JPS6161191B2 - - Google Patents

Info

Publication number
JPS6161191B2
JPS6161191B2 JP54015827A JP1582779A JPS6161191B2 JP S6161191 B2 JPS6161191 B2 JP S6161191B2 JP 54015827 A JP54015827 A JP 54015827A JP 1582779 A JP1582779 A JP 1582779A JP S6161191 B2 JPS6161191 B2 JP S6161191B2
Authority
JP
Japan
Prior art keywords
magnetic disk
magnetic
magnetic head
group
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.)
Expired
Application number
JP54015827A
Other languages
Japanese (ja)
Other versions
JPS55108964A (en
Inventor
Tokikazu Suenaga
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.)
NEC Corp
Original Assignee
Nippon Electric Co 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP1582779A priority Critical patent/JPS55108964A/en
Publication of JPS55108964A publication Critical patent/JPS55108964A/en
Publication of JPS6161191B2 publication Critical patent/JPS6161191B2/ja
Granted legal-status Critical Current

Links

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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks

Description

【発明の詳細な説明】 本発明は磁気デイスク装置、さらに詳しくいえ
ば磁気ヘツドがコンタクトスタートストツプ形式
の磁気デイスク装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk device, and more particularly to a magnetic disk device in which the magnetic head is of a contact start/stop type.

磁気デイスク装置には従来から磁気デイスクパ
ツクを装置に対し簡単に交換できるところの、磁
気デイスクパツク方式の装置があつた。この装置
は磁気デイスクパツクと装置との互換性を確保す
る必要からデイスク板の半径方向の記録密度であ
るトラツク密度が上げられないため記録容量に限
度があつた。そのため磁気デイスクを交換しない
装置が用いられている。第１図はこの磁気デイス
ク装置の概略を示す正面図である。この装置は磁
気ヘツドに浮動ヘツドを採用している。磁気ヘツ
ド群１はスピンドル７によつて磁気デイスク群２
が回転している場合、微小のすき間で浮上してい
るが、磁気デイスク群２が停止している場合、磁
気ヘツド群１は前記磁気デイスク群２と接触して
いる。この状態で長い時間放置すると磁気デイス
クと磁気ヘツドの表面の平面度が良いため両者が
密着して離れにくくなる欠点がある。 Conventionally, magnetic disk devices have been available using a magnetic disk pack type, in which a magnetic disk pack can be easily replaced with another device. This device had a limited recording capacity because the track density, which is the recording density in the radial direction of the disk plate, could not be increased because of the need to ensure compatibility between the magnetic disk pack and the device. For this reason, devices are used in which magnetic disks are not replaced. FIG. 1 is a front view schematically showing this magnetic disk device. This device uses a floating magnetic head. The magnetic head group 1 is connected to the magnetic disk group 2 by the spindle 7.
When the magnetic disk group 2 is rotating, it is floating with a minute gap, but when the magnetic disk group 2 is stopped, the magnetic head group 1 is in contact with the magnetic disk group 2. If left in this state for a long time, the flatness of the surfaces of the magnetic disk and magnetic head is good, so there is a drawback that they will come into close contact with each other and become difficult to separate.

さらに両者が離れにくいため、磁気デイスク群
２を通常の使用で回転させるとジンバルスプリン
グ２３を破損する欠点があつた。 Furthermore, since the two are difficult to separate, there is a drawback that the gimbal spring 23 is damaged when the magnetic disk group 2 is rotated in normal use.

本発明の目的は前述した欠点を解決することが
できる磁気デイスク装置を提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic disk device that can solve the above-mentioned drawbacks.

前記目的を達成するために、本発明による磁気
デイスク装置は、磁気ヘツドがコンタクトスター
トストツプ形式の磁気デイスク装置において、振
動電流を発生する信号源を設け、磁気デイスクの
回転起動時に位置決め制御機構のボイスコイルに
前記振動電流を印加することにより、前記磁気ヘ
ツドを振動させるように構成されている。 In order to achieve the above object, a magnetic disk device according to the present invention is a magnetic disk device in which the magnetic head is of a contact start/stop type, and is provided with a signal source that generates an oscillating current to control the positioning control mechanism when starting rotation of the magnetic disk. The magnetic head is configured to vibrate by applying the oscillating current to the voice coil.

上記構成によれば磁気ヘツドとデイスクの密着
現象を防止でき、本発明の目的を完全に達成する
ことができる。 According to the above structure, the phenomenon of close contact between the magnetic head and the disk can be prevented, and the object of the present invention can be completely achieved.

以下、図面を参照して、本発明をさらに詳しく
説明する。 Hereinafter, the present invention will be explained in more detail with reference to the drawings.

