Replicable optical recording medium
US4300227A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1979 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Oct 17, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/25715
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium which comprises a light reflective layer, a light transmissive layer and a light absorptive layer where the light transmissive layer is comprised of an organic material which has a melting, sublimation or decomposition temperature at least 300.degree. C. less than that of the material comprising the absorptive layer and where the absorptive layer has a melting temperature of at least 1000.degree. C. Information is recorded as bubbles in the absorptive layer. This storage mechanism produces topographical features which are suitable for replication, thus allowing direct replication of the recorded information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.