| abstract |
To provide an ink having a good hue and capable of forming an image having high fastness under various use conditions and environmental conditions. An azo dye having an oxidation potential of 1.10 V or more represented by the following general formula (1). [Chemical 1] In the formula, A and B each independently represent a substituted or unsubstituted heterocyclic group. L represents a specific heterocycle. m represents an integer of 2 or more. [Selection figure] None |