まず第１図を参照して装置の構成を説明する。
第１図において、磁気ヘツド群１が磁気ヘツドア
ーム群３を介してキヤリツジ４に取付けられてい
る。またボイスコイル５も前記キヤリツジ４に取
付けられており、前記ボイスコイルに電流を流す
事によつて発生する磁力と永久磁石６の磁力によ
つて前記キヤリツジ４は磁気デイスク２の半径方
向に移動する事ができる。キヤリツジの移動に対
する位置、速度信号はサーボデイスク９とサーボ
ヘツド８によつて、制御回路に送る事ができる。
次に制御回路について第２図を用いて説明する。
キヤリツジ４の移動は制御モード切換回路１０よ
り出されるパワーアンプドライブ信号１６をパワ
ーアンプ１１で増幅し、ボイスコイルドライブ電
流１７で行う。キヤリツジの速度および位置情報
を含むサーボヘツド出力信号１８は速度検出回路
１３と位置検出回路１４に送られそれぞれ速度信
号１９、位置信号２０として制御モード切換回路
１０に送られる。制御モード切換回路１０ではモ
ード切換信号１５により速度の設定、モードの切
換等を行つている。 First, the configuration of the apparatus will be explained with reference to FIG.
In FIG. 1, a magnetic head group 1 is attached to a carriage 4 via a magnetic head arm group 3. As shown in FIG. A voice coil 5 is also attached to the carriage 4, and the carriage 4 is moved in the radial direction of the magnetic disk 2 by the magnetic force generated by passing a current through the voice coil and the magnetic force of the permanent magnet 6. I can do things. Position and speed signals for carriage movement can be sent to a control circuit by a servo disk 9 and a servo head 8.
Next, the control circuit will be explained using FIG. 2.
The carriage 4 is moved by a power amplifier drive signal 16 outputted from a control mode switching circuit 10, which is amplified by a power amplifier 11, and by a voice coil drive current 17. A servo head output signal 18 containing carriage speed and position information is sent to a speed detection circuit 13 and a position detection circuit 14, and is sent to a control mode switching circuit 10 as a speed signal 19 and a position signal 20, respectively. The control mode switching circuit 10 uses a mode switching signal 15 to set the speed, switch modes, etc.

本発明による装置は、ホワイトノイズを発生す
る回路を設け、上記制御回路にノイズを印加する
ようにしてある。第３図がこの構成を示す位置決
め制御ブロツク図で、ホワイトノイズ発生回路１
０からのホワイトノイズ２２はまず、制御モード
切換回路１０に挿入される。ホワイトノイズを入
れるタイミングはモード切換信号１５によつて必
要とする時に行う事ができる。前記ホワイトノイ
ズはパワーアンプ１１を経てボイスコイルに供給
される。これによりキヤリツジ４は振動し、この
振動は磁気ヘツドアーム３、ジンバルスプリング
２３を介して磁気ヘツド１に伝えられる。その結
果、磁気ヘツド１が磁気デイスク２に対し相対的
に微小量振動し両者の密着現象を取り除く事がで
きる。 The device according to the present invention is provided with a circuit that generates white noise, and is configured to apply the noise to the control circuit. Figure 3 is a positioning control block diagram showing this configuration.
The white noise 22 from 0 is first inserted into the control mode switching circuit 10. The timing for adding white noise can be adjusted according to the mode switching signal 15 when necessary. The white noise is supplied to the voice coil via the power amplifier 11. This causes the carriage 4 to vibrate, and this vibration is transmitted to the magnetic head 1 via the magnetic head arm 3 and gimbal spring 23. As a result, the magnetic head 1 vibrates by a small amount relative to the magnetic disk 2, thereby eliminating the phenomenon of close contact between the two.

本発明は以上説明したように、磁気ヘツドに振
動を与える事により磁気ヘツドと磁気デイスクの
密着現象を取り除く効果がある。 As explained above, the present invention has the effect of eliminating the phenomenon of close contact between the magnetic head and the magnetic disk by applying vibration to the magnetic head.

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

第１図は磁気デイスク装置の正面図、第２図は
磁気デイスク装置の位置決め制御ブロツク図、第
３図は本発明による磁気デイスク装置の一実施例
の位置決め制御ブロツク図である。 １……磁気ヘツド群、２……磁気デイスク群、
３……磁気ヘツドアーム群、４……キヤリツジ、
５……ボイスコイル、６……永久磁石、７……ス
ピンドル、８……サーボヘツド、９……サーボデ
イスク、１０……制御モード切換回路、１１……
パワーアンプ、１２……位置決め機構、１３……
速度検出回路、１４……位置検出回路、１５……
モード切換信号、１６……パワーアンプドライブ
信号、１７……ボイスコイルドライブ電流、１８
……サーボヘツド出力信号、１９……速度信号、
２０……位置信号、２１……ホワイトノイズ発生
回路、２２……ホワイトノイズ、２３……ジンバ
ルスプリング。 FIG. 1 is a front view of a magnetic disk device, FIG. 2 is a positioning control block diagram of the magnetic disk device, and FIG. 3 is a positioning control block diagram of an embodiment of the magnetic disk device according to the present invention. 1...Magnetic head group, 2...Magnetic disk group,
3... Magnetic head arm group, 4... Carriage,
5... Voice coil, 6... Permanent magnet, 7... Spindle, 8... Servo head, 9... Servo disk, 10... Control mode switching circuit, 11...
Power amplifier, 12...Positioning mechanism, 13...
Speed detection circuit, 14...Position detection circuit, 15...
Mode switching signal, 16...Power amplifier drive signal, 17...Voice coil drive current, 18
... Servo head output signal, 19 ... Speed signal,
20...Position signal, 21...White noise generation circuit, 22...White noise, 23...Gimbal spring.

