In Inkjet printing technology, the tiny droplets of ink are directed onto a substrate to create the print output. Inkjet printing technique comes in two main forms; Continuous Inkjet (CIJ) and Drop-on-Demand (DOD). In Continuous Inkjet, ink is continuously expelled as dots, guided by a deflection system, to bombard the substrate on the required image areas. On the other hand, in the case of Drop-on-Demand (Piezoelectric) abbreviated as DoD-PIJ, ink is expelled from the ink reservoir on the required print areas as per droplet requirements, using a piezoelectric crystal. The main objective of this paper is to explore various factors contributing to optimum Solid Ink Density in CIJ and DoD-PIJ presses in relation to strength and surface properties of paper substrates.