JPH0572007B2 - - Google Patents

Info

Publication number
JPH0572007B2
JPH0572007B2 JP57060879A JP6087982A JPH0572007B2 JP H0572007 B2 JPH0572007 B2 JP H0572007B2 JP 57060879 A JP57060879 A JP 57060879A JP 6087982 A JP6087982 A JP 6087982A JP H0572007 B2 JPH0572007 B2 JP H0572007B2
Authority
JP
Japan
Prior art keywords
head
magnetic
metal magnetic
head core
track width
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.)
Expired - Lifetime
Application number
JP57060879A
Other languages
Japanese (ja)
Other versions
JPS58179925A (en
Inventor
Shinji Yasuda
Kazuhiko Sato
Yukio Shirai
Satoshi Myaguchi
Hiroshi Yokoi
Shigeru Kono
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP57060879A priority Critical patent/JPS58179925A/en
Publication of JPS58179925A publication Critical patent/JPS58179925A/en
Publication of JPH0572007B2 publication Critical patent/JPH0572007B2/ja
Granted 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • G11B5/3106—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P30/00—Technologies relating to oil refining and petrochemical industry
    • Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock

Landscapes

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

Description

【発明の詳細な説明】 本発明は、高抗磁力記録媒体に対して充分な記
録能力を有する磁気ヘツドの製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a magnetic head having sufficient recording capability for high coercive force recording media.

従来より、VTRあるいは磁気デイスク用のヘ
ツドコアにはフエライト材料が多く用いられてき
た。これは数ＭHz以上の高い周波数領域における
透磁率の高さと耐摩耗性の良好なことによるもの
である。 Traditionally, ferrite materials have often been used for head cores for VTRs or magnetic disks. This is due to the high magnetic permeability and good wear resistance in the high frequency range of several MHz or more.

ところが、近年、記録密度の向上を図るために
合金粉末、メツキあるいは蒸着等による高抗磁力
記録媒体が使われる傾向にある。 However, in recent years, there has been a tendency to use high coercive force recording media made of alloy powder, plating, vapor deposition, etc. in order to improve recording density.

しかし、従来のフエライト材料によるヘツドコ
アでは飽和磁束密度が低いため、抗磁力が1000
（Oe）を超えるような記録媒体に対する記録能力
が不充分である。 However, because the saturation magnetic flux density of the head core made of conventional ferrite material is low, the coercive force is 1000
The recording capacity for recording media exceeding (Oe) is insufficient.

そこで、従来より特殊な用途として放送用
VTRのヘツドとして使われてきた飽和磁束密度
の高いセンダストヘツドが見直されている。 Therefore, it has been used for broadcasting as a special purpose than before.
Sendust heads, which have a high saturation magnetic flux density and have been used as heads for VTRs, are being reconsidered.

本発明は、上記事情に鑑みてなされたもので、
トラツク幅を精度よく出すことができ、かつ容易
に任意のトラツク幅とすることのできる磁気ヘツ
ドの製造方法を提供するものである。 The present invention was made in view of the above circumstances, and
The present invention provides a method for manufacturing a magnetic head that can accurately determine the track width and can easily provide any desired track width.

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図は本発明の一実施例で製造した磁気ヘツ
ドのヘツドコアを示している。 FIG. 1 shows a head core of a magnetic head manufactured in accordance with one embodiment of the present invention.

第１図において、１ａ，２ａはヘツドコア半体
で、共にガラス、セラミツクス等の非磁性材料で
形成されている。 In FIG. 1, 1a and 2a are head core halves, both of which are made of non-magnetic material such as glass or ceramics.

そして、ヘツドコア半体１ａ，２ａの突き合わ
せ面１a′，２a′には、それぞれセンダスト、パー
マロイ等からなる高飽和磁束密度の金属磁性層３
が形成されている。 Then, metal magnetic layers 3 with high saturation magnetic flux density made of sendust, permalloy, etc. are provided on the abutting surfaces 1a' and 2a' of the head core halves 1a and 2a, respectively.
is formed.

この金属磁性層３の厚さは、使用する周波数帯
域での表皮効果によるスキンデプスの２倍程度に
設定するのが好ましい。 The thickness of the metal magnetic layer 3 is preferably set to about twice the skin depth due to the skin effect in the frequency band used.

しかし、長波長側でのコンタクトエフエクトが
重要な場合には、より厚く設定してもよい。 However, if the contact effect on the long wavelength side is important, it may be set thicker.

そして、金属磁性層３，３の間には、SiO2，
Ａ2O3党からなる非磁性層４が介在されてい
る。 And between the metal magnetic layers 3, 3, SiO 2 ,
A nonmagnetic layer 4 made of A 2 O is interposed.

なお、非磁性層４は、ヘツドギヤツプを形成す
るもので、ヘツドギヤツプ長に相当する厚さを有
している。 The nonmagnetic layer 4 forms a head gap and has a thickness corresponding to the head gap length.

