JPH06267221A - Magnetic recording and reproducing cevice - Google Patents
Magnetic recording and reproducing ceviceInfo
- Publication number
- JPH06267221A JPH06267221A JP5439093A JP5439093A JPH06267221A JP H06267221 A JPH06267221 A JP H06267221A JP 5439093 A JP5439093 A JP 5439093A JP 5439093 A JP5439093 A JP 5439093A JP H06267221 A JPH06267221 A JP H06267221A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording
- head
- recording medium
- magnetic 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
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磁気記録再生装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus.
【０００２】[0002]
【従来の技術】従来のハードディスクは、面内磁気記録
媒体と、浮上型磁気ヘッドを用いて非接触により磁気記
録再生を行ってきたが、非接触により生じる磁気ヘッド
と面内磁気記録媒体との距離が出力低下の原因になって
おり、その低下は、再生時のスペーシング dについては
-55 d/λ(dB)（d:磁気ヘッドと面内磁気記録媒体の磁性
膜表面との距離、λ: 記録波長）であり、記録時のスペ
ーシング dについてはそれ以下であるとされてきた。そ
のため、スペーシングの設定は、常に同一スペーシング
で動作した場合の磁気記録媒体と磁気ヘッドの耐久性と
のかねあいで決まっていた。2. Description of the Related Art In a conventional hard disk, magnetic recording and reproduction are carried out in a non-contact manner by using an in-plane magnetic recording medium and a floating type magnetic head. The distance causes the output to decrease, and that decrease is related to the spacing d during playback.
-55 d / λ (dB) (d: distance between magnetic head and magnetic film surface of in-plane magnetic recording medium, λ: recording wavelength), and spacing d at the time of recording is considered to be less than that. It was Therefore, the spacing setting is always determined by the trade-off between the durability of the magnetic recording medium and the magnetic head when operating with the same spacing.
【０００３】[0003]
【発明が解決しようとする課題】ハードディスクにおい
ては、磁気記録媒体と磁気ヘッドの耐久性の観点から、
磁気ヘッドに浮上型ヘッドを用いて非接触により磁気記
録再生を行っているが、垂直磁気記録媒体を用いて磁気
記録再生を行う場合には、記録の時の垂直磁気記録媒体
と磁気ヘッドの間の距離の大きさにより大きな出力低下
をまねく。そこで、本発明は垂直磁気記録媒体と磁気ヘ
ッドの耐久性を保ちかつ出力低下をまねかないようにす
るための磁気記録再生装置を提供することを目的とす
る。In the hard disk, from the viewpoint of the durability of the magnetic recording medium and the magnetic head,
Although a floating head is used as a magnetic head for non-contact magnetic recording / reproduction, when magnetic recording / reproduction is performed using a perpendicular magnetic recording medium, when recording is performed between the perpendicular magnetic recording medium and the magnetic head. Depending on the size of the distance, the output will be greatly reduced. Therefore, an object of the present invention is to provide a magnetic recording / reproducing apparatus for maintaining the durability of the perpendicular magnetic recording medium and the magnetic head and preventing the output from decreasing.
【０００４】[0004]
【課題を解決するための手段】本発明は、記録再生を行
う磁気ヘッドとそれを支持するブロックとから構成され
たヘッド部分と垂直磁気記録媒体とを一緒に用いた磁気
記録再生装置において、ディスクコントローラーから記
録指令信号が送られた時のみ記録を行う磁気ヘッドを垂
直磁気記録媒体に近づけるようにしたものである。磁気
ヘッドを垂直磁気記録媒体に接近させる具体的な手段と
しては、磁気ヘッドを支持するブロックごと垂直磁気記
録媒体に接近させる手段、記録再生を行う磁気ヘッドと
それを支持するブロックとの間に磁気ヘッドを動作させ
る構造を持ち垂直磁気記録媒体に接近させる手段、記録
を行う磁気ヘッドが再生を行う磁気ヘッドと分離してい
る場合に記録を行う磁気ヘッドのみを動作させる構造を
持ち垂直磁気記録媒体に接近させる手段がある。また、
記録を行う磁気ヘッドと再生を行う磁気ヘッドが分離し
ている場合に、常に記録を行う磁気ヘッドを再生を行う
磁気ヘッドよりも垂直磁気記録媒体に近い位置に配置さ
せる。DISCLOSURE OF THE INVENTION The present invention relates to a magnetic recording / reproducing apparatus which uses a head portion composed of a magnetic head for recording / reproducing and a block supporting the magnetic head and a perpendicular magnetic recording medium together. The magnetic head for recording is made to approach the perpendicular magnetic recording medium only when a recording command signal is sent from the controller. Specific means for approaching the magnetic head to the perpendicular magnetic recording medium include a means for approaching the perpendicular magnetic recording medium together with the block supporting the magnetic head, and a magnetic element between the magnetic head for recording / reproducing and the block supporting it. Perpendicular magnetic recording medium having a structure for operating a head, a means for approaching a perpendicular magnetic recording medium, and a structure for operating only a magnetic head for recording when a magnetic head for recording is separated from a magnetic head for reproducing There is a means to approach. Also,
When the magnetic head for recording and the magnetic head for reproducing are separated, the magnetic head for recording is always arranged closer to the perpendicular magnetic recording medium than the magnetic head for reproducing.
