Manufacturing method for multilayer fluorescent information carriers
US7226637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Jul 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24624
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information layer for an optical information storage medium is formed in a centrifuge. A photopolymerizable composition is applied to a solid base having a relief pattern, and a flexible, transparent film layer is applied on top of the composition. The three are spun in a centrifuge to cause a thin, even distribution of the photopolymerizable composition, which is photopolymerized. The resulting replica is separated from the relief pattern and has a fluorescent material applied thereto. Alternatively, the replica has a non-fluorescent material applied thereto, and the non-fluorescent material is made fluorescent through diffusion. Multiple information layers thus formed can be glued together to form a multilayer optical information storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.