HEWLETT-PACKARD Black Ink Cartridge Black ink cartridge for all Hewlett Packard 600 Series DeskJet/DeskWriter, except for DesignJet 650C (see HP 51640A for black cartridge) Averages 650 pages per cartridge 720-page yield, 40 ml ink volume Water-resistant, pigment based ink Ideal for HP specialty papers, transparencies, and plain papers