| 摘要 |
PROBLEM TO BE SOLVED: To provide a new compound or a dyestuff excellent in light fastness, dark heat fastness, ozone resistance and the like and exhibiting high concentration black, and to provide an ink composition and the like containing the dyestuff. SOLUTION: The ink composition contains the compound or the dyestuff expressed by formula (1). In formula (1), Z1 , Z2 , Z4 , Z5 , Z7 , Z8 , and Z9 independently denote a nitrogen atom or a CR11 group. Z3 , Z6 , and Z10 independently denote a non-metal atomic group capable of forming a 5-7 member ring. R1 and R2 independently denote a halogen atom, an alkoxy group, a hydroxy group, or a substituted or non-substituted amino group. R3 and R4 independently denote a hydrogen atom or a substituted group. m denotes 0 or a; n denotes an integer of 0-4; and q denotes 1 or 2. R11 denotes a hydrogen atom or a substituted group. When n is a plural number, R2 may be the same of different to each other. When q is 2, Z8 , Z9 and Z10 may be the same of different to each other. |
