Sensitizer dyes for photoacid generating systems
US7892702B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Feb 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/249
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Photosensitizing dyes are often used in conjunction with a photoacid generator in holographic recording media. Conventional photosensitizing dyes typically are limited by having an appreciable absorption of light when used in a sufficient concentration, such that the intensity of light decreases significantly with penetration into a recording medium. The present invention discloses a number of new 5-alkynyl substituted napthacene photosensitizing dyes that have low extinction coefficients coupled with good sensitizing properties, such that the problems associated with the photosensitizing dyes absorbing light are significantly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.