JPS6143763B2 - - Google Patents
Info
- Publication number
- JPS6143763B2 JPS6143763B2 JP3842379A JP3842379A JPS6143763B2 JP S6143763 B2 JPS6143763 B2 JP S6143763B2 JP 3842379 A JP3842379 A JP 3842379A JP 3842379 A JP3842379 A JP 3842379A JP S6143763 B2 JPS6143763 B2 JP S6143763B2
- Authority
- JP
- Japan
- Prior art keywords
- ion etching
- track
- magnetic
- core
- magnetic head
- 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
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
- G11B5/1871—Shaping or contouring of the transducing or guiding surface
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
【発明の詳細な説明】
本発明は、磁気円板等の磁気記録媒体を用いて
記録および再成を行なうために必要とする磁気ヘ
ツドの構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a magnetic head necessary for recording and reproducing data using a magnetic recording medium such as a magnetic disk.
かゝる磁気ヘツドは、高速で移動する磁気記録
媒体の表面と対向して設けられるため、磁気記録
媒体面よりわずかに浮上していることを要すると
共に、磁気記録媒体の表面へ形成される極めて微
少な幅の記録トラツクに対する信号の記録また
は、この記録トラツクからの信号再生に用いられ
るため、記録または再生を行なう磁気ヘツドのト
ラツク部も極めて微少な幅となつており、一般に
第１図の斜視図に示す形状のものが使用されてい
る。 Since such a magnetic head is installed facing the surface of a magnetic recording medium that moves at high speed, it must be slightly floating above the surface of the magnetic recording medium, and it must be able to absorb the ultrasonic waves formed on the surface of the magnetic recording medium. Since it is used for recording signals on a recording track with a minute width or for reproducing signals from this recording track, the track portion of the magnetic head that performs recording or reproduction also has an extremely minute width. The shape shown in the figure is used.
すなわち、第１図はイオンエツチング加工法に
より製されたモノリシツク形の一例を示し、磁気
ヘツドコアの全体に磁性材が用いられたうえ、ト
ラツク部１が２条のスライダ面２Ａ，２Ｂの中間
に位置するものとなつており、トラツク部１の幅
W1がスライダ面２Ａ，２Ｂの幅W2よりも十分小
となつているため、磁気記録媒体面の高速移動に
伴なう空気層が主としてスライダ面２Ａ，２Ｂに
生じ、これによつて浮上力を発生している。 That is, FIG. 1 shows an example of a monolithic type manufactured by the ion etching process, in which a magnetic material is used for the entire magnetic head core, and the track portion 1 is located between the two slider surfaces 2A and 2B. The width of track portion 1
Since W 1 is sufficiently smaller than the width W 2 of the slider surfaces 2A and 2B, an air layer is generated mainly on the slider surfaces 2A and 2B due to the high-speed movement of the magnetic recording medium surface, and this causes the floating generating force.
また、トラツク部１の一端には、同様の磁性材
により製されたコア３が融着ガラス等により固着
されており、その巻線窓４にはコイルが巻回され
るものとなつている。 Further, a core 3 made of a similar magnetic material is fixed to one end of the track portion 1 with fused glass or the like, and a coil is wound around the winding window 4 of the core 3.
したがつて、トラツク部の一端とコア３との間
には間には間〓５が形成され、こゝに生ずる磁束
により磁気記録媒体に対する記録および磁気記録
媒体からの再生が行なわれる。 Therefore, a gap 5 is formed between one end of the track portion and the core 3, and the magnetic flux generated therein performs recording to and reproduction from the magnetic recording medium.
