Magnetic recording medium
US4812358A · kind A · utility
6Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Aug 21, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium is described which comprises a magnetic layer containing a magnetic powder, a first carbon black having a BET specific surface value of 80 m.sup.2 /g to 900 m.sup.2 /g and a DBP oil absorption value of less than 110 ml/100 g. The second carbon black is present in an amount of 3 to 15 parts by weight per 100 parts by weight of magnetic powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.