JPS63121122A - Production of magnetic recording medium - Google Patents
Production of magnetic recording mediumInfo
- Publication number
- JPS63121122A JPS63121122A JP26700386A JP26700386A JPS63121122A JP S63121122 A JPS63121122 A JP S63121122A JP 26700386 A JP26700386 A JP 26700386A JP 26700386 A JP26700386 A JP 26700386A JP S63121122 A JPS63121122 A JP S63121122A
- Authority
- JP
- Japan
- Prior art keywords
- film
- magnetic recording
- stock
- cutting
- recording medium
- 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 20
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 13
- 239000010409 thin film Substances 0.000 claims abstract description 11
- 229920006267 polyester film Polymers 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 239000010408 film Substances 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 2
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229910020630 Co Ni Inorganic materials 0.000 description 2
- 229910002440 Co–Ni Inorganic materials 0.000 description 2
- 238000005566 electron beam evaporation Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910020515 Co—W Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は高密度磁気記録に適する磁気記録媒体の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a magnetic recording medium suitable for high-density magnetic recording.
従来の技術
近年、磁気記録の高密度化をめざして、強磁性金属薄膜
を磁気記録層とする磁気記録媒体の研究が盛んに行われ
ている。かかる磁気記録媒体は一般にポリイミド等の高
分子フィルム上に直接イオンブレーティング、スパッタ
リング、電子ビーム蒸着等の方法で、Ｃｏ −Ｎｉ 、
Ｃｏ −Ｏｒ等の強磁性金属薄膜を配し、潤滑剤を塗
布し、平坦化処理後、広幅の原反から所定の寸法に裁断
してテープ状媒体として用いられるものである。BACKGROUND OF THE INVENTION In recent years, with the aim of increasing the density of magnetic recording, research has been actively conducted on magnetic recording media in which a ferromagnetic metal thin film is used as a magnetic recording layer. Such magnetic recording media are generally made by depositing Co-Ni, Co-Ni, or
A ferromagnetic metal thin film such as Co--Or is disposed, a lubricant is applied, and after flattening, the wide original is cut into a predetermined size and used as a tape-shaped medium.
載断時に強磁性金属薄膜にクラックが発生するがその程
度をやわらげるために、潤滑剤を供給しながら裁断する
方法や、載断時に刃に超音波振動を加える等の提案がな
されている〔例えば特開昭５９−１１３５２８号公報参
照〕。Cracks occur in ferromagnetic metal thin films during shearing, but in order to reduce the severity, proposals have been made such as methods of cutting while supplying lubricant and applying ultrasonic vibration to the blade during shearing [for example, See Japanese Patent Application Laid-Open No. 59-113528].
発明が解決しようとする問題点
しかしながら、高密度化をはかるためには短波長化のみ
ならず、狭トラツク化を進めることが不可欠であるが、
トラック幅が１０μｍをきるようになった時、高分子フ
ィルムの平滑化と表面欠点を極力へらしても、ディジタ
ル記録再生でのエラー率が不安定になるといった問題が
あり、改善が望まれていた。本発明は、上記した事情に
鑑みなされたもので、エラー率の安定な高密度磁気記録
用の磁気記録媒体を大量に得られる製造方法を提供する
ものである。Problems to be Solved by the Invention However, in order to achieve higher density, it is essential not only to shorten the wavelength but also to narrow the track.
When the track width became less than 10 μm, even if the polymer film was smoothed and surface defects were minimized, there was a problem that the error rate in digital recording and playback became unstable, and an improvement was desired. . The present invention has been made in view of the above-mentioned circumstances, and provides a manufacturing method capable of producing a large amount of magnetic recording media for high-density magnetic recording with a stable error rate.
問題点を解決するための手段
上記問題点を解決するためＫ、本発明の磁気記碌媒体の
製造方法は、ポリエステルフィルム上に強磁性金属薄膜
を配した原反を所定の寸法に裁断する際、原反の温度を
１０℃から一２０℃の範囲に保つようにしたものである
。Means for Solving the Problems In order to solve the above-mentioned problems, the method for manufacturing a magnetic recording medium of the present invention provides a method for manufacturing a magnetic storage medium in which a polyester film is cut into predetermined dimensions. , the temperature of the original fabric is maintained within the range of 10°C to -20°C.
