JPS6256571B2 - - Google Patents
Info
- Publication number
- JPS6256571B2 JPS6256571B2 JP57205834A JP20583482A JPS6256571B2 JP S6256571 B2 JPS6256571 B2 JP S6256571B2 JP 57205834 A JP57205834 A JP 57205834A JP 20583482 A JP20583482 A JP 20583482A JP S6256571 B2 JPS6256571 B2 JP S6256571B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- laminated
- substrate
- magnetic
- magnetic recording
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000005294 ferromagnetic effect Effects 0.000 claims description 5
- 229920006254 polymer film Polymers 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920003051 synthetic elastomer Polymers 0.000 claims description 2
- 239000005061 synthetic rubber Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 21
- 239000011241 protective layer Substances 0.000 description 13
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000007733 ion plating Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Description
【発明の詳細な説明】 本発明は磁気記録媒体に関するものである。[Detailed description of the invention] The present invention relates to magnetic recording media.
磁気テープや磁気デイスク等の磁気記録媒体と
して、最近、磁気記録密度が従来の塗布型に比べ
て非常に高い蒸着型のものが利用されるようにな
つてきた。 Recently, vapor deposition type magnetic recording media such as magnetic tapes and magnetic disks, which have a much higher magnetic recording density than conventional coating types, have come into use.
ところで、蒸着型の磁気記録媒体は、プラスチ
ツクフイルム等の基体に強磁性体金属を真空蒸着
法やイオンプレーテイング法、スパツタリング法
等により蒸着したものであり、磁性層が非常に薄
くて、弾性がほとんどなく使用中に磁気ヘツド等
のために損傷し易く、そのために通常は磁性層の
表面に保護層を設けている。しかしながら、従来
の保護層は一般に耐久性に乏しく、寿命が短い欠
点があつた。 Incidentally, a vapor-deposited magnetic recording medium is one in which a ferromagnetic metal is deposited on a substrate such as a plastic film by a vacuum vapor deposition method, an ion plating method, a sputtering method, etc., and the magnetic layer is very thin and has low elasticity. It is very easy to be damaged by magnetic heads and the like during use, and for this reason, a protective layer is usually provided on the surface of the magnetic layer. However, conventional protective layers generally have the disadvantage of poor durability and short lifespan.
本発明は、以上の欠点を改良し、耐久性が高く
寿命の長い磁気記録媒体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 magnetic recording medium with high durability and long life.
本発明は、上記の目的を達成するために、磁気
記録媒体において、第１基体に積層された弾性体
層と、該弾性体層に積層された第２基体と、該第
２基体に積層された強磁性体金属からなる磁性層
と、該磁性層に積層された保護層とを有すること
を特徴とする磁気記録媒体を提供するものであ
る。 In order to achieve the above object, the present invention provides a magnetic recording medium including an elastic layer laminated on a first substrate, a second substrate laminated on the elastic layer, and an elastic layer laminated on the second substrate. The present invention provides a magnetic recording medium characterized by having a magnetic layer made of a ferromagnetic metal, and a protective layer laminated on the magnetic layer.
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.
第１図において、１は第１基体であり、厚さ20
μ〜３mm程度のアルミ等の金属やポリエステル、
ポリカーボネート、ポリスチレン等の高分子フイ
ルムを用いている。２は第１基体１に積層された
弾性体層であり、５μ〜200μ程度のブタジエン
やスチレン系合成ゴム、天然ゴム、ポリウレタ
ン、ポリエチレン等からなる。３は弾性体層２に
積層された第２基体であり、厚さ４μ〜40μ程度
のポリエステルやポリイミド等の特に耐熱性の高
分子フイルムを用いている。４は、第２基体３に
積層された磁性層であり、鉄やコバルト、ニツケ
ル等の強磁性体金属を真空蒸着法やイオンプレー
テイング法、スパツタリング法により付着して形
成される。５は磁性層４に積層された保護層であ
り、厚さ数１／10μ程度のポリエステルやポリイ
ミド等からなる。 In FIG. 1, 1 is the first substrate, which has a thickness of 20
Metals such as aluminum and polyester with a diameter of μ to 3 mm,
Polymer films such as polycarbonate and polystyrene are used. Reference numeral 2 denotes an elastic layer laminated on the first substrate 1, which is made of butadiene, styrene synthetic rubber, natural rubber, polyurethane, polyethylene, etc. with a thickness of approximately 5 to 200 μm. A second base 3 is laminated on the elastic layer 2, and is made of a particularly heat-resistant polymer film such as polyester or polyimide having a thickness of about 4 to 40 microns. Reference numeral 4 denotes a magnetic layer laminated on the second substrate 3, which is formed by depositing a ferromagnetic metal such as iron, cobalt, or nickel by vacuum evaporation, ion plating, or sputtering. A protective layer 5 is laminated on the magnetic layer 4, and is made of polyester, polyimide, etc. and has a thickness of about 1/10 μm.