【０００５】[0005]
【作用】本発明の磁気記録再生装置によれば、記録時の
み磁気ヘッドを垂直磁気記録媒体に近づけることによ
り、垂直磁気記録で問題となっている記録の際のスペー
シングによる出力低下を低減し、また、記録時以外には
スペーシングを大きく保つことで、常にスペーシングが
小さい状態よりも磁気ヘッド・垂直磁気記録媒体の耐久
性が向上できる。また、再生スペーシングｄｒを ｄｒ≦−ln(0.3) ×λmin/2 π, λmin ：最短記録波長 の領域で使用することにより、再生分解能が３０％以上
確保でき、高いＳ／Ｎで垂直磁気記録再生を行うことが
できる。According to the magnetic recording / reproducing apparatus of the present invention, the magnetic head is brought close to the perpendicular magnetic recording medium only at the time of recording, thereby reducing the output reduction due to the spacing at the time of recording which is a problem in perpendicular magnetic recording. Also, by keeping the spacing large except during recording, the durability of the magnetic head / perpendicular magnetic recording medium can be improved more than in the state where the spacing is always small. Further, by using the reproducing spacing dr in the region of dr ≦ −ln (0.3) × λmin / 2π, λmin: the shortest recording wavelength, the reproducing resolution can be secured at 30% or more, and the perpendicular magnetic recording can be performed with a high S / N. Playback can be performed.
【０００６】[0006]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１〜図１１は、その実施例を示す図である。図
１〜図１０は磁気ヘッド及び垂直磁気記録媒体の横断面
図であり、図１１は磁気ヘッドを制御するためのブロッ
ク図である。Embodiments of the present invention will be described below with reference to the drawings. 1 to 11 are diagrams showing the embodiment. 1 to 10 are cross-sectional views of the magnetic head and the perpendicular magnetic recording medium, and FIG. 11 is a block diagram for controlling the magnetic head.
【０００７】図１の磁気記録再生機構は、媒体面に対し
て垂直な方向に磁界を発生させるコイル２２と磁気コア
２３とからなる記録用磁気ヘッド２１と、磁気抵抗効果
を有する磁性体膜２６と外部からの漏れ磁界の浸入を防
ぐために設けられた磁性シールド膜２５（ａ）・２５
（ｂ）とからなる再生用磁気ヘッド２４と、磁気記録媒
体面に対して垂直な方向に磁気異方性を有する磁性膜
（以降、垂直磁気異方性膜という）１１とそれを支える
基板１２とからなる垂直磁気記録媒体１７とから形成さ
れる。そして、再生用磁気ヘッド２４と垂直磁気異方性
膜１１表面との間の距離ｄｒよりも、記録用磁気ヘッド
２１と垂直磁気異方性膜１１表面との間の距離ｄｗが小
さい所に位置している。このとき、ｄｒ＞０、ｄｗ＝０
でもよい。またさらに、図１１のディスクコントローラ
ー２から記録指令信号が送られたときのみ記録磁気ヘッ
ド２１と再生磁気ヘッド２４を支持するブロック１４を
支えるサスペンション１３を動かして垂直磁気記録媒体
１７に接近または接触させる機構を有してもよい。この
構造において、たとえば 100 kFCI の時、(1) 記録時の
スペーシングも再生時のスペーシングも 0.1 um である
場合、(2) 記録時も再生時も接触の場合、(3) 記録時の
み接触の場合について、出力増加の割合と耐久性を測定
を行った結果、表１に示すように、浮上しているときと
同じ程度の耐久性を保ちかつ接触で記録再生を行ったと
きに近い出力を確保できた。The magnetic recording / reproducing mechanism of FIG. 1 has a recording magnetic head 21 including a coil 22 and a magnetic core 23 for generating a magnetic field in a direction perpendicular to the medium surface, and a magnetic film 26 having a magnetoresistive effect. And a magnetic shield film 25 (a) / 25 provided to prevent intrusion of a leakage magnetic field from the outside.
