Magnetic recording medium
US6913818B2 · kind B2 · utility
2Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31609
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a non-magnetic support and a magnetic layer containing a binder and a ferromagnetic metal powder dispersed in the binder, wherein the binder contains a polyurethane resin obtained from a polyester polyol, a chain extender, and an organic diisocyanate, and the magnetic layer has a product Π of coercive force Hc (kA/m) in an in-plane, longitudinal direction and magnetic flux Øm (Tμm) in a range of from 400 to 800.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.