JPS62200508A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS62200508A JPS62200508A JP61042239A JP4223986A JPS62200508A JP S62200508 A JPS62200508 A JP S62200508A JP 61042239 A JP61042239 A JP 61042239A JP 4223986 A JP4223986 A JP 4223986A JP S62200508 A JPS62200508 A JP S62200508A
- Authority
- JP
- Japan
- Prior art keywords
- head
- gap
- magnetic
- amorphous
- magnetic material
- 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
- 239000000696 magnetic material Substances 0.000 claims abstract description 37
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 26
- 239000000956 alloy Substances 0.000 claims abstract description 26
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 10
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 16
- 239000011521 glass Substances 0.000 abstract description 6
- 238000005304 joining Methods 0.000 abstract description 6
- 238000004544 sputter deposition Methods 0.000 abstract description 5
- 230000004907 flux Effects 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 235000007173 Abies balsamea Nutrition 0.000 description 1
- 241000218685 Tsuga Species 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は映像信号等を磁気記録媒体上に記録または再生
するだめの磁気ヘッドに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic head for recording or reproducing video signals or the like on a magnetic recording medium.
従来の技術
従来、記録密度の向上のためには記録媒体の抗磁力（Ｈ
ａ ）を高くすることが有効であることは良く知られて
いる。そのため、近年、ＨＯが１３００〜１５００エル
ステツド（０θ）というＦｅｊ）るいはＧｏ系合金粉末
テープが実用に供されている。Conventional technology Conventionally, in order to improve the recording density, the coercive force (H
It is well known that increasing a) is effective. Therefore, in recent years, Fej) or Go-based alloy powder tapes having an HO of 1,300 to 1,500 oersted (0θ) have been put into practical use.
このような高Ｈｃテープに信号を記録、再生するには、
センダストやアモルファス材を用いた金属ヘッドが提案
されている。しかし、金属ヘッドには高周波領域での渦
電流損失による特性劣化という欠点があり、この損失を
低減させるため、フェライト材と合金磁性材との複合形
磁気ヘッドが提案されている。例えば第７図はフェライ
ト材１゜２の表面にアモルファス磁性材３，４をスパッ
タ法により堆積させ、該アモルファス層３，４の間に所
定厚の非磁性層を形成してヘッドギャップ５を形成した
ものである。６は左右の磁気コアを接合するための部材
でガラスが主として用いられる。To record and play back signals on such high Hc tapes,
Metal heads using sendust or amorphous materials have been proposed. However, metal heads have the drawback of deterioration of characteristics due to eddy current loss in the high frequency range, and in order to reduce this loss, composite magnetic heads made of ferrite material and alloy magnetic material have been proposed. For example, in FIG. 7, amorphous magnetic materials 3 and 4 are deposited on the surface of a ferrite material 1°2 by sputtering, and a nonmagnetic layer of a predetermined thickness is formed between the amorphous layers 3 and 4 to form a head gap 5. This is what I did. 6 is a member for joining the left and right magnetic cores, and glass is mainly used.
７は巻線用の窓で、その下方には後部ギャップ５′が存
在し、後部ギャップ６′の両側も合金磁性材３′。Reference numeral 7 denotes a winding window, below which there is a rear gap 5', and both sides of the rear gap 6' are also made of alloy magnetic material 3'.
４′で構成される。第７図の例ではフェライト材１゜２
の表面にアモルファス材３．４ｉスパッタ等ニより堆積
させ、該アモルファス表面を研摩してギャップ面とする
ため、ヘッドギャップ部のアモルファス材３，４の厚み
とはソ同じ厚さに後部ギヤラフ部ノアモルファス材３’
、４’が形成される。この構成ではヘッド磁気コアの
大部分をフェライト材で構成するため、合金磁性材中に
発生する渦電流損失はかなり低減できる。Consists of 4'. In the example shown in Figure 7, the ferrite material is 1°2
An amorphous material 3.4i is deposited on the surface of the rear gear rough part by sputtering or the like, and the amorphous surface is polished to form a gap surface. Amorphous material 3'
, 4' are formed. In this configuration, since most of the head magnetic core is made of ferrite material, eddy current loss generated in the alloy magnetic material can be significantly reduced.