(B) A reproducing magnetic head 24, a magnetic film 11 having magnetic anisotropy in a direction perpendicular to the surface of the magnetic recording medium (hereinafter referred to as a perpendicular magnetic anisotropy film) 11, and a substrate 12 supporting the magnetic film. And a perpendicular magnetic recording medium 17 composed of Then, it is located at a position where the distance dw between the recording magnetic head 21 and the surface of the perpendicular magnetic anisotropic film 11 is smaller than the distance dr between the reproducing magnetic head 24 and the surface of the perpendicular magnetic anisotropic film 11. is doing. At this time, dr> 0, dw = 0
But it's okay. Furthermore, the suspension 13 supporting the block 14 supporting the recording magnetic head 21 and the reproducing magnetic head 24 is moved to approach or contact the perpendicular magnetic recording medium 17 only when a recording command signal is sent from the disk controller 2 in FIG. It may have a mechanism. In this structure, for example, at 100 kFCI, (1) recording and playback spacing are both 0.1 um, (2) both recording and playback contact, and (3) recording only As a result of measuring the rate of increase in output and the durability in the case of contact, as shown in Table 1, it is possible to maintain the same level of durability as when flying and to be close to when recording and reproducing by contact. I was able to secure the output.
【０００８】[0008]
【表１】 出力増加の割合 (100 kFCI) 耐久性 (1) 記録時も再生時も スヘ゜ーシンク゛0.1 umの場合 ０ｄＢ ２４ヶ月 (2) 記録時も再生時も 接触の場合 ２４ｄＢ ３０時間 (3) 記録時のみ 接触の場合 １６ｄＢ ２２ヶ月 図２は、図１の磁気記録再生機構において、垂直磁性体
膜１１と基板１２との間に軟磁性膜１５を有する垂直磁
気記録媒体１８を用いた場合である。再生用磁気ヘッド
２４と垂直磁気異方性膜１１表面との間の距離ｄｒより
も、記録用磁気ヘッド２１と垂直磁気異方性膜１１表面
との間の距離ｄｗが小さい所に位置している。このと
き、ｄｒ＞０、ｄｗ＝０でもよい。またさらに、図１１
のディスクコントローラー２から記録指令信号が送られ
たときのみ記録磁気ヘッド２１と再生磁気ヘッド２４を
支持するブロック１４を支えるサスペンション１３を動
かし垂直磁気記録媒体１８に接近または接触させる機構
を有してもよい。[Table 1] Output increase rate (100 kFCI) Durability (1) Spacing 0.1 um both during recording and playback 0 dB 24 months (2) During recording and playback 24 dB 30 hours (3) In the case of contact only during recording 16 dB 22 months FIG. 2 shows a case where the perpendicular magnetic recording medium 18 having the soft magnetic film 15 between the perpendicular magnetic film 11 and the substrate 12 is used in the magnetic recording / reproducing mechanism of FIG. is there. It is located at a position where the distance dw between the recording magnetic head 21 and the surface of the perpendicular magnetic anisotropic film 11 is smaller than the distance dr between the reproducing magnetic head 24 and the surface of the perpendicular magnetic anisotropic film 11. There is. At this time, dr> 0 and dw = 0 may be set. Furthermore, FIG.
Even if a mechanism for moving the suspension 13 supporting the block 14 supporting the recording magnetic head 21 and the reproducing magnetic head 24 to approach or contact the perpendicular magnetic recording medium 18 only when a recording command signal is sent from the disk controller 2 of FIG. Good.
