JPS5845615A - Vertical magnetizing recording and reproducing head - Google Patents
Vertical magnetizing recording and reproducing headInfo
- Publication number
- JPS5845615A JPS5845615A JP14240081A JP14240081A JPS5845615A JP S5845615 A JPS5845615 A JP S5845615A JP 14240081 A JP14240081 A JP 14240081A JP 14240081 A JP14240081 A JP 14240081A JP S5845615 A JPS5845615 A JP S5845615A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- main magnetic
- lambda
- magnetic
- magnetic pole
- 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
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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
本丸間は磁気ディスク装置、磁気テープ装置において1
史用される磁気ご己録円生出ヘッドに関するものである
。[Detailed Description of the Invention] Honmaruma is a magnetic disk device and a magnetic tape device.
This relates to a magnetic recording head used in history.
近年、情報量の増大に伴なって大容りかつ高密度化され
た情報蓄積装置への安水が増している。In recent years, as the amount of information has increased, the demand for large-capacity and high-density information storage devices has increased.
磁気記録媒体に対し、垂直方向に磁場を与える方法とし
て垂直磁化記録丹生方式はこの要求にこたえるものとし
て多方面でtIjF 死されつつある。この方式の(帆
要は特開+1(152−134706号、!+f1]1
K−i 53−32009号に開示されている。この方
式に便用される記録書土用ヘッドは、第1図にボずもの
か代表的である。主磁極1は補助磁極2と機械的には分
層されているが、磁気的にはW勧する関係にあり、補助
磁極2からの磁界に」;って磁化される。補助磁極2に
巻かれたコイルに記録信号を通じる事により、主磁極1
に6導磁界が発生し、主磁極1の磁界が4直磁化膜4を
磁化し、情報は記録される。再生の場合は、垂面磁化H
徘4の磁化分卯に従って、上述と逆の鉤程に」;す、コ
イル6に磁圧が訪起される。垂直磁化膜4と記録媒体基
板6の間に高透磁率層5を設けることによってより高密
度な記録を達成する方法が提案されている。The perpendicular magnetization recording method, which is a method of applying a magnetic field in the perpendicular direction to a magnetic recording medium, is being used in many ways to meet this demand. In this method
It is disclosed in K-i 53-32009. A typical recording head used in this method is shown in FIG. 1. Although the main magnetic pole 1 is mechanically separated from the auxiliary magnetic pole 2, they are magnetically in a W-like relationship and are magnetized by the magnetic field from the auxiliary magnetic pole 2. By passing the recording signal to the coil wound around the auxiliary magnetic pole 2, the main magnetic pole 1
6 magnetic fields are generated, the magnetic field of the main magnetic pole 1 magnetizes the 4 directly magnetized films 4, and information is recorded. For reproduction, vertical magnetization H
According to the magnetization distribution of the coil 4, a magnetic pressure is generated in the coil 6 in the opposite direction to that described above. A method has been proposed in which a high magnetic permeability layer 5 is provided between the perpendicular magnetization film 4 and the recording medium substrate 6 to achieve higher density recording.
これは磁束が主磁極近傍に集中することによる。This is because the magnetic flux is concentrated near the main magnetic pole.
この他にも柿々の形状の垂直磁化記録再生用ヘッドが考
案されている。たとえば第2図に示す如く、媒体を挟ま
ない形状のものがある。Other persimmon-shaped perpendicular magnetization recording and reproducing heads have also been devised. For example, as shown in FIG. 2, there is a shape that does not sandwich the medium.
これらのヘッドによる記録内生特性の例を第6図に示す
。ここに於いて横軸はインチ当りビット密度(単位BP
工)蟻軸再生出力(単位μV)で磁極厚み1.5μとし
た時、記録密度を上げていった時の((11助直極のコ
イル乙に発生ずる出力電圧をプロットしたものである。FIG. 6 shows an example of recording endogenous characteristics by these heads. Here, the horizontal axis is the bit density per inch (unit: BP).
Engineering) When the magnetic pole thickness is set to 1.5μ at the dovetail axis reproduction output (unit: μV), the output voltage generated in the coil B of the 11 auxiliary pole is plotted as the recording density is increased.
これによれは200にBPIまでの記録が達成されてい
ることか知れる。This means that a record of up to 200 BPI has been achieved.
しかし2Q’KBPIiでは安定した出力を伶ることか
できるが、それ以」〕に記録蕾曳を十げた場合再生出力
がX(激に落ち込む点が存在する。However, with 2Q'KBPIi, it is possible to maintain a stable output, but there is a point at which the playback output drops sharply when the recording buds are removed.
本つに明の目的は、高密度記録領域まで安定した再生が
川n[チな、垂直磁化記録書小川ヘッドを伶ようとする
ものであり、尚密度記録領域にがミいて再生出力が急激
に落ち込むいくつかの点をなくす坐かI]能な!!!、
直磁化記録書生ヘッドを提供することにある。In fact, the purpose of Akira is to replace the perpendicular magnetization recording head Ogawa, which is capable of stable reproduction up to high-density recording areas. Eliminate some of the points that make you depressed! ! ! ,
An object of the present invention is to provide a direct magnetization recording/writing head.
