Magnetic recording medium and manufacturing method therefor
US6670055B2 · kind B2 · utility
76Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12847
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium that is high coersive force, hard to receive influence of thermal fluctuation, and brings about a considerable improvement of S/N ratio, and in which at least an underlayer and a magnetic layer are sequentially laminated on a substrate, wherein a pre-coat layer is interposed between said underlayer and said substrate and said pre-coat layer is constructed by sequentially laminating a lower layer containing Ni and P and an upper layer made of a Cr alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.