New triarylmethane / bis-azo metal complex dye compounds for optical data recording

摘要

The present invention relates to new triarylmethane / bis-azo metal complex dye compounds and their use as dyes in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength from 630 to 670 nm.

The invention further relates to an optical layer comprising said dyes and to a write only read many (WORM) type optical recording medium capable of recording and reproducing information with radiation of red laser, which employs an triarylmethane / bis-azo metal complex type dye in the optical layer.

In particular, the present invention relates to crystal violet / bis-azo metal complex dye compounds and their use as dyes in optical layers for optical data recording