Advanced large-format printhead technology, ink cartridge technology and proprietary ink formulations ensure consistent print quality. HP-engineered to work as a modular ink system with HP 81 Dye Ink Cartridges. Built-in smart chips monitor printhead operation and alert you when it is time to replace. Genuine HP-engineered ink supplies. HP Designjet Printers 5000 42-in, 5000 60-in, 5000ps 42-in, 5000ps 60-in, 5500 42-in, 5500 60-in, 5500ps 42-in, 5500ps 60-in