JPS6093607A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS6093607A JPS6093607A JP20057983A JP20057983A JPS6093607A JP S6093607 A JPS6093607 A JP S6093607A JP 20057983 A JP20057983 A JP 20057983A JP 20057983 A JP20057983 A JP 20057983A JP S6093607 A JPS6093607 A JP S6093607A
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- holders
- medium
- head
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 42
- 239000000314 lubricant Substances 0.000 claims abstract description 27
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 15
- 239000010409 thin film Substances 0.000 abstract description 10
- 239000011148 porous material Substances 0.000 abstract description 6
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000010408 film Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003302 ferromagnetic material Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910018104 Ni-P Inorganic materials 0.000 description 2
- 229910018536 Ni—P Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- IGOJDKCIHXGPTI-UHFFFAOYSA-N [P].[Co].[Ni] Chemical compound [P].[Co].[Ni] IGOJDKCIHXGPTI-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 γ-Fe Chemical compound 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
-
- 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
- G11B5/10—Structure or manufacture of housings or shields for heads
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は磁気記録媒体に接触して記録再生を行う磁気
ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a magnetic head that performs recording and reproduction by contacting a magnetic recording medium.
従来のオーディオテープレコーダ、ビデオテープレコー
ダ、フロッピー磁気ディスク装置等の接触型磁気記録装
置は磁気記録媒体として有機系ノイインダの中に強磁性
体の粉末（例えばγ−Ｆｅ、０．など強磁性酸化鉄）を
分散させ、これをプラスチックフィルムの上に塗布した
塗布型磁気記録媒体を使用している。Conventional contact-type magnetic recording devices such as audio tape recorders, video tape recorders, and floppy magnetic disk devices use ferromagnetic powder (e.g., ferromagnetic iron oxide such as γ-Fe, 0.2 ) is dispersed and coated on a plastic film to form a coated magnetic recording medium.
この磁気記録媒体に摺接して信号を記録再生する磁気ヘ
ッドは、記録媒体の磁性層に比べて高硬度であるため、
磁気記録媒体との摺接による摩耗については余り問題に
する必要がない。The magnetic head that records and reproduces signals by slidingly contacting the magnetic recording medium has a higher hardness than the magnetic layer of the recording medium.
There is no need to worry too much about wear due to sliding contact with the magnetic recording medium.
しかしながら、上述したように磁性層にバインダのよう
な非磁性物質が混入されることは、その発磁性層の最大
残留磁束密度が低下する欠点をまぬがれなかった。この
ため、強磁性体の粉末の配合比を高めて録音感度を高く
することが行なわれている。However, as mentioned above, mixing a non-magnetic substance such as a binder into the magnetic layer has the disadvantage that the maximum residual magnetic flux density of the magnetic layer is reduced. For this reason, recording sensitivity has been increased by increasing the blending ratio of ferromagnetic powder.
近年、記録情報の高密度化が要求され、これに対応して
磁性体密度を高めたものが保持力、飽和磁化の大きいコ
バルト・ニッケル・リン（Ｇｏ−Ｎｉ −Ｐ）、コバル
ト・クローム（Ｃｏ−Ｃｒ）などの金属薄膜を用いた金
属薄膜連続媒体である。この金属薄膜連続媒体は磁性層
にバインダ等を混入していないため、磁性体密度を高め
ることができる。In recent years, there has been a demand for higher density recording information, and in response to this demand, cobalt-nickel-phosphorus (Go-Ni-P) and cobalt-chromium (Co) with higher magnetic density have been developed. It is a continuous metal thin film medium using a metal thin film such as -Cr). Since this metal thin film continuous medium does not contain a binder or the like mixed into the magnetic layer, the magnetic density can be increased.
しかし、金属薄膜連続媒体の磁性層が高硬度となるため
、従来の磁気ヘッドでは、金属薄膜連続体との当接摺動
により磁気ヘッド面が著しく摩耗するという問題点が生
じた。However, since the magnetic layer of the metal thin film continuous medium has a high hardness, the conventional magnetic head has a problem in that the magnetic head surface is significantly worn due to sliding contact with the metal thin film continuous medium.
この問題点を解決するために、媒体上に潤滑剤を塗布し
て媒体と磁気ヘッド面との摩擦を小さくすることが行な
われている。しかしながら、媒体上に潤滑剤を塗布した
場合、磁気ヘッドの接触点において大きな面圧を受ける
と潤滑剤が除去されてしまうことがあった。また、潤滑
層を厚く形成すると、媒体と磁気ヘッド面との間隙が大
きくなり、スペーシングロスが増大し記録再生特性Ｉこ
悪い影響をおよぼす。しかも、媒体上に潤滑剤を塗布す
ることは、製造工程が煩雑になるとともに潤滑剤の分だ
け生産原価が高くなる欠点があった。In order to solve this problem, a lubricant is applied onto the medium to reduce the friction between the medium and the magnetic head surface. However, when a lubricant is applied to the medium, the lubricant may be removed if a large surface pressure is applied at the contact point of the magnetic head. Furthermore, if the lubricant layer is formed thickly, the gap between the medium and the magnetic head surface becomes large, increasing the spacing loss and adversely affecting the recording and reproducing characteristics. Moreover, applying a lubricant on the medium has the disadvantage that the manufacturing process becomes complicated and the production cost increases by the amount of the lubricant.
