Patent ID: 6712892
Filing Date: 2004-03-30
Classification: C09D

Abstract:
An ink jet printing process, comprising the steps of:A) providing an ink jet printer that is responsive to digital data signals; B) loading said printer with ink jet recording elements comprising a support having thereon an image-receiving layer; C) loading said printer with an ink jet ink composition comprising water, humectant and a metallized, phthalocyanine colorant, said metallized, phthalocyanine colorant comprising the formula: MPc(SO3X)a(SO2NRRâ€²)b â€ƒwherein: M represents a metal; Pc represents a phthalocyanine nucleus; each X independently represents hydrogen, alkali metal or an organic cation; a is from 0 to 3; b is from 1 to 4; each R independently represents a substituted or unsubstituted alkyl group having from 1 to about 15 carbon atoms, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; and each Râ€² independently represents R or hydrogen; with the proviso that a+b is an average of from 2 to 4; and with the further proviso that at least about 70 wt. % of said metallized, phthalocyanine colorant is present in said composition as particles; and D) printing on said image-receiving layer using said ink jet ink in response to said digital data signals.