Magnetooptical recording medium having improved sensitivity
US5341349A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Nov 25, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10591
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium comprises, at least a transparent base plate, a dielectric layer formed on one major surface of the transparent base plate, and a recording magnetic layer formed over the dielectric layer. The dielectric layer may be a single-layer structure consisting of a dense dielectric film or may be a two-layer structure consisting of a porous dielectric film formed contiguously with the transparent base plate, and a dense dielectric film formed contiguously with the recording magnetic layer. The magneto-optical recording medium has high recording magnetic field sensitivity and excellent mechanical properties, and is capable of satisfactorily functioning for recording/reading operation on either a magnetic modulation recording system or an optical modulation recording system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.