Radiation curable inkjet inks

A radiation curable inkjet ink comprising a polymerizable compound, a phenolic resin, and a thermal cross-linking agent, characterized in that the phenolic resin includes at least one structural moiety of Formula I,

• wherein
• L represents a divalent linking group having no more than 10 carbon atoms;
• n represents 0 or 1;
• R1 and R2 each independently represent a group selected from hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted alkaryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted (hetero) aryl group, and a substituted or unsubstituted alkoxy group, and
• wherein the thermal cross-linking agent comprises (a) an isocyanate compound or (b) a combination of an isocyanate compound and a triazine compound.