JPS631644B2 - - Google Patents
Info
- Publication number
- JPS631644B2 JPS631644B2 JP7531981A JP7531981A JPS631644B2 JP S631644 B2 JPS631644 B2 JP S631644B2 JP 7531981 A JP7531981 A JP 7531981A JP 7531981 A JP7531981 A JP 7531981A JP S631644 B2 JPS631644 B2 JP S631644B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- recording
- magnetic
- medium
- transverse
- 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
- 230000005415 magnetization Effects 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
【発明の詳細な説明】
本発明は高密度に記録し得るトランスバース記
録を記録再生しうる磁気ヘツドの構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a magnetic head capable of recording and reproducing transverse recording capable of high-density recording.
従来の磁気記録装置においては長手方向磁化方
式を採用しているが、記録密度が上がるにつれて
反磁界の影響が大となり、再生出力の低下ピーク
シフトの増大をまねくために、この欠点を補う方
式として長手方向と直角の方向に磁化するトラン
スバース記録方式がある。このトランスバース記
録においても記録された磁性媒体からの放出磁界
がトラツク端で磁化の方向に垂直な成分を有しか
なりトランスバース方向の再生効率を低下させて
いた。 Conventional magnetic recording devices use a longitudinal magnetization method, but as the recording density increases, the influence of the demagnetizing field increases, leading to a decrease in the reproduction output and an increase in peak shift. There is a transverse recording method that magnetizes in a direction perpendicular to the longitudinal direction. Even in this transverse recording, the emitted magnetic field from the recorded magnetic medium has a component perpendicular to the direction of magnetization at the track end, which considerably reduces the reproduction efficiency in the transverse direction.
本発明はトランスバース記録の磁化方向におけ
る垂直な成分を再生時に積極的に利用する磁気ヘ
ツドを提供するものである。 The present invention provides a magnetic head that actively utilizes the perpendicular component in the magnetization direction of transverse recording during reproduction.
本発明によれば記録媒体の面に平行で、媒体の
トラツク方向に垂直なモードで媒体を磁化する書
込み用ヘツドと、再生時に前記面に平行で磁化方
向と垂直な成分を読み出す再生用ヘツドとを有す
るトランスバース記録用磁気ヘツドが得られる。 According to the present invention, there are provided a write head that magnetizes a medium in a mode parallel to the surface of the recording medium and perpendicular to the track direction of the medium, and a reproducing head that reads out a component parallel to the surface and perpendicular to the magnetization direction during reproduction. A magnetic head for transverse recording is obtained.
次に本発明の一実施例について図面を参照して
詳細に説明する。 Next, one embodiment of the present invention will be described in detail with reference to the drawings.
第１図はトランスバース記録の原理を示す。第
１図において、記録媒体１は媒体移動方向に対し
て垂直な方向に磁化２，３される。磁化２は磁化
３の磁界方向とは反対向に磁化される。これら磁
化２および磁化３から放出される磁界はHy成分
およびトラツク端で生するHx成分を有する。こ
のHx成分の磁界は再生時に利用し得る程度の出
力を有する。 FIG. 1 shows the principle of transverse recording. In FIG. 1, a recording medium 1 is magnetized 2, 3 in a direction perpendicular to the direction of medium movement. Magnetization 2 is magnetized in the opposite direction to the magnetic field direction of magnetization 3. The magnetic field emitted from these magnetizations 2 and 3 has a Hy component and an Hx component generated at the track end. This Hx component magnetic field has an output that can be used during reproduction.
第２図は本発明の一実施例である磁気ヘツドを
示す。第２図において、本実施例の磁気ヘツドは
トランスバース記録を行なう書込用ヘツド４と、
再生用ヘツド６とを含む。この再生用ヘツド６は
書込用ヘツド４に対して非磁性体５を挾んで設け
られていて、ギヤツプ７が磁化２，３の方向に対
して垂直方向に距離Ｇを有する。このヘツド６の
距離Ｇは記録波長λに比べ充分小さくする必要が
ある。 FIG. 2 shows a magnetic head which is an embodiment of the present invention. In FIG. 2, the magnetic head of this embodiment includes a write head 4 that performs transverse recording;
and a reproducing head 6. This reproducing head 6 is provided with a non-magnetic material 5 interposed between it and the writing head 4, and a gap 7 has a distance G in the direction perpendicular to the direction of the magnetizations 2 and 3. This distance G of the head 6 needs to be sufficiently smaller than the recording wavelength λ.
記録用ヘツド４と再生用ヘツド６は非磁性の物
質によつて、双方の磁気的な干渉がない程度に分
離されており、またこの部分を磁気シールド等を
用いてもよい。 The recording head 4 and the reproducing head 6 are separated by a non-magnetic material to such an extent that there is no magnetic interference between the two, and a magnetic shield or the like may be used for this portion.
この磁気ヘツドは磁性媒体１にデータを書込む
場合、書込み用ヘツド４に巻回されているコイル
９に書込み電流Iwを流すことにより行なわれ、
またこのデータを再生する場合、再生用ヘツド６
に巻回されているコイル１０から読み出し電流を
取り出す。再生用ヘツド６は記録媒体に対するギ
ヤツプ位置がHx成分の大きいトラツク端にある
ことが望ましい。 When this magnetic head writes data to the magnetic medium 1, it is done by passing a write current Iw through a coil 9 wound around the write head 4.
In addition, when reproducing this data, the reproduction head 6
A read current is extracted from the coil 10 wound around the coil 10. It is desirable that the gap position of the reproducing head 6 with respect to the recording medium be at the end of the track where the Hx component is large.
本発明は以上説明したようにトランスバース記
録において、磁方向と垂直な成分を用いて再生信
号を得ることができる。 As explained above, the present invention can obtain a reproduced signal using a component perpendicular to the magnetic direction in transverse recording.
第１図はトランスバース記録の原理を示す図、
第２図は本発明の一実施例である磁気ヘツドを示
す図である。
１……磁性記録媒体、２，３……磁化、４……
トランスバース書込み用ヘツド、５……非磁性
体、６……再生ヘツド、７……再生ヘツドのギヤ
ップ。
Figure 1 is a diagram showing the principle of transverse recording.
FIG. 2 is a diagram showing a magnetic head which is an embodiment of the present invention. 1... Magnetic recording medium, 2, 3... Magnetization, 4...
transverse writing head, 5... non-magnetic material, 6... reproducing head, 7... gap of reproducing head.
Claims (1)
に垂直なモードで媒体を磁化する書込み用ヘツド
と、再生時に前記面に平行で磁化方向と垂直な成
分を読み出す再生用ヘツドとを有するトランスバ
ース記録用磁気ヘツド。1. A transverse device having a write head that magnetizes the medium in a mode parallel to the surface of the recording medium and perpendicular to the track direction of the medium, and a reproducing head that reads a component parallel to the surface and perpendicular to the magnetization direction during reproduction. Magnetic head for recording.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7531981A JPS57191823A (en) | 1981-05-19 | 1981-05-19 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7531981A JPS57191823A (en) | 1981-05-19 | 1981-05-19 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57191823A JPS57191823A (en) | 1982-11-25 |
| JPS631644B2 true JPS631644B2 (en) | 1988-01-13 |
Family
ID=13572814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7531981A Granted JPS57191823A (en) | 1981-05-19 | 1981-05-19 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57191823A (en) |
-
1981
- 1981-05-19 JP JP7531981A patent/JPS57191823A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57191823A (en) | 1982-11-25 |
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