JPS6355128B2 - - Google Patents
Info
- Publication number
- JPS6355128B2 JPS6355128B2 JP11614981A JP11614981A JPS6355128B2 JP S6355128 B2 JPS6355128 B2 JP S6355128B2 JP 11614981 A JP11614981 A JP 11614981A JP 11614981 A JP11614981 A JP 11614981A JP S6355128 B2 JPS6355128 B2 JP S6355128B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- magnetic disk
- disk
- information
- data head
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease 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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/11—Shielding of head against electric or magnetic fields
- G11B5/115—Shielding devices arranged between heads or windings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
【発明の詳細な説明】
この発明は、電子計算機、周辺端末機器等に用
いられる磁気デイスク装置にに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic disk device used in electronic computers, peripheral terminal equipment, and the like.
従来、この種の装置として第１図に示すものが
あつた。図において、１は記憶円板（磁気デイス
ク）で、情報を記録するものである。２は駆動モ
ータで、モータ軸３に固定された磁気デイスク１
を回転駆動する。４は位置読み出しヘツド（サー
ボヘツド）で、磁気デイスク１から位置情報を読
み出すものである。５は情報記録再生ヘツド（デ
ータヘツド）で、磁気デイスク１に情報を記録ま
たは磁気デイスク１から情報を再生するものであ
る。６はキヤリツジで、サーボヘツド４とデータ
ヘツド５を図示していない駆動機構で移動させる
ものである。７はベースで、駆動モータ２やその
他図示していない駆動機構を固定するものであ
る。 Conventionally, there has been a device of this type as shown in FIG. In the figure, 1 is a storage disk (magnetic disk) that records information. 2 is a drive motor, and a magnetic disk 1 is fixed to the motor shaft 3.
drive the rotation. Reference numeral 4 denotes a position reading head (servo head) for reading position information from the magnetic disk 1. Reference numeral 5 denotes an information recording/reproducing head (data head) for recording information on the magnetic disk 1 or reproducing information from the magnetic disk 1. A carriage 6 moves the servo head 4 and data head 5 by a drive mechanism (not shown). Reference numeral 7 denotes a base on which the drive motor 2 and other drive mechanisms (not shown) are fixed.
次に、動作について説明する。 Next, the operation will be explained.
駆動モータ２によつて磁気デイスク１が回転す
ると、磁気デイスク１の面上に粘性空気流が発生
し、サーボヘツド４とデータヘツド５に浮力を与
え、サーボヘツド４とデータヘツド５の板ばねの
加圧力と平衝して微小な空隙を保ちながら、サー
ボヘツド４およびデータヘツド５は、磁気デイス
ク１の面上に浮上し、電子計算機から命令が受け
取られると、サーボヘツド４を介して磁気デイス
ク１の位置を読み出しながら、図示していない駆
動機構によつてキヤリツジ６が移動位置決めされ
た後、データヘツド５を介して磁気デイスク１に
情報を記録または磁気デイスク１から情報を再生
する。 When the magnetic disk 1 is rotated by the drive motor 2, a viscous air flow is generated on the surface of the magnetic disk 1, giving buoyancy to the servo head 4 and the data head 5, and the pressurizing force of the leaf springs of the servo head 4 and the data head 5 is increased. The servo head 4 and the data head 5 float above the surface of the magnetic disk 1 while maintaining a small air gap.When a command is received from the computer, the servo head 4 and the data head 5 adjust the position of the magnetic disk 1 via the servo head 4. While reading, the carriage 6 is moved and positioned by a drive mechanism (not shown), and then information is recorded on or reproduced from the magnetic disk 1 via the data head 5.
従来の磁気デイスク装置は以上のように構成さ
れているので、データヘツド５を介して情報を記
録するときに、記録電流によつて発生する漏洩磁
界が磁気デイスク１の最外周端付近を回り込んで
サーボヘツド４に雑音となつて混入し、サーボヘ
ツド４から読み出される位置情報が誤り信号にな
つたり、信号雑音比が低下したりして、データヘ
ツド５に位置ずれを起し、情報の記録または再生
にミスを生ずる欠点があつた。 Since the conventional magnetic disk device is configured as described above, when information is recorded via the data head 5, the leakage magnetic field generated by the recording current wraps around the outermost edge of the magnetic disk 1. The positional information read from the servo head 4 becomes an error signal or the signal-to-noise ratio decreases, causing a positional shift in the data head 5, which prevents information from being recorded or reproduced. There was a drawback that caused mistakes.
この発明は、上記のような従来のものの欠点を
除去するためになされたもので、サーボヘツドと
データヘツドの間に、磁気デイスクの最外周端に
隣接するように導電体または磁性体からなる円板
シールドを設けることにより、データヘツドから
発生する漏洩磁界がサーボヘツドに回り込む磁路
を遮蔽するようにして、上記従来の欠点を除去し
た装置を提供することを目的としている。以下、
この発明の一実施列を第２図、第３図によつて説
明する。 This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and includes a disc made of a conductive or magnetic material between the servo head and the data head adjacent to the outermost edge of the magnetic disk. It is an object of the present invention to provide a device which eliminates the above-mentioned drawbacks of the conventional device by providing a shield so as to shield the magnetic path through which the leakage magnetic field generated from the data head wraps around to the servo head. below,
One embodiment of this invention will be explained with reference to FIGS. 2 and 3.
