HP C4871A No 80. Ink Cartridge 350ml black for Designjet 1000 series. Page life - 4400. Giving all of your documents a supreme level of quality, the HP No. 80 Black Inkjet Cartridge guarantees that your prints are eye-catching and professional. Working precisely without taking forever, the No. 80 cartridge is best suited to use in the home or in a small office. Producing a wide range of different shades and hues, even images can be printed without any deterioration in the level of quality, ensuring the best results.