【０００９】図３の磁気記録再生機構は、媒体面に対し
て垂直な方向に磁界を発生させるコイル２２と磁気コア
２３とからなる記録用磁気ヘッドと、磁気抵抗効果を有
する磁性体膜２６と外部からの漏れ磁界の浸入を防ぐた
めの磁性シールド膜２５（ｂ）とからなる再生用磁気ヘ
ッドと、垂直磁気異方性膜１１とそれを支える基板１２
とからなる垂直磁気記録媒体１７とから形成される。そ
して、磁気抵抗効果を有する磁性体膜２６と垂直磁気異
方性膜１１表面との間の距離ｄｒよりも、記録用磁気ヘ
ッド２３と垂直磁気異方性膜１１表面との間の距離ｄｗ
が小さい所に位置している。このとき、ｄｒ＞０、ｄｗ
＝０でもよい。またさらに、図１１のディスクコントロ
ーラー２から記録指令信号が送られたときのみ記録磁気
ヘッドと再生磁気ヘッドを支持するブロック１４を支え
るサスペンション１３を動かし垂直磁気記録媒体１７に
接近または接触させる機構を有してもよい。The magnetic recording / reproducing mechanism of FIG. 3 includes a recording magnetic head including a coil 22 and a magnetic core 23 for generating a magnetic field in a direction perpendicular to the medium surface, and a magnetic film 26 having a magnetoresistive effect. A reproducing magnetic head composed of a magnetic shield film 25 (b) for preventing intrusion of a leakage magnetic field from the outside, a perpendicular magnetic anisotropic film 11 and a substrate 12 supporting the same.
And a perpendicular magnetic recording medium 17 composed of The distance dw between the recording magnetic head 23 and the surface of the perpendicular magnetic anisotropic film 11 is more than the distance dr between the magnetic film 26 having the magnetoresistive effect and the surface of the perpendicular magnetic anisotropic film 11.
Is located in a small area. At this time, dr> 0, dw
= 0 may be sufficient. Furthermore, a mechanism for moving the suspension 13 supporting the block 14 supporting the recording magnetic head and the reproducing magnetic head to approach or contact the perpendicular magnetic recording medium 17 only when the recording command signal is sent from the disk controller 2 of FIG. You may.
【００１０】図４は、図３の磁気記録再生機構におい
て、垂直磁性体膜１１と基板１２との間に軟磁性膜１５
を有する垂直磁気記録媒体１８を用いた場合である。再
生用磁気ヘッド２４と垂直磁気異方性膜１１表面との間
の距離ｄｒよりも、記録用磁気ヘッド２３と垂直磁気異
方性膜１１表面との間の距離ｄｗが小さい所に位置して
いる。このとき、ｄｒ＞０、ｄｗ＝０でもよい。またさ
らに、図１１のディスクコントローラー２から記録指令
信号が送られたときのみ記録磁気ヘッドと再生磁気ヘッ
ドを支持するブロック１４を支えるサスペンション１３
を動かし垂直磁気記録媒体１８に接近または接触させる
機構を有してもよい。FIG. 4 shows a soft magnetic film 15 between the perpendicular magnetic film 11 and the substrate 12 in the magnetic recording / reproducing mechanism of FIG.
This is the case where the perpendicular magnetic recording medium 18 having It is located at a position where the distance dw between the recording magnetic head 23 and the surface of the perpendicular magnetic anisotropic film 11 is smaller than the distance dr between the reproducing magnetic head 24 and the surface of the perpendicular magnetic anisotropic film 11. There is. At this time, dr> 0 and dw = 0 may be set. Furthermore, a suspension 13 that supports a block 14 that supports a recording magnetic head and a reproducing magnetic head only when a recording command signal is sent from the disk controller 2 in FIG.
It may have a mechanism for moving the magnetic recording medium 18 to approach or contact the perpendicular magnetic recording medium 18.
