JPS60217507A - Vertical magnetic head - Google Patents

Abstract

PURPOSE:To produce easily a composite magnetic head which has a sufficiently small space between a main magnetic pole and erasion magnetic poles and is free from the mutual interference between both magnetic poles, by holding the main magnetic pole between two substrates with erasion magnetic poles set in the grooves formed at both sides of the main magnetic pole. CONSTITUTION:A nonmagnetic substance block 18 is joined to a magnetic substance block 19 of high permeability to obtain a substrate 17. A main magnetic pole 26 is held between the substrate 17 and a substrate 27 having the same structure as the substrate 17. Then erasion magnetic poles 25 made of magnetic films of high permeability are set on the bottom surfaces of two grooves 23 formed in parallel to each other at both sides of the pole 26. The signal windings are provided to the magnetic substance parts of both substrates 17 and 27. In such a constitution, the original record signal is recorded with the pole 26 in a recording mode and at the same time recorded at both sides of the pole 26 by the poles 25 at different azimuth angles. In a reproduction mode the levels of signals reproduced by the poles 25 can be reduced enough. Thus it is possible to obtain a composite head which has a sufficiently small space between poles 26 and 25 and is free from the mutual interference between both poles.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はトンネル消去機能に等価な機能をもたせた垂直
記録再生用の磁気ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic head for perpendicular recording and reproducing which has a function equivalent to a tunnel erase function.

従来例の構成とその問題点 すでに良く知られているように、たとえばフロッピー磁
気ディスク装置等の、ヘッドトラッキングにサーボ機能
を有しない簡易なディスク装置においては、トラッキン
グミス等により生ずるエラーやクロストークを防止する
ため、記録トラックの両周辺をトンネル消去することが
行われる。これに従い磁気ヘッドにも、いわゆるトンネ
ル消去ヘッドを組込んだ複合タイプのヘッドが用いられ
る。第１図は従来の水平記録リングタイプヘッドの場合
の構成例を示すもので、１が記録再生用ギャップ、２が
トンネル消去用ギャップである。Conventional configurations and their problemsAs is already well known, in simple disk drives that do not have a servo function for head tracking, such as floppy magnetic disk drives, errors and crosstalk caused by tracking mistakes etc. To prevent this, tunnel erasing is performed on both sides of the recording track. Accordingly, a composite type head incorporating a so-called tunnel erase head is also used as a magnetic head. FIG. 1 shows an example of the configuration of a conventional horizontal recording ring type head, where 1 is a recording/reproducing gap and 2 is a tunnel erasing gap.

このような磁気ヘッドの機能についてはすでに良く知ら
れているので詳しい説明は省略する。Since the function of such a magnetic head is already well known, detailed explanation will be omitted.

さて近年垂直磁気記録がさかんになるに従って。Now, as perpendicular magnetic recording has become popular in recent years.

垂直磁気ヘッドにもこの様なトンネル消去機能の付与さ
れたヘッドの実現が要請されて来ている。There has also been a demand for the realization of a perpendicular magnetic head that is provided with such a tunnel erase function.

第２図、第３図はそれぞれすでに提案されたトンネル消
去付きの垂直ヘッドの構成例を示す図である。それぞれ
の図（、）は平面図、図（ｂ）は断面図である。FIGS. 2 and 3 are diagrams each showing an example of the configuration of a vertical head with tunnel erasure that has already been proposed. Each figure (,) is a plan view, and figure (b) is a sectional view.

第２図はトンネル消去部分を垂直消去ヘッドタイプとし
たものである。３は記録再生用主磁極。In FIG. 2, the tunnel erasing portion is of a vertical erasing head type. 3 is the main magnetic pole for recording and reproduction.

４はフェライト等による磁性体ブロック、６は記録再生
用巻線であり、これらは周知のいわゆる主磁極励磁型垂
直記録再生ヘッドを構成している。4 is a magnetic block made of ferrite or the like, and 6 is a recording/reproducing winding, which constitute a well-known so-called main pole excitation type perpendicular recording/reproducing head.

又６は消去用磁極、７はフェライト等による磁性体ブロ
ック、８は消去用巻線であシ、これらも主磁極励磁型の
垂直消去ヘッドを構成している。Further, 6 is an erasing magnetic pole, 7 is a magnetic block made of ferrite or the like, and 8 is an erasing winding, which also constitute a main pole excitation type vertical erasing head.

