Magnetic recording medium and process for producing the same
US4957825A · kind A · utility
1Cited by
4References
37Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 27, 1988 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Jan 27, 2008 |
Classification
- Technology area (CPC —)General
Abstract
A magnetic recording medium comprising a substrate, a ferromagnetic thin film formed on the substrate, and a protective film formed directly on the ferromagnetic thin film, and a process for producing such magnetic recording medium. The expression "formed directly" refers to the technique for forming the protective film on the ferromagnetic thin film so that the interface therebetween is free from contamination by, for instance, conducting the protective film formation under the vacuum used when forming the ferromagnetic thin film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.