Method for the preparation of optical recording media containing overcoat
US5411838A · kind A · utility
6Cited by
11References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Nov 23, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Optical storage media based on ablative metals give improved stability and offer improved write-read characteristics when they are overcoated with inorganic oxide, nitride, carbide, hydride, oxynitride or carbohydride to a reflectivity of 40-80% at the media write/read wavelength. Preferably the metal and overcoat are applied by sputter-depositing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.