Inkjet ink composition, ink set, and image forming method

摘要

An inkjet ink composition includes a colorant, two or more hydrophilic organic solvents, and particles of a polymer containing a structural unit derived from a hydrophilic monomer and a structural unit derived from a hydrophobic monomer. The polymer has a glass transition temperature of 150° C. or higher and an I/O value of from 0.2 to 0.55, and the particles of the polymer have a volume average particle diameter of from 0.1 to 10 nm.