Data storage medium comprising colloidal metal and preparation process thereof
US7297448B2 · kind B2 · utility
2Cited by
12References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2002 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Nov 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a photopolymerizable holographic recording medium for data storage that comprises colloidal metal, and which exhibits a threshold for a second stage polymerization which is substantially insensitive to the light used for both forming holograms and interrogating the medium during servo and/or read events. Also disclosed is a method of preparing said photopolymerizable holographic recording medium. Also disclosed is a method for preparing a colloidal without additives in a viscous medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.