi 1! /L/7r:
By causing the cleaning head 5 to perform a seek operation via the I-ding 11A11116A, contaminants such as Mi deposits can be removed from the entire surface of the magnetic disk 1.
このようにして磁気ディスク１の表面をり１７−ニング
した後、アクチュエータ７への通電を停止 ・すれば
、アクデーエータ７は温度の低下により第２図（ａ）に
示す状態に復帰する。After the surface of the magnetic disk 1 has been etched in this manner, the power supply to the actuator 7 is stopped, and the actuator 7 returns to the state shown in FIG. 2(a) due to a decrease in temperature.
上述したアクチェエータ７の動作において、そのアクチ
ュエータ７の形状記憶部にヒータ線を巻き付けて局部的
に加熱してもよく、また低温側と高温側における記憶形
状を第２図と反転させても、全く同様の効果かえられる
ことは云うまでもない。In the operation of the actuator 7 described above, a heater wire may be wound around the shape memory part of the actuator 7 to locally heat it, or even if the memory shape on the low temperature side and high temperature side is reversed from that shown in FIG. Needless to say, the same effect can be obtained.
なお、上記動作を実現する形状記憶合金としては、Ｎｉ
−Ｔｉ 、 Ｃｕ−Ａ１−ＮｉおよびＣｕ−Ｚｎ−Ａｊ
！などが好適である。Note that Ni is a shape memory alloy that realizes the above operation.
-Ti, Cu-A1-Ni and Cu-Zn-Aj
! etc. are suitable.
第３図疋示す他つ実施例は、磁気ヘッド２およびクリー
ニングヘッド５の双方を、ガイドアーム４に取付けたセ
ルフローデング機構６Ｂ、６ｋによりそれぞれ支持する
ように構成したものである。In another embodiment shown in FIG. 3, both the magnetic head 2 and the cleaning head 5 are supported by self-loading mechanisms 6B and 6k attached to the guide arm 4, respectively.
このように構成すれば、磁気ヘッド２とクリーニングへ
、ラド５をそれぞれ独自に土下動させることが町ｎｐで
あるから、ディスクバックの交換可能な磁気ディスク装
置にも適用できることはもちろんである。With this configuration, it is possible to independently move the magnetic head 2 and the cleaning head 5 to the ground, so it is of course applicable to a magnetic disk device with a replaceable disk back.
以上説明したように、本発明によれば、磁気ディスク装
置の製造工程および実使用状態におりて、磁気ディスク
の表面に付着した塵あいなどの汚染物を完全に除去し、
磁気ディスクの表面を常に清浄な状態に保つことかでき
るので、塵あいに起因する磁気ディスク装置の障害を大
幅に低減させ、信頼度の向上をはかることができる。As explained above, according to the present invention, contaminants such as dust adhering to the surface of a magnetic disk are completely removed during the manufacturing process of the magnetic disk device and during actual use.
Since the surface of the magnetic disk can always be kept clean, failures in the magnetic disk device caused by dust can be significantly reduced, and reliability can be improved.
第１図は本発明の磁気ディスク装置の一実施例を示す斜
視図、第２図（ａ） （ｂ）は第１図のアクチェエータ
の動作説Ｆ３Ａ図、第３図は本発明に係わる他の実施例
の斜視図である。
１・・・磁気ディスク、２・・・磁気ヘッド、５Ａ、３
Ｂ・・・ロードアーム、５・・・クリーニングヘッド、
６Ａ１６Ｂ・・・セルフ０−ディング機構、７・・・ア
クチュエータ。FIG. 1 is a perspective view showing an embodiment of the magnetic disk device of the present invention, FIGS. 2(a) and 2(b) are F3A diagrams illustrating the operation of the actuator in FIG. 1, and FIG. It is a perspective view of an example. 1...Magnetic disk, 2...Magnetic head, 5A, 3
B...Load arm, 5...Cleaning head,
6A16B... Self-0-ding mechanism, 7... Actuator.
