Patent ID: 8361213

Claim:
An ink composition comprising pigment particles covered with a water-insoluble resin, resin particles, a water-soluble organic solvent, water, and a solid wetting agent in an amount of 5% by mass or more, wherein the water-soluble organic solvent comprises at least one alkyleneoxide adduct of glycerin; and the at least one alkyleneoxide adduct of glycerin includes a compound represented by Formula (1): wherein in Formula (1), AO represents an ethyleneoxy group and/or a propyleneoxy group, provided that the AO in the (AO) l , (AO) m and (AO) n in formula (1) may be the same respectively, or may be different from one another; l, m and n each independently represents an integer of 1 or more and the relationship of 3≦l+m+n≦15 is satisfied.