JPS60119635A - Manufacture of magnetic recording medium - Google Patents
Manufacture of magnetic recording mediumInfo
- Publication number
- JPS60119635A JPS60119635A JP22578683A JP22578683A JPS60119635A JP S60119635 A JPS60119635 A JP S60119635A JP 22578683 A JP22578683 A JP 22578683A JP 22578683 A JP22578683 A JP 22578683A JP S60119635 A JPS60119635 A JP S60119635A
- Authority
- JP
- Japan
- Prior art keywords
- foundation layer
- ferromagnetic metal
- thin film
- magnetic recording
- concavities
- 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
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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は下地層を有する磁気記録媒体の製造方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a magnetic recording medium having an underlayer.
磁気テープ等の磁気記録媒体として、鉄等の強磁性金属
を真空蒸着法やイオンブレーティング法、スパッタリン
グ法等により基体に付着して強磁性金属S膜を形成した
il膜型のものが用いられるようになってきた。As a magnetic recording medium such as a magnetic tape, an IL film type is used, in which a ferromagnetic metal such as iron is attached to a substrate by vacuum evaporation, ion blating, sputtering, etc. to form a ferromagnetic metal S film. It's starting to look like this.
ところで、このような薄膜型の磁気記録媒体は、従来の
塗布型に比べて、記録密度が非常に高く、小型化が可能
であるという長所を有している反面、強磁性金属薄膜表
面が滑らかなために走行性が悪く、損傷し易い欠点があ
る。Incidentally, such thin-film magnetic recording media have the advantage of having a much higher recording density and being smaller in size than conventional coating-type magnetic recording media, but on the other hand, the ferromagnetic metal thin film surface is smooth. For this reason, they have the disadvantage of poor running performance and being easily damaged.
このような欠点を改良するために、強磁性金属薄膜表面
に11!IWi層を設けたものもあるが、十分な効果が
得られない欠点があった。In order to improve these defects, 11! is applied to the surface of the ferromagnetic metal thin film. Although some devices are provided with an IWi layer, they have the drawback that sufficient effects cannot be obtained.
本発明は、以上の欠点を改良し、走行性の優れた磁気記
録媒体の製造方法の提供を目的とするものである。The present invention aims to improve the above-mentioned drawbacks and provide a method for manufacturing a magnetic recording medium with excellent running properties.
本発明は、上記の目的を達成するために、基体に下池層
を設け、該下地層表面に強磁性金属Wj躾を形成しつる
磁気記録媒体の製造方法において、下地層の表面にレー
ザー光を局部的に照射してスパッターさせ、該表面に凹
部を設けることを特徴とする磁気記録媒体の製造方法を
提供するものである。In order to achieve the above object, the present invention provides a method for manufacturing a magnetic recording medium in which a base layer is provided on a substrate and a ferromagnetic metal layer is formed on the surface of the base layer, in which a laser beam is applied to the surface of the base layer. The present invention provides a method for manufacturing a magnetic recording medium, which is characterized by locally irradiating and sputtering to form recesses on the surface.
以下、本発明゛の実施例を図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
先ず、第1図に示す通り、ポリエステルやボリエチレン
等の高分子フィルムからなる基体1に、ANやOr、S
i 、Ta、Th、Ti等の物質を蒸着して厚さ50〜
400人程度の下地112を形成する。First, as shown in FIG. 1, a substrate 1 made of a polymer film such as polyester or polyethylene is coated with AN, Or, S
i, Ta, Th, Ti, etc. are deposited to a thickness of 50~
A base 112 for about 400 people is formed.
次に、第2図に示す通り、下地層2の表面に、炭酸ガス
レーザー等を用いてスポット径1μでレーザー光を局部
的に照射し、スパッターさ才て、凹部3を分散して設け
る。下地層2に凹部3を設けた後、第3図に示す通り、
下地112表面に、F8やco、Ni等の強磁性金属を
真空蒸着法やイオンブレーティング法、スパッタリング
法等により蒸着して強磁性金属薄膜4を形成する。Next, as shown in FIG. 2, the surface of the underlayer 2 is locally irradiated with a laser beam using a carbon dioxide laser or the like with a spot diameter of 1 μm to disperse the recesses 3 by sputtering. After providing the recess 3 in the base layer 2, as shown in FIG.
A ferromagnetic metal thin film 4 is formed on the surface of the base 112 by depositing a ferromagnetic metal such as F8, cobalt, or Ni using a vacuum evaporation method, an ion blasting method, a sputtering method, or the like.
すなわち、本発明によれば、下地1!2に凹部3を設け
ているために、その上に積層された強磁性金属薄膜4の
表面が凹凸になる。それ故、磁気テープや磁気ディスク
等として走行あるいは回転させた場合、強磁性金属wi
膜4の表面と磁気ヘッド等との摩擦が軽減され、これ等
の磁気記録媒体の走行性が改良される。That is, according to the present invention, since the recesses 3 are provided in the bases 1 and 2, the surface of the ferromagnetic metal thin film 4 laminated thereon becomes uneven. Therefore, when running or rotating as a magnetic tape or magnetic disk, ferromagnetic metal wi
Friction between the surface of the film 4 and magnetic heads, etc. is reduced, and the running properties of these magnetic recording media are improved.
