Optical data recording medium and manufacturing method thereof
US5904969A · kind A · utility
19Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Jul 5, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A desired writable optical data recording medium has a transparent substrate 1 where a side wall of a recess is connected to a land surface by a curved surface. A data recording portion of a dye material may be placed only in recesses of a pre-formatted pattern on a transparent substrate, and a reflective layer may be formed on the data recording portion and on the exposed land area between neighboring recesses. The medium can show reflectivity of not less than 65% on reproduction and reduce the cost for manufacturing thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.