【００１１】図５の磁気記録再生機構は、記録時には媒
体面に対して垂直な方向に磁界を発生させるためのコイ
ル２２と磁気コア２３とからなる記録再生を行う磁気ヘ
ッド２１と、垂直磁気異方性膜１１とそれを支える基板
１２とからなる垂直磁気記録媒体１７とから形成され
る。そして、図１１のディスクコントローラー２から記
録指令信号が送られたときのみブロック１４を支えるサ
スペンション１３を動かして垂直磁気記録媒体１７に接
近または接触させ、再生の時の垂直磁気異方性膜１１表
面と磁気ヘッド２１の間の距離ｄｒよりも記録の時の垂
直異方性膜１１表面と磁気ヘッド２１の間の距離ｄｗの
方を小さくさせる機構を有する。The magnetic recording / reproducing mechanism of FIG. 5 has a magnetic head 21 for recording / reproducing, which includes a coil 22 and a magnetic core 23 for generating a magnetic field in a direction perpendicular to the medium surface at the time of recording, and a perpendicular magnetic field. It is formed of a perpendicular magnetic recording medium 17 composed of an anisotropic film 11 and a substrate 12 supporting it. Then, only when a recording command signal is sent from the disk controller 2 in FIG. 11, the suspension 13 supporting the block 14 is moved to approach or contact the perpendicular magnetic recording medium 17, and the surface of the perpendicular magnetic anisotropic film 11 at the time of reproduction. It has a mechanism to make the distance dw between the surface of the perpendicular anisotropic film 11 and the magnetic head 21 at the time of recording smaller than the distance dr between the magnetic head 21 and the magnetic head 21.
【００１２】図６は、図５の磁気記録再生機構におい
て、垂直磁性体膜１１と基板１２との間に軟磁性膜１５
を有する垂直磁気記録媒体１８を用いた場合である。そ
して、図１１のディスクコントローラー２から記録指令
信号が送られたときのみブロック１４を支えるサスペン
ション１３を動かして垂直磁気記録媒体１８に接近また
は接触させ、再生の時の垂直磁気異方性膜１１表面と磁
気ヘッド２１の間の距離ｄｒよりも記録の時の垂直異方
性膜１１表面と磁気ヘッド２１の間の距離ｄｗの方を小
さくさせる機構を有する。FIG. 6 shows a soft magnetic film 15 between the perpendicular magnetic film 11 and the substrate 12 in the magnetic recording / reproducing mechanism of FIG.
This is the case where the perpendicular magnetic recording medium 18 having Then, only when a recording command signal is sent from the disk controller 2 of FIG. 11, the suspension 13 supporting the block 14 is moved to approach or contact the perpendicular magnetic recording medium 18, and the surface of the perpendicular magnetic anisotropic film 11 at the time of reproduction. It has a mechanism to make the distance dw between the surface of the perpendicular anisotropic film 11 and the magnetic head 21 at the time of recording smaller than the distance dr between the magnetic head 21 and the magnetic head 21.
【００１３】図７の磁気記録再生機構は、記録時には媒
体面に対して垂直な方向に磁界を発生させるためのコイ
ル２２と磁気コア２３とからなる記録再生を行う磁気ヘ
ッド２１と、それを支えるブロック１６と、磁気ヘッド
２１とブロック１６の間にあって磁気ヘッド２１を動作
させる構造２７と、垂直磁気異方性膜１１とそれを支え
る基板１２とからなる垂直磁気記録媒体１７とから形成
される。構造２７は圧電素子を用いてもよい。図７
（ａ）は、図１１のディスクコントローラー２から記録
指令信号が送られた場合以外の状態であり、ディスクコ
ントローラー２から記録指令信号が送られた場合には、
図１１のヘッドコントローラー４から構造２７に磁気ヘ
ッド２１を垂直磁気記録媒体１７の方に接近させる命令
が送られ、図７（ｂ）の状態となる。また、そのとき、
図７（ｃ）のように磁気ヘッド２１と垂直磁気記録媒体
１７が接触してもよい。The magnetic recording / reproducing mechanism of FIG. 7 comprises a magnetic head 21 for recording / reproducing which comprises a coil 22 and a magnetic core 23 for generating a magnetic field in a direction perpendicular to the medium surface at the time of recording, and supports it. It is composed of a block 16, a structure 27 between the magnetic heads 21 and 16 for operating the magnetic head 21, and a perpendicular magnetic recording medium 17 composed of the perpendicular magnetic anisotropic film 11 and a substrate 12 supporting the perpendicular magnetic anisotropic film 11. The structure 27 may use a piezoelectric element. Figure 7
(A) is a state other than when the recording command signal is sent from the disk controller 2 in FIG. 11, and when the recording command signal is sent from the disk controller 2,
The head controller 4 of FIG. 11 sends a command to the structure 27 to move the magnetic head 21 closer to the perpendicular magnetic recording medium 17, resulting in the state of FIG. 7B. Also, at that time,
The magnetic head 21 and the perpendicular magnetic recording medium 17 may contact each other as shown in FIG.
