HP 731 Design Jet Printhead The HP 731 Design Jet Printhead and Original HP Bright Office Inks are designed and tested together to produce bright colour and bold image quality for technical prints on plain papers. Key features Colour(s) of print cartridges: Cyan, magenta, yellow, grey, photo black, matte black (2 colours per printhead) Ink drop: 6 pl Compatible ink types: Dye-based (cyan, magenta, yellow, grey, photo black); pigment-based (matte black) Compatible Printers: HP Design Jet T1700 44-in (W6B55A#B1K) What s in the box Printhead