JPH0461008A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPH0461008A
JPH0461008A JP17295490A JP17295490A JPH0461008A JP H0461008 A JPH0461008 A JP H0461008A JP 17295490 A JP17295490 A JP 17295490A JP 17295490 A JP17295490 A JP 17295490A JP H0461008 A JPH0461008 A JP H0461008A
Authority
JP
Japan
Prior art keywords
magnetic
gap spacer
gap
cores
material part
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
Application number
JP17295490A
Other languages
Japanese (ja)
Inventor
Hiroyasu Egashira
江頭 裕康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP17295490A priority Critical patent/JPH0461008A/en
Publication of JPH0461008A publication Critical patent/JPH0461008A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To decrease the crosstalks with adjacent tracks and to increase the density of magnetic recording by locally and magnetically short circuiting the ends of two magnetic cores by a magnetic material part. CONSTITUTION:The magnetic material part 3 exposed on an opposite contact surface 10 with recording media is disposed on both or one side in the track width direction of a gap spacer 2 in the butt part of a pair of the magnetic cores 12, 12 and the ends of the two magnetic cores 12, 12 are locally and magnetically short circuited by the magnetic material part 3. The magnetic lines of force released from the end in the track width direction of the gap spacer 2 to the lateral side are subjected to the magnetic attraction effect by the magnetic material part 3 and, therefore, the leaking magnetic fields formed near the end of the gap spacer 2 have the distribution in which the magnetic fields are attracted to the magnetic material part 3 side. The influence of the leaking magnetic fields to the adjacent tracks is thus lessened. The higher track densities are obtd. in this way.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、ビデオテープレコーダ(VTR)、磁気ディ
スク装置等の磁気記録再生装置に用いられる磁気ヘッド
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 used in a magnetic recording/reproducing device such as a video tape recorder (VTR) or a magnetic disk device.

(従来の技術) 磁気ヘッドは、一対の磁性コアの突合せ部にギャップス
ペーサを介装して構成され、記録媒体との対接面に露出
する磁気ギャップ部からの漏洩磁界によって記録媒体を
磁化して信号記録を行なうため、対接面においては、両
磁性コアは互いに完全に分離され、磁気絶縁されている
(Prior Art) A magnetic head is constructed by interposing a gap spacer between a pair of magnetic cores, and magnetizes the recording medium by leakage magnetic field from the magnetic gap exposed on the surface facing the recording medium. In order to perform signal recording using both magnetic cores, the two magnetic cores are completely separated and magnetically insulated from each other on the opposing surfaces.

ところで、磁気記録の高密度化を図るためには、記録媒
体の走行方向の線記録密度を上げる方法と、記録媒体上
の信号トラック幅及びトラックピッチを狭小化し、所謂
トラック密度を高める方法とがある(例えば特開昭63
−269310号公報(GlIB5/127)参照)。
By the way, in order to increase the density of magnetic recording, there are two methods: increasing the linear recording density in the running direction of the recording medium, and narrowing the signal track width and track pitch on the recording medium to increase the so-called track density. There are (for example, Japanese Patent Application Laid-Open No. 63
-269310 (GlIB5/127)).

(解決しようとする課題) しかしながら、従来の磁気ヘッドにおいては、磁気ギャ
ップ部近傍の磁界は、記録媒体と直交する方向に形成さ
れるばかりでなく、磁気ギャップ部の端部から側方へ放
出される漏洩磁力線によって、記録媒体の隣接トラック
へ向う方向にも形成されるから、特にトラック密度の増
大を図る場合には、隣接トラックとのクロストークの問
題が生じる。
(Problem to be Solved) However, in conventional magnetic heads, the magnetic field near the magnetic gap is not only formed in a direction perpendicular to the recording medium, but also emitted laterally from the end of the magnetic gap. Since leakage magnetic lines of force are also formed in the direction toward adjacent tracks of the recording medium, a problem of crosstalk with adjacent tracks occurs, especially when trying to increase track density.

本発明の目的は、高トラツク密度化を図る場合にも隣接
トラックとのクロストークを軽減することが可能な磁気
ヘッドを提供することである。
An object of the present invention is to provide a magnetic head that can reduce crosstalk with adjacent tracks even when increasing track density.

