JPS5829183A - Magnetic disc device - Google Patents

Magnetic disc device

Info

Publication number
JPS5829183A
JPS5829183A JP12624581A JP12624581A JPS5829183A JP S5829183 A JPS5829183 A JP S5829183A JP 12624581 A JP12624581 A JP 12624581A JP 12624581 A JP12624581 A JP 12624581A JP S5829183 A JPS5829183 A JP S5829183A
Authority
JP
Japan
Prior art keywords
magnetic disk
magnetic
magnetic head
head
magnetic disc
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
JP12624581A
Other languages
Japanese (ja)
Inventor
Toshikatsu Narumi
利勝 鳴海
Kenichi Ito
健一 伊藤
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12624581A priority Critical patent/JPS5829183A/en
Publication of JPS5829183A publication Critical patent/JPS5829183A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20Driving; Starting; Stopping; Control thereof

Abstract

PURPOSE:To make smooth the start of a device and to prevent damage to a magnetic head and a magnetic disc at start, by providing a magnetic head heater supported near the magnetic head during the operation stop of a magnetic disc device. CONSTITUTION:When a magnetic disc device stops operation and a magnetic head 2 is contacted on the surface of a magnetic head 1, stopped and supported, then a magnetic head heater 5 is supported opposingly to the surface of the magnetic disc 1 near the head 2, and the heater 5 is movably supported at a location not opposing to the magnetic disc 1 when the magnetic disc device is in operation and the magnetic disc 1 keeps rotation. For example, at the start of the magnetic disc, a high frequency voltage is applied to the heater 5 to heat the magnetic head, allowing to evaporate the moisture being a cause to an adsorbing force between the magnetic head 2 and the magnetic disc 1.

Description

【発明の詳細な説明】 本発明は磁気ディスク装置の改良に関する。詳しくは、
磁気ディスク支持回転装置に支持された磁気ディスクと
可動腕アセンブリに支持された磁気ヘッドとへラドポジ
ショナと電子回路部とその他の附属機構とよりなる磁気
ディスク装置の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in magnetic disk drives. For more information,
The present invention relates to an improvement in a magnetic disk drive including a magnetic disk supported by a magnetic disk support and rotation device, a magnetic head supported by a movable arm assembly, a head positioner, an electronic circuit section, and other auxiliary mechanisms.

磁気ディスク装置は、ランダムアクセス性がすぐれてお
り短時間でアクセス出来ること、磁気ディスクを交換す
ることにより記憶容量の増加が容易なこと、情報の信頼
性が高いこと、情報のビット当り価格が比較的安価であ
ること等の理由により電子計算機の記憶装置として多用
されている。
Magnetic disk drives have excellent random access and can be accessed in a short time, storage capacity can be easily increased by replacing magnetic disks, information is highly reliable, and the price per bit of information is comparatively low. It is widely used as a storage device for electronic computers due to its low cost and other reasons.

磁気ディスクとしては針状磁性粒子r二・三酸化鉄(F
e 2 Um>をバインダと混合して円板状のアルミニ
ュウム(A1)合金基板上1ζ塗布した、いわゆる、塗
布形磁気ディスクが多く使用されるが、磁気ディスク装
置の運転中は、空気流の作用により、磁気ヘッドが磁気
ディスク上に数μm〜数分の1μInの距離浮上するが
、磁気ディスク装置が運転を停止し磁気ディスクが回転
していないときは、左様な空気流は存在しないので、磁
気ヘッドは磁気ディスクのCSS (コンタクトスター
トストラフ)ソーン上1ζ接触して停止している。そし
て、磁気ディスク装置の起動にあたっては、上記の空気
流による浮上刃は存在しないから、磁気ヘッドは磁気デ
ィスクと摩擦しながら起動することになる。ところが、
磁気ディスク装置の停止期間中に磁気ヘッドと磁気ディ
スクとが互に吸着して、起動が円滑に行なわれず、場合
によっては、磁気ヘッドや磁気ディスク相互の摩擦によ
りこれら双方に損傷を与えるという欠点がある。
As a magnetic disk, acicular magnetic particles riron trioxide (F
So-called coated magnetic disks are often used, in which e 2 Um> is mixed with a binder and coated on a disk-shaped aluminum (A1) alloy substrate. As a result, the magnetic head levitates above the magnetic disk at a distance of several μm to a fraction of a μIn. However, when the magnetic disk drive is stopped and the magnetic disk is not rotating, the airflow as shown on the left does not exist, so the magnetic head The head comes into contact with 1ζ on the CSS (contact start strafe) horn of the magnetic disk and is stopped. When starting up a magnetic disk device, the magnetic head starts up while rubbing against the magnetic disk since there is no floating blade caused by the air flow. However,
When the magnetic disk drive is stopped, the magnetic head and magnetic disk stick to each other, making it difficult to start up smoothly, and in some cases, friction between the magnetic head and the magnetic disk may cause damage to both. be.

