Optical recording medium, optical recording method and optical recording device
US6737143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium having a substrate and at least a recording layer disposed on the substrate, the recording layer comprising at least one squarylium metal chelate compound which comprises a squarylium compound and a metal; and at least one azo metal chelate compound which comprises another metal and an azo compound expressed by the following formula (A-I): where A and B each independently expresses a residue forming one of a) a heterocyclic ring which may comprise a substituent and b) aromatic ring which may comprise a substituent, by combination with corresponding carbon atoms respectively bonded to A or B, and X expresses an active-hydrogen-containing substituent group. An optical recording method, and optical recording device using the same optical recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.