JPS6157019A - Side erase magnetic head - Google Patents
Side erase magnetic headInfo
- Publication number
- JPS6157019A JPS6157019A JP17753784A JP17753784A JPS6157019A JP S6157019 A JPS6157019 A JP S6157019A JP 17753784 A JP17753784 A JP 17753784A JP 17753784 A JP17753784 A JP 17753784A JP S6157019 A JPS6157019 A JP S6157019A
- Authority
- JP
- Japan
- Prior art keywords
- erase
- core
- read
- magnetic head
- write
- 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
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
- G11B5/2652—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track with more than one gap simultaneously operative
- G11B5/2654—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track with more than one gap simultaneously operative for recording or erasing
- G11B5/2655—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track with more than one gap simultaneously operative for recording or erasing with all the gaps disposed within the track or "guard band" between tracks, e.g. with erase gaps operative on track edges, with wide erase gap followed by narrow write gap
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、側面消去を行う磁気ヘッドに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic head that performs lateral erasing.
従来の技術
磁気ディスク装置では、磁気ヘッドを所定のトラック位
置迄移動させ、情報の記録再生を行うが、トラック位置
決め精度が充分でなく、以前に記録された信号の消し残
りがＳ／Ｎ比の劣化に結びつく。この点を解消するため
、リードライトコアの両端に消去用コアを設け、不要の
信号を消去しＳ／Ｎ比を向−卜させる磁気ヘッドが広く
用いられている。In conventional magnetic disk drives, information is recorded and reproduced by moving the magnetic head to a predetermined track position, but the track positioning accuracy is not sufficient, and previously recorded signals remain unerased, causing the S/N ratio to deteriorate. lead to deterioration. To solve this problem, magnetic heads are widely used in which erasing cores are provided at both ends of a read/write core to erase unnecessary signals and improve the S/N ratio.
この消去用コアの配置に関しても、リードライトギャッ
プ線とイレーズギャップ線が互いに平行に配置されたい
わゆる１−ンネルイレーズ型の磁気ヘッドや、リードラ
イトコアと該リードライトコアの側面に間隔をおいて配
置された消去コアとの間に生じる漏洩磁束で消去する側
面消去型磁気ヘッドが知られている。Regarding the arrangement of the erasing core, there is a so-called 1-thin channel erase type magnetic head in which the read/write gap line and the erase gap line are arranged parallel to each other, or a read/write core and the side surface of the read/write core are arranged at intervals. A side erase type magnetic head is known that erases data using leakage magnetic flux generated between the magnetic head and the erase core.
本発明は、上記の向後者の側面消去磁気ヘッドに関する
ものである。まず、従来の側面消去型磁気ヘッドを、図
面に基づいて説明する。第３図は、従来の側面消去磁気
ヘツ゛ドを記録媒体より眺めた模式図である。The present invention relates to a side erase magnetic head of the latter type. First, a conventional side-erasing magnetic head will be explained based on the drawings. FIG. 3 is a schematic diagram of a conventional side erase magnetic head viewed from a recording medium.
同図で、１はリードライトコア、２はリードライトギャ
ップ、３．４は消去コアで、５はリードライトコア１お
よび消去コア３，４を埋設するスライダーである。消去
コア３，４は距形状であり、す」ドライト−ア１と扁゛
去コア３，４との間隔は、 ゛どの部分でも一定となる
ように形成されている。In the figure, 1 is a read/write core, 2 is a read/write gap, 3.4 is an erase core, and 5 is a slider in which the read/write core 1 and erase cores 3 and 4 are buried. The erasing cores 3 and 4 have a rectangular shape, and the distance between the eraser core 1 and the erasing cores 3 and 4 is constant in all parts.