発明が解決しようとする問題点
しかし、後部ギャップ６′の両側に存在するアモルファ
ス材３／ 、 ４１中に再生時に発生する渦電流損失に
より、ヘッドの再生効率の低下は避けられない。また、
ヘッド製造過程で、ダイヤモンドカッター等を用い切断
により而１６を得る場合、合金磁性材料３’、４’を切
断することでカッターの目づまりが発生しやすい。その
結果、切削抵抗が大きくなり、切断工程での応力により
磁気コア中にクラックが入ったり、磁気コアが破損した
りする。Problems to be Solved by the Invention However, due to eddy current loss occurring during reproduction in the amorphous materials 3/41 present on both sides of the rear gap 6', a reduction in the reproduction efficiency of the head is unavoidable. Also,
When the head 16 is obtained by cutting using a diamond cutter or the like in the head manufacturing process, the cutter is likely to become clogged due to cutting the alloy magnetic materials 3' and 4'. As a result, the cutting resistance increases, and the stress during the cutting process may cause cracks in the magnetic core or damage the magnetic core.
また、特開昭５８−１５６５１３号公報に記載のもので
は第８図に示すように、フェライトコア８゜９に突起部
１０，１１をつくり、該突起部の両側面上に合金系磁性
材１２．１３を被着した構成を提案している。この構成
では合金磁性材１２．１３の厚みが実質的に薄くなるた
め、第７図の例よりは後部ギャップ部での渦電流損失は
低減できる。Furthermore, as shown in FIG. 8, in the method described in JP-A-58-156513, protrusions 10 and 11 are formed on the ferrite core 8°9, and alloy-based magnetic material 12 is formed on both sides of the protrusion. .13 is proposed. In this configuration, since the thickness of the alloy magnetic material 12, 13 is substantially thinner, the eddy current loss in the rear gap portion can be reduced compared to the example of FIG. 7.
しかし、ヘッド製造工程で生じる磁気コアの破損は解決
されない。However, damage to the magnetic core that occurs during the head manufacturing process remains unsolved.
本発明の目的は、フェライト磁性材とアモルファス等の
合金磁性材との複合形磁気ヘッドにおいて、記録再生特
性に優れ、かつ、ヘッドの製造が容易な磁気ヘッドを提
供することである。An object of the present invention is to provide a composite magnetic head of a ferrite magnetic material and an alloy magnetic material such as amorphous, which has excellent recording and reproducing characteristics and is easy to manufacture.
問題点を解決するための手段
前記問題点を解決するために本発明は、高透磁率フェラ
イトとアモルファス合金磁性材を含めて磁気コアを構成
し、かつ、ヘッドギャップ部はアモルファス合金磁性材
により構成され、かつ、ヘッドのトラック巾を規制する
ために前記ギャップの両端部に切込み溝が形成され、か
つ、該切込み溝中にガラス等の非磁性材が充填された構
成の磁気ヘッドであって、ヘッド表面からギャップ深さ
方向の前記合金磁性材の長さを、巻線窓下端より短かく
、かつ、前記切込み溝の長さより短がくしたものである
。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a magnetic core including a high permeability ferrite and an amorphous alloy magnetic material, and a head gap portion made of an amorphous alloy magnetic material. A magnetic head having a structure in which cut grooves are formed at both ends of the gap to regulate the track width of the head, and the cut grooves are filled with a non-magnetic material such as glass, The length of the alloy magnetic material in the gap depth direction from the head surface is shorter than the lower end of the winding window and shorter than the length of the cut groove.
作用
以上のように構成することにより、記録時には高１（ｃ
を有するメタルテープでも十分に記録可能な記録磁界を
得ることが可能になるとともに、再生時の損失が低減で
きて、より大きな再生出力を得ることができる。By configuring as described above, high 1 (c
It becomes possible to obtain a recording magnetic field sufficient for recording even with a metal tape having a metal tape, and at the same time, loss during reproduction can be reduced, and a larger reproduction output can be obtained.
実施例 以下、本発明を図示の実施例に基づいて説明する。Example Hereinafter, the present invention will be explained based on illustrated embodiments.
第１図は本発明の磁気ヘッドの構成例を示す斜視図であ
る。、第１図において、２１．２２はそれぞれＭ ｎ
−Ｚ ｎフェライト材よりなる磁気コアで、該磁気コア
２１．２２のヘッドギャップ２６と対峙する面にアモル
ファス等の高飽和磁束密度を有する合金磁性材２３．２
４をスパッタ法等により堆積させ、かつ、該合金磁性材
２３．２４の間にガラス等の非磁性材の薄層を所定厚み
に堆積してヘッドギャップ２６を形成している。なお、
２６はヘッドのトラック幅を決めるためにギャップ２６
の両端に設けられた切込み溝で、該溝２６中には左右の
磁気コアを接合するための接合部材２７が充填されてい
る。２８は巻線用の窓である。FIG. 1 is a perspective view showing an example of the configuration of the magnetic head of the present invention. , in FIG. 1, 21.22 are M n
-Z A magnetic core made of n ferrite material, and an alloy magnetic material 23.2 having a high saturation magnetic flux density such as amorphous on the surface facing the head gap 26 of the magnetic core 21.22.
