An inkjet printing method including the steps of: jetting ink dots on a substrate of a plurality of radiation curable inkjet inks having a viscosity of no more than 50 mPa.s at 25°C and a shear rate of 90 s -1 that are part of a radiation curable inkjet ink set, the plurality of radiation curable inkjet inks each comprising: a) at least one non-polymerizable, non-polymeric bisacylphosphine oxide present in a concentration of no more than 4.0 wt% based on the total weight of radiation curable inkjet ink; b) at least one monomer comprising at least one vinyl ether group and at least one polymerizable group selected from the group consisting of an acrylate group and a methacrylate group; and c) at least one polymerizable or polymeric thioxanthone, with the proviso that if the at least one polymerizable or polymeric thioxanthone contains no tertiary amine group that the radiation curable composition further includes at least one tertiary amine co-initiator selected from the group consisting of ethylhexyl-4-dimethylaminobenzoate, a polymerizable co-initiator containing a tertiary amine and a polymeric co-initiator containing a tertiary amine; and curing the jetted ink dots using curing means consisting of one or more UV LEDs. jetting ink dots on a substrate of a plurality of radiation curable inkjet inks having a viscosity of no more than 50 mPa.s at 25°C and a shear rate of 90 s -1 that are part of a radiation curable inkjet ink set, the plurality of radiation curable inkjet inks each comprising: a) at least one non-polymerizable, non-polymeric bisacylphosphine oxide present in a concentration of no more than 4.0 wt% based on the total weight of radiation curable inkjet ink; b) at least one monomer comprising at least one vinyl ether group and at least one polymerizable group selected from the group consisting of an acrylate group and a methacrylate group; and c) at least one polymerizable or polymeric thioxanthone, with the proviso that if the at least one polymerizable or polymeric thioxanthone contains no tertiary amine group that the radiation curable composition further includes at least one tertiary amine co-initiator selected from the group consisting of ethylhexyl-4-dimethylaminobenzoate, a polymerizable co-initiator containing a tertiary amine and a polymeric co-initiator containing a tertiary amine; and a) at least one non-polymerizable, non-polymeric bisacylphosphine oxide present in a concentration of no more than 4.0 wt% based on the total weight of radiation curable inkjet ink; b) at least one monomer comprising at least one vinyl ether group and at least one polymerizable group selected from the group consisting of an acrylate group and a methacrylate group; and c) at least one polymerizable or polymeric thioxanthone, with the proviso that if the at least one polymerizable or polymeric thioxanthone contains no tertiary amine group that the radiation curable composition further includes at least one tertiary amine co-initiator selected from the group consisting of ethylhexyl-4-dimethylaminobenzoate, a polymerizable co-initiator containing a tertiary amine and a polymeric co-initiator containing a tertiary amine; and curing the jetted ink dots using curing means consisting of one or more UV LEDs.