JPS6334089Y2 - - Google Patents
Info
- Publication number
- JPS6334089Y2 JPS6334089Y2 JP1981057602U JP5760281U JPS6334089Y2 JP S6334089 Y2 JPS6334089 Y2 JP S6334089Y2 JP 1981057602 U JP1981057602 U JP 1981057602U JP 5760281 U JP5760281 U JP 5760281U JP S6334089 Y2 JPS6334089 Y2 JP S6334089Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic pole
- pole
- magnetic disk
- main
- 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
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000005415 magnetization Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
【考案の詳細な説明】
本考案は、垂直磁気記録再生方式の磁気デイス
ク装置に関するものである。[Detailed Description of the Invention] The present invention relates to a magnetic disk device using a perpendicular magnetic recording/reproducing method.
一般に、垂直磁気記録再生方式は高密度記録に
適しており、その応用として磁気デイスクやフロ
ツピーデイスク等の電子計算機の端末装置や民生
用のビデオシステム及びオーデイオ装置等へ利用
することにより、装置の小型化、高忠実度化が期
待されている。そして、斯る方式に用いられる垂
直型磁気ヘツドとしては、第１図に示すように補
助磁極に励磁コイルを巻装した補助磁極励磁型が
提案されている。即ち、１は磁性薄膜（例えば、
パーマロイ薄膜）からなる主磁極で、その先端が
記録媒体２（例えば、高周波スパツタ法により形
成されたCp−Cr薄膜で、面に垂直な方向に磁化容
易軸を有する）に対向して配されている。３は記
録媒体２を挟んで配された補助磁極（例えばフエ
ライト等の高透磁率磁性材からなる）で該補助磁
極３に巻装した励磁コイル４に信号電流を流して
前記主磁極１を補助磁極３側から励磁するように
なつている。従つて、斯る主磁極１の先端近傍に
発生する強い垂直磁界を記録媒体２に加えて記録
を行うようにしている。また再生時には、記録媒
体２により主磁極１が励磁され、これによつて更
に補助磁極３が励磁されて励磁コイル４の両端に
出力信号が得られる。そして、第２図は斯る垂直
型磁気ヘツドを用いた垂直磁気記録再生方式の磁
気デイスク装置の従来例である。即ち、５は面に
垂直な方向に磁化容易軸を有する磁気デイスク、
６は前記磁気デイスク５を回転駆動するモータ
ー、７，７′は前記磁気デイスク５をモーター６
の回転軸６′に固定するための固定具であり、前
記磁気デイスク５の記録再生領域外である中央部
を挟持固定するようになつている。そして、励磁
コイル４を施した補助磁極３と主磁極１を磁気デ
イスク５を挟んで対向させた構成となつており、
この場合補助磁極３と主磁極１は一定の間隔を保
持して矢印Ａ，A′にて示すように磁気デイスク
の半径方向に同時にトラツキングさせる必要があ
るため、その機構が複雑になつていた。 In general, the perpendicular magnetic recording/reproducing method is suitable for high-density recording, and its application to electronic computer terminal devices such as magnetic disks and floppy disks, as well as consumer video systems and audio devices, makes it possible to improve the performance of devices. There are expectations for miniaturization and higher fidelity. As a vertical magnetic head used in such a system, an auxiliary pole excitation type in which an excitation coil is wound around an auxiliary pole, as shown in FIG. 1, has been proposed. That is, 1 is a magnetic thin film (for example,
A main magnetic pole made of a permalloy thin film), with its tip facing the recording medium 2 (e.g., a C p -C r thin film formed by a high frequency sputtering method, with an axis of easy magnetization perpendicular to the surface). has been done. Reference numeral 3 denotes an auxiliary magnetic pole (made of a high-permeability magnetic material such as ferrite) disposed with the recording medium 2 in between; a signal current is passed through an excitation coil 4 wound around the auxiliary magnetic pole 3 to assist the main magnetic pole 1. It is designed to be excited from the magnetic pole 3 side. Therefore, recording is performed by applying a strong perpendicular magnetic field generated near the tip of the main magnetic pole 1 to the recording medium 2. Further, during reproduction, the main magnetic pole 1 is excited by the recording medium 2, which further excites the auxiliary magnetic pole 3, and output signals are obtained at both ends of the exciting coil 4. FIG. 2 shows a conventional example of a perpendicular magnetic recording/reproducing type magnetic disk device using such a perpendicular magnetic head. That is, 5 is a magnetic disk having an axis of easy magnetization in a direction perpendicular to the surface;
6 is a motor that rotationally drives the magnetic disk 5; 7 and 7' are motors 6 that rotate the magnetic disk 5;
This is a fixture for fixing to the rotating shaft 6' of the magnetic disk 5, and is designed to clamp and fix the central portion of the magnetic disk 5 outside the recording/reproducing area. The structure is such that an auxiliary magnetic pole 3 provided with an excitation coil 4 and a main magnetic pole 1 are opposed to each other with a magnetic disk 5 in between.