4 is deposited by sputtering or the like, and a thin layer of non-magnetic material such as glass is deposited to a predetermined thickness between the alloy magnetic materials 23 and 24 to form a head gap 26. In addition,
26 is a gap 26 to determine the track width of the head.
This groove 26 is filled with a joining member 27 for joining the left and right magnetic cores. 28 is a window for winding.
本実施例ではアモルファス磁性材２３．２４はへソドギ
ャソプ２５の両側のみに配されており、後部ギャップ２
６′の部分には配されていない。In this embodiment, the amorphous magnetic materials 23 and 24 are arranged only on both sides of the hemlock gap 25, and the rear gap 2
It is not arranged in the 6' part.
また、フェライトコア２１，２２とアモルファス磁性材
との境界部には突部２９が設けられ、該境部が疑似ギャ
ップとして作用し不要信号をひろうことを防止している
。Furthermore, a protrusion 29 is provided at the boundary between the ferrite cores 21, 22 and the amorphous magnetic material, and this boundary acts as a pseudo gap to prevent unnecessary signals from being picked up.
第１図におけるギャップ部を矢印Ｘの方向から見た図を
第２図に示す。なお、第２図においては、接合部材２７
をとり除いた状態が示されている。FIG. 2 shows a view of the gap portion in FIG. 1 viewed from the direction of arrow X. In addition, in FIG. 2, the joining member 27
The state is shown with .
ギャップ２５の両側に配されるアモルファス磁性材２３
．２４のヘッド表面からギャップ深さ方向の長さ人は、
ヘッド表面から巻線窓２８の下端までの距離Ｂより短か
く、かつ、ヘッド表面からトラック規制切込溝２６の下
端までの距離Ｃより短かく設定される。Amorphous magnetic material 23 arranged on both sides of the gap 25
．． The length in the gap depth direction from the head surface of 24 is:
It is set shorter than the distance B from the head surface to the lower end of the winding window 28 and shorter than the distance C from the head surface to the lower end of the track regulating groove 26.
このような構成により、高透磁率アモルファス磁性材は
、ヘッドギヤング２５０部分のみに配され、記録時には
高ＨＣを有するメタルテープでも十分に記録可能な記録
磁界を得ることが可能になる。また、パックギャップ２
６′の部分にはアモルファス磁性材が配されていないた
め、従来例に比べ再生時の損失が低減され、より大きな
再生信号を得ることができる。また、ヘッド製造工程に
おいて、ヘッドの側面３０の切断時にアモルファス磁性
材を切ることがないので、切断用カッターの目づまりが
発生せず、ヘッドの損傷が少なくなる。このように本実
施例によれば従来例の欠点を解決することが可能になる
。With this configuration, the amorphous magnetic material with high magnetic permeability is disposed only in the head gearing 250 portion, and during recording, it is possible to obtain a recording magnetic field sufficient for recording even with a metal tape having a high HC. Also, pack gap 2
Since no amorphous magnetic material is disposed in the portion 6', loss during reproduction is reduced compared to the conventional example, and a larger reproduced signal can be obtained. Further, in the head manufacturing process, since the amorphous magnetic material is not cut when cutting the side surface 30 of the head, clogging of the cutting cutter does not occur, and damage to the head is reduced. In this way, according to this embodiment, it is possible to solve the drawbacks of the conventional example.
