JPS638526B2 - - Google Patents
Info
- Publication number
- JPS638526B2 JPS638526B2 JP57181479A JP18147982A JPS638526B2 JP S638526 B2 JPS638526 B2 JP S638526B2 JP 57181479 A JP57181479 A JP 57181479A JP 18147982 A JP18147982 A JP 18147982A JP S638526 B2 JPS638526 B2 JP S638526B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- recording
- erasing
- reproducing
- 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.)
- Expired
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000011162 core material Substances 0.000 description 62
- 239000011521 glass Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910000702 sendust Inorganic materials 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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
- G11B5/2651—Manufacture
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
【発明の詳細な説明】
本発明は磁気ヘツドに係り、特に磁気デイスク
などの磁性記録媒体を用いるデジタル記録再生装
置用の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 magnetic head, and more particularly to a method of manufacturing a magnetic head for a digital recording/reproducing device using a magnetic recording medium such as a magnetic disk.
第１図ないし第３図は、この種の従来の磁気ヘ
ツドを説明するための図である。 1 to 3 are diagrams for explaining this type of conventional magnetic head.
第１図に示すように、セラミツクスなどからな
るコア保持体１には、一方向に延びた第１の嵌合
溝２と、それと直交するように延びた第２の嵌合
溝３とが形成されている。前記第１の嵌合溝２に
は、フエライトやセンダストなどからなる記録再
生コア４が嵌め込まれ、この記録再生コア４のほ
ぼ中央部には記録再生ギヤツプを構成するための
ガラス層５が設けられている。前記第２の嵌合溝
３には、消去コア対チツプ６が嵌め込まれる。こ
の消去コア対チツプ６は、フエライトやセンダス
トなどからなる２つの消去コア７，７をガラスな
どからなる非磁性連結材８で一体に連結したもの
からなつている。消去コア対チツプ６の磁気記録
媒体と対向する側のほぼ中央には、コア保持体１
に嵌着された記録再生コア４の一部を跨ぐための
溝部９が形成され、この溝部９の外側にそれぞれ
の消去コア７の先端部１０が配置された形になつ
ている。 As shown in FIG. 1, a core holder 1 made of ceramics or the like has a first fitting groove 2 extending in one direction and a second fitting groove 3 extending perpendicularly thereto. has been done. A recording/reproducing core 4 made of ferrite, sendust, or the like is fitted into the first fitting groove 2, and a glass layer 5 for forming a recording/reproducing gap is provided approximately at the center of the recording/reproducing core 4. ing. The erase core pair chip 6 is fitted into the second fitting groove 3. This erasing core pair chip 6 is made up of two erasing cores 7, 7 made of ferrite, sendust, etc., connected together by a non-magnetic connecting material 8 made of glass or the like. A core holder 1 is located approximately in the center of the erase core pair chip 6 on the side facing the magnetic recording medium.
A groove 9 is formed to straddle a part of the recording/reproducing core 4 fitted into the groove 9, and the tip end 10 of each erasing core 7 is disposed outside the groove 9.
前述のように記録再生コア４ならびに消去コア
対チツプ６をコア保持体１の第１嵌合溝２および
第２の嵌合溝３に順次嵌め込んだのち、コア保持
体１と記録再生コア４ならびに消去コア対チツプ
６との隙間に、ガラスなどからなる結合材ブロツ
ク１１を挿入する。そして結合材ブロツク１１の
融点以上の温度に加熱することにより、コア保持
体１と記録再生コア４と消去コア対チツプ６とを
一体に結着せしめて、記録再生コア４ならびに消
去コア対チツプ６の位置決めを行なう。しかるの
ち磁気記録媒体と接する側の表面を精度よく研摩
することにより、磁気ヘツドの組立てを終了す
る。 After the recording/reproducing core 4 and the erasing core pair chip 6 are sequentially fitted into the first fitting groove 2 and second fitting groove 3 of the core holder 1 as described above, the core holder 1 and the recording/reproducing core 4 are fitted. Also, a bonding material block 11 made of glass or the like is inserted into the gap between the erasing core and the chip 6. Then, by heating to a temperature higher than the melting point of the binder block 11, the core holder 1, the recording/reproducing core 4, and the erasing core pair chip 6 are bonded together. Perform positioning. Thereafter, the surface in contact with the magnetic recording medium is precisely polished to complete the assembly of the magnetic head.
