Screen-printing is a well-established technique valued for its ability to process diverse inks, including highly particle-loaded formulations essential several applications in the industrial and graphical industry. However, its reliance on manual labor and limited automation constrains broader adoption. Inkjet printing on the other hand offers on-demand flexibility and scalability but is restricted by its material requirements. Particularly viscosity limitations of around 25 mPa∙s in conventional piezo printheads. Recent advances by Quantica GmbH have introduced a novel printhead technology capable of jetting fluids up to 250 mPa∙s, potentially expanding the range of printable materials. This study investigates the feasibility of adapting highly particle loaded screen-printing inks for use in such high-viscosity inkjet systems. By diluting screen-printing inks with solvents to reduce viscosity, the impact on particle stability, rheological behavior, surface tension, drying dynamics is systematically evaluated. The overall goal is to assess whether particle-rich inks traditionally used in screen-printing can be effectively processed via piezo inkjet technology.