Magnetic recording medium
US4801505A · kind A · utility
13Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Oct 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium contains in its magnetic recording layer a ferromagnetic metal powder containing an aluminum component in an amount of 1 to 6% by weight as alumnum metal, and an extremely hard abrasive such as .alpha.-alumina, chrome oxide, silicon carbide and silicon nitride. A magnetic recording medium preferably contains in its magnetic recording layer a binder comprising a resin component having a polar group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.