Aqueous pigmented ink formulation containing polymer-encapsulated pigments, binder and smectite clay particles

摘要

An ink jet ink composition comprising from about 30 to about 90% by weight of water, from about 0.5 to about 30% by weight of a composite colorant, from about 0.1 to about 10% by weight of natural or synthetic smectite clay mineral, and from about 10 to about 50% by weight of a humectant comprising a polyhydric alcohol or a nitrogen-containing cyclic compound.