第２図は、第１図におけるコア３の固着部を示
す部分破断拡大図であり、トラツク部１およびコ
ア３の連続トラツク部１１は、イオンエツチング
加工によりその両側方が除去され、突出して形成
されているが、間〓５を形成するための突き合せ
部１２の突き合せ深さd1はイオンエツチング加工
によるエツチング量d2よりも大きくなつており、
エツチング後にも間〓５の両側方にサイドキヤツ
プ１３を生じ、これに基づく磁束の漏洩および磁
束の収集作用が、間〓５による磁束の発生および
収集作用へ悪影響を与える欠点があつた。 FIG. 2 is a partially broken enlarged view showing the fixed part of the core 3 in FIG. However, the abutting depth d1 of the abutting portion 12 for forming the gap 5 is larger than the etching amount d2 by the ion etching process,
Even after etching, side caps 13 are formed on both sides of the gap 5, and the leakage of magnetic flux and the magnetic flux collection effect caused by the side caps have a disadvantage in that the magnetic flux generation and collection effect by the gap 5 are adversely affected.
第３図は、かゝる欠点の除去を目的として提案
されたものであり（特願昭51−137079参照）、間
〓５の両側方をレーザ加工等により貫通して除去
し、開口部１４を形成しているが、加工数の増大
と共に加工精度上若干のサイドギヤツプ１３が残
存するものとなり、残存したサイドギヤツプ１３
により前述と同様の欠点を生じている。また、第
４図は、コア３を切断する以前に、突き合せ部１
２をイオンエツチング加工により突出成形してお
く場合の斜視図であり、不要部１５を事前に除去
することにより、トラツク部１の一端へ固着した
とき第３図と同様の開口部１４を形成するものと
なつているが、加工々数の増加する欠点を有して
いる。 Figure 3 shows a proposal for the purpose of eliminating such a defect (see Japanese Patent Application No. 51-137079), in which both sides of the gap 5 are penetrated and removed by laser machining or the like, and the opening 14 is removed. However, as the number of machining increases, some side gaps 13 remain due to machining accuracy, and the remaining side gaps 13
This causes the same drawbacks as mentioned above. In addition, FIG. 4 shows that before cutting the core 3, the butt portion 1
2 is a perspective view of the case where the track part 2 is formed into a protrusion by ion etching process, and by removing the unnecessary part 15 in advance, an opening part 14 similar to that in FIG. 3 is formed when the track part 1 is fixed to one end of the track part 1. Although it has become popular, it has the disadvantage of increasing the number of machining steps.
本発明は、従来のかゝる欠点を一挙に解決する
目的を有し、イオンエツチング加工によりトラツ
ク部両側方を除去し、トラツク部を突出して形成
する磁気ヘツドにおいて、トラツク部の一端に固
着するコアの突き合せ深さを所定のエツチング量
よりも小とした突き合せ部と、イオンエツチング
加工後に突き合せ部の両側方ヘ形成される開口部
とを備えたことを特徴とし、特に加工々数の増加
を招来することなく、完全に不要とするサイドギ
ヤツプを除去した極めて良効な記録、再成特性を
有する磁気ヘツドを提供するものである。 The present invention aims to solve all of the above drawbacks of the conventional magnetic head by removing both sides of the track part by ion etching and forming a protruding track part by forming a core fixed to one end of the track part. It is characterized by having an abutting part whose abutting depth is smaller than a predetermined etching amount, and openings formed on both sides of the abutting part after ion etching. The object of the present invention is to provide a magnetic head that has extremely effective recording and reproducing characteristics, completely eliminating unnecessary side gaps without causing any increase in magnetic field.
以下、実施例を示す第５図により本発明の詳細
を説明する。 The details of the present invention will be explained below with reference to FIG. 5 showing an embodiment.
第５図は第２図と同様の部分破断拡大図であ
り、あらかじめコア３の突き合せ部１２における
突き合せ深さd1がイオンエツチング量d2よりも小
となる様、コア３の内面における突き合せ角度α
を定めておき、トラツク部１の一端へ固着後のエ
ツチング加工により、自ずから間〓５両側方へ開
口部１６が形成されるものとしてある。 FIG . 5 is a partially cutaway enlarged view similar to FIG . Butt angle α
is determined, and by etching after fixing to one end of the track portion 1, openings 16 are naturally formed on both sides of the gap 5.
