JPH01184610A - Production of magnetic head - Google Patents

Production of magnetic head

Info

Publication number
JPH01184610A
JPH01184610A JP347388A JP347388A JPH01184610A JP H01184610 A JPH01184610 A JP H01184610A JP 347388 A JP347388 A JP 347388A JP 347388 A JP347388 A JP 347388A JP H01184610 A JPH01184610 A JP H01184610A
Authority
JP
Japan
Prior art keywords
magnetic head
laser light
koh solution
gap depth
cracks
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
JP347388A
Other languages
Japanese (ja)
Inventor
Osamu Iwamoto
修 岩本
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP347388A priority Critical patent/JPH01184610A/en
Publication of JPH01184610A publication Critical patent/JPH01184610A/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23—Gap features
    • G11B5/232—Manufacture of gap
    • 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
    • G11B5/1272—Assembling or shaping of elements

Landscapes

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

Abstract

PURPOSE:To eliminate the generation of cracks or chips and to stably work with a good yield by working the specified groove of a gap depth by the use of a laser light. CONSTITUTION:A magnetic head block 1 is stored in a container in which the KOH solution of the concentration of 10-20% is contained, mounted on a precision stage 3, the laser light 4 to adiated to work the specified groove of the gap depth. As the laser light, Ar laser is used to make an output below 100mW. The KOH solution dissolves a magnetic member dissolved by the laser light. Consequently, an oscillation or an impact by a diamond wheel used conventionally is eliminated to prevent the generation of the cracks or the chips and stably process with the good yield.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁気記録再生装置に用いられる磁気ヘッドの製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a magnetic head used in a magnetic recording/reproducing device.

〔従来の技術〕[Conventional technology]

従来の規定清め加工方法は機械加工によるものであり、
たとえば精密切断装置により切断用の刃としては細かな
ダイヤモンド粒子を固めて作られたダイヤモンドホイー
ルを用いて加工されていた。The conventional method of purification is by machining.
For example, precision cutting equipment used diamond wheels made of compacted diamond particles as cutting blades.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら前述の従来技術による加工方法では第３図
に示すように機械加工の刃が回転するときの衝撃により
クラック６が発生しやすく特にギャップデプス８が５μ
ｍ以下という場合には’ａｓでなくなってしまうという
問題点を有していた。However, in the conventional machining method described above, as shown in FIG.
If it is less than m, there is a problem that it is no longer 'as'.

そこで本発明の目的とするところは規定溝を加工する際
に発生するクラック７やかけ６をなくしギャップデプス
の安定する磁気ヘッドの製造方法を提供するところにあ
る。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for manufacturing a magnetic head that eliminates the cracks 7 and chips 6 that occur when forming a defined groove and has a stable gap depth.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の磁気ヘッドの製造方法は、ギャップデプスを構
成するためにギャップ対向面に規定溝を構成する磁気ヘ
ッドの製造方法において前記規定溝をレーザー光を用い
て加工することを特徴とする。A method of manufacturing a magnetic head according to the present invention is characterized in that in a method of manufacturing a magnetic head in which a defined groove is formed on a surface facing the gap to define a gap depth, the defined groove is processed using a laser beam.

〔実　施　例〕〔Example〕

以下本発明の詳細を実施例により詳細に説明する。第１
図は本発明による実施例の製造方法の斜視図である。加
工される磁気ヘッドブロック１はＫＯＨ溶液２の中にお
かれさらにＫＯＨ溶液を入れた容器を精密ステージ３の
上に載せておく、加工はレーザー光４を照射することに
より行なうが精密ステージ３を移動することにより磁気
ヘッドブロック上の照射位置を変える。ＫＯＨ溶液はレ
ーザー光により溶けた磁性体を溶融するためのものであ
る。レーザー光としてはＡｒレーザーを用いている０本
実施例における出力は５０ｍＷ程度であるが出力が大き
い場合加工の端に加工変質層が生じなり、またクラック
が発生してしまうという現象が生じるので出力は１００
ｍＷ以下が望ましい。The details of the present invention will be explained below in detail with reference to Examples. 1st
The figure is a perspective view of a manufacturing method according to an embodiment of the present invention. The magnetic head block 1 to be processed is placed in a KOH solution 2, and a container containing the KOH solution is placed on a precision stage 3. Processing is performed by irradiating the precision stage 3 with a laser beam 4. By moving, the irradiation position on the magnetic head block is changed. The KOH solution is used to melt the magnetic material melted by laser light. The output in this example is about 50 mW, but if the output is large, a process-altered layer will be formed at the edge of the process, and cracks will occur, so the output is 100
Desirably less than mW.

