Patent ID: 6350028
Filing Date: 2002-02-26
Classification: C09D

Abstract:
An ink jet printing method, comprising the steps of:A) providing an ink jet printer that is responsive to digital data signals; B) loading said printer with ink-receptive substrates; C) loading said printer with 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 pigment, from about 0.05 to about 2% by weight of a compound which is sodium p-toluenesulfonate, disodium 2,5-dihydroxybenzene-disulfonate monohydrate, sodium p-hydroxybenzene-sulfonate or sodium p-aminobenzenedisulfonate, and from about 10 to about 50% by weight of a humectant comprising a polyhydric alcohol; and D) printing on an ink-receptive substrate using said ink jet ink in response to said digital data signals.