Powder for magnetic recording media and process for manufacturing the same
US4578313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1983 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Sep 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A powder for a magnetic recording medium comprising a plurality of magnetic particles and a coating covering the surfaces of the magnetic particles. The coating is a residue resulting from the thermal decomposition of an organic material. The powder is manufactured by applying one or more organic materials to the surfaces of a plurality of magnetic particles by dispersing the magnetic particles in a solution containing the organic material. The magnetic particles, having the organic material as a coating, are separated from the solution, and the magnetic particles are heated to a temperature at which the organic material decomposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.