本発明の目的はこの欠点を解消することにあり、磁気デ
ィスクが磁気ディスク支持回転装置によって支持回転さ
れており、磁気ディスク装置の運転中は可動腕アセンブ
リによって支持された磁気ヘッドが空気流による浮上刃
によって極めて僅少な一クリアランスをもって磁気ディ
スクに対接しており、磁気ディスク装置の起動はC8S
方式(コンタクトスタートストップ方式)によってなさ
れる磁気ディスク装置”において、その磁気ディスク装
置の起動にあたり、磁気ディスク装置の停止中に発生し
た磁気ディスク・磁気ヘッド間の吸着力を減少させてそ
の起動を円滑になし、起動にあたって磁気ヘッドや磁気
ディスクが破損するおそれのない磁気ディスク装置を提
供することにある。
An object of the present invention is to eliminate this drawback, and the magnetic disk is supported and rotated by a magnetic disk support and rotation device, and during operation of the magnetic disk device, the magnetic head supported by a movable arm assembly is floated by an air flow. The blade is in contact with the magnetic disk with an extremely small clearance, and the magnetic disk drive is activated by C8S.
When starting up the magnetic disk drive using the "contact start-stop method", it reduces the adhesion force between the magnetic disk and the magnetic head that occurs while the magnetic disk drive is stopped, thereby smoothing the start-up. However, it is an object of the present invention to provide a magnetic disk device in which there is no risk of damage to the magnetic head or magnetic disk during startup.

その要旨は、磁気ディスク装置が運転を停止し磁気ヘッ
ドが磁気ディスクの表面に接触して停止している領域を
、磁気ディスク装置の起動にあたり、加熱する装置を設
けておき、この加熱装置は起動後は磁気ディスクと対向
しない位置に移動して磁気ヘッドの移動を妨げない機構
にしておくことにある。
The gist of this is that when starting up the magnetic disk device, a device is installed that heats the area where the magnetic disk device stops operating and the magnetic head comes into contact with the surface of the magnetic disk. The next step is to create a mechanism that does not interfere with the movement of the magnetic head by moving it to a position where it does not face the magnetic disk.

以下、本発明の着想から具体化への過程を説明し、本発
明の構成と特有の効果とを明らかにする。
Hereinafter, the process from conception to realization of the present invention will be explained, and the structure and unique effects of the present invention will be clarified.

本発明の発明者は、磁気ディスクと磁気ヘッドとの吸着
が、装置停止中にこれら相互間又はこれらの近辺に滞留
する水分に影響されるものと考え。
The inventors of the present invention believe that the attraction between the magnetic disk and the magnetic head is affected by moisture that accumulates between or near them while the apparatus is stopped.

装置の起動にあたって、磁気ヘッドと磁気ディスクとの
接触部を加熱し、そこに滞留している水分を除去すれば
、装置の起動を円滑にし、磁気ヘッドや磁気ディスクの
損傷を防止しつるとの着想を得た。
It is believed that heating the contact area between the magnetic head and magnetic disk when starting up the device and removing moisture that has accumulated there will make the device start up smoother and prevent damage to the magnetic head and magnetic disk. I got an idea.

