Method and printing machine for printing on a substrate by means of at least one ink jet printhead and a mixture of substances for the pretreatment of a substrate to be printed in an inkjet printing machine

摘要

The invention relates to a method and an apparatus for printing a substrate by means of at least one inkjet printhead of a printing unit, which downstream of a printing material in the Bedruckstoffweg is arranged as a first printing unit, and by which a printing unit supplied and / or feedable substrate by means of at least one inkjet printhead of the printing unit is printed on at least a first printing material side comprising a printing ink comprising a dispersing medium and dispersed in the dispersion medium ink particles or pigments. On the way to printing the first substrate side by the first printing unit of the substrate is applied by means of an applicator at least in a region of the surface of the first printing material to be printed with a mixture which a soluble in the dispersion of the ink polymer and / or copolymer and / or a in the dispersion medium of the ink comprises soluble salt. Furthermore, the invention relates to a mixture for such pretreatment.