一方第３図はリング形のトンネル消去ヘッドを組合せた
ものである。記録再生部分は第２図の例と全く同一であ
るが、消去部分はリングコアｅ。On the other hand, FIG. 3 shows a combination of ring-shaped tunnel erase heads. The recording/reproducing part is exactly the same as the example in FIG. 2, but the erasing part is ring core e.

消去用ギャップ１０．消去巻線等より成るリング形消去
ヘッド１１により構成されている。Erasing gap 10. It is composed of a ring-shaped erasing head 11 made of an erasing winding or the like.

第２図、第３図のヘッドの問題点は以下のと５９である
。すなわち主磁極励磁形の垂直ヘッドにおいては、記録
再生効率を十分高くするために。The problems with the heads shown in FIGS. 2 and 3 are as follows. In other words, in the main pole excitation type perpendicular head, in order to sufficiently increase the recording and reproducing efficiency.

信号巻線は記録媒体対接面（第２．第３図中の１２）に
十分接近させる（たとえば数１００μｍ以下）必要があ
ることが知られている。すなわち励磁位置が、第４図の
如く媒体対接面１２より大きく離れると効率が大巾に低
下することが知られる。このだめ巻線配置は第２図、第
３図のようにする必要があり、この巻線の存在のために
必然的に記録磁極と消去磁極（又は消去ギヤノブ）との
間距離ｌを十分に小さくするのが困難になる。ところが
、磁気ディスクの記録フォーマット上の要請からはこの
距離ｌはたとえば数１００μ、ｍ以下と小さく、近年の
小形化されたディスク用ヘッドの場合は極端には２００
μｍ以下という場合もある。It is known that the signal winding needs to be placed sufficiently close (for example, several hundred μm or less) to the recording medium contacting surface (12 in FIGS. 2 and 3). That is, it is known that when the excitation position is far away from the medium contacting surface 12 as shown in FIG. 4, the efficiency is significantly reduced. The arrangement of this dead winding must be as shown in Figures 2 and 3, and due to the existence of this winding, the distance l between the recording magnetic pole and the erasing magnetic pole (or erasing gear knob) must be kept sufficiently large. It becomes difficult to make it smaller. However, due to the requirements of the magnetic disk recording format, this distance l is as small as, for example, several hundreds of micrometers or less, and in the case of recent miniaturized disk heads, it can be as small as 200 μm or less.
In some cases, it is less than μm.

又このように記録媒体対接面に接近して配された巻線の
ために、消去側の構成が犠牲となって。Also, because the windings are disposed close to the surface facing the recording medium, the configuration on the erasing side is sacrificed.

第２図、第３図のように消去効率の低い（すなわち磁路
が長い、励磁位置が媒体対接面から遠い等）構造を強い
られることとなる。As shown in FIGS. 2 and 3, a structure with low erasing efficiency (that is, a long magnetic path, an excitation position far from the surface in contact with the medium, etc.) is forced.

一方これらの問題とは逆に記録再生ヘッドと消去ヘッド
の相互干渉の点からは１両者を接近させるのは好ましく
ないという相反する問題が存在する。この干渉は当然リ
ングヘッドに比して磁気回路がより開磁路に近い垂直ヘ
ッドにおいて強くなり、第２図のような記録再生と消去
がともに垂直ヘッドである場合特に問題は深刻である。On the other hand, contrary to these problems, there is a contradictory problem in that it is undesirable to bring the recording/reproducing head and the erasing head close to each other from the point of view of mutual interference between them. Naturally, this interference is stronger in a vertical head whose magnetic circuit is closer to an open magnetic path than in a ring head, and the problem is particularly serious when the vertical head is used for both recording and reproduction as shown in FIG. 2.

この干渉の内容は主に（１）消去磁界が記録磁極にクロ
スフィードする。（２）記録磁界が消去磁極にクロスフ
ィードする。（３）再生時、消去磁極がオフトラック等
によりひろった信号が再生ヘッドにクロストークする等
である。The main causes of this interference are (1) cross-feeding of the erasing magnetic field to the recording magnetic pole; (2) The recording magnetic field crossfeeds to the erase magnetic pole. (3) During reproduction, the signal picked up by the erase magnetic pole off-track or the like may cause crosstalk to the reproduction head.

以上述べた問題を解決する方法として、第６図に示した
ような構成の複合ヘッドが提案されている。同図におい
て３は記録再生用主磁極、′４は磁性体ブロック、１３
は３に対し非平行に配された消去用磁極、１４は消去用
磁極１３との間の磁気的結合を適切に保って設けられた
磁性体ブロック。As a method for solving the above-mentioned problems, a composite head having a configuration as shown in FIG. 6 has been proposed. In the figure, 3 is the main magnetic pole for recording and reproducing, '4 is a magnetic block, 13
14 is an erasing magnetic pole disposed non-parallel to the erasing magnetic pole 13, and 14 is a magnetic block provided to maintain appropriate magnetic coupling with the erasing magnetic pole 13.

