JPS6242331B2 - - Google Patents
Info
- Publication number
- JPS6242331B2 JPS6242331B2 JP54085704A JP8570479A JPS6242331B2 JP S6242331 B2 JPS6242331 B2 JP S6242331B2 JP 54085704 A JP54085704 A JP 54085704A JP 8570479 A JP8570479 A JP 8570479A JP S6242331 B2 JPS6242331 B2 JP S6242331B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- magnetic
- magnetic head
- holders
- static electricity
- 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
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 description 11
- 230000003068 static effect Effects 0.000 description 11
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 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
- 238000007796 conventional method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
【発明の詳細な説明】
この発明は、磁気デイスク装置など媒体と対向
して情報を記録・再生する磁気ヘツドに関し、特
に媒体と磁気ヘツドの摺動による静電気ノイズを
除去せしめることを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head such as a magnetic disk device that records and reproduces information while facing a medium, and particularly aims to eliminate static electricity noise caused by sliding between the medium and the magnetic head. It is.
第１図はフレキシブルデイスク装置用磁気ヘツ
ドのスライダ部分を磁気デイスク摺動部より見た
斜視図である。この図で、１はリードライトコ
ア、２はリードライトギヤツプで、リードライト
コア１にはリードライトコイル３が巻かれてお
り、クローズコア４が接着されている。５は磁気
デイスクのトラツクに対する磁気ヘツドの位置決
めエラーを減少せしめるためのイレーズコアで、
イレーズギヤツプ６を有し、リードライトコア１
の両サイドに配置されており、このイレーズコア
５にはイレーズコイル７が巻かれている。８およ
び９はホルダで、リードライトコア１およびイレ
ーズコア５を両側から保持し、磁気デイスクと摺
動する面を形成している。 FIG. 1 is a perspective view of the slider portion of the magnetic head for a flexible disk device, viewed from the magnetic disk sliding section. In this figure, 1 is a read/write core, 2 is a read/write gap, a read/write coil 3 is wound around the read/write core 1, and a closed core 4 is bonded. 5 is an erase core for reducing positioning errors of the magnetic head with respect to the track of the magnetic disk;
Has an erase gap 6 and a read/write core 1
The erase coil 7 is wound around the erase core 5. Holders 8 and 9 hold the read/write core 1 and erase core 5 from both sides and form surfaces that slide on the magnetic disk.
第２図は従来のフレキシブルデイスク装置用磁
気ヘツドの静電気ノイズ除去方法を説明するため
の図である。ホルダ８，９が保持ばね１０に接着
されており、加圧アーム１１の押圧で磁気デイス
ク板１４に磁気ヘツドのリードライトコア１、イ
レーズコア５およびホルダ８，９の摺動部分が接
触する。 FIG. 2 is a diagram for explaining a conventional method of removing static electricity noise from a magnetic head for a flexible disk device. Holders 8, 9 are bonded to a holding spring 10, and the read/write core 1, erase core 5, and sliding portions of the holders 8, 9 of the magnetic head come into contact with the magnetic disk plate 14 under pressure from a pressurizing arm 11.
現在、ホルダ８，９の材質はチタン酸バリウム
等の高抵抗、高誘電率のセラミツクスを使用して
いるのが一般的であり、このホルダ９にめつきま
たはスパツタリング等で導電性金属の導電層１２
を形成している。ここで、磁気デイスク板１４が
高速回転すると、磁気デイスク板１４とリードラ
イトコア１、イレーズコア５、ホルダ８，９との
間に静電気が発生する。この静電気は信号のノイ
ズ源となるので、導電層１２、導電接着剤１３を
経て保持ばね１０を介し外部にアースされる。 Currently, the holders 8 and 9 are generally made of ceramics with high resistance and high dielectric constant, such as barium titanate, and the holders 9 are coated with a conductive layer of conductive metal by plating or sputtering. 12
is formed. Here, when the magnetic disk plate 14 rotates at high speed, static electricity is generated between the magnetic disk plate 14, the read/write core 1, the erase core 5, and the holders 8 and 9. Since this static electricity becomes a signal noise source, it is grounded to the outside via the conductive layer 12, the conductive adhesive 13, and the holding spring 10.
このように、従来の静電気除去方法は、高抵
抗、高誘電率のセラミツクスを用いてホルダ８，
９を形成し、このホルダ８，９にめつきまたはス
パツタリング等で導電性金属の導電層１２を形成
しなければならず、高価となる欠点があつた。 In this way, the conventional static electricity removal method uses ceramics with high resistance and high dielectric constant to remove the holder 8,
9 and then a conductive layer 12 of conductive metal must be formed on the holders 8 and 9 by plating or sputtering, which has the disadvantage of being expensive.
この発明は上記の欠点を除去するためになされ
たもので、安価にかつ効率よく静電気ノイズを除
去するようにしたものである。以下この発明につ
いて説明する。 This invention was made to eliminate the above-mentioned drawbacks, and is intended to eliminate static electricity noise at low cost and efficiently. This invention will be explained below.
第３図はこの発明の一実施例を示す正面図で、
ホルダ１５，１６を従来のセラミツクス等の高抵
抗、高誘電率の材料に替えて固有抵抗15kΩ−cm
以下のZn−フエライト等の非磁性フエライトに
より形成し、磁気ヘツドを構成したものである。 FIG. 3 is a front view showing an embodiment of this invention.
