HP C5068A No 81 Ink Cartridge Dye 3-Ink Multi-pack magenta to fit Designjet 5000/5000PS/Designjet 5500/5500PS. Page life - 1000. This magenta cartridge is one of six in your printer. Genuine HP ink ensures smooth colour transitions and, when used with HP paper, instant drying for immediate lamination. Each cartridge in this pack of three is packed with enough magenta dye-based ink to print up to 1,000 pages.