Magnetic recording medium
US4666754A · kind A · utility
11Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1985 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | Jun 20, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a non-magnetic substrate, a magnetic recording layer formed on the substrate, and a top coating layer formed on the magnetic recording layer, wherein the top coating layer contains a fine particulate pigment at its surface, and the surface roughness (R20) of the top coating layer is less than 400 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.