Optical recording employing diacetylene compound and dye to change color and form pits
US4863832A · kind A · utility
10Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1986 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Dec 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording method is provided which comprises a step of irradiating light corresponding to recording information on the optical recording medium having a recording layer containing at least one selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes or polymethine compounds and a diacetylene derivative compound to thereby form a pit on said recording layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.