Recording elements comprising write-once thin film alloy layers
US4774170A · kind A · utility
21Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Jun 5, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Optical recording and record elements are provided. The elements comprise a write-once amorphous thin-film optical recording layer of an alloy having a composition within a polygon in a ternary composition diagram of antimony, zinc, and tin; wherein PA0 (a) the composition diagram is according to FIG. 7 herein; and PA0 (b) the polygon has the following vertices and corresponding coordinates in atom percent: ______________________________________ Coordinates Vertices Sb Sn Zn ______________________________________ A 98 0 2 B 54 44 2 C 30 44 26 D 30 10 60 E 70 0 30 ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.