JPH0636225A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPH0636225A
JPH0636225A JP19374692A JP19374692A JPH0636225A JP H0636225 A JPH0636225 A JP H0636225A JP 19374692 A JP19374692 A JP 19374692A JP 19374692 A JP19374692 A JP 19374692A JP H0636225 A JPH0636225 A JP H0636225A
Authority
JP
Japan
Prior art keywords
head
recording
magnetic head
core
magnetic
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
JP19374692A
Other languages
Japanese (ja)
Inventor
Kenji Kaneko
賢治 金子
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP19374692A priority Critical patent/JPH0636225A/en
Publication of JPH0636225A publication Critical patent/JPH0636225A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a magnetic head wherein the head is provided with a sufficient clearance with reference to a medium window, the design regarding the material and the shape of a shielding ring can be made easy, the productivity and the working property of the head can be enhanced remarkably and the cost of the head is low and the head is suitable for mass production. CONSTITUTION:A recording and reproduction gap 3 in a recording and reproduction head 7 for a magnetic head 13 which is provided with the recording and reproduction head 7 and with an erasing head 8 is formed in such a way that it is distributed unvenely toward the medium entrance side 15 than the central line 14 of the magnetic head 13 which is parallel to the recording and reproduction head 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は特に3.5”の4メガバ
イト(MB)、フロッピーディスクドライブ(FDD)
に好適な磁気ヘッドに関するものである。
FIELD OF THE INVENTION The present invention is particularly useful for 3.5 "4 megabyte (MB), floppy disk drives (FDD).
The present invention relates to a suitable magnetic head.

【0002】[0002]

【従来の技術】近年、FDDは高容量化が進み先行消去
型磁気ヘッドを用いた4MB対応機のFDDが鋭意研究
開発されている。
2. Description of the Related Art In recent years, the capacity of FDD has been increased and the FDD of 4 MB compatible machine using a preceding erasing type magnetic head has been earnestly researched and developed.

【0003】以下に従来の先行消去型磁気ヘッドについ
て説明する。図3は3.5”4MB対応FDD用の従来
の磁気ヘッドコアの斜視図であり、図4は従来の磁気ヘ
ッドの斜視図である。
A conventional prior erase type magnetic head will be described below. 3 is a perspective view of a conventional magnetic head core for a 3.5 "4 MB compatible FDD, and FIG. 4 is a perspective view of a conventional magnetic head.

【0004】1は記録再生ヘッドを構成するCコア、2
は前記記録再生ヘッドを構成するIコア、31はCコア
1とIコア2により形成される記録再生ギャップ、4は
消去ヘッドを構成するCコア、5は消去ヘッドを構成す
るIコア、6はCコア4とIコア5により形成される消
去ギャップ、7は記録再生ヘッド、8は消去ヘッドであ
り、記録再生ヘッド7と消去ヘッド8とは、ガラス・セ
ラミック・樹脂等の非磁性体9により磁気的に分離され
一体化され磁気ヘッドコア10を形成している。
Reference numeral 1 is a C core which constitutes a recording / reproducing head, and 2
Is an I core constituting the recording / reproducing head, 31 is a recording / reproducing gap formed by C core 1 and I core 2, 4 is a C core constituting an erasing head, 5 is an I core constituting an erasing head, and 6 is An erasing gap formed by the C core 4 and the I core 5, 7 is a recording / reproducing head, 8 is an erasing head, and the recording / reproducing head 7 and the erasing head 8 are made of a non-magnetic material 9 such as glass, ceramics or resin. The magnetic head core 10 is formed by being magnetically separated and integrated.

【0005】図4において、11,12は磁気ヘッドコ
ア10を挟持するセラミックスライダーA,B、13は
磁気ヘッド、14は記録再生ギャップ31に平行な磁気
ヘッド13の中心線、15は媒体入側である。
In FIG. 4, 11 and 12 are ceramic sliders A and B for sandwiching the magnetic head core 10, 13 is a magnetic head, 14 is a center line of the magnetic head 13 parallel to the recording / reproducing gap 31, and 15 is a medium entrance side. is there.

