Characteristics such as - color gamut - optical density - matching to OEM inks as closely as possible (where applicable) - drying time, - low odor, - scratch / abrasion resistance, - light fastness - minimal use of VOC’s - maximum print head life The inks are fine tuned through a process of iteration and repeated testing until the design criteria are balanced and optimized. Continuous Ink Delivery Systems [CIDS] are custom developed for each digital printer type. The design criteria for ink systems include - no permanent modification to the printer - ease of installation - minimizing possibility of operator error - robustness and durability