Patent ID: 8133551

Claim:
An inkjet printing method comprising the steps of: providing a first radiation curable composition curable by a first polymerization process selected from free radical polymerization and cationic polymerization; applying a layer of the first radiation curable composition on a substrate; curing the layer of the first radiation curable composition using the first polymerization process to form a cured layer; jetting onto the cured layer a second radiation curable composition curable by a second polymerization process which is different from the first polymerization process, the second polymerization process selected from free radical polymerization and cationic polymerization; and curing the jetted second radiation curable composition with the second polymerization process; wherein the first radiation curable composition includes a cationically polymerizable compound including at least one (meth)acrylate group, and the cationically polymerizable compound is present in the first radiation curable composition in an amount of at least 25 wt % based upon a total weight of the first radiation curable composition.