JPS59223922A - Magnetic recording and reproducing head - Google Patents

Magnetic recording and reproducing head

Info

Publication number
JPS59223922A
JPS59223922A JP9833883A JP9833883A JPS59223922A JP S59223922 A JPS59223922 A JP S59223922A JP 9833883 A JP9833883 A JP 9833883A JP 9833883 A JP9833883 A JP 9833883A JP S59223922 A JPS59223922 A JP S59223922A
Authority
JP
Japan
Prior art keywords
magnetic pole
recording
magnetic
main
main 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
JP9833883A
Other languages
Japanese (ja)
Inventor
Nobuhide Matsuda
松田　信英
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 JP9833883A priority Critical patent/JPS59223922A/en
Publication of JPS59223922A publication Critical patent/JPS59223922A/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
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

Landscapes

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

Abstract

PURPOSE:To prevent the tip part of a main magnetic pole from wearing down to improve the recording and reproducing characteristics by making the sectional area of the face, which is brought into contact with a recording medium, of the main magnetic pole smaller than that of an auxiliary magnetic pole. CONSTITUTION:The sectional area of a tip part 8 of a main magnetic pole 2 is made smaller than that of a tip part 7 of an auxiliary magnetic pole 1. Therefore, though the tip part of the main magnetic pole 2 wears down when a medium 3 and the main magnetic pole 2 are moved while being brought into contact with each other, a recess is not generated because the tip part of the main magnetic pole 2 is pressed by the auxiliary magnetic pole 1 having a larger sectional area and wears always; and consequently, the recording and reproducing characteristics is not degraded even if the magnetic head is used for a long time.

Description

【発明の詳細な説明】 産業上の利用分野 本発明（弓：、垂直磁化方式を用いた、磁気記録再生ヘ
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 recording/reproducing head using a perpendicular magnetization method.

従来例の構成とその問題点 垂直磁化方式による記録再生は、第１図に示すように、
巻線４を有する補助磁極１が、磁性薄膜５を有する主磁
極２と、磁性層６を有する媒体３をはさんで対向して成
る。このとき巻線４に信号を通電することにより、磁性
薄膜６が励磁され、媒体３上の磁性層６が磁化され、記
録される。さらに再生はこの逆に磁化された磁性層６が
磁性薄膜６を励磁し、巻線４に信号電圧を発生する。こ
の場合、媒体３とヘッドとの相互電磁変換を安定に行う
ため、補助磁極１と主磁極２は一定の荷重で媒体３に圧
着され、媒体３が移動することにより、記録再生が行な
われるのである。この場合接触を安定に行なうため、通
常補助磁極１の媒体３に接触する部分の面積を主磁極２
側のそれより小さくして加圧していた。ここで、主磁極
２の先端部は媒体３の磁性層６に接触移動するため、表
面が摩耗する。通常、主磁極先端部には硬い材料を用い
ることにより摩耗しないようにするが、それれも長時間
使用することにより先端部が、第２図のように減り、媒
体との接触面に間隙が生じて記録再生特性が悪化する欠
点があった。Conventional configuration and its problems Recording and reproduction using the perpendicular magnetization method is as shown in Figure 1.
An auxiliary magnetic pole 1 having a winding 4 faces a main magnetic pole 2 having a magnetic thin film 5 and a medium 3 having a magnetic layer 6 therebetween. At this time, by applying a signal to the winding 4, the magnetic thin film 6 is excited, and the magnetic layer 6 on the medium 3 is magnetized and recorded. Furthermore, during reproduction, the magnetic layer 6 magnetized in the opposite direction excites the magnetic thin film 6 and generates a signal voltage in the winding 4. In this case, in order to stably perform mutual electromagnetic conversion between the medium 3 and the head, the auxiliary magnetic pole 1 and the main magnetic pole 2 are pressed against the medium 3 with a constant load, and recording and reproduction are performed by moving the medium 3. be. In this case, in order to ensure stable contact, the area of the part of the auxiliary magnetic pole 1 that contacts the medium 3 is usually reduced to the area of the main magnetic pole 2.
It was made smaller than the one on the side and pressurized. Here, since the tip of the main pole 2 moves in contact with the magnetic layer 6 of the medium 3, the surface thereof is abraded. Normally, a hard material is used for the tip of the main magnetic pole to prevent wear, but when used for a long time, the tip decreases as shown in Figure 2, creating a gap at the contact surface with the medium. This has the drawback of deteriorating recording and reproducing characteristics.

