Optical recording in thin photoresist
US4316279A · kind A · utility
6Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1979 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Feb 28, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/261
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of producing an information storage disc by optical techniques includes the steps of coating a flat, reflective disc surface with a thin coating of radiant energy sensitive material, moving the coated disc relative to a coherent light beam, which is intensity modulated with the information to be recorded, to expose the radiant energy sensitive material, and developing the radiant energy sensitive material to form a track having geometric variations in the disc representative of the modulated information signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.