本発明は、上記の通りの構成であるから、使用
中に磁気ヘツド等が一定の圧力で接触した場合、
弾性体層２が途中に積層されているので、保護層
５に加わる力が軽減され、保護層５の損傷が減少
するので、保護層５の耐久性が増し、磁気記録媒
体６として寿命が増加する。 Since the present invention is configured as described above, when a magnetic head or the like comes into contact with a certain pressure during use,
Since the elastic layer 2 is laminated in the middle, the force applied to the protective layer 5 is reduced and damage to the protective layer 5 is reduced, increasing the durability of the protective layer 5 and extending the life of the magnetic recording medium 6. do.
第２図に、本発明の他の実施例を示しており、
特に第１基体１１の両側に弾性体層１２及び１３
を積層し、各弾性体層１２及び１３に、第２基体
１４及び１５を積層し、さらに第２基体１４及び
１５に磁性体層１６及び１７を積層し、磁性層１
６及び１７に保護層１８及び１９を積層してい
て、特に磁気デイスクとして用いうるもので、保
護層１８及び１９に加わる圧力を弾性体層１２及
び１３が吸収するので、保護層１８及び１９の耐
久性が向上し、寿命が増加する。 FIG. 2 shows another embodiment of the invention,
In particular, elastic layers 12 and 13 are provided on both sides of the first base body 11.
The second base bodies 14 and 15 are laminated on each of the elastic layers 12 and 13, and the magnetic layers 16 and 17 are further laminated on the second base bodies 14 and 15.
The protective layers 18 and 19 are laminated on the protective layers 18 and 17, and the elastic layers 12 and 13 absorb the pressure applied to the protective layers 18 and 19. Improved durability and increased lifespan.
なお、以上の実施例において磁性層の上に保護
層を積層しているが、例えば磁性層そのものに保
護物質が混入している場合には必ずしも積層しな
くてもよい。 Although the protective layer is laminated on the magnetic layer in the above embodiments, it may not necessarily be laminated if, for example, the magnetic layer itself contains a protective substance.
以上の通り、本発明によれば、基体に弾性体層
を積層して表面の保護層に加わる圧力を軽減でき
耐久性の高い、寿命の長い磁気記録媒体が得られ
る。 As described above, according to the present invention, a magnetic recording medium with high durability and a long life can be obtained by laminating an elastic layer on a substrate to reduce the pressure applied to the protective layer on the surface.
第１図は本発明の実施例の断面図、第２図は本
発明の他の実施例の断面図を示す。
１，１１……第１基体、２，１２，１３……弾
性体層、３，１４，１５……第２基体、４，１
６，１７……磁性層、５，１８，１９……保護
層。
FIG. 1 shows a sectional view of an embodiment of the invention, and FIG. 2 shows a sectional view of another embodiment of the invention. 1, 11...First base body, 2,12,13...Elastic body layer, 3,14,15...Second base body, 4,1
6, 17...magnetic layer, 5, 18, 19... protective layer.
Claims (1)
において、第１基体に積層された合成ゴム、天然
ゴム又はポリスチレンから選択された弾性体層
と、この弾性体層に積層された耐熱性を有する高
分子フイルム層からなる第２基体と、この第２基
体に積層された強磁性金属からなる磁性層とを有
することを特徴とする磁気記録媒体。1. A magnetic recording medium in which a ferromagnetic metal is attached to a substrate, which has an elastic layer selected from synthetic rubber, natural rubber, or polystyrene laminated on the first substrate, and a heat-resistant layer laminated on this elastic layer. A magnetic recording medium comprising a second substrate made of a polymer film layer and a magnetic layer made of a ferromagnetic metal laminated on the second substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57205834A JPS5996529A (en) | 1982-11-24 | 1982-11-24 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57205834A JPS5996529A (en) | 1982-11-24 | 1982-11-24 | Magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5996529A JPS5996529A (en) | 1984-06-04 |
| JPS6256571B2 true JPS6256571B2 (en) | 1987-11-26 |
Family
ID=16513480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57205834A Granted JPS5996529A (en) | 1982-11-24 | 1982-11-24 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5996529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020035915A1 (en) | 2018-08-15 | 2020-02-20 | ユニプレス株式会社 | Press-forming device and manufacturing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6276025A (en) * | 1985-09-30 | 1987-04-08 | Hoya Corp | Magnetic information recording medium |
-
1982
- 1982-11-24 JP JP57205834A patent/JPS5996529A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020035915A1 (en) | 2018-08-15 | 2020-02-20 | ユニプレス株式会社 | Press-forming device and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5996529A (en) | 1984-06-04 |
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