【0006】以上のように構成された磁気ヘッドについ
て、以下その動作を説明する。記録時には、記録再生ヘ
ッド7と消去ヘッド8がほぼ同時に動作し、先ず記録再
生ヘッド7に先行する消去ヘッド8が、消去ギャップ6
より漏洩した直流消去磁界により磁気記録媒体(図示せ
ず)の磁化の向きを一様に一方向にすることで消去を行
う。
The operation of the magnetic head having the above structure will be described below. At the time of recording, the recording / reproducing head 7 and the erasing head 8 operate almost at the same time, and first, the erasing head 8 preceding the recording / reproducing head 7 moves the erasing gap 6
Erasing is performed by making the direction of magnetization of the magnetic recording medium (not shown) uniform in one direction by the more leaked DC erasing magnetic field.

【0007】次に記録再生ヘッド7が、記録再生ギャッ
プ31より漏洩する入力信号に応じた交流記録磁界によ
り、消去ヘッド8により消去された磁気記録媒体に所定
の磁化を残留させていくことで記録を行う。
Next, the recording / reproducing head 7 causes a predetermined magnetization to remain in the magnetic recording medium erased by the erasing head 8 by an AC recording magnetic field corresponding to an input signal leaking from the recording / reproducing gap 31 to perform recording. I do.

【0008】再生時には、消去ヘッド8は作用せず、記
録再生ヘッド7により記録された磁気記録媒体の残留磁
化により発生する媒体表面磁束が、記録再生ヘッドのC
コア1とIコア2とに流入することで再生が行われる。
At the time of reproduction, the erasing head 8 does not act, and the medium surface magnetic flux generated by the residual magnetization of the magnetic recording medium recorded by the recording / reproducing head 7 is C of the recording / reproducing head.
Regeneration is performed by flowing into the core 1 and the I core 2.

【0009】この際磁気ヘッド13は、記録再生ギャッ
プ31がディスク回転中心線に対して媒体入側に0.3
5mmずれた位置に配置されなければ、アジマス損失等に
より他のFDDとの互換性が取れないことになる。
At this time, in the magnetic head 13, the recording / reproducing gap 31 is 0.3 on the medium entrance side with respect to the disk rotation center line.
If it is not placed at a position offset by 5 mm, compatibility with other FDDs cannot be achieved due to azimuth loss or the like.

【0010】このため前記互換性を確保するため、図4
の磁気ヘッド全体を媒体入側にずらしてアッセンブリー
していた。
Therefore, in order to ensure the above compatibility, FIG.
The entire magnetic head was moved to the medium entry side for assembly.

【0011】[0011]

【発明が解決しようとする課題】しかしながら上記従来
の構成では、互換性を確保するため磁気ヘッド全体を媒
体入側にずらすので、メディアウィンドウとのクリアラ
ンスが減少し、シールドリングの材質や形状が著しく限
定されるという問題点を有していた。その結果設計の自
由性に欠けるという問題点をも有していた。
However, in the above-mentioned conventional structure, the entire magnetic head is shifted to the medium entry side to ensure compatibility, so that the clearance with the media window is reduced and the material and shape of the shield ring are significantly reduced. It had the problem of being limited. As a result, there is also a problem that the freedom of design is lacking.

【0012】本発明は上記従来の問題点を解決するもの
で、メディアウィンドウに対して十分なクリアランスを
持ち、かつシールドリングの材質や形状に関する設計を
容易にすることができ、生産性、作業性を著しく向上さ
せるとともに低原価で量産性に適した磁気ヘッドを提供
することを目的とする。
The present invention solves the above-mentioned conventional problems, has a sufficient clearance with respect to the media window, and facilitates the design regarding the material and shape of the shield ring, thus improving productivity and workability. It is an object of the present invention to provide a magnetic head which has a significantly improved cost and is suitable for mass production at a low cost.

