JPS59229729A - Magnetic recording and reproducing head - Google Patents

Magnetic recording and reproducing head

Info

Publication number
JPS59229729A
JPS59229729A JP10256183A JP10256183A JPS59229729A JP S59229729 A JPS59229729 A JP S59229729A JP 10256183 A JP10256183 A JP 10256183A JP 10256183 A JP10256183 A JP 10256183A JP S59229729 A JPS59229729 A JP S59229729A
Authority
JP
Japan
Prior art keywords
head
magnetic recording
center
core
gap
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
JP10256183A
Other languages
Japanese (ja)
Inventor
Kazuo Sakai
和夫 酒井
Takao Terayama
孝男 寺山
Arata Hamano
浜野　新
Juichi Morikawa
森川　寿一
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10256183A priority Critical patent/JPS59229729A/en
Publication of JPS59229729A publication Critical patent/JPS59229729A/en
Pending legal-status Critical Current

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
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • G11B5/2651—Manufacture
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To obtain a magnetic recording/reproducing head with which the head attachment position can be easily controlled by setting the 1st head gap formed at a junction part between a center core and a C type core of one side at the center of the head width an controlling the positioning to a head base through said junction part. CONSTITUTION:A magnetic recording/reproducing head 3 is provided with a pair of C type cores 4 and 5 and a center core 6 set between both cores 4 and 5. Then two head gaps G1 and G2 are formed with junction among cores 4-6. The gap G1 is positioned approximately at the center of width L of the head 3. In other words, l1 l2 is satisfied. Thus a junction part S between the core 6 and the core 4 forming the gap G1 is used when the position is controlld to another head set at a counter position by 180 deg.. In such a way, automatic positioning is facilitated on the basis of the external form of the head 3.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、磁気記録再生用ヘッドに係り、特に磁気テー
プへの記録・再生に好適なヘッド形状を有する磁気記録
再生用ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic recording/reproducing head, and more particularly to a magnetic recording/reproducing head having a head shape suitable for recording/reproducing on a magnetic tape.

〔発明の背景〕[Background of the invention]

従来の磁気記録再生用ヘッドとしては、各異なるアジマ
ス角のヘッドキャップを有する２個のヘッドチップを互
いに近接させてヘッドベースに固定して構成したものが
用いられている。この種の画像記録再生用ヘッドは、一
般に非常に小さく、例えば、幅１ｍ程度、高さ１．５　
ｗｎ程度、厚さ０．２■程度の寸法である。このため、
２個のへラドチップをヘッドベースに高精度に位置決め
して取付けることが難しいと共に、ヘッドチップ間のす
きまのどみ詰シによ多画像の記録再生が良好で左くなる
等の問題点がある。A conventional magnetic recording/reproducing head is constructed by fixing two head chips, each having a head cap having a different azimuth angle, to a head base in close proximity to each other. This type of image recording/reproducing head is generally very small, for example, about 1 m wide and 1.5 m high.
The dimensions are approximately wn and the thickness is approximately 0.2 . For this reason,
It is difficult to position and attach the two Herad chips to the head base with high precision, and there are also problems such as poor recording and reproduction of multiple images due to the tightness of the gap between the head chips.

このため、１つのヘッドチップで２つのヘッドギャップ
を有する磁気記録再星用ヘッドの要求が高１っている。For this reason, there is an increasing demand for a magnetic recording/restaring head having two head gaps in one head chip.

この−例として特開昭５６−２５２２３号公報に記載の
ものがある。この磁気記録再生ヘッドにおいても、ＶＴ
Ｒに適用する場合にヘッドチップを１８０度対向するよ
うにヘッドベースに取付けることがある。このような場
合に、両ヘッドチップ間の位置調整が非常に面倒であり
、生産効率が良好でないという問題点がある。An example of this is described in Japanese Unexamined Patent Publication No. 56-25223. Also in this magnetic recording/reproducing head, VT
When applied to R, the head chips may be attached to the head base so as to face each other 180 degrees. In such a case, there is a problem that position adjustment between both head chips is very troublesome and production efficiency is not good.