作 用
本発明の磁気記録媒体の製造方法は上記した構成により
、ポリエステルフィルムの裁断時のヤング率が実効的に
大きくなり、端面が高精度で構成されるようになるのと
、強磁性金属薄膜とポリエステルフィルムの動的にみた
ヤング率が接近するので、強磁性金属薄膜の端部での亀
裂発生やはぐシ現象が殆んど無視されるようになるため
、エラー率を大幅に改善しかつ安定化が図られるもので
ある。Effect: The method for producing a magnetic recording medium of the present invention has the above-described configuration, which effectively increases the Young's modulus when cutting the polyester film, allows the end face to be constructed with high precision, and allows the ferromagnetic metal thin film to be formed with high precision. Since the dynamic Young's modulus of the polyester film is close to that of the ferromagnetic metal thin film, cracking and peeling phenomena at the edges of the ferromagnetic metal thin film are almost ignored, which greatly improves the error rate. This is aimed at stabilization.
実施例
以下本発明の実施例について図面を参照しながら説明す
る。図は本発明によシ得られる磁気記録媒体の拡大断面
図である。図で１はポリエチレンテレフタレート、ポリ
エチレンナフタレート等のポリエステルフィルム、２は
水溶性高分子から成るみみず状の突起を有する下塗シ層
又は、Ｓ １０２−Ｔ １０２ ｐポリエチレン球等の
微粒子をバインダで固定した下塗シ層等で、３は電子ビ
ーム蒸着法。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings. The figure is an enlarged sectional view of a magnetic recording medium obtained according to the present invention. In the figure, 1 is a polyester film such as polyethylene terephthalate or polyethylene naphthalate, and 2 is an undercoat layer made of water-soluble polymer having worm-like protrusions, or fine particles such as S 102-T 102p polyethylene spheres fixed with a binder. Undercoat layer etc. 3 uses electron beam evaporation method.
スパッタリング法等で形成される。Ｃｏ−Ｎｉ、Ｃ。It is formed by a sputtering method or the like. Co-Ni,C.
−Ｆｅ、 Ｇｏ −Ｃｕ、 Ｃｏ−Ｃｒ、 Ｃｏ−Ｔａ
、 Ｃｏ −Ｗ 、 Ｃ。-Fe, Go -Cu, Co-Cr, Co-Ta
, Co-W, C.
−Ｔｉ、 Ｃｏ−０，Ｃｏ−０ｓ、 Ｇｏ −Ｐｔ、
Ｇｏ −Ｐ、 Ｃｏ −８ｍ、 Ｃｏ−Ｎｉ−０，Ｃｏ
−Ｎ１−Ｐ、 Ｃｏ−Ｃｒ −Ｎｂ等の強磁性金属薄膜
で、４は溶液塗布法、真空蒸着法等で形成した潤滑剤層
で脂肪酸、脂肪酸エステル。-Ti, Co-0, Co-0s, Go-Pt,
Go-P, Co-8m, Co-Ni-0, Co
4 is a ferromagnetic metal thin film such as -N1-P, Co-Cr-Nb, etc., and 4 is a lubricant layer formed by a solution coating method, a vacuum evaporation method, etc., and is a fatty acid or fatty acid ester.
脂肪酸アミド、フッ素化合物等から選ばれる。６はパッ
クコート層で、樹脂とフィラー、必要に応じて潤滑剤を
含ませることができる。Selected from fatty acid amides, fluorine compounds, etc. 6 is a pack coat layer, which can contain a resin, a filler, and, if necessary, a lubricant.
本発明の製造方法は図の構成の磁気テープを広い幅の原
反から必要な寸法のものとして得る条件に関するもので
、端面Ａ部を高精度に仕上げるために、裁断時にポリエ
ステルフィルムを一２０℃から１０℃の範囲に保つもの
である。−２０℃以下は端面に微細なわれが発生するこ
とがあり、１０℃以上では、端面に微細なポリエステル
の破片状のものが発生し、エラー率が不安定になるので
一２０℃から１０℃内で、好ましくは、−６℃から６℃
で裁断するのがよい。The manufacturing method of the present invention relates to the conditions for obtaining the magnetic tape having the configuration shown in the figure in the required dimensions from a wide raw material.In order to finish the end face A with high precision, the polyester film is heated at 120°C during cutting. The temperature should be kept within the range of 10 to 10 degrees Celsius. If the temperature is below -20℃, minute cracks may occur on the end face, and if the temperature is above 10℃, fine polyester fragments will occur on the end face, making the error rate unstable. preferably from -6°C to 6°C
It is best to cut it by
この範囲で裁断した磁気テープと比較例の両者の測定例
の一例を示す。An example of measurement of both a magnetic tape cut within this range and a comparative example is shown below.
