Optical recording layers containing no k metallized formazan dyes mixed with symmetrical and unsymmetrical cyanine dyes
US5773193A · kind A · utility
7Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24612
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye with symmetrical and unsymmetrical cyanine dyes. The unrecorded layer is such that the real part of the refractive index (n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.00 to 0.02.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.