Abstract: This invention provides an inkjet ink comprising: an ?,?-unsaturated ether monomer in which the only radiation-curable functional groups present in the monomer are ?,?-unsaturated ether groups; a low-viscosity difunctional (meth)acrylate monomer in which the only radiation-curable functional groups present in the monomer are acrylate groups, wherein the low-viscosity difunctional (meth)acrylate monomer has a viscosity of 0.5 to 6.5 mPas at 25° C.; and a colouring agent; wherein the ink contains less than 5% by weight of water and volatile organic solvents in total, and less than 10% by weight of mono- and difunctional monomers in total, other than the ?,?-unsaturated ether monomer and the low-viscosity difunctional (meth)acrylate monomer, where the amounts by weight are based on the total weight of the ink, and wherein the ink has a viscosity of less than 30 mPas at 25° C.