庫み８．５μｍのポリエチレンテレフタレートフィルム
上に直径１３０人のＡｇ２Ｏ３微粒子を平均密度が６ケ
／（μｍ）となるようにポリエステル樹脂で固定した上
に、直径１ｍの円筒キャンに沿わせテ４．６ Ｘ １０
−５（Ｔｏｒｒ）の酸素中でＧｏ −Ｎｉ（Ｎｉ； ２
５ｗｔ％）を電子ビーム蒸着し、Ｑ 、１６ ｐ ｍの
強磁性金属薄膜を形成し、平坦化し、６０Ａのステアリ
ン酸を真空蒸着した原反を準備した。これを８ミリ幅に
裁断して、８ミリビデオを用いＰＣＭ記録再生でのエラ
ー率を比較した。テープＡは一６℃で裁断したもので、
テープＢは６℃で裁断したもので、テープＣは２０℃で
裁断したものである。4. On a polyethylene terephthalate film with a diameter of 8.5 μm, 130 Ag2O3 fine particles with a diameter of 130 were fixed with polyester resin so that the average density was 6 particles/(μm), and then placed along a cylindrical can with a diameter of 1 m. 6 x 10
-5 (Torr) of oxygen in Go -Ni (Ni; 2
A ferromagnetic metal thin film of Q and 16 pm was formed by electron beam evaporation of 5 wt %), flattened, and stearic acid of 60 A was vacuum evaporated to prepare an original fabric. This was cut into 8 mm width and the error rate in PCM recording and playback was compared using 8 mm video. Tape A was cut at -6℃.
Tape B was cut at 6°C, and Tape C was cut at 20°C.
初期のＰＣＭエラー率はテープＡ、Ｂ、Ｃ夫々２Ｘ１０
．３Ｘ１０ ．５Ｘ１０ で、６℃８０％ＲＨで
６０回（＃）返し走行させた時のＰＣＭエラー率はテー
プＡ、Ｂ、Ｃ夫々３Ｘ１０ 。The initial PCM error rate is 2x10 for each tape A, B, and C.
．． 3X10. The PCM error rate when tapes A, B, and C were run 60 times (#) at 6° C. and 80% RH was 3×10.
３．５Ｘ１０ ．４Ｘ１０ であった。3.5X10. It was 4X10.
発明の効果
以上のように本発明によれば、高密度ディジタル記録再
生でエラー率の良好な磁気記録媒体を大量に得られると
いったすぐれた効果がある。Effects of the Invention As described above, according to the present invention, there is an excellent effect that a large amount of magnetic recording media with a good error rate can be obtained in high-density digital recording and reproduction.
図は本発明により得られる磁気記録媒体の一実施例を示
す要部拡大断面図である。
１・・・・・・ポリエステルフィルム、３・・・・・・
強磁性金属薄膜。The figure is an enlarged sectional view of a main part showing an embodiment of a magnetic recording medium obtained by the present invention. 1...Polyester film, 3...
Ferromagnetic metal thin film.
Claims (1)
を所定の寸法に裁断する際に、原反の温度を、１０℃〜
−２０℃の範囲に保つことを特徴とする磁気記録媒体の
製造方法。When cutting a raw material with a ferromagnetic metal thin film arranged on a polyester film to a predetermined size, the temperature of the raw material is adjusted to 10℃~10℃.
A method for manufacturing a magnetic recording medium, characterized by maintaining the temperature in the range of -20°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26700386A JPS63121122A (en) | 1986-11-10 | 1986-11-10 | Production of magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26700386A JPS63121122A (en) | 1986-11-10 | 1986-11-10 | Production of magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63121122A true JPS63121122A (en) | 1988-05-25 |
Family
ID=17438708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26700386A Pending JPS63121122A (en) | 1986-11-10 | 1986-11-10 | Production of magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63121122A (en) |
-
1986
- 1986-11-10 JP JP26700386A patent/JPS63121122A/en active Pending
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