木兄jtlJは、厚みの〃いに異なる2つ以上の主磁極
を、rば気記録奴体の移動方向に並べたことに特徴があ
る。The feature of the Kinoe JTLJ is that two or more main magnetic poles with very different thicknesses are arranged in the direction of movement of the r-air recording body.
従来のものは第6図に示すような高密度記録領域におけ
る再生出力のとびとびに生ずる落ち込み番1、リング形
ヘッドのギャップtfjによる1」1力零点に相当して
いる。In the conventional system, the number 1 corresponds to the slump No. 1 that occurs at intervals in the reproduction output in a high-density recording area as shown in FIG. 6, and the 1" 1 force zero point due to the gap tfj of the ring-shaped head.
模擬間第71Δにおいて説明すると、(a)に45いて
七−人(2n +1 ) / 2・・・(tはリング唇
ヘッドのギャップ長、垂直型ヘッドでは主イ直極力大と
なり、(b)に4.5いてt−尺(2n)/2−n入と
なり74(主出力が落ち込む、−1これは1−べ(1)
n)/2の時はイ′″J(H方向か正逆同数の為、外部
に出る磁界は零であるのに対し、七−人(2n+1)/
2では外部にイ戯竹、か現オ〕れる為である。To explain in the 71st Δ between simulations, there are 45 people in (a) and 7 - people (2n + 1) / 2... (t is the gap length of the ring lip head, and in the case of a vertical head, the main axis is as large as possible, (b) 4.5 and t-scale(2n)/2-n input becomes 74 (main output drops, -1 This is 1-be(1)
At the time of n)/2, the magnetic field emitted to the outside is zero because the numbers are the same whether it is in the H direction or in the positive and negative directions.
In 2, it is because it is exposed to the outside.
11JJも、磁極山tか一定の時、記炉り密J女が変化
するに従いコイルでの出力市11:、に落ち込み点が生
じてしまう。この記釘密現の変化は例えはイガ気ディス
クの場合、中心部と端部では送り速度が異なる為に起る
。In 11JJ, when the magnetic pole peak t is constant, a drop point occurs in the output value of the coil as the memory density changes. This change in nail density occurs, for example, in the case of a burr disk, because the feed speed is different between the center and the edges.
この出力hL圧の落込みの所を使わない様にする為、従
来記録密度は20KBP工f!(!度以上上げられなか
ったが、不発lすjは、磁気記録媒体の移動方向におけ
る磁極の巾の異なる2つ以上の磁極を前記砂、体の移動
方向に設ける事より朝来のものより記録密度を向上する
ものである。In order to avoid using this drop in the output hL pressure, the conventional recording density was 20KBP f! (Although it was not possible to raise the temperature higher than ! degree, the non-explosion lsuj was improved by providing two or more magnetic poles with different widths in the direction of movement of the magnetic recording medium in the direction of movement of the sand and body. This improves density.
図面に従って不発]!l」の実施例を説1明する。Misfire according to the drawing]! An example of "I" will be explained below.
第4図は本発明による磁気ヘッドの一実施例を示してい
る。6本の主磁aht 1’、i”、1”’を有してお
り、それぞれの厚みt′、t″、(″は次式を満足して
いる。FIG. 4 shows an embodiment of the magnetic head according to the present invention. It has six main magnets aht 1', i'', and 1'', and their respective thicknesses t', t'', and ('' satisfy the following formula).
71・・l・す
1 = −1−−1・・・ (1)武
2 3
もしt”−人であって、主磁極1″からの再生出力か零
であっても、1−−人、1−7入であるから主磁極1′
、1“′から再生出力は最大に得ることかできる。また
t″′−入であって、主磁極1”からのIJj生出力出
力であっても、1=−であるから主mNi1″からの再
生出力は最大に得ることができる。すなわち884図に
示す磁気ヘッドを用いて再生すれば、第3図に示すよう
なとびとびの再生1)力の落ち込みは現われず、高密度
記録の再生が可能となる。71...l・su1 = -1--1... (1) Take2 3 Even if there are t"- people and the reproduction output from the main magnetic pole 1" is zero, there will be 1-- people. , since it is a 1-7 input, the main magnetic pole 1'
, 1"' can obtain the maximum reproduction output.Also, even if it is t"'-input and the IJj raw output is from the main magnetic pole 1", since 1=-, the maximum reproduction output can be obtained from the main mNi1". The playback output can be maximized. That is, if the magnetic head shown in FIG. 884 is used for reproduction, the irregular reproduction 1) drop in force as shown in FIG. 3 will not occur, and high-density recording can be reproduced.
この場合記録密度あ」−限を決めるのは、導体の磁化の
強さであり、記録再生特性の例は第5図の如く、なだら
かな減衰を示す。In this case, the limit of the recording density is determined by the strength of magnetization of the conductor, and an example of the recording/reproducing characteristics shows a gradual attenuation as shown in FIG.
