Magnetic recording medium and process for producing the same
US6284361A · kind A · utility
10Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a substrate having provided thereon at least one intermediate layer essentially containing nonmagnetic powder and a binder and further having thereon a magnetic layer as an upper layer which essentially contains ferromagnetic powder and a binder, wherein the nonmagnetic powder in the intermediate layer is mainly acicular, and the acicular nonmagnetic powder has a coefficient of orientation (.alpha.) of 0 to 0.8 in the longitudinal direction in the surface thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.