INK JET RECORDING INK, INK JET RECORDING METHOD AND RECORDINGS

摘要

An ink jet recording ink composition comprising a surface treated pigment which has a dispersing group on the surface thereof and can be dispersed in an aqueous solvent by itself, and which shows an absolute value of zeta-potential of 30 mV or more as measured at 20 DEG C at a pH of 8 to 9 with respect to a water dispersion thereof obtained by 1000 times dilution (based on the weight of the pigment) with an ion exchanged water; and a penetrating agent. The ink composition provides a printed image showing reduced irregular blotting and having high density, can be dried quickly after printing, and has excellent storage stability.