HP 746 - 300 ml - magenta - original - DesignJet - ink cartridge - for DesignJet HD Pro MFP, Z6, Z6dr, Z9+, Z9+dr. See high-contrast color with chromatic HP Vivid Photo Inks and high-definition HP printheads. Water- and fade-resistant prints last over 200 years in dark storage. Achieve more quality with fewer inks to help lower your printing costs.