次に本発明の磁気ヘッドを製造する方法について、その
１例を第３図以下を用いて説明する。先ず、第３図（２
Ｌ）に示すごとく、フェライト磁性材のブロック３１の
１つの面３２の１部に機械加工等により切欠部３３を入
れ段部３４を設ける。次に２つの面３２．３４表面にレ
ジスト膜を塗布し、縞状パターン３６を有するマスク３
５を重ね、光３アを照射して段部３４に縞状パターン３
６を焼付ける。その状態でエツチングすると、同図（ｂ
）に示されるように段部３４の表面には波形の凹凸面３
４′が形成される。次に、第４図（＆）に示すごとく、
平面３２および凹凸面３４′上にアモルファス等の合金
磁性材料３８をスパッタ等の方法により堆積させる。続
いて合金磁性層３８の表面を点線３９で示す位置まで研
摩し、凹凸面３４′上には合金磁性層３８が残り、かつ
面３２上の合金磁性層が取除かれたフェライト面３２′
を得る。次に点線４０で示されるように研Ｍ面３９に対
し所定の角度θを有しフェライト材３１に達する深さの
溝を、前記凹凸面３４′上の合金磁性材３８上に形成し
、第４図（ｂ）の形状を有する磁気コア半休を得る。、
すなわち、第４図（ｂ）において合金磁性層３８中に溝
４１を順次形成し、ヘッドのトランク＄４２を形成する
。前記溝４１の深さＤは、合金磁性層３８の厚みｄよシ
大で、かつ、面３２′上の溝４１の長さＥは、合金磁性
層の長さｅより大に形成される。Next, one example of a method for manufacturing the magnetic head of the present invention will be described with reference to FIG. 3 and subsequent figures. First, Figure 3 (2
As shown in L), a notch 33 is formed in a part of one surface 32 of a block 31 made of ferrite magnetic material by machining or the like, and a step 34 is provided. Next, a resist film is applied to the two surfaces 32 and 34, and the mask 3 having the striped pattern 36 is
5 and irradiate the light 3A to form a striped pattern 3 on the stepped portion 34.
Burn 6. If etching is performed in this state, the same figure (b)
), the surface of the stepped portion 34 has a corrugated uneven surface 3.
4' is formed. Next, as shown in Figure 4 (&),
An alloy magnetic material 38 such as amorphous is deposited on the flat surface 32 and the uneven surface 34' by a method such as sputtering. Subsequently, the surface of the alloy magnetic layer 38 is polished to the position indicated by the dotted line 39, leaving the alloy magnetic layer 38 on the uneven surface 34' and the ferrite surface 32' from which the alloy magnetic layer on the surface 32 has been removed.
get. Next, as shown by the dotted line 40, a groove having a predetermined angle θ with respect to the polished M surface 39 and having a depth reaching the ferrite material 31 is formed on the alloy magnetic material 38 on the uneven surface 34'. 4. Obtain a magnetic core half-hole having the shape shown in FIG. 4(b). ,
That is, in FIG. 4(b), grooves 41 are sequentially formed in the alloy magnetic layer 38 to form the trunk $42 of the head. The depth D of the groove 41 is greater than the thickness d of the alloy magnetic layer 38, and the length E of the groove 41 on the surface 32' is greater than the length e of the alloy magnetic layer.
次に前記溝４１中にガラス等の非磁性材４３を充填し、
前記面３２′を研摩し第６図のギャップ面４４を形成す
る。このようにして得られた磁気ヘッドコア半休に、巻
線窓４６を形成する。この時、該巻線窓下端とコア半休
の表面４６との距離Ｆは、前記第４図の合金磁性層３８
の長さｅより大にする。続いて、ギヤング面４４に所定
厚の５ＩＯ２等のギャップ材を堆積させた後、第８図の
ように少なくとも一方に巻線窓４６を有する２ケの磁気
へラドコア半休４７．４８ｆ：、それぞれのトラック部
４２を接した状態で接合し、ヘッドギヤング４９を有す
るギャップバーを得る。次に点線６ｏで示されるように
、溝４１のはソ中央を切断し、第１図の磁気ヘッドを得
る。Next, the groove 41 is filled with a non-magnetic material 43 such as glass,
The surface 32' is ground to form the gap surface 44 of FIG. A winding window 46 is formed in the half of the magnetic head core thus obtained. At this time, the distance F between the lower end of the winding window and the surface 46 of the half core is equal to the distance F between the alloy magnetic layer 38 in FIG.
be larger than the length e. Subsequently, after depositing a gap material such as 5IO2 with a predetermined thickness on the Guyang surface 44, two magnetic held cores 47 and 48f each having a winding window 46 on at least one side as shown in FIG. The track portions 42 are joined together in contact with each other to obtain a gap bar having a head gearing 49. Next, as shown by the dotted line 6o, the groove 41 is cut at the center to obtain the magnetic head shown in FIG.
発明の効果
本発明によれば、第６図においてギャップバーから個々
のヘッドに切断する場合、合金磁性材を切断することな
く溝中のガラス等の非磁性材とフェライト材のみを切断
することになる１゜したがつて切断用カッターの目づま
りによるヘッドの破損やクラック発生を防ぐことができ
る。また、本発明による磁気ヘッドでは、ヘッドギャッ
プ部が飽和磁束密度が高い合金磁性材で構成され、かつ
バ・ツクギャップ部は高透磁率フェライト材で構成され
るため、メタルテープ等の高Ｈａテープに対し良好なる
記録再生特性を得ることが可能になる。Effects of the Invention According to the present invention, when cutting the gap bar into individual heads in FIG. 6, only the non-magnetic material such as glass and the ferrite material in the groove can be cut without cutting the alloy magnetic material. Therefore, damage to the head and occurrence of cracks due to clogging of the cutting cutter can be prevented. Further, in the magnetic head according to the present invention, since the head gap portion is made of an alloy magnetic material with high saturation magnetic flux density, and the back gap portion is made of a high magnetic permeability ferrite material, high Ha tape such as metal tape can be used. It becomes possible to obtain good recording and reproducing characteristics.
