| abstract |
An object of the present invention is to provide an ink and a dye containing a heterocyclic azo dye having excellent solubility in a low polar solvent, a high extinction coefficient, and high light resistance. This invention solves the said subject by using the ink containing the low polar solvent whose relative dielectric constant is 3 or less in the measurement frequency of 1 KHz, and the heterocyclic azo dye represented by the following general formula (I). [In General Formula (I), A is a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms which may have a substituent, or an alkoxy having 1 to 20 carbon atoms which may have a substituent. Group or NHCOR 6 group, X represents a nitrogen atom or a methine group which may have a substituent] [Chemical 1] |