Patent ID: 6923855

Claim:
An ink, comprising at least one dye represented by formula (2) or (3): wherein, in formula (2), R 2 represents a monovalent group; R 3 represents a —OR 6 group or a —NHR 7 group in which R 6 and R 7 each represent a hydrogen atom or a monovalent group; X 2 represents a divalent linking group; n2 is an integer of 0 or 1; Ar 1 represents an aryl group or a heterocyclic group; and Ar 2 represents a divalent triazine ring group; wherein, in formula (3), R 4 represents a monovalent group; R 5 represents a —OR 6 group or a —NHR 7 group in which R 6 and R 7 each represent a hydrogen atom or a monovalent group; X 3 represents a divalent linking group; n3 is an integer of 0 or 1; Ar 3 represents a divalent heterocyclic group; and Ar 4 represents an alkyl group, an aryl group, or a monovalent triazine ring group.