発明の目的 本発明は上記従来の欠点を解消するもので、主磁極の先
端部のすり減りを防止し記録再生特性の向上を図った磁
気記録再生ヘッドを提供することを目的とする。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and an object thereof is to provide a magnetic recording/reproducing head which prevents wear of the tip of the main pole and improves recording/reproducing characteristics.

発明の構成 本発明は上記目的を達成するもので、記録媒体を挾んで
対向して設けられた主磁極と補助磁極とを備え、前記主
磁極の記録媒体に接する面の断面積を、補助磁極の記録
媒体に接する面の断面積よりも小さくしたことを特徴と
する磁気記録再生ヘッドを提供するものである。Structure of the Invention The present invention achieves the above-mentioned object, and includes a main magnetic pole and an auxiliary magnetic pole that are provided facing each other with a recording medium in between. The present invention provides a magnetic recording/reproducing head characterized in that the cross-sectional area of the surface in contact with the recording medium is smaller than that of the magnetic recording head.

実施例の説明 次に本発明の実施例を図面を用いて説明する。Description of examples Next, embodiments of the present invention will be described using the drawings.

第３図に本発明の一実施例を示すが、この図において、
主磁極２の先端部８の断面積ば、補助磁極１の先端部７
の断面積より小さく構成されている。そのために媒体３
と主磁極２との接触移動により、主磁極２の先端部は摩
耗するが、断面積のより大きい補助磁極１により押され
て、主磁極２の先端部が常に摩耗するため第２図の」：
うなくぼみは生ぜず、従って、長時間の使用を経過して
も記録再生特性が悪化するようなことはない、。FIG. 3 shows an embodiment of the present invention, in which
If the cross-sectional area of the tip 8 of the main magnetic pole 2 is the tip 7 of the auxiliary magnetic pole 1,
The cross-sectional area of the Therefore, medium 3
The tip of the main magnetic pole 2 wears out due to the contact movement between the main magnetic pole 2 and the main magnetic pole 2, but the tip of the main magnetic pole 2 is constantly worn out because it is pushed by the auxiliary magnetic pole 1, which has a larger cross-sectional area. :
No dents occur, so the recording and playback characteristics will not deteriorate even after long-term use.

以上のように、本実施例の構成の記録再生ヘッドを用い
ることにより、精度の高い主磁極の接触特性が要求され
る高密度磁気記録において、長時間にわたる安定した記
録再生特性が得られるのであるが、本実施例は、上記の
ように特性が悪化しないばかりでなく、主磁極の先端が
初期の状態において、平滑でなくわずかの間隙を有し、
良好な記録再生特性が得られない場合にもある程度の使
用を経過することにより洗端部が摩耗し、間隙がなくな
り、記録再生特性が向」ニするという効果も有する。As described above, by using the recording/reproducing head with the configuration of this embodiment, stable recording/reproducing characteristics over a long period of time can be obtained in high-density magnetic recording, which requires highly accurate main pole contact characteristics. However, in this example, not only the characteristics do not deteriorate as described above, but also the tip of the main pole is not smooth in the initial state and has a slight gap.
Even if good recording and reproducing characteristics cannot be obtained, the cleaning end portion will wear out after a certain amount of use, eliminating gaps and improving the recording and reproducing characteristics.

本発明は、前記実施例に示すような巻線を有する補助磁
極と、磁性薄膜よシ成る主磁極で構成されるいわゆる補
助磁極励磁型磁気記録再生ヘッドのみならず、磁性材料
より成る補助磁極と、巻線と磁性薄膜を有する主磁極で
構成される、いわゆる主磁極励磁型磁気記録再生ヘッド
にも応用できることは明らかである。The present invention is applicable not only to a so-called auxiliary pole-excited magnetic recording/reproducing head consisting of an auxiliary pole having a winding as shown in the above embodiment and a main pole made of a magnetic thin film, but also to an auxiliary pole made of a magnetic material. It is clear that the present invention can also be applied to a so-called main pole excitation type magnetic recording/reproducing head, which is composed of a main pole having a winding and a magnetic thin film.