By replacing the holders 15 and 16 with conventional high resistance and high dielectric constant materials such as ceramics, the specific resistance is 15kΩ-cm.
The magnetic head is made of a non-magnetic ferrite such as the following Zn-ferrite.
この構成によれば、ホルダ１５，１６と磁気デ
イスク板との間に生ずる静電気を低くおさえるこ
とができ、かつめつき等の高価な手段をとらなく
ても容易に電荷をアースすることが可能となる。
また、非磁性フエライトはリードライトコア１、
イレーズコア５と同種のフエライトで、デイスク
板との摺動摩耗においても均一な摩耗状態が得ら
れる。 According to this configuration, static electricity generated between the holders 15, 16 and the magnetic disk plate can be suppressed to a low level, and electric charges can be easily grounded without using expensive means such as clamping. Become.
In addition, non-magnetic ferrite is read/write core 1,
Since it is the same type of ferrite as the erase core 5, a uniform state of wear can be obtained even during sliding wear with the disk plate.
なお、上記実施例はホルダ１５，１６を非磁性
フエライトを用いたが、この発明はこれに限定さ
れず、磁気ヘツドの各コア１，５と同一摩耗速度
の非磁性材料であればよい。 In the above embodiment, the holders 15 and 16 are made of non-magnetic ferrite, but the present invention is not limited thereto, and any non-magnetic material that has the same wear rate as the cores 1 and 5 of the magnetic head may be used.
以上説明したようにこの発明は、ホルダを固有
抵抗15kΩ−cm以下のZn−フエライト等の非磁性
材料により形成し、磁気ヘツドを構成したので、
磁気デイスク板と摺動する面は上記非磁性材料と
により形成されるので、この面と磁気デイスク板
との間に生ずる静電気を低く抑えることができる
とともに、発生した静電気を容易に除去すること
ができる。また、ホルダと磁気ヘツドのコアの摩
耗が同じなので、コアが摩耗してもこれと同じだ
けホルダの表面が摩耗するため、動作に支障を来
さないばかりでなく、製造時に格別静電気を除去
するための加工は必要でなく、そのため製造が安
価で容易である等の利点がある。 As explained above, in this invention, the holder is made of a non-magnetic material such as Zn-ferrite with a resistivity of 15 kΩ-cm or less, and the magnetic head is constructed.
Since the surface that slides on the magnetic disk plate is formed of the above-mentioned non-magnetic material, the static electricity generated between this surface and the magnetic disk plate can be suppressed to a low level, and the generated static electricity can be easily removed. can. In addition, since the wear of the core of the holder and the magnetic head is the same, even if the core wears, the surface of the holder wears out by the same amount, so not only does it not affect operation, but it also eliminates static electricity during manufacturing. No additional processing is required, which has the advantage of being cheap and easy to manufacture.
第１図はフレキシブルデイスク装置用磁気ヘツ
ドのスライダ部分の斜視図、第２図は従来の磁気
ヘツドの静電気ノイズ除去を説明するための図、
第３図はこの発明の一実施例を示す正面図であ
る。
図中、１はリードライトコア、５はイレーズコ
ア、１０は保持ばね、１５，１６は非磁性フエラ
イトのホルダである。なお、図中の同一符号は同
一または相当部分を示す。
FIG. 1 is a perspective view of the slider portion of a magnetic head for a flexible disk device, and FIG. 2 is a diagram for explaining static electricity noise removal in a conventional magnetic head.
FIG. 3 is a front view showing an embodiment of the present invention. In the figure, 1 is a read/write core, 5 is an erase core, 10 is a holding spring, and 15 and 16 are nonmagnetic ferrite holders. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
たホルダを有するフレキシブルデイスク装置用磁
気ヘツドにおいて、前記ホルダを固有抵抗15KΩ
−cm以下で磁気ヘツドのコアと同一摩耗速度の非
磁性材料で構成したことを特徴とする磁気ヘツ
ド。1. In a magnetic head for a flexible disk device having a holder with a surface that contacts or faces a magnetic recording medium, the holder has a specific resistance of 15KΩ.
1. A magnetic head comprising a non-magnetic material having the same wear rate as the core of the magnetic head at -cm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8570479A JPS5611616A (en) | 1979-07-06 | 1979-07-06 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8570479A JPS5611616A (en) | 1979-07-06 | 1979-07-06 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5611616A JPS5611616A (en) | 1981-02-05 |
| JPS6242331B2 true JPS6242331B2 (en) | 1987-09-08 |
Family
ID=13866202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8570479A Granted JPS5611616A (en) | 1979-07-06 | 1979-07-06 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5611616A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58173023U (en) * | 1982-05-17 | 1983-11-18 | 富士電気化学株式会社 | Narrow track composite digital magnetic head |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS527311A (en) * | 1975-06-27 | 1977-01-20 | Special Metals Corp | Process for production of compound turbine wheel and like |
| JPS5269607A (en) * | 1975-12-08 | 1977-06-09 | Sanyo Electric Co Ltd | Conductive bonding agent and magnetic head using the same |
-
1979
- 1979-07-06 JP JP8570479A patent/JPS5611616A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS527311A (en) * | 1975-06-27 | 1977-01-20 | Special Metals Corp | Process for production of compound turbine wheel and like |
| JPS5269607A (en) * | 1975-12-08 | 1977-06-09 | Sanyo Electric Co Ltd | Conductive bonding agent and magnetic head using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5611616A (en) | 1981-02-05 |
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