１２は磁性体ブロック４と同１４の両方の磁性体に共通
に巻かれた記録・消去・再生兼用巻線である。消去磁極
１３は消去磁束の流れる方向にその磁化容易軸を向ける
等の手段で同方向の初透磁率が主磁極３の初透磁率より
十分低くなるようになされている。Reference numeral 12 denotes a recording/erasing/reproducing winding that is commonly wound around the magnetic material of both the magnetic material block 4 and the magnetic material block 14. The erase magnetic pole 13 is made such that its initial magnetic permeability in the same direction is sufficiently lower than the initial magnetic permeability of the main magnetic pole 3 by means such as orienting its axis of easy magnetization in the direction in which the erase magnetic flux flows.

さてこのような構成のヘッドで巻線１２に信号電流を流
して記録を行うと、主磁極部分は第６図１６の、又消去
磁極は同図１６のような記録を行う。これを再生すると
き、主磁極は１５の部分をそのまま再生するが、消去磁
極はその初透磁率が十分低く設定され、更に巻線部の磁
性体１４との間のスペースにより適切な磁気抵抗が与え
られているので、１６の部分の記録の再生はほとんど行
われない。ヘッドがオフトラックして再生する場合でも
、主磁極はアジマスロスのために１６の部分の記録を十
分低いレベルでしか再生せず、主磁極の１５の部分に重
なった領域からの再生が主に行われる。なお記録のアン
ペアターンは主磁極による記録が最適となるように設定
し、そのアンペアターンにて消去磁極から発生する磁界
が古い記録が書きかえられるに必要な最小量となるよう
に１３と１４の間の磁気的結合度が選択される。Now, when recording is carried out by passing a signal current through the winding 12 with a head having such a configuration, the main magnetic pole portion performs recording as shown in FIG. 16, and the erase magnetic pole performs recording as shown in FIG. 16. When reproducing this, the main magnetic pole reproduces the part 15 as it is, but the initial magnetic permeability of the erased magnetic pole is set to be sufficiently low, and the space between it and the magnetic body 14 in the winding section allows for an appropriate magnetic resistance. Given this, the playback of the 16th part of the recording is almost never done. Even when the head plays off-track, the main magnetic pole only reproduces the recording in the 16th section at a sufficiently low level due to azimuth loss, and reproduction is mainly performed from the area overlapping the 15th section of the main magnetic pole. be exposed. The recording ampere turns are set so that recording by the main magnetic pole is optimal, and the magnetic field generated from the erase magnetic pole at the ampere turns is set to the minimum amount necessary for old records to be rewritten. The degree of magnetic coupling between is selected.

このように第６図の構造は、第２図、第３図で述べたよ
うな消去部分を独立して設けたヘッドと機能的には等価
であシ、かつ巻線を最適位置に配してなお主磁極と消去
磁極との間隔を十分小さく出来、更に主磁極と消去磁極
との間の相互干渉を考える必要がない。In this way, the structure shown in Fig. 6 is functionally equivalent to the head in which the erasing section is provided independently as described in Figs. Furthermore, the distance between the main magnetic pole and the erase magnetic pole can be made sufficiently small, and there is no need to consider mutual interference between the main magnetic pole and the erase magnetic pole.

しかしながら従来、このようなヘッドのよシ具体的で実
用的な構造は提示されていない。However, until now, a more specific and practical structure for such a head has not been proposed.

発明の目的 本発明の目的は上記第６図の構成の複合ヘッドの、実施
が容易で製造工程が簡単な具体的構造を提案することに
ある。OBJECTS OF THE INVENTION An object of the present invention is to propose a concrete structure of the composite head having the structure shown in FIG. 6, which is easy to implement and whose manufacturing process is simple.

発明の構成 本発明ではまず、略直方体形状の非磁性体ブロックと高
透磁率磁性体ブロックを接谷し、その接合面に略垂直な
１つの外面が主磁極面を構成し。Structure of the Invention In the present invention, first, a substantially rectangular parallelepiped-shaped non-magnetic block and a high magnetic permeability magnetic block are joined together, and one outer surface substantially perpendicular to the joint surface constitutes the main pole surface.

