Jet aqueous pigment ink composition, an image forming method, an image forming material, ink set and inkjet printers

Pigment, dispersant, emulsion resin, an inkjet water-based pigment ink composition comprising water and an aqueous organic solvent, The average particle diameter of the emulsion resin is less than the average particle diameter of the pigment, and it is 70nm or less, The content of the emulsion resin is not less than the content of the pigment, and for the entire jet aqueous pigment ink composition is 10 wt% or less than 2 wt%, Aqueous organic solvent, 3-methoxy-3-methyl butanol and pyrrolidone solvents, for the entire jet aqueous pigment ink composition, and characterized in that it contains in the range of 2 wt% to 18 wt%, respectively jet aqueous pigment ink composition.