The Drop on Demand (DOD) large character ink jet system prints high quality dot-matrix characters on a variety of products at a cost-effective price. It also offers the lowest price per printed character in the industry today. Users can choose between two models: a water-based model for printing on porous surfaces like corrugated cartons, or as a solvent-based system for printing on non-porous product like plastics, stretch wraps, metals and more.