JPS62173668A - Magnetic head device - Google Patents
Magnetic head deviceInfo
- Publication number
- JPS62173668A JPS62173668A JP1382086A JP1382086A JPS62173668A JP S62173668 A JPS62173668 A JP S62173668A JP 1382086 A JP1382086 A JP 1382086A JP 1382086 A JP1382086 A JP 1382086A JP S62173668 A JPS62173668 A JP S62173668A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- head
- disk
- magnetic disk
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、可撓性嶽気ディスク記憶−ｇｃ直などに用い
て好適な磁気ヘッドに係り、特に、磁気ディスクの両面
に高密度記録を行うに好適な磁気ヘッド装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic head suitable for use in flexible mounting disk storage - GC direct, etc., and in particular, it relates to a magnetic head suitable for use in flexible storage disk storage - GC direct, etc., and in particular, for performing high-density recording on both sides of a magnetic disk. The present invention relates to a magnetic head device suitable for.
可撓性磁気ディスクを媒体とする記憶装置は、当初６気
ディスクの一面だけで記録再生が行われ、磁気ディスク
の磁気ヘッドが設けられる側とは反対側からこの磁気デ
ィスクを押し付けるバットが位置づけられていた。その
後、特開昭５４−３４２２１号公報や特公昭５５−２４
８０７号公報にみられるように、磁気ディスクの両側に
磁気ヘッドを配置し、磁気ディスクの両面で記録再生が
行われるようにした形式の記憶装置が出現した。さらに
、磁気ディスクの進歩、改良にともない、α鉄粉’ｋｌ
性媒体とするメタルティスフが出現し、例えば、従来の
酸化鉄を磁性媒体とする磁気ディスクに比べて４〜５倍
の線記録密度が可能となりだが、これとともに、磁気ヘ
ッドと６気デイスクとの当接状態に起因するスペーシン
グミスを従来以上に低減する必要がある。In storage devices using flexible magnetic disks, recording and playback were initially performed on only one side of the 6K disk, and a butt was positioned to press the magnetic disk from the side opposite to the side where the magnetic head was installed. was. After that, Japanese Patent Application Publication No. 54-34221 and Japanese Patent Publication No. 55-24
As seen in Japanese Patent No. 807, a type of storage device has appeared in which magnetic heads are arranged on both sides of a magnetic disk so that recording and reproduction can be performed on both sides of the magnetic disk. Furthermore, with the advancement and improvement of magnetic disks, alpha iron powder'kl
With the emergence of metal disks as magnetic media, for example, linear recording densities four to five times higher than conventional iron oxide magnetic disks became possible. It is necessary to reduce spacing errors caused by contact conditions more than ever before.
そこで、上記特開昭５４−４４２２１勺公報に開示され
るように、キャリッジ上に固定されたスライダヘッドと
ジンバル支持された可動スライダヘッドによって磁気デ
ィスクな挾持すると、メタル紛などの高保持力の記録媒
体や、垂直記録方式などの昼密度記録では、な２ａ気デ
イスクと磁気ヘッドとの接触は不元分である。これに対
し、先の特公昭５５−２４８０７号公報に開示される記
憶装置では、パッドで磁気ディスクをはさむようにし、
かつ山気ディスクの両側に配置される６Ｂ気ヘツドが揺
動可能な共通キャリッジによって担持され、これら磁気
ヘッドの１つが選択的に磁気ディスクと接触状態になる
ように構成されているが、サイド切換時・間が大きくて
揺動機構が設けられていることから、構造が複雑でキャ
リッジのＢＬｔも大きくなり、高速アクセス、扁成度な
位置付けが非常に難かしいという問題があった。Therefore, as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 54-44221, when a magnetic disk is held between a slider head fixed on a carriage and a movable slider head supported by a gimbal, it is possible to record high-retention force such as metal powder. In daytime density recording such as a medium or a perpendicular recording method, contact between a 2A disk and a magnetic head is an essential part. On the other hand, in the storage device disclosed in Japanese Patent Publication No. 55-24807, a magnetic disk is sandwiched between pads.
The 6B magnetic heads disposed on both sides of the magnetic disk are carried by a swingable common carriage, and one of these magnetic heads is configured to selectively come into contact with the magnetic disk. Since the time and space are large and a swinging mechanism is provided, the structure is complicated and the BLt of the carriage is also large, making high-speed access and precise positioning very difficult.
