JPS62138311U - - Google Patents
Info
- Publication number
- JPS62138311U JPS62138311U JP2366186U JP2366186U JPS62138311U JP S62138311 U JPS62138311 U JP S62138311U JP 2366186 U JP2366186 U JP 2366186U JP 2366186 U JP2366186 U JP 2366186U JP S62138311 U JPS62138311 U JP S62138311U
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- substrate
- perpendicular magnetic
- magnetic recording
- layer
- 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
- 239000000758 substrate Substances 0.000 claims description 5
- 230000005415 magnetization Effects 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims 1
Landscapes
- Magnetic Record Carriers (AREA)
Description
第１図及び第２図は、それぞれ本考案の一実施
例による垂直磁気記録媒体の構成を示す斜視図及
び断面図、第３図及び第４図は、それぞれ垂直磁
化層の表面に凹凸を設けた場合及び凹凸を設けな
い場合の記録媒体の回転に要するモータ電流とト
ラツク番号との間の関係を示すグラフである。
図中、１…垂直磁気記録媒体、２…基板、３…
垂直磁化層、３Ａ…凹凸である。
1 and 2 are a perspective view and a cross-sectional view, respectively, showing the structure of a perpendicular magnetic recording medium according to an embodiment of the present invention, and FIGS. 3 and 4 respectively show an uneven surface of a perpendicular magnetic layer. 7 is a graph showing the relationship between the motor current required to rotate the recording medium and the track number in the case where the recording medium is provided with unevenness and in the case where no unevenness is provided. In the figure, 1... perpendicular magnetic recording medium, 2... substrate, 3...
Perpendicular magnetization layer, 3A: unevenness.
Claims (1)
磁化層とをそれぞれ有する垂直磁気記録媒体にお
いて、記録再生時に信号出力の極度の低下が生じ
ない程度の大きさの凹凸が形成されるように上記
基板及び上記垂直磁化層の少なくとも一方の表面
を粗面化したことを特徴とする垂直磁気記録媒体
。 (2) 上記基板又は上記垂直磁化層の表面の粗さ
が５０〜５００Åであることを特徴とする実用新
案登録請求の範囲第１項記載の垂直磁気記録媒体
。[Claims for Utility Model Registration] (1) In a perpendicular magnetic recording medium having a substrate and a perpendicular magnetization layer provided on the substrate, a magnetic recording medium having a magnetic field that is large enough to prevent an extreme drop in signal output during recording and reproduction. 1. A perpendicular magnetic recording medium, characterized in that a surface of at least one of the substrate and the perpendicular magnetic layer is roughened so as to form unevenness. (2) The perpendicular magnetic recording medium according to claim 1, wherein the substrate or the perpendicular magnetic layer has a surface roughness of 50 to 500 Å.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2366186U JPS62138311U (en) | 1986-02-20 | 1986-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2366186U JPS62138311U (en) | 1986-02-20 | 1986-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62138311U true JPS62138311U (en) | 1987-09-01 |
Family
ID=30822171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2366186U Pending JPS62138311U (en) | 1986-02-20 | 1986-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62138311U (en) |
-
1986
- 1986-02-20 JP JP2366186U patent/JPS62138311U/ja active Pending
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