Method for preparing magnetic recording medium
US4569856A · kind A · utility
3Cited by
0References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1985 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Mar 8, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for preparing a magnetic recording medium is described, comprising (1) pre-dispersing ferromagnetic particles having an S.sub.BET specific surface area of 35 m.sup.2 /g or more and having an adjusted water content of 0.8 wt % or more with a binder, (2) adding an additional binder and a lubricating agent thereinto, mixing and dispersing them to prepare a diserpsion of a magnetic coating composition, and (3) coating the resulting dispersion of a magnetic coating composition on a non-magnetic support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.