(課題を解決する為の手段) 本発明に係る磁気ヘッドは、一対の磁性コア(12) 
(12)の突合せ部に、ギャップスペーサ(2)のトラ
ック幅方向の両側或いは片側へ、記録媒体との対接面(
10)に露出する磁性体部(3)を配備し、該磁性体部
(3)によって両磁性コア(12)(12)の端部を局
所的に磁気短絡したことを特徴とする。
(Means for Solving the Problems) A magnetic head according to the present invention includes a pair of magnetic cores (12).
(12) to both sides or one side of the gap spacer (2) in the track width direction, the surface facing the recording medium (
10) is provided, and the ends of both magnetic cores (12) (12) are locally magnetically short-circuited by the magnetic body part (3).

尚、必要に応じて一方の磁性コア(12)と磁性体部(
3)の間に、ギャップスペーサ(2)のギャップ長より
も薄い非磁性層を介在せしめてもよい。又、磁性体部(
3)の磁路方向に沿う厚さは、ギャップスペーサ(2)
のギャップ長よりも小さく形成してもよい。
In addition, if necessary, one magnetic core (12) and the magnetic body part (
3), a nonmagnetic layer thinner than the gap length of the gap spacer (2) may be interposed. In addition, the magnetic material part (
The thickness along the magnetic path direction in 3) is the thickness of the gap spacer (2).
The gap length may be smaller than that of the gap length.

(作 用) 上記磁気ヘッドにおいては、ギャップスペーサ(2)の
トラック幅方向の端部がら側方へ向って放出される磁力
線が、磁性体部(3)による磁気吸引作用を受けるため
、ギャップスペーサ(2)端部の近傍に形成される漏洩
磁界は磁性体部(3)側へ引き寄せられた分布となり、
隣接トラックに対する漏洩磁界の影響が軽減される。
(Function) In the magnetic head described above, the lines of magnetic force emitted laterally from the ends of the gap spacer (2) in the track width direction are subjected to the magnetic attraction action by the magnetic body part (3), so that (2) The leakage magnetic field formed near the end has a distribution that is attracted to the magnetic body part (3),
The influence of leakage magnetic fields on adjacent tracks is reduced.

尚、4磁性体部(3)は、両磁性コア(12)(12)
の突合せ部の端部に、ギャップスペーサ(2)に比べて
遥かに狭い領域に形成されているに過ぎないがら、ギャ
ップスペーサ(2)の作動ギャップとしての機能に影響
はない。
In addition, the 4 magnetic body parts (3) are both magnetic cores (12) (12)
Although it is formed in a much narrower area than the gap spacer (2) at the end of the abutting part, it does not affect the function of the gap spacer (2) as an operating gap.

(発明の効果) 本発明に係る磁気ヘッドによれば、隣接トラックとのク
ロストークが従来よりも軽減され、これによって磁気記
録の高密度化を図ることが可能である。
(Effects of the Invention) According to the magnetic head according to the present invention, crosstalk with adjacent tracks is reduced compared to the conventional case, and thereby it is possible to achieve higher density magnetic recording.

(実施例) 以下、図面に沿って本発明に係る磁気ヘッドの一実施例
について説明する。尚、実施例は本発明を説明するため
のものであって、特許請求の範囲に記載の発明を限定し
、或は範囲を減縮する様に解すべきではない。
(Embodiment) An embodiment of the magnetic head according to the present invention will be described below with reference to the drawings. It should be noted that the examples are for illustrating the present invention, and should not be construed as limiting the invention described in the claims or reducing its scope.

第1図に示す如く、・一対のヘッド半休(la)(lb
)の突合せ部に、ギャップスペーサ(2) (21) 
(22)を介装し、一方のヘッド半休(1a)にはコイ
ル窓(4)が開設されている。
As shown in Figure 1, a pair of heads (la) (lb)
), attach the gap spacer (2) (21) to the butt part.
(22), and a coil window (4) is opened in one half of the head (1a).

両ヘッド半休(la) (lb)は夫々、トラック幅方
向に配置した一対の非磁性基板(11)(13)の間に
積層磁性コア(12)を介装して構成されている。該積
層磁性コア(12)は、第11図に示す如< 、Fe−
Al−3L系合金からなる厚さ略2μmの磁性層(14
)とSin。
Each of the two head halves (la and lb) is constructed by interposing a laminated magnetic core (12) between a pair of non-magnetic substrates (11) and (13) arranged in the track width direction. The laminated magnetic core (12) is made of Fe-
A magnetic layer (14
) and Sin.

