Aqueous pigment ink composition for inkjet, image forming method, image formed product, ink set, and inkjet printer

摘要

An aqueous pigment ink composition for inkjet, comprising a pigment, a dispersant, an emulsion resin, water and an aqueous organic solvent, wherein the average particle size of the emulsion resin is smaller than the average particle size of the pigment and not more than 70 nm; The content of the emulsion resin is not less than the content of the pigment and not less than 2% by mass and not more than 10% by mass with respect to the entire aqueous pigment ink composition for inkjet. The aqueous organic solvent is 3-methoxy A water-based pigment ink composition for ink-jet, comprising -3-methylbutanol and a pyrrolidone-based solvent in a range of 2% by mass or more and 18% by mass or less, respectively, with respect to the whole water-based ink pigment ink composition.