Magnetic recording medium
US4746558A · kind A · utility
49Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Mar 19, 2006 |
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 and a coating type magnetic recording layer formed on the substrate, wherein barium ferrite magnetic powder is perpendicularly oriented, characterized in that an undercoating layer comprising a radiation curable binder and carbon black, is provided beneath the magnetic recording layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.