Optical recording media
US5271978A · kind A · utility
28Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Jan 31, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Optical recording films made from alloys of antimony-tin and a third element exhibit improved properties when formed in an atmosphere containing oxygen. The amount of oxygen in the sputtering environment is controlled. Improvements include higher amorphous to crystalline transition temperature, improved carrier to noise ratio (CNR) and greater stability of the recorded film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.