JPH01211207A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH01211207A JPH01211207A JP3559188A JP3559188A JPH01211207A JP H01211207 A JPH01211207 A JP H01211207A JP 3559188 A JP3559188 A JP 3559188A JP 3559188 A JP3559188 A JP 3559188A JP H01211207 A JPH01211207 A JP H01211207A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- noise
- core
- ferrite
- recording
- 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
- 238000004804 winding Methods 0.000 claims abstract description 32
- 239000000696 magnetic material Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 3
- 238000005339 levitation Methods 0.000 claims description 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 20
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気ヘッドに関し特に、サーボヘッドの構造に
間する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head, and particularly to the structure of a servo head.
従来のサーボ用磁気ヘッドは、非磁性体よりなるスライ
ダに再生用コアをガラスにて接着固定し、磁気記録媒体
と対向する面を所定のギヤツブデプス寸法迄研削並びに
、ラップ加工して作られるコンポジットスライダの再生
コアに巻線を施し、ジンバルスプリングを接着した、い
わゆるヘッド。Conventional servo magnetic heads are composite sliders, in which a reproducing core is adhesively fixed with glass to a slider made of a non-magnetic material, and the surface facing the magnetic recording medium is ground and lapped to a predetermined gear depth dimension. A so-called head made by winding a recycled core and gluing a gimbal spring.
ジンバル組立体を装置に実装して再生動作を行っている
。A gimbal assembly is mounted on the device to perform playback operations.
上述した従来の構造のヘッド、ジンバル組立体を装置に
実装して使用する場合に、磁気記録媒体の両面を使用す
る関係上、情報の記録・再生用磁気ヘッドが背中合せに
設置されるため、記録・再生用磁気ヘッドで記録すると
、サーボヘッドにノイズが誘発されサーボ情報を誤検出
するという大 −きな欠点があった。When the head and gimbal assembly of the conventional structure described above is mounted and used in a device, since both sides of the magnetic recording medium are used, the magnetic heads for recording and reproducing information are installed back-to-back. - When recording with a reproducing magnetic head, there was a major drawback in that noise was induced in the servo head, causing erroneous detection of servo information.
本発明の目的は上記欠点を解消した磁気ヘッドを提供す
ることにある。An object of the present invention is to provide a magnetic head that eliminates the above-mentioned drawbacks.
上記目的を達成するため、本発明の磁気ヘッドは一非磁
性体よりなるスライダの浮揚力を発生させる２本のレー
ルの一方のレールの空気流出端に、空隙を有し、磁性体
よりなる記録再生用コアを埋込んだコンポジットスライ
ダにおいて、前記記録・再生用コアの近傍に埋込んだ磁
性体よりなるブロックを有し、前記記録・再生用コアお
よび前記ブロックに巻線を施し、前記記録・再生用コア
の巻線と前記ブロックの巻線とを各々の巻線の巻方向が
逆になるよう両巻線を結線したものである。In order to achieve the above object, the magnetic head of the present invention has a gap at the air outflow end of one of two rails that generate a levitation force for a slider made of a non-magnetic material, and a magnetic head made of a magnetic material. A composite slider in which a reproducing core is embedded has a block made of a magnetic material embedded in the vicinity of the recording/reproducing core, the recording/reproducing core and the block are wound, and the recording/reproducing core is wound. The windings of the reproducing core and the windings of the block are connected so that the winding directions of each winding are opposite to each other.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
図において、セラミックよりなるスライダ１の浮揚力を
発生させる２本のレール２ａ、２ｂの一方の空気流出端
にフェライトコア３が埋込まれている。このフェライト
コア３には記録・再生空隙４が設けられている。一方、
他のレールの空気流出端にはフェライトブロック５が埋
込まれている。In the figure, a ferrite core 3 is embedded in one air outflow end of two rails 2a and 2b that generate a buoyancy force for a slider 1 made of ceramic. This ferrite core 3 is provided with a recording/reproducing gap 4. on the other hand,
A ferrite block 5 is embedded in the air outflow end of the other rail.
さらに、フェライトコア３に巻線７を施したリード線６
の一方の端をそのままフェライトブロック５に巻き付け
、巻方向がフェライトコア３に対する巻方向と逆となる
ように同−回数巻いである。Furthermore, a lead wire 6 having a winding 7 applied to the ferrite core 3 is provided.
One end of the wire is wound around the ferrite block 5 as it is, and the winding direction is the same number of times as the winding direction is opposite to the winding direction around the ferrite core 3.
他の記録・再生用ヘッドにて記録した場合にこのヘッド
に漏洩してくるノイズ波形は第２図（ａ）。FIG. 2(a) shows the noise waveform leaking to this head when recording is performed using another recording/reproducing head.