第２図、第３図において、１〜７は第１図と同
じものである。８は円板シールドで、導電体また
は磁性体からなり、サーボヘツド４とデータヘツ
ド５の間に、磁気デイスク１と同一平面内に、か
つ磁気デイスク１の最外周端に隣接するようにベ
ース７に取り付けられて配置される。円板シール
ド８は、サーボヘツド４とデータヘツド５とキヤ
リツジ６の移動に対しては、ぶつからないように
なつている。 In FIGS. 2 and 3, numerals 1 to 7 are the same as in FIG. 1. Reference numeral 8 denotes a disk shield, which is made of a conductive or magnetic material and is attached to the base 7 between the servo head 4 and the data head 5, on the same plane as the magnetic disk 1, and adjacent to the outermost edge of the magnetic disk 1. installed and placed. The disc shield 8 is designed so that it will not collide with the movement of the servo head 4, data head 5, and carriage 6.
次に、動作について説明する。 Next, the operation will be explained.
データヘツド５に記録電流が流れると、データ
ヘツド５から発生する漏洩磁界が、円板シールド
８によつて遮蔽されるために、サーボヘツド４に
回り込んで混入したり、雑音になつたりしない。
したがつて、データヘツド５が位置ずれのない状
態で、情報が正しく記録または再生される。な
お、他の動作は、従来の装置と同様に行われる。 When a recording current flows through the data head 5, the leakage magnetic field generated from the data head 5 is shielded by the disk shield 8, so that it does not enter the servo head 4 and become noise.
Therefore, information can be recorded or reproduced correctly without any positional deviation of the data head 5. Note that other operations are performed similarly to conventional devices.
なお、上記実施例では磁気デイスク装置につい
て説明したが、この発明は、録音装置、録画装置
等他の装置にも広く適用できることはいうまでも
ない。また、キヤリツジ６の駆動を直線的に行つ
ているが、これは回転させても同じである。さら
に、円板シールド８を磁気デイスク１と同一平面
内に設けたが、これは少しずらしたり、磁気デイ
スク１と重ねたり、磁気デイスク１をはさんだり
して設けても、上記実施例と同様の効果を奏す
る。 Although the above embodiments have been described with respect to a magnetic disk device, it goes without saying that the present invention can be widely applied to other devices such as recording devices and recording devices. Furthermore, although the carriage 6 is driven linearly, it is the same even if it is rotated. Further, although the disk shield 8 is provided in the same plane as the magnetic disk 1, it may be provided slightly offset, overlapping the magnetic disk 1, or sandwiching the magnetic disk 1 in the same manner as in the above embodiment. It has the effect of
以上説明したように、この発明は位置読み出し
ヘツドと情報記録再生ヘツドの間に、前記記憶円
板の最外周端に隣接するように導電体または磁性
体からなる円板シールドを設けたので、情報記録
再生ヘツドから位置読み出しヘツドの漏洩磁界を
遮蔽し、情報を正しく記録または再生できる効果
がある。 As explained above, in the present invention, a disk shield made of a conductive or magnetic material is provided between the position reading head and the information recording/reproducing head so as to be adjacent to the outermost edge of the storage disk. This has the effect of shielding the leakage magnetic field from the position reading head from the recording/reproducing head, allowing information to be recorded or reproduced correctly.
第１図は従来の磁気デイスク装置を示す側面
図、第２図、第３図はこの発明の一実施例を示す
磁気デイスク装置の側面図および平面図である。
図中、１は磁気デイスク、４はサーボヘツド、
５はデータヘツド、６はキヤリツジ、８は円板シ
ールドである。なお、図中の同一符号は同一また
は相当部分を示す。
FIG. 1 is a side view showing a conventional magnetic disk device, and FIGS. 2 and 3 are a side view and a plan view of a magnetic disk device showing an embodiment of the present invention. In the figure, 1 is a magnetic disk, 4 is a servo head,
5 is a data head, 6 is a carriage, and 8 is a disk shield. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
記録再生ヘツドの間の前記記憶円板の最外周端に
隣接するように導電体または磁性体からなる円板
シールドを設けたことを特徴とする磁気デイスク
装置。1. A magnetic disk characterized in that a disk shield made of a conductive or magnetic material is provided adjacent to the outermost peripheral end of the storage disk between the read head and the information recording/reproduction head that sandwich the storage disk. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11614981A JPS5817515A (en) | 1981-07-24 | 1981-07-24 | Magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11614981A JPS5817515A (en) | 1981-07-24 | 1981-07-24 | Magnetic disk device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5817515A JPS5817515A (en) | 1983-02-01 |
| JPS6355128B2 true JPS6355128B2 (en) | 1988-11-01 |
Family
ID=14679962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11614981A Granted JPS5817515A (en) | 1981-07-24 | 1981-07-24 | Magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5817515A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60111318A (en) * | 1983-11-21 | 1985-06-17 | Fujitsu Ltd | Magnetic disc device |
| JPS63155419A (en) * | 1986-12-18 | 1988-06-28 | Fujitsu Ltd | Shield structure for head of disk device |
| KR920003502B1 (en) * | 1987-03-18 | 1992-05-01 | 후지쓰 가부시끼가이샤 | Shield servo magnetic head electro magnetic shield structure |
-
1981
- 1981-07-24 JP JP11614981A patent/JPS5817515A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5817515A (en) | 1983-02-01 |
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