Magnetic recording medium and process for its production
US6051308A · kind A · utility
1Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1998 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Apr 7, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/257
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a flexible non-magnetic support, a non-magnetic primer layer containing a binder and non-magnetic particles, formed on the support, and a magnetic layer having a thickness of at most 0.5 .mu.m and containing a binder and a ferromagnetic acicular metal powder having an average long axis length (L) of at most 0.20 .mu.m and an aspect ratio (K) of at most 15, formed on the primer layer, wherein the variation (D) of the interface between the magnetic layer and the non-magnetic primer layer is represented by D.ltoreq.2L/K.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.