からなる厚さ略0.1μmの非磁性層(15)とを交互
に積層して形成されている。
It is formed by alternately laminating nonmagnetic layers (15) having a thickness of approximately 0.1 μm.

又、第1図の如く両積層磁性コア(12) (12)の
突合せ部には、ギャップスペーサ(2)のトラック幅方
向の両側に、記録媒体との対接面(1o)に露出する磁
性体部(3) (3)を介装して、該磁性体部(3)(
3)によって両磁性コア(12) (12)の端部を局
所的に磁気短絡している。磁性体部(3)は例えばフェ
ライト等の磁性資材から形成される。
In addition, as shown in FIG. 1, at the abutting portion of both laminated magnetic cores (12) (12), there is a magnetic layer exposed on both sides of the gap spacer (2) in the track width direction on the surface (1o) in contact with the recording medium. The body portion (3) (3) is interposed and the magnetic body portion (3) (
3) locally magnetically short-circuits the ends of both magnetic cores (12) (12). The magnetic body portion (3) is made of a magnetic material such as ferrite.

尚、第11図に示す如く、両積層磁性コア(12)(1
2)の突合せ部に介在するギャップスペーサ(2)には
、一方の積層磁性コア(12)に沿って非磁性層IN(
51)カ厚さ略0.05μmに形成されると共に、他方
の積層磁性コア(12)と両磁性体部(3)(3)との
間には、非磁性薄膜(5)が厚さ略0.05μmに形成
され−ている。これによって、磁性体部(3)及び非磁
性薄膜(5)の厚さは、ギャップスペーサ(2)のギャ
ップ長g(略0.2μm)に一致している。又、積層磁
性コア(12)の全幅Aが略8μmであるのに対し、磁
性体部(3)の幅Bは略0.1μmに形成される。
In addition, as shown in FIG. 11, both laminated magnetic cores (12) (1
A non-magnetic layer IN (
51) A non-magnetic thin film (5) with a thickness of approximately 0.05 μm is formed between the other laminated magnetic core (12) and both magnetic body parts (3). It is formed to have a thickness of 0.05 μm. As a result, the thicknesses of the magnetic material portion (3) and the nonmagnetic thin film (5) match the gap length g (approximately 0.2 μm) of the gap spacer (2). Further, while the full width A of the laminated magnetic core (12) is approximately 8 μm, the width B of the magnetic body portion (3) is approximately 0.1 μm.

上記磁気ヘッドにおいては、両磁性体部(3)(3)に
よって挟まれたギャップスペーサ(2)によって作動ギ
ャップが形成される。
In the magnetic head described above, an operating gap is formed by the gap spacer (2) sandwiched between the two magnetic body parts (3) (3).

第11図は上記磁気ヘッドのギヤ・ツブスペーサ(2)
の両端部近傍に生じる漏洩磁力線(9)の分布を示し、
磁性体部(3)の磁気吸引作用によって磁性体部(3)
側へ引き寄せられた磁界分布となっている。従って、漏
洩磁力線(9)による隣接トラックへの磁界の影響が軽
減され、クロストークが抑制されることになる。
Figure 11 shows the gear/tube spacer (2) of the above magnetic head.
shows the distribution of leakage magnetic field lines (9) that occur near both ends of
Due to the magnetic attraction action of the magnetic body part (3), the magnetic body part (3)
The magnetic field distribution is drawn to the side. Therefore, the influence of the magnetic field on adjacent tracks due to the leakage magnetic lines of force (9) is reduced, and crosstalk is suppressed.

これに対し、第12図の如く磁性体部の設けられていな
い従来の磁気ヘッドにおいては、ギヤ、ツブスペーサ(
20)の両端部からの漏洩磁力線(90)は、ギャップ
スペーサ(20)から遠方にまで広がり、前述の如くク
ロストークの問題が生じていたのである。
On the other hand, in a conventional magnetic head without a magnetic body part as shown in Fig. 12, gears, tube spacers (
The leakage magnetic lines of force (90) from both ends of the gap spacer (20) spread far away from the gap spacer (20), causing the problem of crosstalk as described above.