In this case, the auxiliary magnetic pole 3 and the main magnetic pole 1 must be kept at a constant distance and tracked simultaneously in the radial direction of the magnetic disk as shown by arrows A and A', making the mechanism complicated.
本考案は斯る点に鑑みなされたもので、以下そ
の一実施例を図面と共に説明する。尚、従来と同
一部品については同一図番を附すと共にその説明
を省略する。 The present invention has been devised in view of this point, and one embodiment thereof will be described below with reference to the drawings. Note that parts that are the same as those in the prior art will be given the same drawing numbers and their explanations will be omitted.
即ち、本考案は前記磁気デイスク５面に対向し
且つその半径方向に延在して（即ち、磁気デイス
ク５の半径方向の記録再生領域に対応するよう
に）短冊状の補助磁極１０を配すると共に、励磁
コイル１１が巻装された主磁極１２を第３図に示
す如く前記補助磁極１０に対向させた状態でその
半径方向に可動自在に配し、斯る主磁極１２のみ
を磁気デイスク５の半径方向にトラツキングさせ
ると共に、該主磁極の位置するトラツクのみを励
磁し垂直磁気記録を行なうように構成したもので
ある。 That is, in the present invention, a strip-shaped auxiliary magnetic pole 10 is arranged facing the surface of the magnetic disk 5 and extending in the radial direction thereof (that is, so as to correspond to the recording/reproducing area in the radial direction of the magnetic disk 5). At the same time, a main magnetic pole 12 around which an excitation coil 11 is wound is disposed so as to be movable in the radial direction while facing the auxiliary magnetic pole 10, as shown in FIG. The main magnetic pole is tracked in the radial direction, and only the track where the main pole is located is excited to perform perpendicular magnetic recording.
従つて、本考案に依れば、主磁極１２のみのト
ラツキング機構（例えば、リニアトラツキングア
ーム等に主磁極を取付ける）を設けるだけで良
く、装置全体の構造が簡単になると共に操作性の
向上も計ることが出来る。尚、本考案では記録時
における主磁極１２の磁気飽和を防ぐため、第４
図に示す如くフエライト等の高透磁率磁性材より
なる磁気飽和防止部材１３，１３′で主磁極１２
を挟み込み、これに励磁コイル１１を巻装してい
る。 Therefore, according to the present invention, it is only necessary to provide a tracking mechanism for the main magnetic pole 12 (for example, attaching the main magnetic pole to a linear tracking arm, etc.), which simplifies the overall structure of the device and improves operability. can also be measured. In addition, in the present invention, in order to prevent magnetic saturation of the main magnetic pole 12 during recording, the fourth
As shown in the figure, magnetic saturation prevention members 13 and 13' made of high magnetic permeability magnetic material such as ferrite
is sandwiched between them, and the excitation coil 11 is wound around this.