〔発明の目的〕[Purpose of the invention]

本発明は、ヘラドル取付は位置調整が容易な磁気記録再
生用ヘッドを提供す、ることを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic recording/reproducing head whose position can be easily adjusted by attaching the head to the head.

〔発明の概要〕[Summary of the invention]

本発明は上記の目的を達成するために、一対のＣ型コア
間にセンタコアを設けて、２つのヘッドギャップを形成
した磁気記録再生用ヘッドにおいて、センタコアと一方
のＣ型コアとの接合部によって形成される第１のヘッド
ギャップを、ヘッド幅の中央に位置嬢しめ、この第１の
ヘッドギャップを形成する接合部によってヘッドベース
への位置決め調整を可能にしたものである。In order to achieve the above object, the present invention provides a magnetic recording/reproducing head in which a center core is provided between a pair of C-shaped cores to form two head gaps. The first head gap to be formed is positioned at the center of the head width, and the joint portion forming the first head gap enables positioning adjustment to the head base.

〔発明の実施例〕[Embodiments of the invention]

以下本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.

第１図は本発明の磁気記録再生用ヘッドを備えた回転ド
ラムの一例′を示すもので、図において１は回転ドラム
、１２は回転ドラム軸ＩＡと共に回転するヘッドベース
、３はヘッドベース２の先端に１８０度の間隔で対向す
るように設けられた磁気記録再生用ヘッドである。FIG. 1 shows an example of a rotating drum equipped with a magnetic recording/reproducing head according to the present invention. This is a magnetic recording/reproducing head provided at the tip so as to face each other at an interval of 180 degrees.

この磁気記録再生ヘッド３の詳細な構成を第２図を用い
て説明する。乙の図において第１図と同符号のものは同
一部分である。この磁気記録再生用ヘッド３は一対のＣ
型コア４，５とこのＣ型コア４，５間に設けたセンタコ
ア６とで構成されており、各コア４〜６の接合によって
２つのヘッドギャップＧ＋　、Ｇ２が形成されている。The detailed structure of this magnetic recording/reproducing head 3 will be explained using FIG. 2. In Figure B, parts with the same symbols as in Figure 1 are the same parts. This magnetic recording/reproducing head 3 has a pair of C
It is composed of type cores 4 and 5 and a center core 6 provided between the C-type cores 4 and 5, and two head gaps G+ and G2 are formed by joining each of the cores 4 to 6.

コア４〜６は記録再生効率を向上させるだめの合金がス
パッタ等によりギャップ部Ｇｌ、Ｇ２に付けられていて
も良いし、また、センタコア６は、絶縁物を介した２つ
以上のコアで構成することも可能である。The cores 4 to 6 may have a special alloy attached to the gap portions Gl and G2 by sputtering or the like to improve the recording/reproducing efficiency, and the center core 6 may be composed of two or more cores interposed with an insulator. It is also possible to do so.

前述したヘッドギャップＧ＋　、Ｇ２のうちの１つのヘ
ッドギャップＧ１は、ヘッド３の幅りのほぼ中央に配置
されている。即ち、ｚ、　＊ｚ、に選定されている。こ
れにより、１８０度対向した位置にある別のヘッドとの
位置を調整する・場合、第１図に示すようにヘッドギャ
ップＧｌを形成するＣ型コア４とセンタコア６との接合
部Ｓを用いることにより、ヘッド外形を規準として自動
位置決め等を容易に行うことが可能となる。One of the head gaps G+ and G2 described above, G1, is located approximately at the center of the width of the head 3. That is, z, *z, is selected. As a result, when adjusting the position with another head located 180 degrees opposite to each other, the joint S between the C-shaped core 4 and the center core 6 that forms the head gap Gl as shown in FIG. 1 can be used. This makes it possible to easily perform automatic positioning based on the head external shape.

