| abstract |
The azo pigment represented by following General formula (1), the tautomer of this azo pigment, and its salt or hydrate are provided. General formula (1) In General formula (1), Q represents the nonmetallic atom needed to complete a 5-7 membered heterocyclic group, W represents an alkoxy group, an amino group, an alkyl group, or an aryl group, X < 1> and X < 2> respectively independently represent hydrogen, An alkyl group, an acyl group, an alkylsulfonyl group or an arylsulfonyl group, R 1 represents hydrogen or a substituent, R 2 represents a heterocyclic group, n represents an integer of 1 to 4, and general formula (1) represents n = Q when 2 days, W, X 1, represents a dimer formed through X 2, R 1 or R 2, Q, if n = 3 days, through the W, X 1, X 2, R 1 or R 2, The trimer formed is shown and the tetramer formed through Q, W, X < 1> , X < 2> , R < 1> or R < 2> when n = 4 is shown. |