Thicker optical recording layers comprising a tetra dye having a metallized azo dianionic dye with cationic dye counterions
US6361922B1 · kind B1 · utility
1Cited by
7References
4Claims
0Family size
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Inventors
Key dates
| Filing date | Oct 16, 1996 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Aug 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses optical recording elements having optical recording layers containing tetra dyes. The dyes have metallized azo dianionic dye with cationic dye counterions. The recording layer has a thickness from 225 to 300 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.