又、第11図に示す本発明の磁気ヘッドにおいては、磁
性体部(3)がギャップ長gよりも薄く形成され、磁性
体部(3)と積層磁性コア(12)との間に非磁性薄膜
(5)が介装されているから、磁性体部(3)による磁
気短絡部の磁気抵抗は、作動ギヤツブ郡全体の磁気抵抗
に比べて十分に大きくなり、ギャップスペーサ(2)の
作動ギャップとしての機能は失われない。
Further, in the magnetic head of the present invention shown in FIG. 11, the magnetic body part (3) is formed thinner than the gap length g, and a non-magnetic material is formed between the magnetic body part (3) and the laminated magnetic core (12). Since the thin film (5) is interposed, the magnetic reluctance of the magnetic short-circuit portion caused by the magnetic material portion (3) is sufficiently larger than the magnetic reluctance of the entire working gear group, and the working gap of the gap spacer (2) is It will not lose its functionality.

次に、上記磁気ヘッドの製造方法について説明する。Next, a method of manufacturing the above magnetic head will be explained.

先ず第2図に示す如く、結晶化ガラス等からなる非磁性
基板(6)上に、スパッタリング等の薄膜形成技術を用
いて、Fe−Al−8i系合金からなる厚さ2μmの磁
性薄膜と5i02からなる厚さ0.1μmの非磁性薄膜
とを交互に4層ずつ積層して、全体の厚さが略8μmの
積層部(61)を設ける。
First, as shown in FIG. 2, a 2 μm thick magnetic thin film made of Fe-Al-8i alloy and 5i02 A laminated portion (61) having a total thickness of approximately 8 μm is provided by alternately stacking four nonmagnetic thin films each having a thickness of 0.1 μm.

上記積層基板を複数層に接合して第3図に示す一体のブ
ロック(62)を作製し、該ブロック(62)を図中の
破線に沿って切断して、第4図に示す如く非磁性部(6
3)と積層磁性部(64)とが交互に形成された複合基
板(65)を得る。
A plurality of layers of the above-mentioned laminated substrate are bonded to produce an integral block (62) shown in FIG. Part (6
3) and a composite substrate (65) in which laminated magnetic parts (64) are alternately formed.

上記複合基板(65)の表面に、第5図の如く積層磁性
部(64)と交差する方向へ伸びるコイル溝(66)を
複数本凹設する。
A plurality of coil grooves (66) extending in a direction intersecting the laminated magnetic portion (64) are formed in the surface of the composite substrate (65) as shown in FIG.

次に、第7図の如く複合基板(65)表面のコイル溝(
66)に沿って伸びる帯状領域に、前記磁性体部となる
磁性薄膜(31)と、ギャップスペーサとなるSiO□
薄膜(25)とを形成する。第6図は、これらの薄膜形
成工程を表わしたもので、先ず同図(a)の如く前記帯
状領域にStowからなる非磁性膜(23)を厚さ0.
2μmに形成する。該非磁性膜(23)に対して、前記
磁性体部を設けるべき幅0,1μmの領域(第7図に示
す磁性薄膜(31)の形成領域)へ電子ビームエツチン
グを施し、該幅領域の非磁性膜(23)を除去して、溝
(24)を凹設する。その後、同図(b)の如く複合基
板(65)の全面に、Sin、薄膜(25)を厚さ0.
05μmに形成する。これによって溝(24)の底部に
も5ins薄膜(25)が形成されることになる。
Next, as shown in Fig. 7, the coil grooves (
66), a magnetic thin film (31) which becomes the magnetic body part and SiO□ which becomes a gap spacer.
A thin film (25) is formed. FIG. 6 shows the process of forming these thin films. First, as shown in FIG. 6(a), a nonmagnetic film (23) made of Stow is deposited on the band-shaped region to a thickness of 0.
Formed to 2 μm. Electron beam etching is performed on the non-magnetic film (23) to a region with a width of 0.1 μm where the magnetic body portion is to be provided (the region where the magnetic thin film (31) is to be formed as shown in FIG. 7). The magnetic film (23) is removed and a groove (24) is formed. Thereafter, as shown in FIG. 6(b), a thin film (25) of Sin is applied to the entire surface of the composite substrate (65) to a thickness of 0.
05 μm. As a result, a 5-inch thin film (25) is also formed at the bottom of the groove (24).

