Manufacturing process for foil magnetic recording disks
US4328607A · kind A · utility
5Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1979 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Dec 10, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49867
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording device employing a thin foil member is fabricated by radially compressing a ring member, securing the periphery of the foil member to the compressed ring, releasing the compression on the ring so that it expands to produce tension in the foil member. A magnetic coating may be applied to the foil member either before or after securing it to the ring member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.