| abstract |
An azo dye represented by formula (1): n nwherein, R 11 represents a monovalent substituent, R 12 represents a hydrogen atom or a monovalent substituent, Ar 1 represents a specific heterocyclic group such as a group such as a group shown below, and X represents atoms necessary to form a ring;n n nwherein, in the heterocyclic group, R 61 to R 63 each independently represents a hydrogen atom or a substituent. |