【００１４】図８は、図７の磁気記録再生機構におい
て、垂直磁性体膜１１と基板１２との間に軟磁性膜１５
を有する垂直磁気記録媒体１８を用いた場合である。図
８（ａ）は、図１１のディスクコントローラー２から記
録指令信号が送られた場合以外の状態であり、ディスク
コントローラー２から記録指令信号が送られた場合に
は、図１１のヘッドコントローラー４から構造２７に磁
気ヘッド２１を垂直磁気記録媒体１７の方に接近させる
命令が送られ、図８（ｂ）の状態となる。また、そのと
き、図８（ｃ）のように磁気ヘッド２１と垂直磁気記録
媒体１８が接触してもよい。FIG. 8 shows a soft magnetic film 15 between the perpendicular magnetic film 11 and the substrate 12 in the magnetic recording / reproducing mechanism of FIG.
This is the case where the perpendicular magnetic recording medium 18 having FIG. 8A shows a state other than the case where the recording command signal is sent from the disk controller 2 of FIG. 11, and when the recording command signal is sent from the disk controller 2, the head controller 4 of FIG. A command is sent to the structure 27 to bring the magnetic head 21 closer to the perpendicular magnetic recording medium 17, and the state shown in FIG. At that time, the magnetic head 21 and the perpendicular magnetic recording medium 18 may come into contact with each other as shown in FIG.
【００１５】図９の磁気記録再生機構は、媒体面に対し
て垂直な方向に磁界を発生させるコイル２２と磁気コア
２３とからなる記録用磁気ヘッド２１と、それを支える
ブロック１６と、磁気ヘッド２１とブロック１６の間に
あって磁気ヘッド２１を動作させる構造２７と、磁気抵
抗効果を有する磁性体膜２６と外部からの漏れ磁界の浸
入を防ぐために設けられた磁性シールド膜２５（ａ）・
２５（ｂ）とからなる再生用磁気ヘッド２４と、垂直磁
気異方性膜１１とそれを支える基板１２とからなる垂直
磁気記録媒体１７とから形成される。構造２７は圧電素
子を用いてもよい。図９（ａ）は、図１１のディスクコ
ントローラー２から記録指令信号が送られた場合以外の
状態であり、ディスクコントローラー２から記録指令信
号が送られた場合には、図１１のヘッドコントローラー
４から構造２７に磁気ヘッド２１を垂直磁気記録媒体１
７の方に接近させる命令が送られ、図９（ｂ）の状態と
なる。また、そのとき、図９（ｃ）のように磁気ヘッド
２１と垂直磁気記録媒体１７が接触してもよい。The magnetic recording / reproducing mechanism of FIG. 9 includes a recording magnetic head 21 including a coil 22 and a magnetic core 23 for generating a magnetic field in a direction perpendicular to the medium surface, a block 16 supporting the recording magnetic head 21, and a magnetic head. 21 between the block 21 and the block 16 for operating the magnetic head 21, the magnetic film 26 having a magnetoresistive effect, and the magnetic shield film 25 (a) provided to prevent the leakage magnetic field from entering.
And a perpendicular magnetic recording medium 17 including the perpendicular magnetic anisotropic film 11 and the substrate 12 supporting the perpendicular magnetic anisotropic film 11. The structure 27 may use a piezoelectric element. FIG. 9A shows a state other than when the recording command signal is sent from the disk controller 2 of FIG. 11, and when the recording command signal is sent from the disk controller 2, the head controller 4 of FIG. The structure 27 includes the magnetic head 21 and the perpendicular magnetic recording medium 1
7 is sent, and the state shown in FIG. 9B is obtained. At that time, the magnetic head 21 and the perpendicular magnetic recording medium 17 may come into contact with each other as shown in FIG.