発明が解決しようとする問題点
上記４、従来の側面消去磁気ヘッドでは、磁気ヘッドの
作成は、比較的に簡単であるものの、リードライトコア
１と消去コア３，４間に生じる漏洩磁束は、いずれの間
隔部分でも一定の強さである。Problems to be Solved by the Invention 4. In the conventional side erase magnetic head, although manufacturing the magnetic head is relatively simple, the leakage magnetic flux generated between the read/write core 1 and the erase cores 3 and 4 is The strength is constant at any interval.
このため、消去に必要な磁界を発生させるためには、消
去コア３．４に施した巻線に比較的大きな消去電流を流
さねばならず通常４０〜５０ＩＩＩＡを必要とする。１
また、消去電流を増ずことで消去轡界を必要なまでに強
くしようとすると、リードライトコア１と消去コア３．
４間に生じる漏洩磁束の均一性が悪くなり、効率良く消
去することが困難となる問題点がある。Therefore, in order to generate the magnetic field necessary for erasing, a relatively large erasing current must be passed through the windings applied to the erasing core 3.4, typically 40 to 50 IIIA. 1
Furthermore, if an attempt is made to make the erase field as strong as necessary by increasing the erase current, read/write core 1 and erase core 3.
There is a problem in that the uniformity of the leakage magnetic flux generated between the four regions deteriorates, making it difficult to erase it efficiently.
：； 問題点ヶ解決７．６□。手段本発明は、
上記の問題点を解決するために、リードライトギャップ
の側面にイレーズコアを配置し、リードライ１〜コアと
イレーズコア間に生ずる漏洩磁束により消去を行う側面
消去磁気ヘッドにお６ｓで、イレーズコアを部分的にリ
ードライ１〜方向に突出させた側面消去磁気ヘッドにあ
る。:; Problem solved 7.6□. Means The present invention includes
In order to solve the above problem, an erase core is placed on the side of the read/write gap, and the erase core is partially inserted into the side erase magnetic head that performs erasing by leakage magnetic flux generated between the read/write 1 core and the erase core in 6 seconds. This is located on a side erase magnetic head that protrudes in the read/write direction.
作 用
イレーズコアのリードライトコアに対向する面に突出部
を設けることにより、この部分において漏洩磁束が集中
する。このことにＪ：り小さな消去電流で十分消去でき
る磁束を発生させることが可能となり、効率よく消去が
できる。By providing a protruding portion on the surface of the erase core facing the read/write core, leakage magnetic flux is concentrated in this portion. This makes it possible to generate a magnetic flux sufficient for erasing with a small erasing current, allowing efficient erasing.
実施例 以下、本発明の実施例を、図面に基づいて説明する。Example Embodiments of the present invention will be described below based on the drawings.
ここで、第１図は、本発明の一実施例に係る側面消去磁
気ヘッドを記録媒体面から眺めた模式図である。同図で
第３図と同一符号は同等部分を示す。６．７は消去コア
、８．９は、それぞれ円弧状に形成された消去コア６．
７の突出部であ□る。Here, FIG. 1 is a schematic diagram of a side erase magnetic head according to an embodiment of the present invention viewed from the surface of a recording medium. In this figure, the same reference numerals as in FIG. 3 indicate equivalent parts. 6.7 is an eraser core, and 8.9 is an eraser core 6.9 each formed in an arc shape.
It is the protruding part of 7.
本実施例に係る側面消去磁気ヘッドは１．Ｆ記のごとく
消去コア６．７のリードライトコア１に対向する面に突
出部８．９を設けることによりこの部分で漏洩磁束が集
中する。このことによって小さな消去電流で充分消去で
きる磁束を発生させることが可能であり、効率良く消去
できる。この場合、消去・電流は、従来例に比較し１／
２〜２／３の電流で充分である。The side erase magnetic head according to this embodiment has 1. By providing a protrusion 8.9 on the surface of the erasing core 6.7 facing the read/write core 1 as shown in F, leakage magnetic flux is concentrated at this portion. This makes it possible to generate sufficient magnetic flux for erasing with a small erasing current, allowing efficient erasing. In this case, the erase current is 1/1 compared to the conventional example.
