Patent ID: 8092003

Claim:
A method of digitally printing an image onto a substrate comprising the steps of: supplying at least one digital ink and at least one catalyst to an inkjet head, and maintaining said ink and catalyst separate from each other inside said head; discharging an amount of said ink from said inkjet head toward said substrate; and discharging a quantity of catalyst from said inkjet head toward said substrate, said ink and said catalyst combining subsequent to being discharged from said inkjet head for curing of said ink on said substrate, said ink and said catalyst, when cured, forming an ink image on said substrate, said ink comprising between about 5-45% by weight of a cross-linkable acrylic resin, between about 3-40% by weight of a pigment, and between about 20-75% by weight water, said acrylic resin having a glass transition temperature of between about −40-0° C.