Process of manufacturing a magnetic record member
US4390562A · kind A · utility
23Cited by
0References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1982 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Feb 9, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/7253
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic record for use in magnetic disc or drum recording playback systems is provided with at least a solid lubricant thin-film outer surface. The lubricant is applied to the disc surface by rubbing under pressure to obtain a uniform lubricant layer of a thickness less than the particle diameter of the original lubricant. By properly selecting the material underlying the surface layer, the lubricant can be made to strongly adhere thereto such that an excellent lubricating effect is obtained between the record and the recording/playback head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.