HP 56 cartridges provide laser-quality text and sharp images. Get consistent, reliable performance every time you print. Patented pigment ink ensures consistent results for a variety of prints. The proprietary pigment ink formulation and advanced technology in the HP 56 ink cartridge have been designed in conjunction with the printer to consistently deliver crisp black text. definition and resistance to fading at all times.HP 56 ink cartridges deliver reliable performance and results. Combines with the printer to achieve high-quality, reliable performance and results with HP Plain Paper and Specialty PapersWith advanced print cartridge technology [1]. it's easy to achieve great results every time from your HP printer. The HP 56 Black Ink Cartridge is easy to install and easy to use. An on-screen gauge monitors ink levels to replace cartridges on time.