この発明は上記の問題点を解決するためｌこなされたも
ので、摺接面の耐摩耗性をヘッドの側から改善してその
寿命を著しく向上させることができる磁気ヘッドを提供
することを目的とする。This invention has been made to solve the above problems, and an object of the present invention is to provide a magnetic head that can improve the wear resistance of the sliding contact surface from the head side and significantly extend the life of the head. shall be.
この発明は磁気記録媒体に接触して記録再生を行なう磁
気ヘッドにおいて、記録再生用の強磁性体層を保持する
ホルダーを多孔質の材料で形成し、このホルダーに潤滑
剤を含浸させたことを特徴とするものである。これによ
り、常にホルダー内から媒体と磁気ヘッドとの間に潤滑
剤を適量供給することができる。This invention relates to a magnetic head that performs recording and reproduction by contacting a magnetic recording medium, in which a holder that holds a ferromagnetic layer for recording and reproduction is formed of a porous material, and this holder is impregnated with a lubricant. This is a characteristic feature. This makes it possible to always supply an appropriate amount of lubricant between the medium and the magnetic head from within the holder.
この発明によればホルダー内に潤滑剤を含浸させること
により、常に接触面に適量の潤滑剤を供給することがで
きるため、媒体と磁気ヘッド面の摩擦抵抗を低くおさえ
て磁気ヘッド面の耐摩耗性を改善してその寿命を著しく
向上させることができるとともに、磁気ヘッドの接触点
において大きな面圧力を受けても潤滑剤が除去されるこ
とがなくなり、磁気ヘッドの信頼性を向上させることが
できる。According to this invention, by impregnating the holder with lubricant, the appropriate amount of lubricant can always be supplied to the contact surface, so the frictional resistance between the medium and the magnetic head surface can be kept low, and the wear of the magnetic head surface can be improved. In addition, the lubricant is not removed even when the contact point of the magnetic head is subjected to large surface pressure, which improves the reliability of the magnetic head. .
しかも、磁気ヘッド自体が潤滑効果を有するため、媒体
上に潤滑剤を塗布する必要がなくその分テープの製造工
程を簡略化することができる。Moreover, since the magnetic head itself has a lubricating effect, there is no need to apply lubricant on the medium, and the tape manufacturing process can be simplified accordingly.
以下図面を参照してこの発明の一実施例を説明する。 An embodiment of the present invention will be described below with reference to the drawings.
図において工は板状の強磁性体であり、例えば保磁力、
飽和磁化の大きなコバルト・ニッケル・す７ （Ｃｏ−
Ｎｉ −Ｐ）、ｍｌバルト・クローム（Ｃｏ −Ｃｒ）
などの金属薄膜を用いた金属薄膜連続媒体を対象として
これに接して記録再生を行なうためのものである。In the figure, the material is a plate-shaped ferromagnetic material, for example, coercive force,
Cobalt-nickel-su7 (Co-
Ni-P), ml Baltic chrome (Co-Cr)
This device is intended for recording and reproducing on a metal thin film continuous medium using a metal thin film such as.
この強磁性体１を多孔質の材料例えば焼結金属例えばグ
ラフオイル、オイレス、多孔質ステアタイト、多孔質ア
ルミナなどのセラミックからなるホルダー２，２で両側
から保持する。そして前面を研磨してヘッド面３を形成
したのち、減圧膠囲気中で上記ホルダー２，２内に潤滑
剤を含浸させる。This ferromagnetic material 1 is held from both sides by holders 2, 2 made of a porous material such as a sintered metal, such as a ceramic such as Graphoil, Oiles, porous steatite, or porous alumina. After polishing the front surface to form the head surface 3, the holders 2, 2 are impregnated with a lubricant in a vacuum atmosphere.
このように、ホルダー２，２に酉滑剤を含浸させると、
金属薄膜連続媒体の当接摺動によりヘッド面３から常時
潤滑剤かにじみ出る。In this way, when the holders 2 and 2 are impregnated with lubricant,
The lubricant constantly oozes out from the head surface 3 due to the contact and sliding of the continuous metal thin film medium.