一方、磁気デイスクなどの磁気記録媒体におい
ては、磁気記録の高密度化、あるいは同じ記録容
量で磁気デイスクを小型化する場合、単位長さ当
りの記録再生トラツクの数が増すとともに、１つ
１つの記録再生トラツクの幅ならびに隣の記録再
生トラツクとの隙間がそれぞれ狭くなる。これに
対応して記録再生コア４の幅Ｗ（第２図参照）が
狭くなるのはもちろんのこと、消去コア７の先端
部１０における厚さｔも例えば第２図に示すよう
な肉厚のものから第３図に示すように肉薄にな
る。 On the other hand, in magnetic recording media such as magnetic disks, when increasing the density of magnetic recording or reducing the size of magnetic disks with the same recording capacity, the number of recording and reproducing tracks per unit length increases, and each The width of the recording/reproducing track and the gap between it and the adjacent recording/reproducing track become narrower. Correspondingly, not only the width W (see FIG. 2) of the recording/reproducing core 4 becomes narrower, but also the thickness t at the tip portion 10 of the erasing core 7 decreases, for example, as shown in FIG. As shown in Figure 3, it becomes thinner.
ところがこのように消去コア７の先端部１０が
徐々に薄くなると、切削加工によつて所定の深さ
の溝部９を形成するときに、それの両側にある先
端部１０が容易に折れ曲がつたり、欠損したりし
て製品不良を生じる。このようなことがあるた
め、歩留りを考慮すると消去コア７の先端部１０
の厚さは約110μmが限度であり、磁気記録の高密
度化に障害となる。 However, when the tip 10 of the erasing core 7 becomes gradually thinner, the tips 10 on both sides of the groove 9 are easily bent when the groove 9 of a predetermined depth is formed by cutting. The product may be damaged or missing, resulting in product defects. Because of this, when considering the yield, the tip part 10 of the erase core 7
Its thickness is limited to approximately 110 μm, which is an obstacle to increasing the density of magnetic recording.
本発明の目的は、このような従来技術の欠点を
解消し、高密度記録が可能な磁気ヘツドの製造方
法を提供するにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a magnetic head capable of high-density recording by eliminating the drawbacks of the prior art.
この目的を達成するため、本発明は、この種の
磁気ヘツドにおいて、消去コア対チツプの溝部加
工前に、消去コア先端部の外側にガラスなどの非
磁性材からなる補強部を消去コア先端部と一体に
形成したことを特徴とするものである。 In order to achieve this object, the present invention provides a magnetic head of this type, in which a reinforcing portion made of a non-magnetic material such as glass is added to the outside of the erase core tip before forming the groove between the erase core and the chip. It is characterized by being formed integrally with.
次に本発明の実施例を第４図ないし第１２図と
ともに説明する。従来と同様にコア保持体１に第
１の嵌合溝２と第２の嵌合溝３とが形成され、こ
れらの溝２，３に記録再生コア４ならびに消去コ
ア対チツプ６が順次嵌め込まれる。記録再生コア
４の構成などは従来のものと同様であるので、そ
れの説明は省略する。 Next, embodiments of the present invention will be described with reference to FIGS. 4 to 12. As in the prior art, a first fitting groove 2 and a second fitting groove 3 are formed in the core holder 1, and a recording/reproducing core 4 and an erasing core pair chip 6 are fitted into these grooves 2 and 3 in sequence. . Since the configuration of the recording/reproducing core 4 is the same as that of the conventional one, a description thereof will be omitted.
消去コア対チツプ６の製造工程について、第７
図ないし第１２図を用いて説明する。 Regarding the manufacturing process of the erase core vs. chip 6, the seventh
This will be explained using FIGS. 12 to 12.