又接合面に略平行な非磁性体側の外面が磁気記録媒体対
接面を構成するような複合基板を形成する。Further, a composite substrate is formed such that the outer surface on the non-magnetic material side, which is substantially parallel to the bonding surface, constitutes the surface that faces the magnetic recording medium.

主磁極面には接合面（従って媒体対接面）に略垂直な方
向に２条の平行溝を形成し、その溝底面は接合面（従っ
て媒体対接面）に略垂直でかつ主磁極面に非平行とする
。Two parallel grooves are formed on the main pole surface in a direction substantially perpendicular to the bonding surface (therefore, the media contacting surface), and the bottom surface of the groove is substantially perpendicular to the bonding surface (therefore, the medium contacting surface) and is parallel to the main pole surface. be non-parallel to .

この２条の溝にはさまれた主磁極面には主磁極を形成し
、又溝底面には消去磁極を形成する。ここで主磁極は媒
体対接面に平行な方向の磁化容易軸を有する異方性を付
与して、記録再生磁束の流れる方向の初透磁率を大とし
、記録再生感度を高める。又消去磁極は媒体対接面に垂
直な方向の磁化容易軸を有する異方性を付与してこの方
向の初透磁率を低くするとともに、基板の高透磁率磁性
体の部分と適切な磁気抵抗をもって対向する様に構成し
、主磁極の記録再生感度に比べて適切に抑制された記録
（すなわち消去）感度と十分に抑制された再生感度を持
たせる。A main pole is formed on the main pole surface sandwiched between the two grooves, and an erase magnetic pole is formed on the bottom surface of the groove. Here, the main magnetic pole is given anisotropy with an axis of easy magnetization parallel to the surface in contact with the medium, increasing the initial magnetic permeability in the direction in which the recording and reproducing magnetic flux flows, thereby increasing the recording and reproducing sensitivity. In addition, the erase magnetic pole has anisotropy with an axis of easy magnetization perpendicular to the surface in contact with the medium to lower the initial magnetic permeability in this direction, and it also has an appropriate magnetic resistance with the high permeability magnetic material part of the substrate. The magnetic poles are configured such that they face each other with the main magnetic pole, and have appropriately suppressed recording (that is, erasing) sensitivity and sufficiently suppressed reproduction sensitivity compared to the recording/reproducing sensitivity of the main magnetic pole.

信号巻線は基板の高透磁率磁性体の部分に巻回し、これ
により記録、消去、再生の各巻線を兼用する。The signal winding is wound around a high-permeability magnetic material portion of the substrate, thereby serving as the recording, erasing, and reproducing windings.

以上のような構成によって、記録動作時には本来の記録
信号を主磁極によって記録し、同時に消去磁極によって
、上記主磁極による記録の両側部に記録信号を、主磁極
による記録とは異なるアジマス角で記録する。再生時に
は主磁極からは本来の記録信号が再生される一方、消去
磁極は上記の配慮がなされているので、上記両側部から
の消去磁極による再生信号レベルは十分低い。更に再生
時ヘッドがオフトラックした場合でも、主磁極はアジマ
スロスによって上記両側部の記録を十分低いレベルでし
か再生しない。このように独立したトンネル消去ヘッド
を持つ場合と等価な動作が得られる。With the above configuration, during a recording operation, the main magnetic pole records the original recording signal, and at the same time, the erase magnetic pole records the recording signal on both sides of the recording by the main magnetic pole at an azimuth angle different from that recorded by the main magnetic pole. do. During reproduction, the original recording signal is reproduced from the main magnetic pole, while the above consideration has been taken for the erase magnetic pole, so the level of the reproduced signal from the erase magnetic poles from both sides is sufficiently low. Furthermore, even if the head goes off-track during reproduction, the main pole will reproduce the recording on both sides only at a sufficiently low level due to azimuth loss. In this way, an operation equivalent to having an independent tunnel erase head can be obtained.

