Influence of Coating Ink Setting Rate on Ink Transfer

Details:

Year: 2003
Pages: 16

Summary:

A recent ink transfer model (Xiang & Bousfield 2001 TAGA), that contains basic properties of ink and coating, was proposed to take into account of the effect of ink setting rate. In this work, three well characterized coated papers and two inks, with different internal resistances, are compared in terms of ink transfer. Papers are printed in the first nip and sent through second nip on a lab press. Ink transfer in the initial nip and the ink remaining after second nip are determined for all three papers and two inks. Ink transfer in the initial nip is found to be controlled by the setting rate of the coating, the roughness of the coating surface and the setting rate of the ink: fast setting results in a higher ink transfer. Ink remaining after second is also determined by the setting rate of the coating or ink. Fast setting ink reduces the effect of coating setting rate. Fast setting coatings reduce the ink effect.