Built with large format DesignJet printers in mind, the genuine HP 70 range deals effortlessly with your prints, giving the highest quality results available. Thanks to the manufacturers many years of experience, each HP C9450A grey cartridge offers unrivalled print quality, precision and reliability.This original Hewlett Packard C9450A, is filled with 130ml of grey ink, allowing for an extended amount of happy printing. Compatible with the Z3100 you will find the HP 70 C9450A ink cartridge to be a worthwhile purchase, that allows you to get most from your printer.