Composite magnetic recording disk
US4376963A · kind A · utility
31Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Mar 15, 1983 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/73925
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A composite structure for magnetic recording includes a core member of polymeric material to which is bonded at least one silicon disk having a magnetic recording material on its outer surface. The silicon disk surface provides optimal flatness and smoothness characteristics for a magnetic recording substrate, while the polymeric core member provides strength to the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.