Magnetic recording medium and method for making
US4637963A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Nov 19, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording medium comprising a non-magnetic substrate having opposed major surfaces, a non-magnetic undercoat on one major surface of the substrate, a magnetic layer on the undercoat, and a non-magnetic backcoat on the other major surface of the substrate, at least one of said undercoat and said backcoat is formed of a coating composition comprising a radiation curable base resin preferably having a radiation-sensitive double bond such as acrylic, maleic or allylic double bond, an optional thermoplastic resin, and an effective amount of an anti-static agent selected from known surface-active agents, the composition being cured through crosslinking by exposure to radiation. The magnetic recording medium is prepared by mixing the resins with the anti-static agent, coating the substrate with the composition, and exposing the coating to radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.