Magnetic record member
US4152487A · kind A · utility
28Cited by
3References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Dec 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic record member for use in magnetic recording devices is disclosed. The record member comprises a non-magnetic alloy disk polished to a mirror surface, a non-magnetic alloy layer formed on the disk, a magnetic thin film medium formed on the surface of the alloy layer, and a protective polysilicate film layer formed on the alloy layer. In certain embodiments, an oriented lubricant layer is formed on the polysilicate film layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.