Inkjet ink set with an over-print varnish composition

The inkjet ink set as defined in claim I wherein, in the liquid ink, the polyurethane binder is a polyurethane graph polyol dispersion.

An inkjet printing system comprising:

• a. an ink dispensing unit, for applying an ink composition on the substrate, comprising at least one ink chambers containing an ink composition comprising a pigment dispersion, a surfactant, a polyurethane binder, a co-solvent and a balance of water;
• and
• b. a varnish dispensing unit, for applying an over-print varnish composition over the ink composition, said over-print varnish composition comprising a latex polymer, a boron-containing compound and water.

A method for printing in an inkjet printing system, the method comprising:

• a. applying an ink composition, on a printable medium, comprising at least one ink chamber containing an ink composition comprising a pigment dispersion, a surfactant, a polyurethane binder, a co-solvent and a balance of water;
• b. drying the ink composition;
• c. and applying an over-print varnish composition, on the printable medium, over the ink composition, said over-print varnish composition comprising a latex polymer, a boron-containing compound and water.