INKJET INK COMPOSITION WITH JETTING AID

摘要

An inkjet ink composition comprising water, self-dispersing carbon black pigment particles, and a copolymer jetting aid; wherein the copolymer jetting aid comprises a copolymer obtained from polymerizing at least 5 weight percent of one or more monomers comprising a long hydrocarbon chain having greater than or equal to 12 carbons and from 5 to 30 weight percent of one or more acidic monomers. The inks of the present invention have improved stable drop velocities over extended droplet ejection events.