Magnetic recording medium
US4645703A · kind A · utility
25Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Oct 10, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24851
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprises steep mountain-shaped protrusions having heights ranging 50-600 .ANG. and distributed at a rate of 1.times.50.sup.5 -1.times.10.sup.8 protrusions/mm.sup.2 on a surface of ferromagnetic metal layer and further thereon a lubricant layer; the magnetic recording medium is suitable for VTR tape which has a satisfactory durability for repeated use and eliminates head clogging and squealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.