Electron beam curing of water based inkjet inks

An ebeam-cured process for inkjet printing on a substrate comprising the acts of:

• a. Providing a substrate;
• b. Providing an ebeam curable ink that is free of a photoinitiator, and comprising an acrylate functional polyurethane dispersion in water, a 3 to 15 mole ethoxylated trimethylol propane triacrylate, and one or more colorants, with water comprising from 30 to 80% of the ink;
• c. Providing an inkjet printing head;
• d. Applying the ebeam curable ink to the moving substrate through one or more inkjet printing heads;
• e. Moving the substrate through an ebeam reaction chamber, wherein the ebeam reaction chamber comprises one or more chill rolls;
• f. Contacting the substrate with the one or more chill rolls while the substrate is moving through an ebeam reaction chamber;
• and
• g. Curing the ebeam curable ink in the ebeam reaction chamber while the moving substrate is contacted with the one or more chill rolls.