また、本発明においては、ヘッド３のテープＴとの接触
面Ａの形状は、２つのへラドギャップＧ重、Ｇ２のほぼ
中央（即ちｅｌ中ｅｘ　）、換言するならば、センタコ
ア６の中心線Ｘ上に中心Ｏｈを有する半径Ｒによって形
成されている。このように構成したことにより、２つの
ヘッドギャップはこれらの中間に設けた中心Ｏｈを有す
る半径Ｒで形成される接触面上に位置するので、ヘッド
ギャップＧｌ、Ｇ２のギャップ深さｇｌ＋ｇ２を等しく
加工することが容易となる。また、テープＴのヘッド３
への接触は、中心線Ｘに対称となるため、ヘッド半径Ｒ
によってテープＴのヘッド３への圧力分布が第３図のよ
うに変化しても、ヘッドギャップＧｌ　、（Ｊ２で同じ
接触圧力を得ることができる。これにより、ヘッドギャ
ップＧ！。In addition, in the present invention, the shape of the contact surface A of the head 3 with the tape T is approximately the center of the two spacing gaps G, G2 (i.e., el middle ex), in other words, the center line of the center core 6. It is formed by a radius R having a center Oh on X. With this configuration, the two head gaps are located on the contact surface formed by the radius R with the center Oh located between them, so the gap depths gl+g2 of the head gaps Gl and G2 are machined to be equal. It becomes easier to do so. Also, head 3 of tape T
Since the contact with the head is symmetrical about the center line X, the head radius R
Even if the pressure distribution of the tape T on the head 3 changes as shown in FIG. 3, the same contact pressure can be obtained at the head gap Gl (J2).

Ｇ２で読み取る信号の出力レベルをほぼ等しいレベルに
調整することができる。The output level of the signal read by G2 can be adjusted to approximately the same level.

さらに、ヘッドギャップＧ２はヘッドギャップＧｌ　を
基準としてヘッド進行方向Ｂに対して後方に配置されて
いる。このように構成したことにより、中心Ｏｋの位置
は、ヘッドの幅りの中心よりもヘッド進行方向Ａに対し
て後方となる。そのだめ、ヘッド３における後方の肩部
Ｈ２よりも前方の肩部Ｈ！を低くすることができる。こ
のように構成したことによシ、磁気記録再生の場合ヘッ
ド３の前方の肩Ｈ１がテープＴと接触することがないの
で、テープＴに振動が発生しない。その結果、映像ジッ
タなどが発生せず画像に良好にすることができる。Further, the head gap G2 is arranged at the rear with respect to the head traveling direction B with respect to the head gap Gl as a reference. With this configuration, the position of the center Ok is behind the center of the width of the head in the head traveling direction A. No, the shoulder H in front of the rear shoulder H2 in the head 3! can be lowered. With this configuration, the front shoulder H1 of the head 3 does not come into contact with the tape T during magnetic recording and reproduction, so that no vibration occurs in the tape T. As a result, the image quality can be improved without causing image jitter or the like.

なお、上述の実施例はヘッド３のテープとの接触面形状
を、１つの半径Ｒによって形成したが、２つのへッドギ
ャップＧ１．Ｇ２近傍のみ同一の半径Ｒとし、ヘッドギ
ャップＧｌ、Ｇ２から離れた部分は、平面あるいは半径
Ｒの異なる形状としてもさしつかえない。また、肩Ｈ２
部に面取シ等を施こしても、これまで述べた効果に変わ
りがないことはもちろんである。さらに、本発明は、ヘ
ッドギャップが異なるアジマス角を有する場合について
述べたが、同一アジマス角を有する場合でも適用は可能
である。In the above embodiment, the shape of the contact surface of the head 3 with the tape is formed by one radius R, but two head gaps G1. The radius R may be the same only in the vicinity of G2, and the portions away from the head gap Gl and G2 may be flat or have different radii R. Also, shoulder H2
Of course, even if the portion is chamfered or the like, the effects described above will not change. Furthermore, although the present invention has been described with respect to the case where the head gaps have different azimuth angles, it is also applicable to cases where the head gaps have the same azimuth angle.

