| 摘要 |
An optical recording medium which can be recorded and read at a short wavelength (about 635-680 nm) or which can be recorded and read at two wavelengths, the short wavelength and a conventional wavelength (about 780 nm) has a recording layer containing an azo metal complex dye obtained by reacting a metal compound with an azo compound of formula (I) or an azo compound of formula (II). <IMAGE> (I) Q1NNQ2 (II) In formula (I), Q1 is a group of atoms necessary to form an aromatic ring with two C, A is C or a hetero-atom, Q2 is a group of atoms necessary to form an aromatic ring with two C and A, and Q3 is a group of atoms necessary to form an aromatic ring with C, N and A, fused to the aromatic ring completed by Q2. In formula (II), Q1 is a 8-quinolyl radical and Q2 is a 2-imidazolyl radical whose nitrogen at the 1-position has active hydrogen.
|