本発明の目的は、上記従来技術の問題点を解消し、磁気
ディスクと磁気ヘッドとを光分良好に接触させることが
でき、かつ山気ディスクの両面での高記録密度を可能と
した磁気ヘッド装置を提供することにある。It is an object of the present invention to solve the problems of the prior art described above, to provide a magnetic head that can bring a magnetic disk and a magnetic head into good optical contact, and that enables high recording density on both sides of a Yamaki disk. The goal is to provide equipment.
この目的を達成するために、本発明は、ヘッドコアとス
ライダとが一体となって該ヘッドコアは該スライダのデ
ィスク当接面から突出しているとともに、該ディスク当
接面にくぼみ部が設げられて磁気ヘッドが２個対をなし
、一方のＦＪｈｆｉ気ヘッドの山気コアが他方の該磁気
ヘッドの該ディスク当接面の（ぼみ部に対向するように
配置し、一方の該磁気ヘッドの磁気コアが他方の該磁気
ヘッドのディスク当接面のくぼみ部内に可撓性の磁気デ
ィスクを押し込むようにして該磁気ディスクに当接する
ようにした点に特徴がある。In order to achieve this object, the present invention includes a head core and a slider that are integrated, the head core protruding from a disk abutting surface of the slider, and a recessed portion provided in the disk abutting surface. Two magnetic heads form a pair, and the core of one FJhfi head is arranged to face the recess of the disk contacting surface of the other magnetic head, and the magnetic head of one of the magnetic heads The core is characterized in that the flexible magnetic disk is pushed into the recessed portion of the disk contacting surface of the other magnetic head so as to come into contact with the magnetic disk.
まず、本発明が適用可貫目な山気ディスク記憶装置の一
例を説明する。第３図はかかる磁気ディスク記憶装置の
概略構成図であって、１は可撓性の磁気ディスク、２は
モータ軸、３Ａ 、 ５Ｂは磁気ヘッド、４はキャリッ
ジ組立体、５はアクチェエータ、６はスプリング、７は
板バネ、８は上へラドアームである。First, an example of a mountain disk storage device to which the present invention is applicable will be described. FIG. 3 is a schematic configuration diagram of such a magnetic disk storage device, in which 1 is a flexible magnetic disk, 2 is a motor shaft, 3A and 5B are magnetic heads, 4 is a carriage assembly, 5 is an actuator, and 6 is a Spring, 7 is a leaf spring, 8 is an upward rad arm.
同図において、可撓性磁気ディスク１は、例えば、厚さ
０．０４及至０．０８７７１７７！のポリエチレンテレ
フタレートを基板として両面に磁性層を有してなり、そ
の中央部にて回転するモータ２に装着される。この磁気
ディスク１は、図示しないケースに収納され、容易に交
換可能であり、また、七〇犬ささば５インチ、６．５イ
ンチ、５！−インチ、８インチなど実用化されているが
、本発明では、ディスクサイズを限定するものではない
。一対ノ４１Ｂ気ヘッド３Ａ 、 ５Ｂが本発明を構成
するものであり、キャリッジ組立体４に搭載されている
このキャリツー）組立体４はアクチェエータ５によって
駆動され、これにより、磁気ヘッド５Ａ。In the figure, the flexible magnetic disk 1 has a thickness of, for example, 0.04 to 0.0877177! It has magnetic layers on both sides using polyethylene terephthalate as a substrate, and is attached to a rotating motor 2 at its center. The magnetic disk 1 is housed in a case (not shown) and can be easily replaced. - inch, 8 inch, etc. have been put into practical use, but the present invention does not limit the disk size. A pair of 41B magnetic heads 3A and 5B constitute the present invention, and this carriage assembly 4 mounted on a carriage assembly 4 is driven by an actuator 5, thereby causing the magnetic head 5A.
３Ｂは磁２ディスク１の半径方向に位置付けられる。3B is positioned in the radial direction of the magnetic disk 1.
また、磁気ヘッド３Ａはキャリッジ組立体４の本体上に
固着され、磁気ヘッド３Ｂはキャリッジ本体にスプリン
グ６により付勢されて仮バネ７によりキャリッジ本体に
回動自在にネジ止めされた上へラドアーム８に固着され
ている。キャリッジ組立体４は、アクチェエータ５によ
り、回転する磁気ディスク１の所定の半径位置に位置付
けされ、磁気ヘッドＳＡ 、 ＳＢは、磁気ディスク１
を挟持接触して情報の書込み、読取りがなされる。Further, the magnetic head 3A is fixed on the main body of the carriage assembly 4, and the magnetic head 3B is attached to the upper rad arm 8, which is biased against the carriage main body by a spring 6 and rotatably screwed to the carriage main body by a temporary spring 7. is fixed to. The carriage assembly 4 is positioned at a predetermined radial position of the rotating magnetic disk 1 by the actuator 5, and the magnetic heads SA and SB are positioned at a predetermined radial position of the rotating magnetic disk 1.
