This high-resolution black cartridge uses Lexmark's exclusive pigmented black ink. This ink coupled with an increased number of print head nozzles and swath size, enables consumers to consistently produce high-quality prints at unprecedented print speeds. Print business quality text and graphic documents with high visual impact due to sharper black inks.¤¤This cartridge contains redundant nozzles, which help ensure consistent print quality. Nozzles are laid out in pairs, so if one becomes clogged or fails, the other continues to print.