最初、第７図に示すようにフエライトやセンダ
ストなどの磁性材料からなる長尺状のコア素材１
２を準備する。なお、図ではスペース上コア素材
１２の一部しか示していない。そしてこのコア素
材１２の下部中央に上部へ向けて尖つた屋根形の
第１の充填溝１３を設け（第８図参照）、第９図
に示すように、この第１の充填溝１３に比較的融
点の高い溶融状態のガラスを注入し冷却して連結
部８を形成する。次に第１０図に示す如くコア素
材１２の上部でかつ前記第１の充填溝１３の尖端
部両側に第２の充填溝１４，１４を設け、この溝
１４には前記連結材８よりも融点の低い溶融状態
のガラスをそれぞれ注入し冷却して補強部１５を
形成する。そして第１２図に示す如くコア素材１
２の前記補強部１５の外側にあたる両肩部１６，
１６を研摩によつて除去して、両側が補強部１
５，１５で補強された中央突出部１７が形成され
る。ついで第１３図に示すように中央突出部１７
の中心から前記連結部材８に向けて切削加工によ
り溝部９を形成し、溝部９の底部は連結材８の上
部に達している。この溝部９を形成する際、前述
のように中央突出部１７の両側が補強部１５，１
５で補強されているため、中央突出部１７の残部
の厚さが薄くなつても欠損するようなことはな
い。しかるのち第１４図に示すようにコア素材１
２をそれぞれの長手方向に沿つて所定の厚さにス
ライスすることにより、肉薄の先端部１０を有す
る２個の消去コア７，７が連結材８で一体に連結
された消去コア対チツプ６が順次得られる。 First, as shown in Fig. 7, a long core material 1 made of a magnetic material such as ferrite or sendust is made.
Prepare 2. In addition, in the figure, only a part of the core material 12 is shown due to space. Then, a roof-shaped first filling groove 13 is provided at the center of the lower part of this core material 12 (see FIG. 8), and as shown in FIG. The connecting portion 8 is formed by injecting molten glass with a high target melting point and cooling it. Next, as shown in FIG. 10, second filling grooves 14, 14 are provided in the upper part of the core material 12 and on both sides of the pointed end of the first filling groove 13. The reinforcing portion 15 is formed by injecting glass in a low molten state and cooling it. Then, as shown in Fig. 12, the core material 1
Both shoulder portions 16 on the outside of the reinforcing portion 15 of No. 2,
16 is removed by polishing, and both sides have reinforced parts 1.
A central protrusion 17 reinforced with 5 and 15 is formed. Then, as shown in FIG.
A groove 9 is formed by cutting from the center toward the connecting member 8, and the bottom of the groove 9 reaches the top of the connecting member 8. When forming this groove 9, as described above, both sides of the central protrusion 17 are
5, so even if the thickness of the remaining part of the central protrusion 17 becomes thinner, it will not be damaged. Afterwards, as shown in FIG. 14, the core material 1
By slicing the chip 2 to a predetermined thickness along the longitudinal direction of each chip, an eraser core pair chip 6 in which two eraser cores 7, 7 having thin tip portions 10 are integrally connected by a connecting member 8 is obtained. Obtained sequentially.
この消去コア対チツプ６は、前述のようにコア
保持体１の第２の嵌合溝３に嵌入され、その後に
補強部１５と同じ程度の融点を有するガラス製の
結合材ブロツク１１（第４図参照）を、コア保持
体１と記録再生コア４ならびに消去コア対チツプ
６との隙間に挿入する。そして結合材ブロツク１
１ならびに補強部１５の融点以上の温度に加熱す
ることにより、コア保持体１と記録再生コア４と
消去コア対チツプ６とを一体に結着する。しかる
のち磁気記録媒体と接する側のコア保持体１、記
録再生コア４ならびに消去コア対チツプ６の表面
を精度よく研摩することにより、磁気ヘツドの組
立てを終了する。 This erased core pair chip 6 is fitted into the second fitting groove 3 of the core holder 1 as described above, and then a bonding material block 11 (fourth (see figure) is inserted into the gap between the core holder 1 and the recording/reproducing core 4 and the erasing core pair chip 6. And binding material block 1
By heating the core holder 1 to a temperature higher than the melting point of the reinforcing portion 1 and the reinforcing portion 15, the core holder 1, the recording/reproducing core 4, and the erasing core pair chip 6 are bonded together. Thereafter, the surfaces of the core holder 1, the recording/reproducing core 4, and the erasing core pair chip 6 that are in contact with the magnetic recording medium are polished with precision, thereby completing the assembly of the magnetic head.
