| 摘要 |
A radiation curable inkjet ink set including at least a cyan radiation curable inkjet ink, a magenta radiation curable inkjet ink, a yellow radiation curable inkjet ink and a black radiation curable inkjet ink, wherein each of the cyan radiation curable inkjet ink, the magenta radiation curable inkjet ink, the yellow radiation curable inkjet ink and the black radiation curable inkjet ink is a radiation curable composition having a viscosity of no more than 50 mPa.s at 25°C and a shear rate of 90 s-1 contains: 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 the radiation curable composition; 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. |
