Fig. 6. Contour plots of printed dot area (in % of mean area per dot size) over dimensionless surface tension and viscosity. Each plot represents one of the papers from Table 2. The contour lines represent combinations of γ and η resulting in equivalent dot area. The almost horizontal lines illustrate a predominant impact of viscosity on the dot area. The surface tension effect plays a minor role except for the sized sheet (bottom, right), indicated by the changing slopes of the contour lines into a more vertical direction.