A current of 2 to 2/3 is sufficient.
第２図は、伯の実施例を示すもので、第１図および第３
図と同一符号は、同等部分を示す。１０゜１１・は消去
コア、１．２．１３は、そパれぞれ消去コア１０．１１
のリードライトコア１に対向する面に設けられた突出部
で台形状に形成される。消去コア１０．１１は、フェラ
イトが・用いられているが、フエライ１〜では磁束密度
Ｂｗ＋が高々５５００Ｇが限界である。このた□め消去
コア１０．１’１のリードライトコア１の対向面に、゛
斜線で示したような高磁束密度の金属磁性膜１４． ”
’１５をスパッタ、蒸着等の手段・で設けることにより
一層の低電流で効率よく消去することも可能であり、必
要な□消去電流は、従来例に比べ約１／２で充分である
。Figure 2 shows an example of Haku.
The same reference numerals as in the figures indicate equivalent parts. 10゜11・ are erase cores, 1.2.13 are erase cores 10.11, respectively.
The protrusion is provided on the surface facing the read/write core 1 and is formed into a trapezoidal shape. Ferrite is used for the erase cores 10 and 11, but the magnetic flux density Bw+ of the ferrites 1 to 1 is limited to 5500G at most. For this reason, on the surface of the erase core 10.1'1 opposite the read/write core 1, a metal magnetic film 14. ”
By providing '15 by means such as sputtering or vapor deposition, it is also possible to erase efficiently with a lower current, and the required erasing current is about 1/2 of that of the conventional example, which is sufficient.
発明の効果
以上に述べたように、本発明に係る側面消去磁気ヘッド
は、小さな消去電流で効率良く消去できる効果を有する
ものである。Effects of the Invention As described above, the side erase magnetic head according to the present invention has the effect of efficiently erasing with a small erasing current.
第１図、第２図は、本発明の一実施例ならびに他の実施
例に係る側面消去磁気ヘッドの記録媒体面から眺めた模
式図、第３図は、従来の側面消去磁気ヘッドの同様に眺
めた模式図である。
１・・・リードライトコア、２・・・リードライトギャ
ップ、６，７．１０．１１・・・消去コア、８，９゜１
２．１３・・・突出部。1 and 2 are schematic diagrams of side erase magnetic heads according to one embodiment of the present invention and other embodiments as viewed from the recording medium surface, and FIG. 3 is a schematic diagram of a conventional side erase magnetic head as seen from the recording medium surface. This is a schematic diagram. 1... Read/write core, 2... Read/write gap, 6,7.10.11... Erase core, 8,9゜1
2.13... Protrusion.
Claims (2)
置し、リードライトコアとイレーズコア間に生ずる漏洩
磁束により消去を行う側面消去磁気ヘッドにおいて、イ
レーズコアを部分的にリードライト方向に突出させたこ
とを特徴とする側面消去磁気ヘッド。(1) A side erase magnetic head in which an erase core is arranged on the side surface of the read/write gap and erase is performed by leakage magnetic flux generated between the read/write core and the erase core, in which the erase core is partially protruded in the read/write direction. side erase magnetic head.
磁束密度の金属磁性膜を設けた特許請求の範囲第１項記
載の側面消去磁気ヘッド。(2) The side erase magnetic head according to claim 1, wherein a metal magnetic film having a high magnetic flux density is provided on the surface of the erase core on the read/write core side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17753784A JPS6157019A (en) | 1984-08-28 | 1984-08-28 | Side erase magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17753784A JPS6157019A (en) | 1984-08-28 | 1984-08-28 | Side erase magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6157019A true JPS6157019A (en) | 1986-03-22 |
Family
ID=16032669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17753784A Pending JPS6157019A (en) | 1984-08-28 | 1984-08-28 | Side erase magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157019A (en) |
-
1984
- 1984-08-28 JP JP17753784A patent/JPS6157019A/en active Pending
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