Method of manufacturing a paint composite for magnetic films
US4229312A · kind A · utility
8Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1979 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Aug 13, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/7023
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a paint composite for magnetic films wherein a mixture consisting of a magnetic powder, a polymer such as polyvinylbutyral, and a solvent is ground under a shear stress of 10-400 kg/cm.sup.2, and the ground mixture has a solvent, an epoxy resin and a phenol resin added thereto and is further ground. When a magnetic disk is produced using a paint which has been obtained by executing the first grinding under a shear stress of 10-400 kg/cm.sup.2 with a kneader or the like, it is endowed with excellent electric characteristics and surface flatness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.