したがってこのような構成によれば、ホルダー２．２内
から金属薄膜連続媒体とヘッド面との間に潤滑剤が供給
されるため、媒体とヘッド面の摩擦抵抗を下げることが
でき、ヘッドの寿命を向上させることができる。しかも
、強磁性体１に耐摩耗特性の劣る高透磁率、高磁束密度
の優れた高透磁率磁性材料を用いることが可能になり、
材質の選択範囲を拡大することができる。Therefore, according to such a configuration, since lubricant is supplied from inside the holder 2.2 between the metal thin film continuous medium and the head surface, the frictional resistance between the medium and the head surface can be lowered, and the life of the head can be extended. can be improved. Moreover, it is now possible to use a high magnetic permeability magnetic material with excellent high magnetic flux density and poor wear resistance properties as the ferromagnetic body 1.
The selection range of materials can be expanded.
また、媒体が大きな面圧力をうけてヘッド面３を当接摺
動しても１．ヘッド面３から潤滑剤が常ににじみ出てく
るため、潤滑剤の枯渇を防止することができる。Also, even if the medium slides against the head surface 3 under a large surface pressure, 1. Since the lubricant constantly oozes out from the head surface 3, depletion of the lubricant can be prevented.
また磁気ヘッド自身が潤滑効果を有することにより、従
来のように媒体に潤滑剤を塗布する必要がなくなり、媒
体の製作工程を簡略化することができるとともに、テー
プのコストダウンを計ることができる。Furthermore, since the magnetic head itself has a lubricating effect, there is no need to apply lubricant to the medium as in the conventional method, which simplifies the manufacturing process of the medium and reduces the cost of the tape.
一方、金属を用いてホルダー２を形成すると、高周波領
域においてはうす電流損失によって金属表面にしか磁束
が流れないため、記録磁界のトラック幅方向のもれ磁界
を軽減することができる。On the other hand, when the holder 2 is formed of metal, magnetic flux flows only on the metal surface due to thin current loss in the high frequency region, so that the leakage magnetic field of the recording magnetic field in the track width direction can be reduced.
しかも、金属ホルダーを記録再生回路のアースと同電位
にすることにより、ノイズを軽減するこきができる。Furthermore, noise can be reduced by making the metal holder the same potential as the ground of the recording/reproducing circuit.
なお、この発明は上記実施例に限定されるものではなく
、要旨を変更しない範囲において種々変形して実施する
ことができる。Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without changing the gist.
この発明はホルダーを構成する多孔質材料として潤滑剤
を十分に含浸させる程度の細孔を有するものであれば前
述のような焼結金属、多孔質ステアタイト、多孔質アル
ミナなどのセラミックに限られるものではなく、これと
同等な他の材料を用いることができる。This invention is limited to ceramics such as the above-mentioned sintered metal, porous steatite, and porous alumina as long as the porous material constituting the holder has pores sufficient to impregnate the lubricant. Instead, other equivalent materials can be used.
添付図面はこの発明の一実施例を示す斜視図である。 ｌ・・・強磁性体 ２・・・ホルダー ３・・・ヘッド面 The accompanying drawing is a perspective view showing an embodiment of the present invention. l...Ferromagnetic material 2...Holder 3...Head surface
Claims (1)
において、記録再生用の強磁性体層と、この強磁性体層
を保持する多孔質性のホルダーとを具備し、このホルダ
ーに潤滑剤を含浸させたことを特徴とする磁気ヘッド。A magnetic head that performs recording and reproduction in contact with a magnetic recording medium is equipped with a ferromagnetic layer for recording and reproduction, and a porous holder that holds this ferromagnetic layer, and this holder is coated with lubricant. A magnetic head characterized by being impregnated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20057983A JPS6093607A (en) | 1983-10-26 | 1983-10-26 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20057983A JPS6093607A (en) | 1983-10-26 | 1983-10-26 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6093607A true JPS6093607A (en) | 1985-05-25 |
Family
ID=16426679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20057983A Pending JPS6093607A (en) | 1983-10-26 | 1983-10-26 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6093607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102576688B1 (en) * | 2023-01-05 | 2023-09-11 | 케이에이치특장 주식회사 | a vehicle for installation and collecting of a rubber cone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362515A (en) * | 1976-11-16 | 1978-06-05 | Fuji Photo Film Co Ltd | Magnetic head |
| JPS5446537A (en) * | 1977-09-21 | 1979-04-12 | Hitachi Ltd | Magnetic head |
| JPS5788512A (en) * | 1980-11-22 | 1982-06-02 | Tdk Corp | Magnetic head and its manufacture |
-
1983
- 1983-10-26 JP JP20057983A patent/JPS6093607A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362515A (en) * | 1976-11-16 | 1978-06-05 | Fuji Photo Film Co Ltd | Magnetic head |
| JPS5446537A (en) * | 1977-09-21 | 1979-04-12 | Hitachi Ltd | Magnetic head |
| JPS5788512A (en) * | 1980-11-22 | 1982-06-02 | Tdk Corp | Magnetic head and its manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102576688B1 (en) * | 2023-01-05 | 2023-09-11 | 케이에이치특장 주식회사 | a vehicle for installation and collecting of a rubber cone |
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