Aqueous ink composition and image formation method using the same

摘要

An aqueous ink composition includes a dye component which contains a water-soluble xanthene dye or a water-soluble phthalocyanine dye, each of which includes a moiety of formula (I) when the water-soluble dye is in the form of a free acid, <IMAGE>mposition, a method of forming images on an image receiving medium is performed which includes the step of ejecting the aqueous ink composition in the form of droplets by the application of thermal or mechanical energy thereto onto an image receiving medium with a St+E,uml o+EE ckigt size degree of 3 seconds or more as defined in the Japanese Industrial Standards P-8122.