Method of recording an ablative optical recording medium
US4313188A · kind A · utility
19Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1979 |
| Grant date | Jan 26, 1982 |
| Priority date | — |
| Expiry date | Oct 22, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24624
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ablative optical recording medium comprises a substrate coated with a light reflecting coating of passivated aluminum which in turn is coated with a light absorbing ablative layer. During recording, portions of the light absorbing layer are ablated, or vaporized, by a modulated focussed light beam, thereby exposing portions of the reflective layer. Information is recorded in the form of a reflective-antireflective pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.