たゞし突き合せ角度αはコア３の成形または切
削加工時に定めればよいが、一例として突き合せ
角度αを60゜、突き合せ深さd1を５μｍ、イオン
エツチング量d2を13μｍとしたとき、開口部１６
の幅Ｌは、
（13−５）×tan60゜＝13.8μｍとなり、
開口部１５に生ずる磁束の発生および収集作用が
大幅に減少し、間〓５に対する影響はほゞ無視で
きる値となる。 However, the butt angle α may be determined during molding or cutting of the core 3, but as an example, the butt angle α is 60°, the butt depth d 1 is 5 μm, and the ion etching amount d 2 is 13 μm. When the opening 16
The width L is (13-5)×tan60°=13.8 μm, and the generation and collection of magnetic flux generated in the opening 15 is greatly reduced, and the influence on the gap 5 is almost negligible.
なお、前述の突き合せ角度α、突き合せ深さd1
およびイオンエツチング量d2は、材料としてNi−
Znフエライト等を用いた場合、現在の技術によ
り十分実現できる値となつている。 In addition, the above-mentioned butt angle α and butt depth d 1
and the ion etching amount d 2 is Ni-
When Zn ferrite or the like is used, this value is fully achievable with current technology.
以上の説明により明らかなとおり本発明によれ
ば、イオンエツチング加工により自ずから間〓の
両側方へ開口部が形成され、不要なサイドギヤツ
プが完全に排除されるため、トラツク部の間〓に
よつてのみ記録、再生作用が行なわれ、各種用途
の磁気ヘツドとして多大の効果を呈する。 As is clear from the above explanation, according to the present invention, openings are naturally formed on both sides of the gap by ion etching, and unnecessary side gaps are completely eliminated. It performs recording and reproducing functions, and exhibits great effects as a magnetic head for various purposes.
第１図はイオンエツチング加工法により製され
た磁気ヘツドの一例を示す斜視図、第２図、第３
図は第１図におけるコアの固着部を示す従来例の
部分破断拡大図、第４図はコアの加工状況を示す
従来列の斜視図、第５図は本発明の実施列を示す
第２図と同様の部分破断拡大図である。
１……トラツク部、３……コア、５……間〓、
１１……連続トラツク部、１２……突き合せ部、
１６……開口部、d1……突き合せ深さ、d2……イ
オンエツチング量。
Figure 1 is a perspective view showing an example of a magnetic head manufactured by the ion etching process, Figures 2 and 3.
The figure is a partially broken enlarged view of the conventional example showing the fixing part of the core in FIG. 1, FIG. 4 is a perspective view of the conventional example showing the processing status of the core, and FIG. 5 is a second view showing the implementation example of the present invention. It is a partially broken enlarged view similar to . 1...Track part, 3...Core, 5...Between,
11... Continuous track part, 12... Butt part,
16...opening, d1 ...butt depth, d2 ...amount of ion etching.
Claims (1)
を除去し、前記トラツク部を突出して形成した磁
気ヘツドにおいて、前記トラツク部の一端に固着
するコアの突き合せ深さを所定のイオンエツチン
グ量よりも小とした突き合せ部と、前記イオンエ
ツチング加工後に前記突き合せ部の両側方へ形成
される開口部とを備えたことを特徴とする磁気ヘ
ツド。 In a magnetic head formed by removing both sides of the track portion by ion etching process and protruding the track portion, the abutment depth of the core fixed to one end of the track portion is smaller than a predetermined ion etching amount. A magnetic head comprising: a mating portion; and openings formed on both sides of the mating portion after the ion etching process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3842379A JPS55132525A (en) | 1979-04-02 | 1979-04-02 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3842379A JPS55132525A (en) | 1979-04-02 | 1979-04-02 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55132525A JPS55132525A (en) | 1980-10-15 |
| JPS6143763B2 true JPS6143763B2 (en) | 1986-09-30 |
Family
ID=12524895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3842379A Granted JPS55132525A (en) | 1979-04-02 | 1979-04-02 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55132525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0425458U (en) * | 1990-05-10 | 1992-02-28 |
-
1979
- 1979-04-02 JP JP3842379A patent/JPS55132525A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0425458U (en) * | 1990-05-10 | 1992-02-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55132525A (en) | 1980-10-15 |
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