Ink jet printing method

Claim 1

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 an ink-receiving element comprising a support having thereon a continuous, coextensive, porous ink-receiving layer having interconnecting voids; C) loading said printer with an ink jet ink composition comprising water, a humectant, a pigment and particles of a water-dispersible polymer; and D) printing on said ink-receiving layer using said ink jet ink in response to said digital data signals, said water-dispersible polymer comprising a polyurethane, a polyacrylate or a polyester ionomer having the following general formula: wherein: A is the residue of one or more diol components which together comprise 100 mole % of recurring units and is represented by the following structure: —O—(CHR 2 CHR 3 O) m —R 1 —(OCHR 2 CHR 3 ) n —O— wherein: m and n independently represent an integer from 0-4; R 1 represents S, an alkylene group of 1 to 16 carbon atoms; a cycloalkylene group of 5 to 20 carbon atoms; a cyclobisalkylene group of 8 to 20 carbon atoms, a bi- or tri-cycloalkylene group of 7 to 16 carbon atoms, a bi- or tri-cyclobisalkylene group of 9 to 18 carbon atoms, an arenebisalkylene group of from 8 to 20 carbon atoms or an arylene group of 6 to 12 carbon atoms, a carbinol-terminated polydimethylsiloxane segment; and R 2 and R 3 each independently represents H, a substituted or unsubstituted alkyl group of 1 to 6 carbon atoms or a substituted or unsubstituted aryl group of 6 to 12 carbon atoms; B is the residue of a diacid component which comprises 8 to 50 mole % of recurring units and is represented by one or more of the following structures: wherein: M + represents an alkali metal; an ammonium group; a phosphonium group; a heteroaromatic ammonium group; a sulfonium group; a guanidinium group; or an amidinium group; and D is the residue of a diacid component which comprises 50 to 92 mole % of recurring units and is represented by one or more of the following structures: wherein p represents an integer from 2 to 12.