第6図(c)の如く、磁性薄膜(31)の上面にフェラ
イトからなる磁性薄膜(31)を厚さ0.05μmに形
成する。これによって前記溝(24)内に磁性薄膜(3
1)が充填されることになる。更に、該磁性薄膜(31
)の表面にポジフォトレジスト(7)をスピンコード法
によって厚さ略0.05μmに塗布す・る。これによっ
て、前記溝(24)上の凹部(32)(32)にもレジ
スト(7)が充填される。
As shown in FIG. 6(c), a magnetic thin film (31) made of ferrite is formed on the upper surface of the magnetic thin film (31) to a thickness of 0.05 μm. As a result, the magnetic thin film (3) is formed in the groove (24).
1) will be filled. Furthermore, the magnetic thin film (31
) A positive photoresist (7) is applied to a thickness of about 0.05 μm on the surface of the photoresist (7) using a spin code method. As a result, the recesses (32) (32) above the groove (24) are also filled with the resist (7).

その後、前記レジスト(7)に短時間の露光を施して、
レジスト(7)の表層部のみを感光せしめることにより
、第6図(d)の如く四部(32)内のレジスト(7)
を残して他のレジスト(7)を除去する。
After that, the resist (7) is exposed to light for a short time,
By exposing only the surface layer of the resist (7), the resist (7) in the four parts (32) is exposed as shown in FIG. 6(d).
, and remove the other resist (7).

上記レジスト(7)及び磁性薄膜(31)の表面に対し
て電子ビームエツチングを施し、第6図(e)の如くレ
ジスト(7)によって覆われた磁性薄膜(31)を残し
て、他の磁性薄膜(31)を除去し、5in2薄膜(2
5)を露出せしめた後、同図(f)の如く残存している
レジストを取り除く。
Electron beam etching is performed on the surfaces of the resist (7) and the magnetic thin film (31), leaving the magnetic thin film (31) covered with the resist (7) as shown in FIG. Remove the thin film (31) and replace the 5in2 thin film (2
After exposing 5), the remaining resist is removed as shown in FIG. 5(f).

上記工程を経て第7図及び第8図に示す複合基板(67
)が得られる。
After the above process, the composite substrate (67
) is obtained.

次に第4図の複合基板(65)と第7図の複合基板(6
7)とを第9図に示す如く重ね合せ、側基板をガラス接
合することによって、一体のヘッドブロック(8)を作
製する。そして、該ヘッドブロック(8)を図中の破線
に沿って切断し、第10図のへラドチップ(81)を作
製する。該ヘッドチップ(81)においては、前記磁性
薄膜(31)が磁性体部(3)となり、前記非磁性部(
63)が非磁性基板(11)(13)となり、前記積層
磁性部(64)が積層磁性コア(12)となる。
Next, the composite board (65) shown in Figure 4 and the composite board (65) shown in Figure 7.
7) and are stacked together as shown in FIG. 9, and the side substrates are glass-bonded to produce an integrated head block (8). Then, the head block (8) is cut along the broken line in the figure to produce the Herad tip (81) shown in FIG. 10. In the head chip (81), the magnetic thin film (31) becomes the magnetic part (3), and the non-magnetic part (
63) becomes the non-magnetic substrate (11) (13), and the laminated magnetic portion (64) becomes the laminated magnetic core (12).

又、前記Sin、薄膜(25)がギャップスペーサ(2
)(21)(22)となり、前記コイル溝(66)によ
ってコイル窓(4)が形成される。
Further, the Sin thin film (25) is a gap spacer (2).
)(21)(22), and the coil window (4) is formed by the coil groove (66).

最後に、上記へラドチップ(81)に対接面(lO)を
加工することにより、第1図の磁気ヘッドが完成する。
Finally, the magnetic head shown in FIG. 1 is completed by processing the contact surface (lO) on the herad chip (81).

上記実施例の説明は、本発明を説明するためのものであ
って、特許請求の範囲に記載の発明を限定し、或は範囲
を減縮する様に解すべきではない。
The above description of the embodiments is for illustrating the present invention, and should not be construed to limit or reduce the scope of the invention described in the claims.

又、本発明の各部構成は上記実施例に限らず、特許請求
の範囲に記載の技術的範囲内で種々の変形が可能である
ことは勿論である。
Further, it goes without saying that the configuration of each part of the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the technical scope of the claims.

例えば、本発明は、上記実施例の如き積層型磁気ヘッド
に限らず、薄膜磁気ヘッド、バルク型磁気ヘッド等の種
々な磁気ヘッドに実施することが可能である。
For example, the present invention is not limited to the laminated magnetic head as in the embodiment described above, but can be applied to various magnetic heads such as a thin film magnetic head and a bulk type magnetic head.