また、一方のヘツドコア半体１ａの突き合わせ
面１a′にはほぼ45度の傾斜面を有するＶ字状の巻
線溝５が形成され、この巻線溝５を介してヘツド
コア半体１ａ，２ａにそれぞれ巻線（図示せず）
が捲回される。 Further, a V-shaped winding groove 5 having an approximately 45-degree slope is formed on the abutting surface 1a' of one head core half 1a, and the head core halves 1a and 2a are connected to each other through this winding groove 5. windings (not shown)
is wound.

なお、図中、６はヘツドコア半体１ａ，２ａの
テープ当接面側に形成されたトラツク幅規制用溝
７はこのトラツク幅規制用溝６に埋込まれたガラ
ス、８，９はトラツク形成部である。 In the figure, 6 indicates a track width regulating groove 7 formed on the tape contacting surface side of the head core halves 1a, 2a, and 8 and 9 indicate track width regulating grooves 7 filled with glass embedded in this track width regulating groove 6. Department.

第２図ａ〜ｄは上記一実施例の磁気ヘツドのヘ
ツドコアの製造方法を示している。 FIGS. 2a to 2d show a method of manufacturing the head core of the magnetic head according to the above embodiment.

これによれば、まず第２図ａに示すように、ガ
ラス、セラミツクス等からなる一対の非磁性基板
１，２の表面をそれぞれ平滑な面に研磨し、一方
の非磁性基板１の表面に巻線溝５を加工する。 According to this method, first, as shown in FIG. 2a, the surfaces of a pair of nonmagnetic substrates 1 and 2 made of glass, ceramics, etc. are each polished to a smooth surface, and then the surface of one nonmagnetic substrate 1 is wrapped. Process the line groove 5.

次いで、第２図ｂに示すように、非磁性基板
１，２の表面に蒸着、スパツタリングあるいはメ
ツキ等の手段で金属磁性層３を形成する。この工
程において、巻線溝５で金属磁性層３が不連続に
ならないように配慮する必要がある。 Next, as shown in FIG. 2b, a metal magnetic layer 3 is formed on the surfaces of the nonmagnetic substrates 1 and 2 by means of vapor deposition, sputtering, plating, or the like. In this step, care must be taken to prevent the metal magnetic layer 3 from becoming discontinuous at the winding grooves 5.

この後、第２図ｃに示すように、非磁性基板
１，２とそれぞれの金属磁性層３，３にワイアー
ソー、ダイシングマシン、スライシングマシン等
によつてトラツク加工を施し、トラツク幅規制用
溝６を形成する。 Thereafter, as shown in FIG. 2c, track processing is performed on the nonmagnetic substrates 1 and 2 and the respective metal magnetic layers 3 and 3 using a wire saw, dicing machine, slicing machine, etc., and track width regulating grooves 6 are formed. form.

次いで、金属磁性層３の表面にそれぞれヘツド
ギヤツプ長の半分に相当する厚さの非磁性層４を
蒸着、スパツタリング等の手段で形成した後、第
２図ｄに示すように、非磁性基板１，２の金属磁
性層３同士を突き合わせ、トラツク形成部８，９
の突き合わせずれが少なくなるようにしてガラス
溶着によつて非磁性基板１，２を一体に接合す
る。 Next, a non-magnetic layer 4 having a thickness corresponding to half the head gap length is formed on the surface of the metal magnetic layer 3 by means such as vapor deposition or sputtering, and then the non-magnetic substrate 1, as shown in FIG. The two metal magnetic layers 3 are butted against each other to form track forming portions 8 and 9.
The non-magnetic substrates 1 and 2 are joined together by glass welding in such a way that the misalignment between the two is reduced.

この後、トラツク幅規制用溝６にガラス７を充
填する。 After this, the track width regulating groove 6 is filled with glass 7.

なお、非磁性基板１，２のテープ当接面（フロ
ント部）と反対側のバツク部に切り欠き１０を形
成しておき、ここにもガラス７を充填すると、非
磁性基板１，２をより強固に接合できる。 Note that if a notch 10 is formed in the back part of the non-magnetic substrates 1, 2 opposite to the tape contact surface (front part), and the glass 7 is also filled in this notch, the non-magnetic substrates 1, 2 will be more easily bonded. Can be firmly bonded.

これにより、第２図ｄに示すように、ヘツドコ
アブロツク１１が得られる。このヘツドコアブロ
ツク１１のテープ当接面を円研磨した後、第２図
ｄに示す一点鎖線に沿つてブレード、ワイアーソ
ーを使用して切断すると、第１図に示すヘツドコ
アが得られる。 As a result, a head core block 11 is obtained as shown in FIG. 2d. After circularly polishing the tape contacting surface of the head core block 11, the head core shown in FIG. 1 is obtained by cutting it using a blade and a wire saw along the dashed line shown in FIG. 2d.

次いで、巻線溝５を介してヘツドコア半体１
ａ，２ａに巻線を捲回する。 Next, the head core half 1 is inserted through the winding groove 5.
Wind the winding around a and 2a.

なお、第２図ｃに示す工程において、平坦な非
磁性基板２にトラツク加工する際、ワイアーソー
等を使う代わりに金属磁性層３のみを化学エツチ
ングやドライエツチングでトラツク加工してもよ
い。 In the step shown in FIG. 2c, when the flat nonmagnetic substrate 2 is track-processed, only the metal magnetic layer 3 may be track-processed by chemical etching or dry etching instead of using a wire saw or the like.