【００１６】図１０は、図９の磁気記録再生機構におい
て、垂直磁性体膜１１と基板１２との間に軟磁性膜１５
を有する垂直磁気記録媒体１８を用いた場合である。図
１０（ａ）は、図１１のディスクコントローラー２から
記録指令信号が送られた場合以外の状態であり、ディス
クコントローラー２から記録指令信号が送られた場合に
は、図１１のヘッドコントローラー４から構造２７に磁
気ヘッド２１を垂直磁気記録媒体１８の方に接近させる
命令が送られ、図１０（ｂ）の状態となる。また、その
とき、図１０（ｃ）のように磁気ヘッド２１と垂直磁気
記録媒体１８が接触してもよい。なお、図２から図１０
の実施例においても、表１のような効果が確認された。FIG. 10 shows the soft magnetic film 15 between the perpendicular magnetic film 11 and the substrate 12 in the magnetic recording / reproducing mechanism of FIG.
This is the case where the perpendicular magnetic recording medium 18 having FIG. 10A shows a state other than the case where the recording command signal is sent from the disk controller 2 of FIG. 11, and when the recording command signal is sent from the disk controller 2, the head controller 4 of FIG. A command is sent to the structure 27 to move the magnetic head 21 closer to the perpendicular magnetic recording medium 18, and the state shown in FIG. At that time, the magnetic head 21 and the perpendicular magnetic recording medium 18 may come into contact with each other as shown in FIG. 2 to 10
The effect as shown in Table 1 was confirmed also in the example.
【００１７】[0017]
【発明の効果】本発明によれば、記録の時のみスペーシ
ングを低下させることにより、ヘッドが常に浮上してい
る場合と同程度の耐久性を保ち、かつ、ヘッドと媒体を
接触させて記録再生を行ったときに近い出力を確保でき
る。According to the present invention, by reducing the spacing only at the time of recording, the durability is maintained to the same extent as when the head is constantly flying, and recording is performed by contacting the head with the medium. It is possible to secure a similar output when playing back.
【図１】 本発明の第１の実施例に係る磁気記録再生機
構の横断面図FIG. 1 is a cross-sectional view of a magnetic recording / reproducing mechanism according to a first embodiment of the present invention.
【図２】 本発明の第２の実施例に係る磁気記録再生機
構の横断面図FIG. 2 is a cross-sectional view of a magnetic recording / reproducing mechanism according to a second embodiment of the present invention.
【図３】 本発明の第３の実施例に係る磁気記録再生機
構の横断面図FIG. 3 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a third embodiment of the present invention.
【図４】 本発明の第４の実施例に係る磁気記録再生機
構の横断面図FIG. 4 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a fourth embodiment of the present invention.
【図５】 本発明の第５の実施例に係る磁気記録再生機
構の横断面図FIG. 5 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a fifth embodiment of the present invention.
【図６】 本発明の第６の実施例に係る磁気記録再生機
構の横断面図FIG. 6 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a sixth embodiment of the present invention.
【図７】 本発明の第７の実施例に係る磁気記録再生機
構の横断面図FIG. 7 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a seventh embodiment of the present invention.
【図８】 本発明の第８の実施例に係る磁気記録再生機
構の横断面図FIG. 8 is a transverse sectional view of a magnetic recording / reproducing mechanism according to an eighth embodiment of the present invention.
【図９】 本発明の第９の実施例に係る磁気記録再生機
構の横断面図FIG. 9 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a ninth embodiment of the present invention.
【図１０】 本発明の第１０の実施例に係る磁気記録再
生機構の横断面図FIG. 10 is a transverse sectional view of a magnetic recording / reproducing mechanism according to a tenth embodiment of the present invention.
【図１１】 本発明の第１〜第１０の実施例に係る磁気
ヘッドを制御するためのブロック図FIG. 11 is a block diagram for controlling a magnetic head according to first to tenth embodiments of the present invention.
２…ディスクコントローラー ４…ヘッドコントローラー ５…磁気ヘッド ６…垂直磁気記録媒体 １３…サスペンション ２２…磁気コイル ２３…磁気コア ２５（ａ）・２５（ｂ）…磁気シールド用軟磁性膜 ２６…磁気抵抗効果を有する磁性膜 ２７…圧電素子等 2 ... Disk controller 4 ... Head controller 5 ... Magnetic head 6 ... Perpendicular magnetic recording medium 13 ... Suspension 22 ... Magnetic coil 23 ... Magnetic core 25 (a) / 25 (b) ... Magnetic shield soft magnetic film 26 ... Magnetoresistive effect Magnetic film 27 having ... Piezoelectric element or the like
Claims (6)
録再生装置において、記録時の磁気記録媒体・磁気ヘッ
ド間の距離ｄｗと、再生時の磁気記録媒体・磁気ヘッド
間の距離ｄｒとの関係が、 ｄｗ＜ｄｒ であることを特徴とする磁気記録再生装置。1. A magnetic recording / reproducing apparatus using a magnetic recording medium and a magnetic head, wherein a distance dw between the magnetic recording medium and the magnetic head during recording and a distance dr between the magnetic recording medium and the magnetic head during reproducing. A magnetic recording / reproducing apparatus characterized in that the relationship is dw <dr.