Information is written and read by sandwiching and contacting.
磁気ディスク１自体のカール、変形や、磁気ヘッドとの
摩擦に起因して生ずる振動などによって磁力ヘッドと磁
気ディスクとの接触状態が不安定になると、信号の書込
み、読取り時にスペーシング損失が変化し、再生信号の
振幅変動や周波数特性の劣化を生じ信頼性を低下させる
。If the contact between the magnetic head and the magnetic disk becomes unstable due to curling or deformation of the magnetic disk 1 itself or vibrations caused by friction with the magnetic head, the spacing loss will change when writing or reading signals. , causing amplitude fluctuations and deterioration of frequency characteristics of the reproduced signal, reducing reliability.
特に、メタル粉などの高保持力の磁性媒体を用いた高密
度記録システムでは、これが重要な課題となるが、本発
明によってかかる問題が解消するＯ
以下、本発明の実施例を図面によって説明する。In particular, this is an important issue in high-density recording systems that use magnetic media with high coercivity such as metal powder, but the present invention solves this problem.Examples of the present invention will be described below with reference to the drawings. .
第１図は本発明による感慨ヘッド装置の−実流側な示す
斜視図であって、１０はヘッドコア、１１ 、１２はス
ライダ、１３はディスク摺動面、１４はディスク当接面
、１５は（ぼみ部である。FIG. 1 is a perspective view showing the actual flow side of the head device according to the present invention, in which 10 is a head core, 11 and 12 are sliders, 13 is a disk sliding surface, 14 is a disk abutting surface, and 15 is ( This is the hollow part.
同図は磁気ヘッド装置をなす磁気ヘッドの一方を示して
おり、この磁気ヘッドはヘッドコア１０と２つのスライ
ダ１１ 、１２とからなっている。This figure shows one side of a magnetic head constituting a magnetic head device, and this magnetic head consists of a head core 10 and two sliders 11 and 12.
ヘッドコア１０は記録／読取ギャップと消去ギャップと
を存し、２つのスライダ１１ 、１２で挾持固層されて
いる。ヘッドコア１０のディスク摺動面１３は、走行方
向（矢印α）に円筒面をなすとともに、走行方向と直角
な方向にも所定曲率を有する面となっており、しかも、
スライダ１１゜１２の平面より突出している。その突出
量は、磁気ディスクの剛性、スライダ１１ 、１２の大
きさによって異るがおよそ０．０１及至０．０５ｒｎ７
７Ｌである。The head core 10 has a recording/reading gap and an erasing gap, and is sandwiched and fixed between two sliders 11 and 12. The disk sliding surface 13 of the head core 10 has a cylindrical surface in the running direction (arrow α), and also has a predetermined curvature in a direction perpendicular to the running direction.
It protrudes from the plane of the slider 11°12. The amount of protrusion varies depending on the rigidity of the magnetic disk and the size of the sliders 11 and 12, but is approximately 0.01 to 0.05rn7
It is 7L.
スライダ１１ 、１２の材料としては非磁性の材料、例
えばチタン酸カルシウム、チタン酸バリウムなどが使用
でき、ディスクとの当接面１４は平面研磨と面取加工さ
れ、かつ、一方のスライダ１２のディスク当接面１４は
、溝状のくぼみ部１５が設けられている。As the material of the sliders 11 and 12, non-magnetic materials such as calcium titanate and barium titanate can be used. The contact surface 14 is provided with a groove-shaped recess 15 .
かかる磁気ヘッドが２個対をなすこの実施例が磁気ディ
スク１を挾持したときの磁気ディスクとヘッドコア１３
との接触状態を第２図に示す。When this embodiment in which two such magnetic heads form a pair holds the magnetic disk 1, the magnetic disk and the head core 13
Figure 2 shows the state of contact with.