第１図は本発明の磁気ヘッドの構成を示す斜視図、第２
図は本発明の要部拡大側面図、第３図。
第４図、第５図、第６図は本実施例の製造工程を説明す
るための斜視図、第７図、第８図は従来例を示す斜視図
である。
２１ ．２２・・・・・・フェライト磁気コア、２３゜
２４・・・・・・アモルファス層、２６・・・・・・ヘ
ッドギヤング、２５′・・・・・・後部ギャップ、２６
・・・・・・トラック規制切込溝、２７・・・・・接合
部材、２８・・・・・・巻線用窓。FIG. 1 is a perspective view showing the structure of the magnetic head of the present invention, and FIG.
FIG. 3 is an enlarged side view of the main part of the present invention. FIG. 4, FIG. 5, and FIG. 6 are perspective views for explaining the manufacturing process of this embodiment, and FIGS. 7 and 8 are perspective views showing a conventional example. 21. 22... Ferrite magnetic core, 23° 24... Amorphous layer, 26... Head gearing, 25'... Rear gap, 26
...Track regulation cut groove, 27...Joining member, 28... Winding window.
Claims (1)
磁気コアを構成し、かつヘッドギャップ部はアモルファ
ス合金磁性材により構成され、かつヘッドのトラック幅
を規制するために前記ギャップの両端部に切込み溝が形
成され、かつ該切込み溝中に非磁性材が充填された構成
の磁気ヘッドであって、ヘッド表面からギャップ深さ方
向の前記合金磁性材の長さを巻線窓下端より短かく、か
つ前記切込み溝の長さより短かくしたことを特徴とする
磁気ヘッド。A magnetic core is made up of high permeability ferrite and an amorphous alloy magnetic material, and a head gap part is made of an amorphous alloy magnetic material, and cut grooves are provided at both ends of the gap to regulate the track width of the head. and a non-magnetic material is filled in the cut grooves, the length of the alloy magnetic material in the gap depth direction from the head surface is shorter than the lower end of the winding window, and A magnetic head characterized by being shorter than the length of the cut groove.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61042239A JPS62200508A (en) | 1986-02-27 | 1986-02-27 | Magnetic head |
| KR1019860003213A KR910000790B1 (en) | 1985-04-30 | 1986-04-25 | Magnetic head and its production method |
| DE8686303186T DE3680236D1 (en) | 1985-04-30 | 1986-04-28 | MAGNETIC HEAD AND METHOD FOR THE PRODUCTION THEREOF. |
| EP86303186A EP0201255B1 (en) | 1985-04-30 | 1986-04-28 | Magnetic head and method of producing same |
| US07/041,283 US4769898A (en) | 1985-04-30 | 1987-04-22 | Method of producing a magnetic head |
| US07/175,605 US4888658A (en) | 1985-04-30 | 1988-04-01 | Magnetic head for magnetic recording and reproducing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61042239A JPS62200508A (en) | 1986-02-27 | 1986-02-27 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62200508A true JPS62200508A (en) | 1987-09-04 |
Family
ID=12630474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61042239A Pending JPS62200508A (en) | 1985-04-30 | 1986-02-27 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62200508A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173415A (en) * | 1987-12-28 | 1989-07-10 | Nippon Chemicon Corp | Magnetic head |
| JPH0235313U (en) * | 1988-08-23 | 1990-03-07 | ||
| TWI618657B (en) * | 2013-05-29 | 2018-03-21 | 日清製粉集團本社股份有限公司 | Rod-like body binding device, rod-like body bind and rod-like body binding method |
-
1986
- 1986-02-27 JP JP61042239A patent/JPS62200508A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173415A (en) * | 1987-12-28 | 1989-07-10 | Nippon Chemicon Corp | Magnetic head |
| JPH0235313U (en) * | 1988-08-23 | 1990-03-07 | ||
| TWI618657B (en) * | 2013-05-29 | 2018-03-21 | 日清製粉集團本社股份有限公司 | Rod-like body binding device, rod-like body bind and rod-like body binding method |
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