The HP 728 DesignJet Ink series is engineered specifically for large-format printing on the HP DesignJet T730 Printer and the HP DesignJet T830 Multifunction Printer (MFP). This series utilizes a dual-ink technology, combining permanent, water-resistant pigment-based ink for the Matte Black line work with high-brilliance dye-based ink for the Cyan, Magenta, and Yellow colors.