またＫＯＨ溶液の濃度は本実施例において１５％の濃度
において行なっている。ＫＯＨ溶液の濃度は１０〜２０
％が適している０本実施例における磁性体コアは多結晶
のＭｎ−Ｚｎフェライトを用いているが単結晶フェライ
トの場合も同様である。In this example, the concentration of the KOH solution is 15%. The concentration of KOH solution is 10-20
% is suitable.Although polycrystalline Mn--Zn ferrite is used for the magnetic core in this embodiment, the same applies to single-crystal ferrite.

第２図は本実施例により加工された磁気ヘッドブロック
の斜視図である。規定溝５の端にはクラッチ等が発生せ
ず所望のギャップデプスが正確に加工されている。FIG. 2 is a perspective view of a magnetic head block processed according to this embodiment. No clutch or the like occurs at the end of the regulation groove 5, and the desired gap depth is accurately machined.

〔発明の効果〕〔Effect of the invention〕

以上に述べたように本発明によればギャップデプスの規
定溝をレーザー光を用いて加工することにより従来技術
の機械加工による場合に発生する振動や衝撃を減少する
ことができるためギャップデプス５μｍ以下というわず
かな残りしるの場合でもクラックやかけの発生をなくす
ことができ、安定に歩留りよく加工することができると
いう効果を有する。また同時に加工する際の位置合わせ
についてはレーザーを照射しレーザーによる加工痕を参
照して調整することができるなめ加工精度が非常に向上
するという効果も有する。As described above, according to the present invention, by processing the defined gap depth groove using laser light, it is possible to reduce the vibrations and shocks that occur when using conventional mechanical processing, so that the gap depth is 5 μm or less. Even in the case of a slight residual mark, it is possible to eliminate the occurrence of cracks and chips, and it has the effect that processing can be performed stably and with a high yield. Furthermore, positioning during simultaneous machining can be adjusted by irradiating a laser and referring to the machining marks caused by the laser, which has the effect of greatly improving the accuracy of the licking process.

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

第１図、本発明による実施例の斜視図。 第２図、本実施例により作製された磁気ヘッドブロック
の斜視図。 第３図、従来技術による磁気ヘッドブロックの斜視図。 １・・・磁気ヘッドブロック ２・・・ＫＯＨ溶液 ３・・・精密ステージ ４・・・レーザー光 ５・・・規定溝 ６・・・かけ ７・・・クラック ８・・・ギャップデプス 以上 出願人　セイコーエプソン株式会社 代理人　弁理士　最　上　　務（他１名）嘆１目FIG. 1 is a perspective view of an embodiment according to the invention. FIG. 2 is a perspective view of a magnetic head block manufactured according to this example. FIG. 3 is a perspective view of a magnetic head block according to the prior art. 1...Magnetic head block 2...KOH solution 3...Precision stage 4...Laser beam 5...Specified groove 6...Crack 7...Crack 8...Gap depth or more Applicant Seiko Epson Corporation Representative Patent Attorney Tsutomu Mogami (and 1 other person)

Claims (1)

【特許請求の範囲】[Claims] 記録再生をするギャップを具備する磁性体コアを非磁性
体からなるスライダーに固着することにより構成される
磁気ヘッドの前記ギャップのギャップデプスを構成する
ためにギャップ対向面に規定溝を形成する磁気ヘッドの
製造方法において、前記規定溝をレーザー光を用いて加
工することを特徴とする磁気ヘッドの製造方法。A magnetic head that is constructed by fixing a magnetic core provided with a gap for recording and reproducing to a slider made of a non-magnetic material, and in which a defined groove is formed on a surface facing the gap to define the gap depth of the gap. A method for manufacturing a magnetic head, characterized in that the defined groove is processed using a laser beam.
JP347388A 1988-01-11 1988-01-11 Production of magnetic head Pending JPH01184610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP347388A JPH01184610A (en) 1988-01-11 1988-01-11 Production of magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP347388A JPH01184610A (en) 1988-01-11 1988-01-11 Production of magnetic head

Publications (1)

Publication Number Publication Date
JPH01184610A true JPH01184610A (en) 1989-07-24

Family

ID=11558300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP347388A Pending JPH01184610A (en) 1988-01-11 1988-01-11 Production of magnetic head

Country Status (1)

Country Link
JP (1) JPH01184610A (en)

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