録再生装置において、記録時の磁気記録媒体・磁気ヘッ
ド間の距離ｄｗと、再生時の磁気記録媒体・磁気ヘッド
間の距離ｄｒとの関係が、 ｄｗ＜ｄｒ ただし、 ｄｒ≦−ln(0.3) ×λmin ／2 π, λmin ：最短記録波
長 であることを特徴とする磁気記録再生装置。2. A magnetic recording / reproducing apparatus using a magnetic recording medium and a magnetic head, wherein a distance dw between the magnetic recording medium and the magnetic head during recording and a distance dr between the magnetic recording medium and the magnetic head during reproducing. The relationship is dw <dr, where dr ≦ −ln (0.3) × λmin / 2π, λmin: shortest recording wavelength.
録再生装置において、記録時の磁気記録媒体・磁気ヘッ
ド間の距離ｄｗが、 ｄｗ＝０ となることを特徴とする請求項１または２記載の磁気記
録再生装置。3. A magnetic recording / reproducing apparatus using a magnetic recording medium and a magnetic head, wherein a distance dw between the magnetic recording medium and the magnetic head at the time of recording is dw = 0. The magnetic recording / reproducing apparatus described.
垂直な方向に異方性をもつ磁性体膜を有するものであっ
て、磁気ヘッドが、磁気記録媒体面に対して垂直な方向
の磁界を発生するものであることを特徴と請求項１記載
の磁気記録再生装置。4. A magnetic recording medium having a magnetic film having anisotropy in a direction perpendicular to the surface of the magnetic recording medium, wherein the magnetic head is perpendicular to the surface of the magnetic recording medium. 2. The magnetic recording / reproducing apparatus according to claim 1, wherein the magnetic recording / reproducing apparatus generates a magnetic field.
れており、記録用は磁気記録媒体面に対して垂直な方向
の磁界を発生するもので、再生用は磁気抵抗効果を有す
る磁性体膜をもつものであることを特徴とする請求項１
または請求項２記載の磁気記録再生装置。5. A magnetic head is divided into a recording head and a reproducing head. The recording head generates a magnetic field in a direction perpendicular to the magnetic recording medium surface, and the reproducing head has a magnetoresistive effect. 2. A magnetic film having a magnetic film.
Alternatively, the magnetic recording / reproducing apparatus according to claim 2.
コントローラーと、ヘッド・媒体駆動装置とを具備し、
ディスクコントローラーから記録指令信号が送られたと
きに、磁気ヘッドを磁気記録媒体に接近または接触させ
る機構を持つことを特徴とする請求項１または請求項２
記載の磁気記録再生装置。6. A magnetic recording medium, a magnetic head, a disk controller, and a head / medium drive unit,
3. A magnetic head having a mechanism for approaching or contacting a magnetic recording medium when a recording command signal is sent from the disk controller.
The magnetic recording / reproducing apparatus described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5439093A JPH06267221A (en) | 1993-03-15 | 1993-03-15 | Magnetic recording and reproducing cevice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5439093A JPH06267221A (en) | 1993-03-15 | 1993-03-15 | Magnetic recording and reproducing cevice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06267221A true JPH06267221A (en) | 1994-09-22 |
Family
ID=12969363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5439093A Pending JPH06267221A (en) | 1993-03-15 | 1993-03-15 | Magnetic recording and reproducing cevice |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06267221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6545841B1 (en) * | 1999-02-08 | 2003-04-08 | Seagate Technology Llc | Strategy for read/write spacing requirement |
-
1993
- 1993-03-15 JP JP5439093A patent/JPH06267221A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6545841B1 (en) * | 1999-02-08 | 2003-04-08 | Seagate Technology Llc | Strategy for read/write spacing requirement |
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