Optical recording medium and method of reproducing information record on the optical recording medium
US5284691A · kind A · utility
9Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1992 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Oct 15, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an optical recording medium having recording film containing a photochromic material and a binder, in which the photochromic material is acid anhydride of diarylethene derivative and the binder is polycarbonate. Owing to this structure, the optical recording medium can reliably keep information recorded thereon even when the information is repeatedly reproduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.