そこで、この着想の有効性を確認するため、従来技術に
おける磁気ディスク装置の磁気ヘッドと磁気ディスクと
の接触領域に簡単な構造の高周波誘導加熱装置を設けて
おき、10−20時間程度の装置の停止期間中、雰囲気
の湿度、温度等を種々と変化し、その後、上記の加熱装
置を使用し、あるいは、使用しないで起動を繰り返し、
その結果を観察したところ、−室以上の湿度を有する雰
囲気中に一定期間以上磁気ディスク装置を停止した場合
、上記の誘導加熱装置を使用する場合と使用しない場合
とで起動状態に明らかに変化が認められ、上記の誘導加
熱装置が所期の効果を発揮することが確認された。
Therefore, in order to confirm the effectiveness of this idea, we installed a high-frequency induction heating device with a simple structure in the contact area between the magnetic head and the magnetic disk of a conventional magnetic disk device. During the shutdown period, the humidity, temperature, etc. of the atmosphere are varied, and then the startup is repeated with or without using the heating device described above.
After observing the results, we found that when a magnetic disk drive is stopped for a certain period of time in an atmosphere with humidity higher than a -room, there is a clear change in the startup state depending on whether the induction heating device is used or not. It was confirmed that the induction heating device described above exerts the desired effect.

以下、図面を参照しつつ、本発明の一実施例にかかる磁
気ディスク装置について説明し、本発明の構成と特有の
効果とを明らかにする。第1図は、本発明の一実施例に
がかる磁気ディスク装置における、磁気ディスクと磁気
ヘッドと磁気ディスク装置が停止状態にある場合におけ
る本発明の要旨にかかる磁気ヘッド部加熱装置と加熱装
置保持装置とへラドポジショナとを示す平面図であり4
、第2図は、磁気ディスク装置が使用状態にある第1図
に対応する平面図であり、第3図は、第1図に対応する
部分立面図である。図において、1−は磁気ディスクで
あり、2は磁気ヘッドであり可動腕アセンブリ3によっ
て支持されている。可動腕アセンブリ3はへラドポジシ
ョナ4によって駆動される。上述せるとおり、磁気ディ
、スフ装置は、使用状態においては磁気ヘッド2と磁気
ディスク1との間には空気流による浮上力によって極め
て僅少な数μIn〜数分の1μInのクリアランスが存
在しているので接触はしていないが、停止状態において
はかかる空気流による浮上力は存在しないから磁気ディ
スク1と磁気ヘッド2とは接触している。5が本発明の
要旨にかかる磁気ヘッド部加熱装置であり、この実施例
においては高周波誘導加熱装置が採用されている。磁気
ヘッド部加熱装置5は、磁気ヘッド2上にゎずがのクリ
アランスをもって加熱装置保持器6によって支持されて
いる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS A magnetic disk device according to an embodiment of the present invention will be described below with reference to the drawings, and the configuration and unique effects of the present invention will be clarified. FIG. 1 shows a magnetic head heating device and a heating device holding device according to the gist of the present invention in a magnetic disk device according to an embodiment of the present invention, when a magnetic disk, a magnetic head, and a magnetic disk device are in a stopped state. FIG. 4 is a plan view showing the herad positioner
, FIG. 2 is a plan view corresponding to FIG. 1 in which the magnetic disk device is in use, and FIG. 3 is a partial elevational view corresponding to FIG. 1. In the figure, 1- is a magnetic disk, 2 is a magnetic head, and is supported by a movable arm assembly 3. The movable arm assembly 3 is driven by a Herad positioner 4. As mentioned above, in the magnetic disk drive device, when in use, an extremely small clearance of several μIn to a fraction of μIn exists between the magnetic head 2 and the magnetic disk 1 due to the levitation force caused by the air flow. Therefore, the magnetic disk 1 and the magnetic head 2 are not in contact with each other, but in a stopped state, there is no levitation force due to the airflow, so the magnetic disk 1 and the magnetic head 2 are in contact with each other. 5 is a magnetic head heating device according to the gist of the present invention, and in this embodiment, a high frequency induction heating device is employed. The magnetic head heating device 5 is supported by a heating device holder 6 with a clearance above the magnetic head 2.