なお、下地層に凹部3を形成するのに、レーザー光を用
いているため、凹部3を設ける位置を正確に決定でき、
凹部3が互いに連結されるのを防止でき、予め走行性の
改良率を定めつる長所がある。In addition, since laser light is used to form the recesses 3 in the base layer, the position where the recesses 3 are to be formed can be determined accurately.
This has the advantage that the concave portions 3 can be prevented from being connected to each other, and that the rate of improvement in running performance can be determined in advance.
上記の実施例においては、強磁性金属薄膜を雰囲気に露
出した構成としたが、他に、第4図に示す通り、強磁性
金属薄膜4の表面に、凹凸が残るような厚さにllI!
l滑層5を形成してもよい。In the above embodiment, the ferromagnetic metal thin film 4 is exposed to the atmosphere, but as shown in FIG.
A slip layer 5 may also be formed.
以上の通り、本発明によれば、摩擦を軽減でき走行性の
優れた磁気記録媒体の製造方法が得られる。As described above, according to the present invention, a method for manufacturing a magnetic recording medium with reduced friction and excellent running properties can be obtained.
第1図ないし第3図は本発明により製造された磁気記録
媒体の製造過程を示し、第1図は下地層を形成した状態
の断面図、第2図は下地層に凹部を形成した状態の断面
図、第3図は強磁性金1iii1躾を形成した状態の断
面図、第4図は潤滑層を形成した状態の断面図を示す。
1・・・基体、 2・・・下地層、 3・・・凹部、4
・・・強磁性金属薄膜、 5・・・潤滑層。Figures 1 to 3 show the manufacturing process of the magnetic recording medium manufactured according to the present invention, with Figure 1 being a cross-sectional view of the underlayer with the underlayer formed, and Figure 2 being the cross-sectional view of the underlayer with recesses formed. 3 shows a cross-sectional view with a ferromagnetic gold layer formed thereon, and FIG. 4 shows a cross-sectional view with a lubricant layer formed. DESCRIPTION OF SYMBOLS 1... Base body, 2... Base layer, 3... Recessed part, 4
...Ferromagnetic metal thin film, 5...Lubricating layer.
Claims (1)
属薄膜を形成しつる磁気記録媒体の製造方法において、
下地層の表面にレーザー光を局部的に照射してスパッタ
ーさせ、該表面に凹部を設けることを特徴とする磁気記
録媒体の製造方法。(1) A method for manufacturing a magnetic recording medium in which an underlayer is provided on a substrate and a ferromagnetic metal thin film is formed on the surface of the underlayer,
1. A method for manufacturing a magnetic recording medium, which comprises locally irradiating the surface of an underlayer with a laser beam to cause sputtering, thereby forming recesses on the surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22578683A JPS60119635A (en) | 1983-11-30 | 1983-11-30 | Manufacture of magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22578683A JPS60119635A (en) | 1983-11-30 | 1983-11-30 | Manufacture of magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60119635A true JPS60119635A (en) | 1985-06-27 |
Family
ID=16834753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22578683A Pending JPS60119635A (en) | 1983-11-30 | 1983-11-30 | Manufacture of magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60119635A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6395412B1 (en) | 1999-05-24 | 2002-05-28 | Hitachi, Ltd. | Magnetic recording media, manufacturing method for thereof and apparatus for using the media |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56165933A (en) * | 1980-05-27 | 1981-12-19 | Toshiba Corp | Production of magnetic recording body |
JPS5784115A (en) * | 1980-11-14 | 1982-05-26 | Tdk Corp | Manufacture of magnetic thin film |
JPS57147128A (en) * | 1981-03-07 | 1982-09-10 | Tdk Corp | Magnetic recording medium and its manufacture |
JPS5877030A (en) * | 1981-10-31 | 1983-05-10 | Hitachi Maxell Ltd | Magnetic recording medium and production thereof |
-
1983
- 1983-11-30 JP JP22578683A patent/JPS60119635A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56165933A (en) * | 1980-05-27 | 1981-12-19 | Toshiba Corp | Production of magnetic recording body |
JPS5784115A (en) * | 1980-11-14 | 1982-05-26 | Tdk Corp | Manufacture of magnetic thin film |
JPS57147128A (en) * | 1981-03-07 | 1982-09-10 | Tdk Corp | Magnetic recording medium and its manufacture |
JPS5877030A (en) * | 1981-10-31 | 1983-05-10 | Hitachi Maxell Ltd | Magnetic recording medium and production thereof |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6395412B1 (en) | 1999-05-24 | 2002-05-28 | Hitachi, Ltd. | Magnetic recording media, manufacturing method for thereof and apparatus for using the media |
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