記録時には、最大の磁束f3度を与える磁極(第4図の
場合では主値極丁)によってのみ磁化されるので、本発
明による磁気ヘッドをそのまま使うことができる。During recording, the magnetic head according to the present invention can be used as is because it is magnetized only by the magnetic pole that provides the maximum magnetic flux f3 degrees (the principal value pole in the case of FIG. 4).
第6図に、本発明の他の実施例を示す0いわゆ 5−
る薄膜ヘッドの製造法を個用したものである。強磁71
1層A′、A”、A’/のそれぞれのj9厚は前述の(
1)式に佳かう。導体j・シBLj絶線体層Cの中に埋
め込まれたものである。FIG. 6 shows a method for manufacturing a thin film head according to another embodiment of the present invention. Ferromagnetic 71
The j9 thickness of each layer A', A'', A'/ is as described above (
1) Appropriate for the ceremony. The conductor j/BLj is embedded in the disconnected wire layer C.
垂直磁気記録にわいて、高密度記録領域1における再生
出力のとびとびの落ち込みが出現しないので、従来のも
のに比べ尚密度記録領域か可能となり、再生出力が波長
によって左右される事なく安定した再生出力をイ4する
ことができる。With perpendicular magnetic recording, since there is no jump in the playback output in the high-density recording area 1, it is possible to achieve a higher density recording area than in the conventional system, and stable playback is achieved without the playback output being affected by the wavelength. The output can be converted to 4.
また磁気ディスク装置では先に述べた様に記・緑波長は
連続的に変化するのが一般的である。ずなわち入−v
/ fなる閃係があり、円周上の位数によりv!、を変
化する。(ここで入は記録波長、VはヘッドとlV1体
の相対体皮、fは記録周波数である)このような装置で
は、再生出力が波長によって圧右されることのない本発
明による磁気ヘッドを使用することは非常に宿料となる
。Furthermore, in magnetic disk drives, as mentioned above, the green wavelength generally changes continuously. Zunawachiiri-v
/ There is a flasher f, and depending on the order on the circumference, v! , change. (Here, in is the recording wavelength, V is the relative body skin of the head and lV1 body, and f is the recording frequency.) In such a device, the magnetic head according to the present invention, in which the reproduction output is not influenced by the wavelength, is used. It would be very expensive to use it.
第1図は、従来の世直磁化記録再生ヘッドを示す。
6−
第2図は、従来の他の垂直磁化記麩(Ij生ヘッドを示
す。
第6回(J1従来の(心気ヘッドを用いたときの記録「
jj生時特性一例を示す。
第4図は、本発明による磁気ヘッドの一例を示j’t)
第5図(J1本発明による肴ニに気ヘッドを用いたとき
の記録書生竹性の−Bすをボ丁。
第6図TJ、210む明による鼓′気ヘッドの1[(も
の実h115示ず0
図中初号、
1・・主1ム砲 2゛袖助磁41U46・・フ
ィル 4・・垂直磁化膜5・・尚透磁率j曽
6・・記録庇体、!、1.似7・・着磁方向
1′、1゛′、1″′・・主化槓lA′、 に′、
X′・・頒イ藏’f’、l:I9グ、 B ・・頑1.
f4’ Nt−7−
第2図
第 4m
第 6 図
し
第 7 図
(a)(b)FIG. 1 shows a conventional straight magnetization recording/reproducing head. 6- Figure 2 shows another conventional perpendicular magnetization recording head.
An example of jj birth characteristics is shown below. FIG. 4 shows an example of the magnetic head according to the present invention. Figure TJ, 1 [(Mono actual h115 not shown) First issue in the figure, 1. Main gun 2. Sleeve auxiliary magnet 41U46. Fill 4. Perpendicular magnetization film 5.・Magnetic permeability j
6...Record cover! , 1. Similar 7...Magnetization direction
1', 1゛', 1'''...Mainization lA', ni',
X'... Distribution 'f', l: I9gu, B... Strong 1.
f4' Nt-7- Figure 2 4m Figure 6 Figure 7 (a) (b)
Claims (1)
し、且つ杓数個が接して配ttJt、たことを特徴とす
る(l!:lk磁磁化記録化生ヘッドThe main magnetic poles having different thicknesses are brought into contact with each other in the moving direction of the recording medium, and several ladles are arranged in contact with each other (l!: lk magnetization recording head).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14240081A JPS5845615A (en) | 1981-09-11 | 1981-09-11 | Vertical magnetizing recording and reproducing head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14240081A JPS5845615A (en) | 1981-09-11 | 1981-09-11 | Vertical magnetizing recording and reproducing head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5845615A true JPS5845615A (en) | 1983-03-16 |
Family
ID=15314466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14240081A Pending JPS5845615A (en) | 1981-09-11 | 1981-09-11 | Vertical magnetizing recording and reproducing head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5845615A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0861462A (en) * | 1994-06-23 | 1996-03-08 | Hyundai Motor Co | Power train of automatic transmission for car |
-
1981
- 1981-09-11 JP JP14240081A patent/JPS5845615A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0861462A (en) * | 1994-06-23 | 1996-03-08 | Hyundai Motor Co | Power train of automatic transmission for car |
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