図示せるとおり、磁気ディスク装置の停止中は磁気ヘッ
ド2はC8Sゾーン1′(磁気ディスク1の周辺部で情
報の書き込まれない領域)上に停止しており、磁気ヘッ
ド部加熱装置5は、磁気ディスク装置停止中は磁気ヘッ
ド2を覆う位置に配設される(第1図参照)、そして、
磁気ディスク装置の起動にあたっては磁気ヘッド部加熱
装置5に高周波電圧を印加して磁気ヘッド部を加熱し磁
気ヘッド2と磁気ディスク1との間の吸着力の原因とな
っている水分を蒸発させる。その結果、起動は円滑に行
なわれ、磁気ディスク1や磁気ヘッド2に損傷を与える
ことはない。磁気ディスク装置の起動完了後は、磁気ヘ
ッド部加熱装置5を第2図に示す位置書と移動して、以
後、磁気ヘッド2の移動の妨げにならないようにする。
As shown in the figure, when the magnetic disk device is stopped, the magnetic head 2 is stopped on the C8S zone 1' (an area on the periphery of the magnetic disk 1 where no information is written), and the magnetic head heating device 5 is When the disk drive is stopped, it is placed in a position that covers the magnetic head 2 (see FIG. 1), and
To start up the magnetic disk device, a high frequency voltage is applied to the magnetic head heating device 5 to heat the magnetic head and evaporate the moisture that causes the attraction force between the magnetic head 2 and the magnetic disk 1. As a result, startup is performed smoothly, and no damage is caused to the magnetic disk 1 or the magnetic head 2. After the magnetic disk device has been started up, the magnetic head heating device 5 is moved to the position shown in FIG. 2 so that it does not interfere with the movement of the magnetic head 2 thereafter.

そのために加熱装置保持装置6は回動可能とされている
。なお、高周波電源(図示せず)と磁気ヘッド部加熱装
置5との接続はこの実施例においては加熱装置保持装置
6を介してなされる。
For this purpose, the heating device holding device 6 is rotatable. In this embodiment, the high frequency power source (not shown) and the magnetic head heating device 5 are connected via a heating device holding device 6.

以上説明せるとおり、本発明によれば、磁気ディスクが
磁気ディスク支持回転装置によって支持回転されており
、磁気ディスク装置の運転中は可動腕アセンブリによっ
て支持された磁気ヘッドが空気流による浮上刃によって
極めて僅少なりリアランスをもって磁気ディスクに対接
しており、磁気ディスク装置の起動はC8S方式によっ
てなされる磁気ディスク装置において、磁気ディスク装
置の起動にあたっては磁気ヘッド部を加熱し、起動後は
磁気ヘッドの運動を妨害しないような位置に移動される
磁気ヘッド部加熱装置を有しているので、起動が円滑で
あり、起動にあたり、摩擦のため磁気ディスク、磁気ヘ
ッドが損傷を受けるような欠点のない磁気ディスク装置
を提供することができる。
As explained above, according to the present invention, the magnetic disk is supported and rotated by the magnetic disk support and rotation device, and during operation of the magnetic disk device, the magnetic head supported by the movable arm assembly is extremely moved by the floating blade caused by the airflow. In a magnetic disk device, the magnetic disk is brought into contact with the magnetic disk with a slight tolerance, and the magnetic disk device is started using the C8S method.When starting the magnetic disk device, the magnetic head section is heated, and after startup, the movement of the magnetic head is controlled. This magnetic disk device has a magnetic head heating device that can be moved to a position where it does not cause interference, so startup is smooth, and the magnetic disk device does not have the disadvantage of damaging the magnetic disk or magnetic head due to friction during startup. can be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発、明の一実施例にかかる磁気ディスク装
置Iζおける磁気ディスクと磁気ヘッドと磁気ディスク
装置が停止状態にある場合における本発明の要旨番ζか
かる磁気ヘッド部加熱装置と加熱装置保持装置とへッド
ポジシ1すとを示す平面図であり、第2図は、磁気ディ
スク装置が使用状態にある第1図に対応する平面図であ
り、第3図は、第1図に対応する部分立面図である。 1・・−磁気ディスク、1′・・・C8Sゾーン、2・
・O磁気ヘッド、3・・Φ可動腕アセンブリ、4・6・
ヘッドポジシ1す、5・・Φ磁気ヘッド部加熱装置、6
・・・加熱装置保持器8
FIG. 1 shows a magnetic disk, a magnetic head, and a magnetic head part heating device and heating system according to an embodiment of the present invention when the magnetic disk device Iζ is in a stopped state. 2 is a plan view showing a device holding device and a head position; FIG. 2 is a plan view corresponding to FIG. 1 in which the magnetic disk device is in use; FIG. 3 is a plan view corresponding to FIG. FIG. 1...-magnetic disk, 1'...C8S zone, 2...
・O magnetic head, 3・・Φ movable arm assembly, 4・6・
Head position 1, 5... Φ magnetic head heating device, 6
...Heating device holder 8

