Magneto-optical recording medium
US5639563A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | May 20, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium having a thin film with a suitable thermal conductivity, laminated on magneto-optical film, having excellent durability to repeated recording, reproducing and erasing comprising one layer or a multi-layer of thin film containing at least a magneto-optical recording film carried on a transparent substrate, a ferromagnetic reflection film having a reflectance to a reproduction beam of 70% or higher and a thermal conductivity at a normal temperature from 0.05 to 2.0 W/cm.deg laminated on the backside of the magneto-optical recording film viewed from the transparent substrate side and, optionally, a heat control layer having a thermal conductivity at a normal temperature of 0.1 to 2.0 W/cm.deg may be laminated on the backside of the magneto-optical film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.