実施例の説明 第７図は本発明の一実施例の分解斜視図、第８図は斜視
図である。第７図において１７は略直方体外形の第１の
基板であって、非磁性体ブロック１８と高透磁率磁性体
ブロック１９を接合してなるものである。その接合面２
ｏは上記第１の基板の上面２１（主磁極面と規定する）
に略垂直であυ、又ヘッド完成後記録媒体対接面をなす
面２２に略平行になされている。上記主磁極面２１には
２条の平行な溝２３が形成されており、その内のシ寸法
２４は所定の主磁極中（すなわち記録再生トラック巾）
に略等しい。又溝２３の長手の方向は上記接合面２ｏに
略垂直であり、溝２３の底面は上記主磁極面２１に非平
行であってかつ上記接合面２０に略垂直である。溝２３
の底面が上記主磁極面２１となす角度は２条の溝２３に
ついて略等しく、２つの底面は図示のように相互にハの
字形（又は逆ハの字形）の関係になされている。溝２３
の巾は所定の消去磁極中（すなわち消去トラック巾）に
略等しい。DESCRIPTION OF THE EMBODIMENT FIG. 7 is an exploded perspective view of an embodiment of the present invention, and FIG. 8 is a perspective view. In FIG. 7, reference numeral 17 denotes a first substrate having a substantially rectangular parallelepiped external shape, and is formed by joining a non-magnetic block 18 and a high permeability magnetic block 19. The joint surface 2
o is the upper surface 21 of the first substrate (defined as the main pole surface)
It is substantially perpendicular to υ, and is substantially parallel to the surface 22 which will be the surface that will contact the recording medium after the head is completed. Two parallel grooves 23 are formed in the main pole surface 21, and the groove 24 of the grooves is set in a predetermined main pole (that is, the recording/reproducing track width).
approximately equal to. Further, the longitudinal direction of the groove 23 is approximately perpendicular to the joint surface 2o, and the bottom surface of the groove 23 is non-parallel to the main pole surface 21 and approximately perpendicular to the joint surface 20. Groove 23
The angles that the bottom surfaces of the two grooves 23 make with the main pole surface 21 are approximately equal, and the two bottom surfaces are in a V-shaped (or inverted V-shaped) relationship with each other as shown. Groove 23
The width of is approximately equal to the width of a predetermined erase magnetic pole (ie, erase track width).

第７図中２６は高透磁率磁性膜よりなる消去磁極であり
、非磁性スペーサー（図示せず）を介して上記溝２３の
底面に配される。この非磁性スペーサーはその厚さによ
り消去磁極２６と磁性体ブロック１９との間の磁気抵抗
を調整するだめのものである。In FIG. 7, reference numeral 26 denotes an erase magnetic pole made of a high permeability magnetic film, which is arranged on the bottom surface of the groove 23 with a non-magnetic spacer (not shown) interposed therebetween. This non-magnetic spacer is used to adjust the magnetic resistance between the erase magnetic pole 26 and the magnetic block 19 depending on its thickness.

第７図中２６は高透磁率磁性膜よりなる記録再生用主磁
極であり、上記主磁極面上の、上記２条の溝２３にはさ
まれた領域に配される。In FIG. 7, reference numeral 26 denotes a main magnetic pole for recording and reproducing made of a high permeability magnetic film, and is arranged in an area sandwiched between the two grooves 23 on the main magnetic pole surface.

第７図中２７はへラドカバーとなる第２の基板であって
、非磁性体であっても良いが、後述の巻線と主磁極２６
０カプリングを良好とするため。Reference numeral 27 in FIG. 7 denotes a second substrate serving as a helad cover, which may be made of a non-magnetic material, but includes windings and a main magnetic pole 26, which will be described later.
To achieve good 0 coupling.

非磁性体２日と高透磁率磁性体２９を接合し、接合面３
０が第１の基板の接合面２０と略同一平面となる様構成
するのが更に望ましい。第２の基板２７は第１の基板１
７に接合され、主磁極２６はこれら２基板により挾持さ
れる。The non-magnetic material 2 and the high permeability magnetic material 29 are joined, and the joining surface 3
It is more preferable to configure the bonding surface 20 to be substantially coplanar with the bonding surface 20 of the first substrate. The second substrate 27 is the same as the first substrate 1
7, and the main magnetic pole 26 is sandwiched between these two substrates.

図示していないが、上記溝２３は消去磁極２６を配した
後、非磁性体で充填するのが望ましい。Although not shown, it is desirable that the groove 23 is filled with a nonmagnetic material after the erase magnetic pole 26 is disposed thereon.

第８図は記録媒体対接面を所定形状に仕上げ。Figure 8 shows the surface facing the recording medium being finished into a predetermined shape.

記録、消去、再生用巻線３１を施した状態を示すもので
ある。このあと所定のヘッドスライダ−への組込み等を
経て、ヘッドは完成する。This figure shows a state in which a recording, erasing, and reproducing winding 31 is provided. Thereafter, the head is completed by assembling it into a predetermined head slider.