【0013】[0013]

【課題を解決するための手段】この目的を達成するため
に本発明の磁気ヘッドは、磁気ヘッドコア内で記録再生
ギャップを媒体入側に所定量ずらし、磁気ヘッドの中心
線が、よりディスク回転中心線に近づくよう配置したも
のである。具体的には、記録再生ヘッドと消去ヘッドを
備えた磁気ヘッドであって、記録再生ヘッドのギャップ
がギャップに平行な磁気ヘッドの中心線よりも媒体入側
に偏在して形成されてなる構成を有している。
In order to achieve this object, the magnetic head of the present invention is arranged such that the recording / reproducing gap is displaced toward the medium entrance side by a predetermined amount in the magnetic head core so that the center line of the magnetic head is closer to the disk rotation center. It is arranged so that it approaches the line. Specifically, a magnetic head including a recording / reproducing head and an erasing head, in which the gap of the recording / reproducing head is formed more eccentrically on the medium entrance side than the center line of the magnetic head parallel to the gap, Have

【0014】[0014]

【作用】この構成によって、磁気ヘッドの中心線をディ
スク回転中心線に近づけることができたので、メディア
ウィンドウとのクリアランスを増加させることができ
る。
With this structure, the center line of the magnetic head can be brought close to the center line of rotation of the disk, so that the clearance with the media window can be increased.

【0015】[0015]

【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【0016】図1は本実施例の磁気ヘッドコアの斜視図
であり、図2は磁気ヘッドの斜視図である。
FIG. 1 is a perspective view of the magnetic head core of this embodiment, and FIG. 2 is a perspective view of the magnetic head.

【0017】1は記録再生ヘッドを構成するCコア、2
は前記記録再生ヘッドを構成するIコア、4は消去ヘッ
ドを構成するCコア、5は前記消去ヘッドを構成するI
コア、6はCコア4とIコア5により形成される消去ギ
ャップ、7は記録再生ヘッド、8は消去ヘッド、9は非
磁性体、10は磁気ヘッドコア、図2において、11,
12は磁気ヘッドコア10を挟持するセラミックスライ
ダーA,B、13は磁気ヘッド、14は磁気ヘッド13
の中心線、15は媒体の入側であり、これらは従来例と
同様なものなので、同一の番号を付し説明を省略する。
3は磁気ヘッド13の中心線14よりも媒体入側15に
偏って形成された記録再生ギャップである。
Reference numeral 1 is a C core which constitutes a recording / reproducing head, and 2
Is an I core constituting the recording / reproducing head, 4 is a C core constituting an erasing head, and 5 is an I constituting the erasing head.
2, a erasing gap formed by the C core 4 and the I core 5, 7 a recording / reproducing head, 8 an erasing head, 9 a non-magnetic material, 10 a magnetic head core, and 11 in FIG.
Reference numeral 12 is a ceramic slider A, B for sandwiching the magnetic head core 10, 13 is a magnetic head, and 14 is a magnetic head 13.
The center line, 15 is the entrance side of the medium. Since these are the same as in the conventional example, the same numbers are assigned and the description thereof is omitted.
Reference numeral 3 denotes a recording / reproducing gap that is formed closer to the medium entry side 15 than the center line 14 of the magnetic head 13.

【0018】以上のように構成された磁気ヘッドについ
て、以下その動作を説明する。記録再生ギャップ3がデ
ィスク回転中心線に対して媒体入側15に記録再生・消
去の動作は従来例とほぼ同様なので説明は省略するが、
従来例と異なるのは、ずれた位置に配置されているた
め、磁気ヘッド13は全体を媒体入側にずらすことな
く、メディアウィンドウの中心にアッセンブリーするこ
とができる。
The operation of the magnetic head having the above structure will be described below. Since the recording / reproducing gap 3 is almost the same as the conventional example in the recording / reproducing / erasing operation on the medium entry side 15 with respect to the disk rotation center line, the description thereof will be omitted.
Unlike the conventional example, since the magnetic head 13 is arranged at a shifted position, the magnetic head 13 can be assembled at the center of the medium window without shifting the entire magnetic head 13 to the medium entrance side.