〔発明の効果〕〔Effect of the invention〕

以上詳述したように、本発明によればひラドの製作、位
置調整が容易になるばかシでなく、ヘッドへのテープの
接触を良好に保ち、テープの振動を減少できるので、安
定したヘッド出力を得ることができるものである。As described in detail above, according to the present invention, it is not only easy to manufacture and adjust the position of the tape, but also it is possible to maintain good contact between the tape and the head and reduce vibration of the tape, resulting in a stable head. It is possible to obtain output.

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

第１図は本発明のヘッドを備えた回転ドラムを示す平面
図、第２図は本発明の磁気記録再生用ヘッドの一例を示
す平面図、第３図は本発明のヘッド上のテープ圧力分布
を示す特性図である。 １・・・回転ドラム、２・・・ヘッドベース、３・・・
磁気記録再生用ヘッド、４，５・・・Ｃ型コア、６・・
・センタ第１図 箔　Ｚ　図 Ｊ　　３　　図 １参　　？敷　イｉ５ｉｉFIG. 1 is a plan view showing a rotating drum equipped with the head of the present invention, FIG. 2 is a plan view showing an example of the magnetic recording/reproducing head of the present invention, and FIG. 3 is a tape pressure distribution on the head of the present invention. FIG. 1...Rotating drum, 2...Head base, 3...
Magnetic recording/reproducing head, 4, 5... C-type core, 6...
・Center Figure 1 Foil Z Figure J 3 See Figure 1? Shiki Ii5ii

Claims (1)

【特許請求の範囲】 １、一対のＣｆｉコア間にセンタコアを設けて、２つの
ヘッドギャップを形成した磁気記録再生用ヘッドにおい
て、センタコアと一方のＣ型コアとの接合部によって形
成される第１のヘッドギャップをヘッド幅の中央に位置
せしめたことを特徴とする磁気記録再生用ヘッド。 ≠字幅の中央に位置せしめた 延長線上に中心を持つ半 径によって形成したことを特徴とする磁気記録再生用ヘ
ッド。 ３、特許請求の範囲第１項または第２項記載の磁気記録
再生用ヘッドにおいて、センタコアと他方のＣ型コアと
の接合部によって形成される第２のヘッドギャップを、
第１のヘッドギャップに対してヘッド進行方向の後方に
配置したことを特徴とする磁気記録再生用ヘッド。[Claims] 1. In a magnetic recording/reproduction head in which a center core is provided between a pair of Cfi cores to form two head gaps, a first A magnetic recording/reproducing head characterized in that the head gap is located at the center of the head width. A magnetic recording/reproducing head characterized in that it is formed by a radius having its center on an extension line located at the center of the width of the ≠ character. 3. In the magnetic recording/reproducing head according to claim 1 or 2, the second head gap formed by the joint between the center core and the other C-shaped core,
A magnetic recording/reproducing head characterized in that the head is disposed rearward in the head traveling direction with respect to a first head gap.
JP10256183A 1983-06-10 1983-06-10 Magnetic recording and reproducing head Pending JPS59229729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10256183A JPS59229729A (en) 1983-06-10 1983-06-10 Magnetic recording and reproducing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10256183A JPS59229729A (en) 1983-06-10 1983-06-10 Magnetic recording and reproducing head

Publications (1)

Publication Number Publication Date
JPS59229729A true JPS59229729A (en) 1984-12-24

Family

ID=14330638

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10256183A Pending JPS59229729A (en) 1983-06-10 1983-06-10 Magnetic recording and reproducing head

Country Status (1)

Country Link
JP (1) JPS59229729A (en)

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