A3-size papers sheets (100% Eucalyptus globulus bleached kraftpulp with a 75 g/m2grammage and a 100lm average thickness,produced by AKD-based sizing system and filled with precipitatedcalcium carbonate) without any surface treatment, supplied by theGrupo Portucel-Soporcel, Portugal, were used as paper substratesbefore (control sheets CS) and after coating.