The present invention provides a printing method for printing radiation-curable ink jet ink printing comprising a clear coat primer composition comprising: a low surface tension monofunctional alkyl acrylate monomer with a surface tension in the range of 23 to 31 dynes/cm in which the alkyl group has at least 8 carbon atoms; a photoinitiator; an other UV curable monomers and oligomers. The clear coat primer composition is applied first onto a substrate and cured with actinic radiation or cationic curable ink jet ink is printed on the surface of the clear coat primer coating.