Apparatus for fabrication of magnetic recording media
US4220117A · kind A · utility
39Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1979 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Jan 31, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/851
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Within the vacuum atmosphere containing oxygen a cylindrical rotary can and an evaporation source are disposed in opposed relationship and in such a way that the normal line constructed at the center of the evaporation surface of the evaporation source will not intersect the axis of the cylindrical rotary drum. The beam of the evaporating ferromagnetic substance is directed to and impinged against the substrate transported along the rotary drum at right angles to the direction of transport thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.