METAL CHELATE PIGMENT AND OPTICAL RECORDING MEDIUM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a coloring material that can be used as an optical recording medium suitable for record regeneration with the short-wavelength semiconductor laser. SOLUTION: The objective metal chelate coloring material comprises a metal and a compound represented by the following general formula (1) or (1)' (wherein A and A' are each a heteroaromatic ring residue involving the carbon atoms and nitrogen atoms bonding to these A and A'; X is a group having an active hydrogen atom; Y is a hydrogen atom or an arbitrary substituent).