Process for producing optical recording medium for optical data recording and reproduction
US5248990A · kind A · utility
10Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | May 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium for optical data recording and reproduction is produced through a process including the steps of forming an optical recording layer comprising an organic film on a substrate and irradiating the organic film with laser light to scatter the irradiated portion of the organic film, thus forming a tracking groove thereat and leaving an optical recording part along the tracking groove. The thus formed optical recording part and tracking groove provide a high reflectivity ratio or a high reflective contrast, whereby a good tracking fidelity is ensured during the optical recording and reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.