Claims (1)

【特許請求の範囲】[Claims] １ 磁気ヘツドがコンタクトスタートストツプ形
式の磁気デイスク装置において、振動電流を発生
する信号源を設け、磁気デイスクの回転起動時に
位置決め制御機構のボイスコイルに前記振動電流
を印加することにより、前記磁気ヘツドを振動さ
せるように構成したことを特徴とする磁気デイス
ク装置。1. In a magnetic disk device in which the magnetic head is of the contact start/stop type, a signal source that generates an oscillating current is provided, and the oscillating current is applied to the voice coil of the positioning control mechanism when the magnetic disk starts rotating. A magnetic disk device characterized in that it is configured to vibrate.
JP1582779A 1979-02-13 1979-02-13 Magnetic disc device Granted JPS55108964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1582779A JPS55108964A (en) 1979-02-13 1979-02-13 Magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1582779A JPS55108964A (en) 1979-02-13 1979-02-13 Magnetic disc device

Publications (2)

Publication Number Publication Date
JPS55108964A JPS55108964A (en) 1980-08-21
JPS6161191B2 true JPS6161191B2 (en) 1986-12-24

Family

ID=11899673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1582779A Granted JPS55108964A (en) 1979-02-13 1979-02-13 Magnetic disc device

Country Status (1)

Country Link
JP (1) JPS55108964A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01301085A (en) * 1988-05-30 1989-12-05 Toshiba Corp Manipulator controller

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656070U (en) * 1979-10-01 1981-05-15
JPS57127968A (en) * 1981-01-28 1982-08-09 Hitachi Ltd Magnetic disc storage device
JPS581858A (en) * 1981-06-25 1983-01-07 Fujitsu Ltd Magnetic disk device
US4530021A (en) * 1982-11-26 1985-07-16 International Business Machines Corporation Micromotion release of heads from lubricated magnetic disks
US4589036A (en) * 1984-12-03 1986-05-13 International Business Machines Corporation Apparatus and method for instrumented radial translation of a read/write transducer at start-up of a rotating disk file
JPH071617B2 (en) * 1986-06-30 1995-01-11 株式会社東芝 Magnetic disk device and magnetic head control method for magnetic disk device
JPH02156466A (en) * 1988-12-08 1990-06-15 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPH08339676A (en) * 1995-06-14 1996-12-24 Hitachi Ltd Magnetic disk unit
AU2003210457A1 (en) * 2002-01-07 2003-07-24 Seagate Technology Llc Head-disk stiction reduction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5283210A (en) * 1975-12-30 1977-07-12 Fujitsu Ltd Magnetic disc driving method
JPS52145013A (en) * 1976-05-27 1977-12-02 Nippon Telegr & Teleph Corp <Ntt> Magnetic disk device
JPS5484712A (en) * 1977-12-19 1979-07-05 Nippon Telegr & Teleph Corp <Ntt> Magnetic disc apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5283210A (en) * 1975-12-30 1977-07-12 Fujitsu Ltd Magnetic disc driving method
JPS52145013A (en) * 1976-05-27 1977-12-02 Nippon Telegr & Teleph Corp <Ntt> Magnetic disk device
JPS5484712A (en) * 1977-12-19 1979-07-05 Nippon Telegr & Teleph Corp <Ntt> Magnetic disc apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01301085A (en) * 1988-05-30 1989-12-05 Toshiba Corp Manipulator controller

Also Published As

Publication number Publication date
JPS55108964A (en) 1980-08-21

Similar Documents

Publication Publication Date Title
US3883894A (en) Disk drive servo system
JPS6077072U (en) Disc player turntable rotation drive device
JPS6161191B2 (en)
KR960000829B1 (en) Device for controlling rotation of a magnet used in a
JPH0567380A (en) Magnetic head fixing mechanism for magnetic disk device
US4954909A (en) Data memorizing device which determines the movement of the recording head
JPH0512688A (en) Information recording and reproducing device
JPS5542372A (en) Magnetic recording and reproducing device
JP2722344B2 (en) Recording device
JPS58179655U (en) Disc-shaped recording medium playback device
JPS5817667U (en) Disc-shaped information recording medium reproducing device
JP3044821B2 (en) Rotating head device
JPS5914919Y2 (en) tape braking circuit
JPS6162285A (en) Magnetic recording reproducing device
JPS603910U (en) magnetic disk device
JPS6040028U (en) Information recording and reproducing device
JPH09138986A (en) Information recorder
JPS59125728U (en) magneto-optical recording device
JPS63184473U (en)
JPS609021U (en) Optical disk player lens drive circuit
JPH0821190B2 (en) Disk drive
JPH0361621U (en)
JPH01146352U (en)
JPS6442504U (en)
JPS592266A (en) Magnetic recording and reproducing device