（ｂ）に示すようにフェライトコアの巻線７と、フェラ
イトブロック５の巻線８とは巻方向が逆のため、正負逆
波形となり、合成されたノイズ波形は打消され、（Ｃ）
のように、平坦なノイズなしの状態となる。またサーボ
情報の再生は、磁気回路を形成しているフェライトコア
のみしか行なわれず、正確な情報が得られる。尚本実施
例ではフェライトブロックを他のレールの空気流出端に
埋込んだ構造としたが、巻線が可能な構造にすれば他の
構造でも良いが、ノイズをキャンセルさせるためには再
生用コアに近い方がその効果は大きい。As shown in (b), since the winding direction of the ferrite core winding 7 and the winding 8 of the ferrite block 5 are opposite, the positive and negative waveforms are reversed, and the combined noise waveform is canceled out, and (C)
This results in a flat, noise-free state. Furthermore, since servo information is reproduced only by the ferrite core forming the magnetic circuit, accurate information can be obtained. In this example, the ferrite block was embedded in the air outflow end of the other rail, but other structures may be used as long as the structure allows winding, but in order to cancel noise, the regeneration core The closer it is to the larger the effect.
以上説明したように本発明は、再生用コアに巻線を施す
とともにその近傍に埋込まれたフェライトブロックに巻
線を再生用コアの巻線方向とは逆向きに同−回数巻くこ
とにより、外部からのノイズをキャンセルし、ノイズの
ない正確なサーボ情報を得ることができる効果がある。As explained above, the present invention provides the following advantages: by winding the reproducing core and winding the same number of times around the ferrite block embedded in the vicinity of the reproducing core in the opposite direction to the winding direction of the reproducing core. This has the effect of canceling external noise and obtaining noise-free and accurate servo information.
第１図は本発明の一実施例を示す斜視図、第２図（ａ）
は記録・再生用ヘッドの記録時に漏洩してくるコア巻線
部のノイズの波形例、（ｂ）は巻線ブロックのノイズの
波形、（Ｃ）は合成波形を示す図である。
１・・・スライダ ２ａ、２ｂ・・・レール
３・・・フェライトコア ４・・・記録・再生空隙
５・・・フェライトブロック ６・・・リード線７・・
・巻線
８・・・フェライトブロックの巻線
特許出願人 日本電気株式会社
代 理 人 弁理士 菅 野 中ｆ“
ｔ。Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2(a)
FIG. 6 is a diagram showing an example of the waveform of noise from the core winding portion leaking during recording of the recording/reproducing head, FIG. 1... Slider 2a, 2b... Rail 3... Ferrite core 4... Recording/reproduction gap 5... Ferrite block 6... Lead wire 7...
・Winding 8...Winding of ferrite block Patent applicant NEC Corporation Representative Patent attorney Naka Kanno f"t.
Claims (1)
本のレールの一方のレールの空気流出端に、空隙を有し
、磁性体よりなる記録再生用コアを埋込んだコンポジッ
トスライダにおいて、前記記録・再生用コアの近傍に埋
込んだ磁性体よりなるブロックを有し、前記記録・再生
用コアおよび前記ブロックに巻線を施し、前記記録・再
生用コアの巻線と前記ブロックの巻線とを各々の巻線の
巻方向が逆になるよう両巻線を結線したことを特徴とす
る磁気ヘッド。1. Generate levitation force for the slider made of non-magnetic material 2.
In a composite slider in which a recording/reproducing core made of a magnetic material is embedded in an air gap at the air outflow end of one of the book rails, the slider is made of a magnetic material embedded near the recording/reproducing core. a block, the recording/reproducing core and the block are wound with wires, and the winding of the recording/reproducing core and the winding of the block are crossed such that the winding directions of the respective windings are opposite to each other. A magnetic head characterized by wire-connected windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3559188A JPH01211207A (en) | 1988-02-18 | 1988-02-18 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3559188A JPH01211207A (en) | 1988-02-18 | 1988-02-18 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01211207A true JPH01211207A (en) | 1989-08-24 |
Family
ID=12446034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3559188A Pending JPH01211207A (en) | 1988-02-18 | 1988-02-18 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01211207A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0330398A2 (en) * | 1988-02-24 | 1989-08-30 | Seagate Technology International | Magnetic read head |
| EP0546312A1 (en) * | 1991-12-10 | 1993-06-16 | Hewlett-Packard Company | Cancellation of the effects of stray magnetic fields on magnetic heads in a disc drive |
| US5461528A (en) * | 1990-08-27 | 1995-10-24 | Seagate Technology, Inc. | Self bucking servo transducer |
| US5471354A (en) * | 1990-08-27 | 1995-11-28 | Seagate Technology, Inc. | Servo head with close servo transducer placement for improved passive noise cancellation |
-
1988
- 1988-02-18 JP JP3559188A patent/JPH01211207A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0330398A2 (en) * | 1988-02-24 | 1989-08-30 | Seagate Technology International | Magnetic read head |
| EP0330398A3 (en) * | 1988-02-24 | 1991-07-24 | Seagate Technology International | Magnetic read head |
| US5461528A (en) * | 1990-08-27 | 1995-10-24 | Seagate Technology, Inc. | Self bucking servo transducer |
| US5471354A (en) * | 1990-08-27 | 1995-11-28 | Seagate Technology, Inc. | Servo head with close servo transducer placement for improved passive noise cancellation |
| EP0546312A1 (en) * | 1991-12-10 | 1993-06-16 | Hewlett-Packard Company | Cancellation of the effects of stray magnetic fields on magnetic heads in a disc drive |
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