Method of manufacturing an optical information recorded disc
US5009818A · kind A · utility
26Cited by
11References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1989 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Nov 7, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing an optical information recorded disc. The method includes steps of forming a light-absorbing layer and a protective layer on a substrate, irradiating a laser through the substrate on the light-absorbing layer to form reproducible information which can be reproduced by a reproducible signal satisfying a standard of a compact disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.