同図はディスク１０半径方向の断面を示している。同図
から明らかなように、一方の磁気ヘッドのヘッドコア１
０が他方の磁気ヘッドのくぼみ部１５と対向するように
して、それぞれの８気ヘツドが磁気ディスク１を挾持す
る。この場合、ヘッドコア１０の先ｙ１の一部は対向す
るくぼみ部１５に入り込んでいる。このために、磁気デ
ィスク１はスライダ１１ 、１２のディスク当接面１４
のくぼみ部１５以外の部分により、磁気ディスク１がそ
の半径方向で上下両側都合３涸所で規制され、また、磁
気ディスク１は２つのヘッドコア１０でそれぞれの対向
するくぼみ部１５に若干押し込まれる。This figure shows a cross section of the disk 10 in the radial direction. As is clear from the figure, head core 1 of one magnetic head
Each of the 8-magnetic heads holds the magnetic disk 1 in such a way that the 8-magnetic head faces the concave portion 15 of the other magnetic head. In this case, a portion of the tip y1 of the head core 10 has entered the opposing recess 15. For this purpose, the magnetic disk 1 is attached to the disk contact surfaces 14 of the sliders 11 and 12.
The magnetic disk 1 is restrained in the radial direction by the portions other than the recessed portions 15 at three locations on both the upper and lower sides, and the magnetic disk 1 is slightly pushed into the opposing recessed portions 15 by the two head cores 10.
第４図は本発明による磁気ヘッド装置の他の実施例を示
す斜視図であって、第１図に対応する部分には同一符号
をつけている。FIG. 4 is a perspective view showing another embodiment of the magnetic head device according to the present invention, and parts corresponding to those in FIG. 1 are given the same reference numerals.
第４図において、一方のスライダ１２のディスク当接面
１４に周囲が壁面を有するくぼみ部１５が設げられてい
る。これによりくぼみ部１５に対してスライダ１２０周
辺部全体も磁気ディスク１を規制し、特に、ヘッドコア
１００走行方向上流、下流１１１１１の８気デイスク１
のバタツキがなくなる。In FIG. 4, a recessed portion 15 having a wall surface around the disk abutting surface 14 of one slider 12 is provided. As a result, the entire periphery of the slider 120 also restricts the magnetic disk 1 with respect to the recessed portion 15, and in particular, the 8-air disk 1 at the upstream and downstream 11111 in the running direction of the head core 100.
The flapping will disappear.
第５図は本発明による磁気ヘッド装置のさらに他の実施
例を示す斜視図であり、第１図に対応する部分には同一
符号をつけている。FIG. 5 is a perspective view showing still another embodiment of the magnetic head device according to the present invention, and parts corresponding to those in FIG. 1 are given the same reference numerals.
この実施例は、Ｋ１図に示した実施例で、くぼみ部１５
をヘッドコア１００当接面まで拡張したものである。This embodiment is the embodiment shown in Fig. K1, and the recessed portion 15
is expanded to the contact surface of the head core 100.
第６図にかかる磁気ヘッドによりディスクを挾持したと
きの磁気ディスク１と磁気ヘッドとの接触状態を示す。FIG. 6 shows the state of contact between the magnetic disk 1 and the magnetic head when the disk is held between the magnetic heads according to FIG.
第７図は本発明による磁気ヘッド装置のさらに他の実施
例を示す斜視図であって、第１図に対応する部分には同
一符号をつけている。FIG. 7 is a perspective view showing still another embodiment of the magnetic head device according to the present invention, and parts corresponding to those in FIG. 1 are given the same reference numerals.
この実遁例は、第４図に示した実施例よりもくぼみ部１
５をヘッドコア１００当接面まで拡張したもので、第５
図の実施例に対してヘッドコア１０の上流端と下流端に
おいても、スライダ１２が磁気ディスク１を規制するよ
うになったものである。This practical example has a recessed part 1 more than the embodiment shown in FIG.
5 extended to the contact surface of the head core 100.
In contrast to the illustrated embodiment, sliders 12 also regulate the magnetic disk 1 at the upstream and downstream ends of the head core 10.
°また、図示し７よいが、ヘッドコア１０の上流端また
は下流端のいずれか一方でスライダ１２が磁気ディスク
１を規制するようにすることもできる。スプリング６（
第３図）によって加えられる磁気ヘッド５Ａ、 ５Ｂが
６気ディスク１を挾持する力は、−気ディスク１に弾性
変形な生ぜしめてヘッドコア１０と磁気ディスク１とが
安定に接触するように設定され、ヘッドコアのディスク
接触面がスライダのディスク当接面と同一平面にある従
来の磁気ヘッド装置と比較し、大きな接触応力が生じて
安定した接触が得られるものである。Further, as shown in the figure, the slider 12 may restrict the magnetic disk 1 at either the upstream end or the downstream end of the head core 10. Spring 6 (
The force applied by the magnetic heads 5A and 5B to clamp the disk 1 is set so as to cause the disk 1 to undergo elastic deformation so that the head core 10 and the magnetic disk 1 are in stable contact. Compared to conventional magnetic head devices in which the disk contacting surface of the head core is on the same plane as the disk contacting surface of the slider, a large contact stress is generated and stable contact is obtained.
