Magnetic recording medium
US4740418A · kind A · utility
1Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Mar 25, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, characterized in that said magnetic recording layer contains an acicular inorganic powder which has a Mohs' scale of hardness of not less than 5, a length of not longer than 1.0 .mu.m, a thickness of not thicker than 0.1 .mu.m, and an aspect ratio in the range of 5 to 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.