次に各部の構成材料の具体例を示す。まず第１゜第２の
各基板の非磁性体部分（１８及び２８）には、フォルス
テライト、チタン酸バリウム、非磁性フェライト、ガラ
ス等の非磁性セラミックが適する。又同磁性体部分（１
９及び２９）にはＭｎ〜Ｚｎフェライト、Ｎｉ−Ｚｎフ
ェライト等の酸化物磁性体が適する。これら非磁性体部
と磁性体部の接合はガラス接着によるのか望ましい。Next, specific examples of the constituent materials of each part will be shown. First, non-magnetic ceramics such as forsterite, barium titanate, non-magnetic ferrite, and glass are suitable for the non-magnetic portions (18 and 28) of each of the first and second substrates. Also, the same magnetic material part (1
9 and 29), oxide magnetic materials such as Mn-Zn ferrite and Ni-Zn ferrite are suitable. It is preferable that the non-magnetic material portion and the magnetic material portion be joined by glass bonding.

消去磁極２６としてはＦｅ−Ｎｉ合金や各種のアモルフ
ァス高透磁率材料が適する。これらは蒸着。As the erase magnetic pole 26, Fe--Ni alloy and various amorphous high permeability materials are suitable. These are vapor deposited.

スパッタ等の薄膜技術により形成する。この消去磁極は
、再生時、再生磁極としての感度を低下せしめるだめに
、溝長手方向に磁化容易軸が向く様異方性を持たせ、こ
の方向の初透磁率を低下させる。このために磁場中膜形
成や磁場中熱処理等を用いる。消去磁極の下に位置する
非磁性スペーサーとしてはＳ　ｉｏ、Ｓｉｏ２．アルミ
ナ等がＪ［７，これらも蒸着、スパック（等により形成
する。Formed using thin film technology such as sputtering. In order to reduce the sensitivity as a reproducing magnetic pole during reproduction, this erasing magnetic pole is made to have anisotropy so that the axis of easy magnetization is oriented in the longitudinal direction of the groove, thereby reducing the initial magnetic permeability in this direction. For this purpose, film formation in a magnetic field, heat treatment in a magnetic field, etc. are used. Non-magnetic spacers located under the erase magnetic pole include Sio, Sio2. Alumina etc. are also formed by vapor deposition, spacing, etc.

溝２３−を充填す７．材料としては、比較的低融点のモ
ールドガラスを用いてもよいが、モールド熱処理による
消去磁極の磁気特性劣化や、媒体対接面に露出するモー
ルドガラスの媒体との摺動による損傷等を考慮すると、
ＳｉＯ２やアルミナ等のたとえばスパッタ膜等によりこ
の溝を充填するのが望ましい。Filling the groove 23-7. Molded glass with a relatively low melting point may be used as the material, but considering deterioration of the magnetic properties of the erase magnetic pole due to mold heat treatment and damage caused by sliding of the molded glass exposed on the media contacting surface with the media, ,
It is desirable to fill this groove with, for example, a sputtered film of SiO2 or alumina.

主磁極２６は消去磁極と同様にＦｅ−Ｎｉ合金やアモル
ファス磁性体を蒸着やスパッタ等の手法によ膜形成する
。第７図では主磁極２６を第１の基板側に形成する例を
示したが、主磁極を第２の基板側に形成して両基板を接
合することも可能である。主磁極は、消去磁極とは逆に
、再生感度を確保するために、主磁極面内で媒体対接面
に平行な方向（すなわち溝長手方向に直交する方向）に
磁化容易軸をもつ異方性を付与し、再生磁束の流れる方
向の初透磁率が高くなるようにする。The main magnetic pole 26 is formed by forming a film of Fe--Ni alloy or amorphous magnetic material by vapor deposition, sputtering, or the like, similarly to the erase magnetic pole. Although FIG. 7 shows an example in which the main magnetic pole 26 is formed on the first substrate side, it is also possible to form the main magnetic pole on the second substrate side and bond both substrates. Contrary to the erase magnetic pole, the main magnetic pole is anisotropic with an axis of easy magnetization in the direction parallel to the medium contacting surface (i.e., perpendicular to the longitudinal direction of the groove) within the main magnetic pole plane in order to ensure reproduction sensitivity. to increase the initial magnetic permeability in the direction in which the reproducing magnetic flux flows.

第１の基板と第２の基板の接合はヘッドとしての長期安
定性を考慮してガラス接合によるのが好ましい。このと
き用いる接合ガラスの作業温度は。The first substrate and the second substrate are preferably bonded by glass bonding in consideration of long-term stability as a head. What is the working temperature of the bonded glass used at this time?

