Magnetic recording medium
US4567083A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1984 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Oct 16, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31609
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium including a magnetic layer formed on a plastic base and having perpendicular magnetic anisotropy suited for perpendicular magnetization, has a back coating formed on the rear side of the base opposite the magnetic side. The back coating is a thermoset coating cured from a thermosetting composition or a radiation-cured coating cured from radiation-curable composition containing at least one component having at least one acrylic, maleic, or allylic double bond. The back coating has an asperity in the range of 0.04 to 0.6 .mu.m. By suitably selecting the asperity the running quality and output profile are improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.