| 摘要 |
PROBLEM TO BE SOLVED: To provide an information recording medium having high recording characteristics and having a high stability capable of sufficiently maintaining the recording characteristics for a long period. SOLUTION: The information recording medium comprises a recording layer containing a metal complex dye obtained by reacting a compound represented by formula (I) with a metal compound, [wherein A1 and A2 are each an atom group necessary to form a heterocyclic ring together with C and N, heterocyclic ring skeletons represented by A1 and A2 may be the same or different, R1 , R2 , R3 and R4 may be the same or different, and are each a hydrogen atom or a monovalent substituent, the R2 and R3 may be coupled to form a carbon ring or the heterocyclic ring]. |