各基板内の接合部（２０及び３０）に用いたガラスの屈
伏点温度より低いように接合ガラスの選択を行うのが望
ましい。It is desirable to select the bonding glass so that the temperature is lower than the yield point temperature of the glass used for the bonding portions (20 and 30) in each substrate.

さて第９図は本発明の他の実施例であり、ここでは消去
磁極２６を、同図斜線部で示すように。Now, FIG. 9 shows another embodiment of the present invention, in which the erasing magnetic pole 26 is shown as a shaded area in the figure.

磁性体部分１９にかからぬように形成し、消去磁極端と
接合界面２０間の距離ｄによって、消去磁極２５と磁性
体１９との間の磁気抵抗の調整を行う。この場合には第
７図の実施例で述べた非磁性スペーサーは不必要である
。It is formed so as not to overlap the magnetic body portion 19, and the magnetic resistance between the erase magnetic pole 25 and the magnetic body 19 is adjusted by the distance d between the erase magnetic pole tip and the bonding interface 20. In this case, the non-magnetic spacer described in the embodiment of FIG. 7 is unnecessary.

第１０図は本発明の更に他の実施例であり、ここでは溝
２３の底面に溝長手方向の条痕３２を形成し、この条痕
によって消去磁極に溝長手方向に磁化容易軸をもつ形状
異方性を付与したものである。溝形成にダイシングリ−
等による機械加工を用いると上記の条痕は自然に形成さ
れ、その粗さも砥石の選択によって容易にコントロール
可能であるので、実際の製造にあたっては極めて有利で
ある。FIG. 10 shows still another embodiment of the present invention, in which a groove 23 is formed with a groove 23 longitudinally extending in the groove 23 on its bottom surface, and the eraser magnetic pole is shaped to have an axis of easy magnetization in the groove longitudinal direction. It has anisotropy. Dicing ree for groove formation
When machining is used, the above-mentioned scratches are naturally formed, and the roughness can be easily controlled by selecting the grindstone, which is extremely advantageous in actual manufacturing.

発明の効果 以上の説明より明らかなように１本発明の構造によって
、主磁極と消去磁極との間隔が十分に小さく出来、又両
者の相互干渉を考える必要のない複合ヘッドが容易に構
成量き、その構造自身単純であるために製造しやすく、
量産における効果は大である。Effects of the Invention As is clear from the above explanation, the structure of the present invention allows the distance between the main magnetic pole and the erase magnetic pole to be made sufficiently small, and also makes it possible to easily construct a composite head in which there is no need to consider mutual interference between the two. , its structure is simple and easy to manufacture.
The effect in mass production is significant.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第６図は従来例を説明するための図である。第
７図は本発明の一実施例を示す分解斜視図、第８図はそ
の外観斜視図、第９図は本発明の他の実施例を示す平面
図、第１０図はその斜視図である。 １７・・・・・基板、１８・・・・・・非磁性体ブロッ
ク、１９・・・・・高透磁率磁性体ブロック、２０・・
・・接合面、２１・・・・・主磁極面、２２・・・・・
記録媒体対接面、２３・・・・・・溝、２６・・・・・
消去磁極、２６・・・−・・記録再生用主磁極、２７・
・・・・・第２の基板、２８・・・・・非磁性体、２９
・−・・・・高透磁率磁性体、３１・・・・・・巻線、
３２・・・・・・条痕。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第２図 第３図 第４図 第５図 σ 第６図 第７図 区 Ｃ） ′　載FIGS. 1 to 6 are diagrams for explaining conventional examples. Fig. 7 is an exploded perspective view showing one embodiment of the present invention, Fig. 8 is an external perspective view thereof, Fig. 9 is a plan view showing another embodiment of the invention, and Fig. 10 is a perspective view thereof. . 17...Substrate, 18...Non-magnetic block, 19...High permeability magnetic block, 20...
...Joint surface, 21...Main pole surface, 22...
Recording medium contact surface, 23...Groove, 26...
Erase magnetic pole, 26...- Main magnetic pole for recording and reproduction, 27.
...Second substrate, 28...Nonmagnetic material, 29
・-・・・High permeability magnetic material, 31... Winding wire,
32...Striations. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5 σ Figure 6 Figure 7 Section C) '

Claims (6)