発明の効果 以上のように本発明は主磁極の先端部の媒体と接する面
の断面積を、補助磁極の先端部の媒体と接する面の断面
積よりも小さくしたもので、主磁極の先端部がすり減っ
ても、媒体との接触面に間隙が生ぜず、常に良好な記録
再生特性が得られる利点を有する。Effects of the Invention As described above, the present invention has a structure in which the cross-sectional area of the surface in contact with the medium at the tip of the main magnetic pole is made smaller than the cross-sectional area of the surface in contact with the medium at the tip of the auxiliary magnetic pole. Even if the material wears out, no gaps are formed on the contact surface with the medium, and this has the advantage that good recording and reproducing characteristics can always be obtained.

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

第１図は垂直磁気記録のための従来の磁気記録再生ヘッ
ドの側面図、第２図は主磁極先端部の摩耗の様子を示す
図、第３図は本発明の一実施例としての磁気記録再生ヘ
ッドの側面図である。 １・・・・・・補助磁極、２・・・・・・主磁極、３・
・・・・・媒体、４・・・・・・巻線、６・・・・・・
磁性薄膜、６・・・・・・磁性層、７・・・・・・補助
磁極先端部、８・・・・・・主磁極先端部。 代理人の氏名　弁理士　中　尾　敏　男　はが１名第１
図 第２図 第３図FIG. 1 is a side view of a conventional magnetic recording/reproducing head for perpendicular magnetic recording, FIG. 2 is a diagram showing how the tip of the main pole wears out, and FIG. 3 is a magnetic recording head as an embodiment of the present invention. FIG. 3 is a side view of the playback head. 1...Auxiliary magnetic pole, 2...Main magnetic pole, 3.
...Medium, 4...Winding, 6...
Magnetic thin film, 6...Magnetic layer, 7...Auxiliary magnetic pole tip, 8...Main magnetic pole tip. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure 3

Claims (3)

【特許請求の範囲】[Claims] （１）記録媒体を挾んで対向して設けられた主磁極と補
助磁極とを備え、前記主磁極の記録媒体に接する面の断
面積を、補助磁極の記録媒体に接する面の断面積よりも
小さくしたことを特徴とする磁気記録再生ヘッド。(1) A main magnetic pole and an auxiliary magnetic pole are provided facing each other with a recording medium in between, and the cross-sectional area of the surface of the main magnetic pole in contact with the recording medium is larger than the cross-sectional area of the surface of the auxiliary magnetic pole in contact with the recording medium. A magnetic recording/reproducing head characterized by its small size. （２）主磁極が磁性薄膜よりなり、補助磁極に巻線が設
けられていることを特徴とする特許請求の範囲第１項記
載の磁気記録再生ヘッド。(2) A magnetic recording/reproducing head according to claim 1, wherein the main magnetic pole is made of a magnetic thin film, and the auxiliary magnetic pole is provided with a winding. （３）　　主磁極が磁性薄膜よりなり、かつ巻線が設け
られており、補助磁極が磁性材料よりなることを特徴と
する特許請求の範囲第１項記載の磁気記録再生ヘッド。(3) A magnetic recording/reproducing head according to claim 1, wherein the main magnetic pole is made of a magnetic thin film and is provided with a winding, and the auxiliary magnetic pole is made of a magnetic material.
JP9833883A 1983-06-02 1983-06-02 Magnetic recording and reproducing head Pending JPS59223922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9833883A JPS59223922A (en) 1983-06-02 1983-06-02 Magnetic recording and reproducing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9833883A JPS59223922A (en) 1983-06-02 1983-06-02 Magnetic recording and reproducing head

Publications (1)

Publication Number Publication Date
JPS59223922A true JPS59223922A (en) 1984-12-15

Family

ID=14217113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9833883A Pending JPS59223922A (en) 1983-06-02 1983-06-02 Magnetic recording and reproducing head

Country Status (1)

Country Link
JP (1) JPS59223922A (en)

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