本発明は前述のように消去コア対チツプの溝部
加工前に、消去コア先端部の外側に補強部を一体
に形成したため、溝部を形成する際に消去コア先
端部が欠損したりすることがなく、溝加工が容易
である。しかも消去コア先端部の厚さを可及的に
薄くすることができ、そのために高密度記録があ
るいは（ならびに）磁気デイスクの小型化可能な
磁気ヘツドを提供することができる。 In the present invention, as mentioned above, the reinforcing part is integrally formed on the outside of the eraser core tip before forming the groove between the eraser core and the chip, so the eraser core tip will not be damaged when forming the groove. , groove machining is easy. Moreover, the thickness of the tip of the erase core can be made as thin as possible, which makes it possible to provide a magnetic head that allows high-density recording and/or miniaturization of magnetic disks.
第１図は従来の磁気ヘツドの分解斜視図、第２
図は従来の磁気ヘツドで消去コア先端部が肉薄の
場合の磁気ヘツドの要部正面図、第３図は従来の
磁気ヘツドで消去コア先端部が肉薄の場合の消去
コア対チツプの側面図、第４図は本発明の実施例
に係る磁気ヘツドの分解斜視図、第５図はその磁
気ヘツドの要部正面図、第６図はその磁気ヘツド
に用いる消去コア対チツプの側面図、第７図、第
８図、第９図、第１０図、第１１図、第１２図、
第１３図ならびに第１４図はその消去コア対チツ
プの製造工程を説明するための斜視図である。
４……記録再生コア、６……消去コア対チツ
プ、７……消去コア、８……連結材、９……溝
部、１０……先端部、１５……補強部。
Figure 1 is an exploded perspective view of a conventional magnetic head, Figure 2 is an exploded perspective view of a conventional magnetic head.
The figure is a front view of the main parts of a conventional magnetic head in which the erase core tip is thin, and FIG. 3 is a side view of the erase core versus chip in a conventional magnetic head in which the erase core tip is thin. FIG. 4 is an exploded perspective view of a magnetic head according to an embodiment of the present invention, FIG. 5 is a front view of essential parts of the magnetic head, FIG. 6 is a side view of an erasing core pair used in the magnetic head, and FIG. Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12,
FIGS. 13 and 14 are perspective views for explaining the manufacturing process of the erase core pair chip. 4... Recording/reproducing core, 6... Erasing core pair chip, 7... Erasing core, 8... Connecting material, 9... Groove portion, 10... Tip portion, 15... Reinforcement portion.
Claims (1)
磁性連結材で連結して消去コア対チツプを構成
し、その消去コア対チツプの磁気記録媒体と対向
する側の中央部に設けられた溝部に記録再生コア
の一部を挿入することにより、その記録再生コア
の両側にそれぞれ前記消去コアが配置された形態
になる磁気ヘツドにおいて、前記消去コア対チツ
プの溝部加工前に、消去コア先端部の外側に非磁
性材からなる補強部を消去コア先端部と一体に形
成したことを特徴とする磁気ヘツドの製造方法。1 Two erasing cores having thin tip portions are connected with a non-magnetic connecting material to form an erasing core pair chip, and an erasing core pair chip is provided at the center of the side facing the magnetic recording medium of the erasing core pair chip. In a magnetic head in which the erasing cores are arranged on both sides of the recording/reproducing core by inserting a part of the recording/reproducing core into the groove, the tip of the erasing core is A method of manufacturing a magnetic head, characterized in that a reinforcing part made of a non-magnetic material is formed integrally with the tip of the eraser core on the outside of the eraser core.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57181479A JPS5971125A (en) | 1982-10-18 | 1982-10-18 | Manufacture of magnetic head |
| KR1019830004255A KR840006864A (en) | 1982-10-18 | 1983-09-09 | Manufacturing method of the magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57181479A JPS5971125A (en) | 1982-10-18 | 1982-10-18 | Manufacture of magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5971125A JPS5971125A (en) | 1984-04-21 |
| JPS638526B2 true JPS638526B2 (en) | 1988-02-23 |
Family
ID=16101471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57181479A Granted JPS5971125A (en) | 1982-10-18 | 1982-10-18 | Manufacture of magnetic head |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5971125A (en) |
| KR (1) | KR840006864A (en) |
-
1982
- 1982-10-18 JP JP57181479A patent/JPS5971125A/en active Granted
-
1983
- 1983-09-09 KR KR1019830004255A patent/KR840006864A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5971125A (en) | 1984-04-21 |
| KR840006864A (en) | 1984-12-03 |
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