【0019】[0019]

【発明の効果】以上のように本発明は、記録再生ギャッ
プがディスク回転中心線よりも媒体入側に片寄って配置
されていることにより、磁気ヘッドの記録再生ギャップ
に平行な中心線とディスク回転中心線とが一致するた
め、メディアウィンドウに対して十分なクリアランスを
持つ磁気ヘッドアッセンブリーとすることができ、かつ
シールドリングの材質や形状に関する設計の自由度を著
しく向上させることができるので生産性、作業性を著し
く向上させるとともに低原価で量産性に適した磁気ヘッ
ドを実現できるものである。
As described above, according to the present invention, since the recording / reproducing gap is arranged closer to the medium entrance side than the disk rotation center line, the center line parallel to the recording / reproducing gap of the magnetic head and the disk rotation. Since the center line is aligned, the magnetic head assembly with sufficient clearance with respect to the media window can be obtained, and the degree of freedom in design regarding the material and shape of the shield ring can be significantly improved, so productivity, The magnetic head suitable for mass production can be realized while significantly improving workability and at low cost.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例における磁気ヘッドコアの斜
視図
FIG. 1 is a perspective view of a magnetic head core according to an embodiment of the present invention.

【図2】本発明の一実施例における磁気ヘッドの斜視図FIG. 2 is a perspective view of a magnetic head according to an embodiment of the present invention.

【図3】従来の磁気ヘッドコアの斜視図FIG. 3 is a perspective view of a conventional magnetic head core.

【図4】従来の磁気ヘッドの斜視図FIG. 4 is a perspective view of a conventional magnetic head.

【符号の説明】[Explanation of symbols]

1 Cコア 2 Iコア 3 記録再生ギャップ 4 Cコア 5 Iコア 6 消去ギャップ 7 記録再生ヘッド 8 消去ヘッド 9 非磁性体 10 磁気ヘッドコア 11 セラミックスライダーA 12 セラミックスライダーB 13 磁気ヘッド 14 中心線 15 媒体入側 31 記録再生ギャップ 1 C core 2 I core 3 recording / reproducing gap 4 C core 5 I core 6 erasing gap 7 recording / reproducing head 8 erasing head 9 non-magnetic material 10 magnetic head core 11 ceramic slider A 12 ceramic slider B 13 magnetic head 14 center line 15 medium insertion Side 31 Recording / playback gap

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】記録再生ヘッドと消去ヘッドを備えた磁気
ヘッドであって、前記記録再生ヘッドのギャップが前記
ギャップに平行な磁気ヘッドの中心線よりも媒体入側に
偏在して形成されていることを特徴とする磁気ヘッド。
1. A magnetic head having a recording / reproducing head and an erasing head, wherein a gap of the recording / reproducing head is formed so as to be unevenly distributed closer to a medium entrance side than a center line of the magnetic head parallel to the gap. A magnetic head characterized in that
JP19374692A 1992-07-21 1992-07-21 Magnetic head Pending JPH0636225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19374692A JPH0636225A (en) 1992-07-21 1992-07-21 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19374692A JPH0636225A (en) 1992-07-21 1992-07-21 Magnetic head

Publications (1)

Publication Number Publication Date
JPH0636225A true JPH0636225A (en) 1994-02-10

Family

ID=16313126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19374692A Pending JPH0636225A (en) 1992-07-21 1992-07-21 Magnetic head

Country Status (1)

Country Link
JP (1) JPH0636225A (en)

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