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

第1図は本発明に係る磁気ヘッドの斜視図、第2図乃至
第5図は複合基板の製造工程図、第6図(a)乃至(f
)は磁性体部及びギャップスペーサを形成するための薄
膜形成工程図、第7図は前記薄膜形成工程を経た複合基
板の斜視図、第8図は第7図の要部を拡大して示す斜視
図、第9図はヘッドブロックの斜視図、第10図はへラ
ドチップの斜視図、第11図は本発明に係る磁気ヘッド
における漏洩磁力線の分布を示す平面図、第12図は従
来の磁気ヘッドにおける第11図に対応する平面図であ
る。 (11) (13)・・・非磁性基板 (12)・・・
積層磁性コア(2) (21)(22)・・・ギャップ
スペーサ(3)・・・磁性体部    (9) (90
)・・・漏洩磁力線(b) l 第4図 (d) (ε) (す 察8図
FIG. 1 is a perspective view of a magnetic head according to the present invention, FIGS. 2 to 5 are manufacturing process diagrams of a composite substrate, and FIGS. 6(a) to (f)
) is a process diagram for forming a thin film for forming a magnetic body part and a gap spacer, FIG. 7 is a perspective view of the composite substrate that has undergone the thin film forming process, and FIG. 8 is an enlarged perspective view of the main part of FIG. 7. 9 is a perspective view of the head block, FIG. 10 is a perspective view of the Herad chip, FIG. 11 is a plan view showing the distribution of leakage magnetic lines of force in the magnetic head according to the present invention, and FIG. 12 is a conventional magnetic head. FIG. 12 is a plan view corresponding to FIG. 11 in FIG. (11) (13)...Nonmagnetic substrate (12)...
Laminated magnetic core (2) (21) (22)...Gap spacer (3)...Magnetic body part (9) (90
)...Leakage magnetic field lines (b) l Fig. 4 (d) (ε) (Summary Fig. 8

Claims (1)

【特許請求の範囲】 [1]一対の磁性コア(12)(12)の突合せ部にギ
ャップスペーサ(2)を介装し、両磁性コア(12)(
12)に跨がって記録媒体との対接面(10)を形成し
た磁気ヘッドにおいて、前記一対の磁性コア(12)(
12)の突合せ部には、ギャップスペーサ(2)のトラ
ック幅方向の両側或いは片側に、対接面(10)に露出
する磁性体部(3)を配備し、該磁性体部(3)によっ
て両磁性コア(12)(12)の端部を局所的に磁気短
絡したことを特徴とする磁気ヘッド。 [2]少なくとも一方の磁性コア(12)と磁性体部(
3)との間に、ギャップスペーサ(2)のギャップ長よ
りも薄い非磁性層を介在せしめた請求項1に記載の磁気
ヘッド。 [3]磁性体部(3)の磁路方向に沿う厚さは、ギャッ
プスペーサ(2)のギャップ長よりも小さく形成されて
いる請求項1に記載の磁気ヘッド。
[Claims] [1] A gap spacer (2) is interposed between the abutting portions of a pair of magnetic cores (12) (12), and both magnetic cores (12) (
12), in which the pair of magnetic cores (12) (
12), magnetic material portions (3) exposed to the opposing surface (10) are provided on both sides or one side of the gap spacer (2) in the track width direction, and the magnetic material portions (3) A magnetic head characterized in that the ends of both magnetic cores (12) (12) are locally magnetically short-circuited. [2] At least one magnetic core (12) and a magnetic body part (
2. The magnetic head according to claim 1, further comprising a nonmagnetic layer thinner than the gap length of the gap spacer (2) interposed between the gap spacer (2) and the gap spacer (2). [3] The magnetic head according to claim 1, wherein the thickness of the magnetic body portion (3) along the magnetic path direction is smaller than the gap length of the gap spacer (2).
JP17295490A 1990-06-29 1990-06-29 Magnetic head Pending JPH0461008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17295490A JPH0461008A (en) 1990-06-29 1990-06-29 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17295490A JPH0461008A (en) 1990-06-29 1990-06-29 Magnetic head

Publications (1)

Publication Number Publication Date
JPH0461008A true JPH0461008A (en) 1992-02-27

Family

ID=15951446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17295490A Pending JPH0461008A (en) 1990-06-29 1990-06-29 Magnetic head

Country Status (1)

Country Link
JP (1) JPH0461008A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10010322B2 (en) 2006-01-31 2018-07-03 Ethicon Llc Surgical instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10010322B2 (en) 2006-01-31 2018-07-03 Ethicon Llc Surgical instrument

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