IN IN1325CHE2013A
[0001] An ink composition of the present invention includes, (a) a polymer compound which includes a repeating unit (a-1) having a partial structure expressed by the following General Formula (1), a repeating unit (a-2) which has a hydrophilic group and accounts for 8% to 25% by mass with respect to the total mass of the polymer compound, and a repeating unit (a-3) having a hydrophobic group, the polymer compound having a solubility parameter in an unneutralized state of 20.7 MPa1"2 to 23.0 MPa1/2; (b) water; and (c) a water-soluble organic solvent.
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