Patent ID: 6619797
Filing Date: 2003-09-16
Classification: B41M,Y10T

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 elements comprising a support having thereon an image-receiving layer comprising cationic core/shell particles wherein each said core/shell particle comprises a polymeric core and a shell containing at least one ethylenically unsaturated monomer containing a trialkylammonium salt; C) loading said printer with an ink jet ink composition comprising water, a humectant, and a water-soluble anionic dye; and D) printing on said image-receiving layer using said ink jet ink in response to said digital data signals, said shell having the formula: wherein:R represents H or an alkyl group of from 1 to about 4 carbon atoms; R1, R2 and R3 each independently represents an alkyl group of from 1 to about 20 carbon atoms; Z represents at least one ethylenically unsaturated, nonionic monomer; Y represents an ethylenically unsaturated monomer which is capable of forming a water-insoluble homopolymer; m represents a mole % of from about 5 to about 80; n+p represents a mole % of from 20 to about 95; and X represents an anion, said cationic core/shell particle having a particle size of greater than about 10 nm.