Claims (1)
気ディスク装置において、前記磁気ディスクの回転方向
に対して前記磁気ヘッドの前方に、磁気ディスク用クリ
ーニングヘッドを配設したことを特徴とする磁気ディス
ク装置。 ２、上記磁気ディスク用クリーニングヘッドまたはこの
クリーニングヘッドと記録再生用磁気ヘッドの双方を、
形状記憶合金製アクチュエータとロードアームとからな
るセルフローディング機構により支持するようにしたこ
とを特徴とする特許請求の範囲第１項記載の磁気ディス
ク装置。[Scope of Claims] 1. In a magnetic disk device including a magnetic disk and a magnetic head for recording and reproducing, a cleaning head for the magnetic disk is disposed in front of the magnetic head with respect to the rotational direction of the magnetic disk. A magnetic disk device featuring: 2. The above magnetic disk cleaning head or both this cleaning head and recording/reproducing magnetic head,
2. The magnetic disk device according to claim 1, wherein the magnetic disk device is supported by a self-loading mechanism comprising an actuator made of a shape memory alloy and a load arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19663784A JPS6177181A (en) | 1984-09-21 | 1984-09-21 | Magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19663784A JPS6177181A (en) | 1984-09-21 | 1984-09-21 | Magnetic disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6177181A true JPS6177181A (en) | 1986-04-19 |
Family
ID=16361076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19663784A Pending JPS6177181A (en) | 1984-09-21 | 1984-09-21 | Magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6177181A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04146583A (en) * | 1990-10-05 | 1992-05-20 | Nec Ibaraki Ltd | Magnetic disk device |
| US6188545B1 (en) * | 1998-11-09 | 2001-02-13 | Castlewood Systems, Inc. | Moveable disk wiper apparatus and method |
| US7542228B2 (en) | 2007-08-30 | 2009-06-02 | Hitachi Global Storage Technologies Netherlands B.V. | Frictional heat assisted recording |
| US20160035385A1 (en) * | 2013-12-20 | 2016-02-04 | Seagate Technology Llc | Contamination reduction head for media |
-
1984
- 1984-09-21 JP JP19663784A patent/JPS6177181A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04146583A (en) * | 1990-10-05 | 1992-05-20 | Nec Ibaraki Ltd | Magnetic disk device |
| US6188545B1 (en) * | 1998-11-09 | 2001-02-13 | Castlewood Systems, Inc. | Moveable disk wiper apparatus and method |
| US7542228B2 (en) | 2007-08-30 | 2009-06-02 | Hitachi Global Storage Technologies Netherlands B.V. | Frictional heat assisted recording |
| US20160035385A1 (en) * | 2013-12-20 | 2016-02-04 | Seagate Technology Llc | Contamination reduction head for media |
| US9613658B2 (en) | 2013-12-20 | 2017-04-04 | Seagate Technology Llc | Contamination reduction head for media |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR960009887B1 (en) | Method and apparatus for cleaning disks | |
| US20060177570A1 (en) | Hybrid coating for magnetic heads | |
| US6570727B1 (en) | Method and apparatus for erasing information from a disk within a magnetic disk drive using an externally generated magnetic field | |
| US4384311A (en) | Method for cleaning the disc surface and the head support structure in a magnetic disc drive | |
| US6278584B1 (en) | Friction control on HGA ramp load/unload surface | |
| US6679762B2 (en) | Recession control via thermal expansion coefficient differences in recording heads during lapping | |
| US20060130874A1 (en) | Oblique burnish/wipe mechanism for hard drive disk like media | |
| JP2004335083A (en) | Device and method for constituting air bearing surface of slider in disk drive for generating high temperature within thermally assisted recording | |
| US7027246B2 (en) | Method for servo pattern application on single-side processed disks in a merged state | |
| US6230380B1 (en) | Slider for burnishing a disc | |
| US6226155B1 (en) | Ramp load type magnetic disk unit | |
| US4490766A (en) | Magnetic recording disk cleaning using controlled actuator motion | |
| JPS6177181A (en) | Magnetic disk device | |
| US6231801B1 (en) | Method to reduce wear for proximity recording in a magnetic disc storage system | |
| JP4180823B2 (en) | Wear durability using high wear-resistant sliding pads | |
| US6589353B1 (en) | Treatment of air-bearing surface of a disc drive slider with light and oxidizing gas | |
| US7513820B2 (en) | Method and apparatus for producing micro-texture on a slider substrate using chemical and mechanical polishing techniques | |
| US6339517B1 (en) | Dust removing apparatus for disk drive | |
| JP2004355798A (en) | Microparticle remover for data storage device, ramp for data storage device and data storage device | |
| JP2000215430A (en) | Magnetic head and its production as well as magnetic disk device | |
| US6934101B2 (en) | Method and apparatus using reverse disk rotation to achieve slider contact with a disk surface | |
| US6031697A (en) | Method of cleaning disk drive recording head | |
| JP2933042B2 (en) | Magnetic disk drive | |
| US6959483B2 (en) | Method of making a recording head | |
| US8034185B2 (en) | High efficiency and high throughput cascade scrub wash machine for rigid magnetic recording media |