以上説明したように、本発明によれば、磁気ディスクと
の充分な接触応力が得られ、像幅変動か−・ンヨク、媒
体本来の特性を充分に引出して信頼性の高〜・信号の１
き込み、読み取りができろようになり、装置の信頼性が
向上するばかりでなく、メタル粉などの高保持力媒体を
用いた尚密度記録が可能となる効果がある。As explained above, according to the present invention, sufficient contact stress with the magnetic disk can be obtained, and the original characteristics of the medium can be sufficiently brought out to prevent image width fluctuations, resulting in high reliability and high reliability of the signal.
This not only improves the reliability of the device, but also enables high-density recording using high coercivity media such as metal powder.
第１図は本発明による磁気ヘッド装置の一実施例を示す
斜視図、第２図はその実施例の磁気ディスク挟持状態を
示す断面図、第３図は本発明が適用可能な磁気ディスク
記憶装置の概略構成図、第４図および第５図はそれぞれ
本発明による・磁気ヘッド装置の他の実施例を示す斜視
図、第６１Ａは第５図に示した実施例の磁気ディスク挟
持状態を示す＋ｆｆｒ面図、第７図は本発明による磁気
ヘッド装置のさらに他の実施例を示す斜視図である。
１０・・・ヘッドコア １１．１２・・・スライダ
１３・・・ディスク省動面 １４・・・ディスク当接面
１５・・・くぼみ部
ゝ１１、。
代理人弁理士 小 川 肪 男ヵ
第２図FIG. 1 is a perspective view showing an embodiment of a magnetic head device according to the present invention, FIG. 2 is a sectional view showing a magnetic disk sandwiched state of the embodiment, and FIG. 3 is a magnetic disk storage device to which the present invention is applicable. FIGS. 4 and 5 are perspective views showing other embodiments of the magnetic head device according to the present invention, and FIG. 61A shows the magnetic disk sandwiched state of the embodiment shown in FIG. The top view and FIG. 7 are perspective views showing still another embodiment of the magnetic head device according to the present invention. 10...Head core 11.12...Slider 13...Disk movement saving surface 14...Disk contact surface 15...Recessed portion 11. Representative Patent Attorney Fat Ogawa Figure 2
Claims (1)
該スライダのディスク当接面から突出し、かつ該ディス
ク当接面にくぼみ部が形成された磁気ヘッドが２個対を
なし、該磁気ヘッドは可撓性磁気ディスクを挾持可能に
該ディスク当接面が向き合って配置され、かつ一方の該
磁気ヘッドのヘッドコアが他方の該磁気ヘッドにおける
該スライダの該くぼみ部に対向してなり、該磁気ヘッド
のそれぞれの該磁気コアが該可撓性磁気ディスクに当接
可能に構成したことを特徴とする磁気ヘッド装置。A magnetic core and a slider are integrated, the head core protrudes from the disk abutting surface of the slider, and two magnetic heads are formed in a pair with a recess formed in the disk abutting surface, and the magnetic heads are movable. The disk contact surfaces are arranged to face each other so as to be able to hold a flexible magnetic disk, and the head core of one of the magnetic heads faces the recessed portion of the slider of the other magnetic head, and A magnetic head device characterized in that each of the magnetic cores is configured to be able to come into contact with the flexible magnetic disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1382086A JPS62173668A (en) | 1986-01-27 | 1986-01-27 | Magnetic head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1382086A JPS62173668A (en) | 1986-01-27 | 1986-01-27 | Magnetic head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62173668A true JPS62173668A (en) | 1987-07-30 |
Family
ID=11843913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1382086A Pending JPS62173668A (en) | 1986-01-27 | 1986-01-27 | Magnetic head device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62173668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6332765A (en) * | 1986-07-26 | 1988-02-12 | Sony Corp | Magnetic head device |
| JPH01182917A (en) * | 1988-01-13 | 1989-07-20 | Teac Corp | Magnetic head |
-
1986
- 1986-01-27 JP JP1382086A patent/JPS62173668A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6332765A (en) * | 1986-07-26 | 1988-02-12 | Sony Corp | Magnetic head device |
| JPH01182917A (en) * | 1988-01-13 | 1989-07-20 | Teac Corp | Magnetic head |
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