Optical recording medium
US5344682A · kind A · utility
8Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1992 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Jun 12, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium of a single plate type comprises a substrate having a groove, a recording layer containing a dye overlying the substrate, a reflective layer overlying the recording layer and a protective layer overlying the reflective layer, wherein the recording layer is formed by a spin-coating method and the dimension of the groove varies from the center portion of the substrate toward the outer periphery thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.