上述した如く本考案磁気デイスク装置に依れ
ば、面に垂直な方向に磁化容易軸を有し回転駆動
される磁気デイスクと、該磁気デイスク面に対向
し且つその半径方向に延在して配された磁性材ブ
ロツクからなる補助磁極と、前記磁気デイスクに
対して垂直な信号磁界を発生するべく該磁気デイ
スクを前記補助磁極と共に挾持してその半径方向
に可動自在に配された主磁極と、該主磁極に巻装
され記録時に信号電流が流される励磁コイルとよ
り成り、記録時に前記主磁極のみを磁気デイスク
の半径方向にトラツキングさせると共に、該主磁
極の位置するトラツクのみを励磁し垂直磁気記録
を行なうように構成したので、そのトラツキング
機構が簡潔になると共に操作性の向上も計ること
が出来る。また、本考案に依れば主磁極に励磁コ
イルを巻装する主磁極励磁型にしているので、斯
る主磁極を磁気デイスクの半径方向にトラツキン
グさせた際この主磁極の位置するトラツクのみを
励磁し記録することが出来、記録効率の極めて高
い磁気デイスク装置を提供することが出来る。 As described above, according to the magnetic disk device of the present invention, a magnetic disk having an axis of easy magnetization in a direction perpendicular to the surface and driven to rotate, and a magnetic disk disposed facing the surface of the magnetic disk and extending in the radial direction thereof. an auxiliary magnetic pole made of a block of magnetic material; a main magnetic pole that holds the magnetic disk together with the auxiliary magnetic pole and is movable in the radial direction to generate a signal magnetic field perpendicular to the magnetic disk; It consists of an excitation coil that is wound around the main magnetic pole and through which a signal current is passed during recording, and during recording, only the main magnetic pole is tracked in the radial direction of the magnetic disk, and only the track where the main magnetic pole is located is excited to perform perpendicular magnetism. Since it is configured to perform recording, the tracking mechanism can be simplified and the operability can be improved. Furthermore, according to the present invention, since the main pole excitation type is used in which the excitation coil is wound around the main pole, when the main pole is tracked in the radial direction of the magnetic disk, only the track where this main pole is located is tracked. It is possible to provide a magnetic disk device that is capable of excitation and recording and has extremely high recording efficiency.
第１図は垂直型磁気ヘツドの原理図、第２図は
斯る垂直型磁気ヘツドを用いた磁気デイスク装置
の従来例を示す図、第３図は本考案磁気デイスク
装置の一実施例を示す図、第４図はその要部拡大
図である。
５……磁気デイスク、６……モーター、１０…
…補助磁極、１１……励磁コイル、１２……主磁
極。
FIG. 1 is a diagram showing the principle of a vertical magnetic head, FIG. 2 is a diagram showing a conventional example of a magnetic disk device using such a vertical magnetic head, and FIG. 3 is a diagram showing an embodiment of the magnetic disk device of the present invention. 4 are enlarged views of the main parts. 5...Magnetic disk, 6...Motor, 10...
...Auxiliary magnetic pole, 11...Exciting coil, 12...Main magnetic pole.
Claims (1)
れる磁気デイスクと、該磁気デイスク面に対向し
且つその半径方向に延在して配された磁性材ブロ
ツクからなる補助磁極と、前記磁気デイスクに対
して垂直な信号磁界を発生するべく該磁気デイス
クを前記補助磁極と共に挾持してその半径方向に
可動自在に配された主磁極と、該主磁極に巻装さ
れ記録時に信号電流が流される励磁コイルとより
成り、記録時に前記主磁極のみを磁気デイスクの
半径方向にトラツキングさせると共に、該主磁極
の位置するトラツクのみを励磁し垂直磁気記録を
行なうように構成した事を特徴とする磁気デイス
ク装置。 a magnetic disk having an axis of easy magnetization perpendicular to the surface and driven to rotate; an auxiliary magnetic pole consisting of a block of magnetic material facing the magnetic disk surface and extending in the radial direction; A main magnetic pole is arranged to sandwich the magnetic disk together with the auxiliary magnetic pole and to be movable in the radial direction in order to generate a signal magnetic field perpendicular to the disk; The magnetic disk is characterized in that it is configured to track only the main magnetic pole in the radial direction of the magnetic disk during recording, and to excite only the track where the main magnetic pole is located to perform perpendicular magnetic recording. disk device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981057602U JPS6334089Y2 (en) | 1981-04-20 | 1981-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981057602U JPS6334089Y2 (en) | 1981-04-20 | 1981-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57168842U JPS57168842U (en) | 1982-10-23 |
| JPS6334089Y2 true JPS6334089Y2 (en) | 1988-09-09 |
Family
ID=29854068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981057602U Expired JPS6334089Y2 (en) | 1981-04-20 | 1981-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6334089Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5584015A (en) * | 1978-12-18 | 1980-06-24 | Toshiba Corp | Vertical magnetization recorder |
| JPS5616916A (en) * | 1979-07-17 | 1981-02-18 | Olympus Optical Co Ltd | Magnetic recording and reproducing unit |
-
1981
- 1981-04-20 JP JP1981057602U patent/JPS6334089Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5584015A (en) * | 1978-12-18 | 1980-06-24 | Toshiba Corp | Vertical magnetization recorder |
| JPS5616916A (en) * | 1979-07-17 | 1981-02-18 | Olympus Optical Co Ltd | Magnetic recording and reproducing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57168842U (en) | 1982-10-23 |
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