Magnetic recording media, manufacturing method for thereof and apparatus for using the media
US6395412B1 · kind B1 · utility
4Cited by
4References
4Claims
0Family size
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Key dates
| Filing date | Sep 20, 1999 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Sep 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Surface roughness of the magnetic layer and the protective layer is flatter than the surface roughness of the substrate to decrease medium noise, hereby levitation stability of the magnetic head in the ultra low region and high density recording is obtained, for magnetic recording medium and magnetic disk apparatus of high reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.