【特許請求の範囲】[Claims] （１）非磁性体ブロックと高透磁率磁性体ブロックの接
合体であって、上記接合面に略垂直な１つの外面を主磁
極面と規定し、父上記接合面に略平行な上記非磁性体側
の外面を記録媒体対接面と規定した略直方体外形の第１
の基板と、第２の基板と。 記録再生用主磁極を構成する第１の高透磁率磁性膜と、
消去磁極を構成する第２の高透磁率磁性膜と、上記第１
の基板の主磁極面に形成した２条の平行溝と、信号巻線
とからなシ、上記２条の平行溝は上記第１の磁性膜中に
略等しい相互の内の９間隔と、上記第２の磁性膜中に略
等しい各々自身の巾と、上記接合面に略垂直な溝長手方
向と、上記主磁極面に非平行かつ上記接合面に略垂直な
溝底面とを有し、上記第２の磁性膜は上記溝の底面に形
成し、上記第１の磁性膜は上記２条の溝間の主磁極面領
域において上記第１の基板と上記第２の基板により挾持
し、信号巻線が少なくとも上記第１の基板を巻回してい
ることを特徴とする垂直磁気ヘッド。(1) A bonded body of a non-magnetic block and a high permeability magnetic block, in which one outer surface substantially perpendicular to the bonded surface is defined as the main pole surface, and the non-magnetic material block substantially parallel to the bonded surface is defined as the main pole surface. The first part has an approximately rectangular parallelepiped external shape with the outer surface on the body side defined as the surface facing the recording medium.
and a second substrate. a first high permeability magnetic film constituting a main magnetic pole for recording and reproduction;
a second high permeability magnetic film constituting an erase magnetic pole;
The two parallel grooves are formed on the main magnetic pole surface of the substrate and are connected to the signal winding. the second magnetic film has substantially equal widths, a groove longitudinal direction substantially perpendicular to the bonding surface, and a groove bottom surface non-parallel to the main pole surface and substantially perpendicular to the bonding surface; A second magnetic film is formed on the bottom surface of the groove, and the first magnetic film is sandwiched between the first substrate and the second substrate in the main pole surface area between the two grooves, and the signal winding A perpendicular magnetic head characterized in that a wire is wound around at least the first substrate. （２）第２の基板を非磁性体で形成したことを特徴とす
る特許請求の範囲第１項記載の垂直磁気ヘッド。(2) The perpendicular magnetic head according to claim 1, wherein the second substrate is made of a non-magnetic material. （３）第２の基板は非磁性体ブロックと高透磁率磁性体
ブロックの接合体であシ、第１の基板と上記第２の基板
が第１の磁性膜を挾持した状態において、上記第１の基
板の接合面と上記第２の基板の接合面ば略同一平面をな
し、かつ上記第１の基板と上記第２の基板相互において
各々の非磁性体ブロック及び高透磁率磁性体ブロック同
士が略対向することを特徴とする特許請求の範囲第１項
記載の垂直磁気−ソド。(3) The second substrate is a combination of a non-magnetic block and a high permeability magnetic block, and in a state where the first substrate and the second substrate sandwich the first magnetic film, the second substrate The bonding surface of the first substrate and the bonding surface of the second substrate are substantially the same plane, and each non-magnetic block and high permeability magnetic block are mutually connected to each other between the first substrate and the second substrate. 2. The perpendicular magnetic field according to claim 1, wherein the perpendicular magnetic poles are substantially opposed to each other. （４）第２の高透磁率磁性膜は非磁性体ブロック部分の
みぞ底面にのみ配したことを特徴とする特許請求の範囲
第１項記載の垂直磁気ヘッド。(4) The perpendicular magnetic head according to claim 1, wherein the second high permeability magnetic film is disposed only on the bottom surface of the groove in the non-magnetic block portion. （５）第２の高透磁率磁性膜は溝底面の非磁性体ブロッ
ク部分及び高透磁率磁性体ブロック部分の両領域にかけ
て形成し、かつ溝底面と第２の高透磁率磁性膜の間に非
磁性スペーサーを介在させたことを特徴とする特許請求
の範囲第１項記載の垂直磁気ヘッド。(5) The second high permeability magnetic film is formed over both the non-magnetic block portion and the high permeability magnetic block portion of the groove bottom, and is between the groove bottom and the second high permeability magnetic film. The perpendicular magnetic head according to claim 1, characterized in that a nonmagnetic spacer is interposed. （６）溝底面に溝長手方向の条痕を形成したことを特徴
とする特許請求の範囲第１項、第４項または第５項記載
の垂直磁気ヘッ、ド。(6) A perpendicular magnetic head according to claim 1, 4 or 5, characterized in that groove longitudinal grooves are formed on the bottom surface of the groove.