Magnetic recording media and magnetic recording system using the same
US6057021A · kind A · utility
24Cited by
1References
7Claims
0Family size
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Key dates
| Filing date | Oct 6, 1997 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Oct 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording medium having a non-magnetic disk substrate and a magnetic film formed on the surface of the non-magnetic disk substrate, a surface average roughness factor Ra(r) on the surface of the medium being from 0.3 nm to 3 nm, an orientation ratio of coercivity being from 0.1 to 0.7, and an in-plane magnetic anisotropic energy being from 3.times.10.sup.4 J/m.sup.3 to 5.times.10.sup.5 J/m.sup.3. By using such a medium, it is possible to provide a magnetic recording apparatus in which the magnetic head is capable of flying in a low position and high-density recording is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.