以上説明したように、本発明によれば、金属磁
性層を形成した後にトラツク加工を施しているの
で、トラツク幅を精度よく出すことができる。 As explained above, according to the present invention, since the track processing is performed after forming the metal magnetic layer, the track width can be determined with high accuracy.

また、トラツク加工を施すことにより、任意の
トラツク幅を有する磁気ヘツドを容易に製造する
ことができる。 Further, by performing track processing, a magnetic head having an arbitrary track width can be easily manufactured.

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

第１図は本発明の一実施例で製造したヘツドコ
アの斜視図、第２図ａ〜ｄはヘツドコアの製造方
法を説明する説明図である。 １，２……非磁性基板、１ａ，２ａ……ヘツド
コア半体、１a′，２a′……突き合わせ面、３……
金属磁性層、４……非磁性層、５……巻線溝、６
……トラツク幅規制用溝、７……ガラス、１１…
…ヘツドコアブロツク。 FIG. 1 is a perspective view of a head core manufactured according to an embodiment of the present invention, and FIGS. 2 a to 2 d are explanatory diagrams illustrating a method of manufacturing the head core. 1, 2...Nonmagnetic substrate, 1a, 2a...Head core half, 1a', 2a'...Abutment surface, 3...
Metal magnetic layer, 4... Nonmagnetic layer, 5... Winding groove, 6
...Track width regulating groove, 7...Glass, 11...
...head core block.

Claims (1)

【特許請求の範囲】 １ ガラス等からなる一対の非磁性基板に高飽和
磁束密度の金属磁性層を形成し、 この金属磁性層あるいは前記金属磁性層と前記
非磁性基板にトラツク加工を施すことにより所定
間隔で並んだ複数のトラツク幅規制用溝を形成
し、 次いで前記金属磁性層間にヘツドギヤツプを形
成する非磁性層を介在させて前記一対の非磁性基
板を一体に接合してヘツドコアブロツクを形成
し、 その後このヘツドコアブロツクを前記所定間隔
で並んだ各トラツク幅規制用溝の中央位置で切断
することによりヘツドコア単体に切り分けること を特徴とする磁気ヘツドの製造方法。[Scope of Claims] 1. By forming a metal magnetic layer with a high saturation magnetic flux density on a pair of non-magnetic substrates made of glass or the like, and performing track processing on the metal magnetic layer or the metal magnetic layer and the non-magnetic substrate. A head core block is formed by forming a plurality of track width regulating grooves lined up at predetermined intervals, and then bonding the pair of nonmagnetic substrates together with a nonmagnetic layer forming a head gap interposed between the metal magnetic layers. A method of manufacturing a magnetic head, comprising: then cutting the head core block at the center of each of the track width regulating grooves lined up at the predetermined intervals to separate the head cores into individual head cores.
JP57060879A 1982-04-14 1982-04-14 Magnetic head and its production Granted JPS58179925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57060879A JPS58179925A (en) 1982-04-14 1982-04-14 Magnetic head and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57060879A JPS58179925A (en) 1982-04-14 1982-04-14 Magnetic head and its production

Publications (2)

Publication Number Publication Date
JPS58179925A JPS58179925A (en) 1983-10-21
JPH0572007B2 true JPH0572007B2 (en) 1993-10-08

Family

ID=13155097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57060879A Granted JPS58179925A (en) 1982-04-14 1982-04-14 Magnetic head and its production

Country Status (1)

Country Link
JP (1) JPS58179925A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58182118A (en) * 1982-04-19 1983-10-25 Victor Co Of Japan Ltd Magnetic head and its manufacture
JPS6089807A (en) * 1983-10-21 1985-05-20 Sanyo Electric Co Ltd Magnetic head
JPH0766494B2 (en) * 1985-06-19 1995-07-19 株式会社日立製作所 Magnetic head
DE3630841A1 (en) * 1985-09-13 1987-03-26 Hitachi Metals Ltd FLYING MAGNETIC HEAD
JPS62146412A (en) * 1985-12-20 1987-06-30 Hitachi Ltd magnetic head
JPH0654528B2 (en) * 1986-04-23 1994-07-20 株式会社日立製作所 Magnetic head
JPH03141006A (en) * 1990-08-21 1991-06-17 Sanyo Electric Co Ltd Composite type magnetic head
JPH0515107U (en) * 1991-07-30 1993-02-26 ミツミ電機株式会社 Combined type magnetic head

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116810A (en) * 1977-03-22 1978-10-12 Hitachi Ltd Magnetic head core
JPS5514550A (en) * 1978-07-19 1980-02-01 Hitachi Ltd Manufacture for magnetic head
JPS55117723A (en) * 1979-02-28 1980-09-10 Sony Corp Magnetic head
JPS55157121A (en) * 1979-05-19 1980-12-06 Nippon Telegr & Teleph Corp <Ntt> Magnetic head core

Also Published As

Publication number Publication date
JPS58179925A (en) 1983-10-21

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