Single pass printing of white on corrugated board

A method for single pass printing a white ink on an absorbent non-white paper substrate, comprising:

• applying a water-based primer composition to one or more selected surfaces of an absorbent non-white paper substrate to form a primer layer to seal the selected surfaces of the paper substrate against absorption before printing with a white ink,
• drying the primer layer,
• single pass printing the white ink on the primer layer only so that the white ink is only on the sealed surface of the substrate and remains white, and
• drying or curing the white ink;
• wherein said white ink is a low odor radiation curable composition comprising:
• 10-40% w/w of 4-hydroxybutyl acrylate, 0.5-10% of a urethane (meth)acrylate oligomer, 10-55% of diacrylates, one or more photoinitiators, one or more additives, and a white pigment;
• and the white composition contains less than 1% of a monofunctional momoner that has an undesired odor selected from the group consisting of:
• vinyl caprolactam, 2-phenoxyethyl acrylate, isodecyl acrylate, 3,3,5-trimethylcyclohexyl acrylate, isooctyl acrylate, octyldecyl acrylate, isobornyl acrylate, cycloaliphatic acrylate monomer, benzyl acrylate, di(ethylene glycol) 2-ethylhexyl acrylate, tridecyl acrylate, 2(2-ethoxyethoxy) ethyl acrylate, lauryl acrylate, and tetrahydrofurfuryl acrylate.