Fluorescent composition for the manufacture of CD-ROM type optical memory disks
US6835431B1 · kind B1 · utility
12Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2001 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Sep 18, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A CD-ROM type optical disk, whether single-layer or multi-layer, is formed on a substrate having pits in its surface. The pits are filled with a fluorescent composition. Multiple disks such as that one can be glued on top of one another. Suitable fluorescent compositions include xanthene dyes of the eosine group, xanthene dyes of the rhodamine group, acridine dyes, oxazine dyes, azine dyes, indigoide dyes, perylene dyes, violanthrone dyes, cyanine dyes, phthalocynanine dyes, and porphyrins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.