The HP CB Clinic Team studied polyurethane (PU)-carbon black (CB) composites as new elastomer materials for Binary Ink Developers (BIDs) on HP Indigo printing presses. The investigation focused on how CB dispersion and loading affect the mechanical and electrical properties of the composites to meet HP’s product functionality and reliability requirements. Techniques such as tensile/tear, voltage-current sweeping, and SEM imaging analysis were used for material characterization.