Optical information recording medium, method of recording information, and azo metal complex dye
US8092890B2 · kind B2 · utility
1Cited by
3References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 11, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Jul 28, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The optical information recording medium comprises a recording layer on a surface of a support. The surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye, the azo metal complex dye is a complex of one or more azo dye and transition metal ions of which number is equal to or greater than the number of the azo dye. The azo metal complex dye comprises two or more transition metal ions per molecule, and in a molecule of the azo metal complex dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.