Claims (1)

【特許請求の範囲】[Claims] 少なくとも1箇の磁気ディスクを有し、該磁気ディスク
の表面上に僅少なりリアランスを保持し該表面に沿って
移動自在に可動腕アセンブリによって支持される少なく
とも1箇の磁気ヘッドを有し、該可動腕アセンブリはへ
ッドポジシ碧すによって駆動される磁気ディスク装置に
おいて、該磁気ディスク装置が運転を停止し前゛記磁気
ヘッドが前記磁気ディスクの表面上に接触して停止して
支持されそいるときは前記磁気ヘッドとその近傍の前記
磁気ディスクの表面に対向して支持配設され、前記磁気
ディスク装置が運転されており前記磁気ディスクが回転
を継続しているときは前記磁気ディスクと対向しない位
置に移動可能に支持配設される磁気ヘッド部加熱装置を
有することを特徴とする、磁気ディスク装置。
at least one magnetic disk; at least one magnetic head supported by a movable arm assembly for movement along the surface of the magnetic disk; In a magnetic disk drive driven by a head position, the arm assembly is used when the magnetic disk drive stops operating and the magnetic head comes into contact with the surface of the magnetic disk and stops and is about to be supported. The magnetic head is supported and disposed to face the surface of the magnetic disk near the magnetic head, and is located at a position not facing the magnetic disk when the magnetic disk device is in operation and the magnetic disk continues to rotate. A magnetic disk device comprising a magnetic head heating device that is movably supported and arranged.
JP12624581A 1981-08-12 1981-08-12 Magnetic disc device Pending JPS5829183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12624581A JPS5829183A (en) 1981-08-12 1981-08-12 Magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12624581A JPS5829183A (en) 1981-08-12 1981-08-12 Magnetic disc device

Publications (1)

Publication Number Publication Date
JPS5829183A true JPS5829183A (en) 1983-02-21

Family

ID=14930385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12624581A Pending JPS5829183A (en) 1981-08-12 1981-08-12 Magnetic disc device

Country Status (1)

Country Link
JP (1) JPS5829183A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095396A (en) * 1990-08-20 1992-03-10 Seagate Technology, Inc. Unitary E-block assembly for use in a disk drive
US5436776A (en) * 1990-04-24 1995-07-25 Fujitsu Limited Disk system having a slider which is continuously heated for preventing organic material buildup
US7136247B2 (en) 2003-09-30 2006-11-14 Hitachi Global Storage Technologies Netherlands B.V. Drive temperature self-adjustment for temperature-sensitive measurements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436776A (en) * 1990-04-24 1995-07-25 Fujitsu Limited Disk system having a slider which is continuously heated for preventing organic material buildup
US5095396A (en) * 1990-08-20 1992-03-10 Seagate Technology, Inc. Unitary E-block assembly for use in a disk drive
US7136247B2 (en) 2003-09-30 2006-11-14 Hitachi Global Storage Technologies Netherlands B.V. Drive temperature self-adjustment for temperature-sensitive measurements

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