Description Works with Lexmark Printers: Z1400 series, X3500 series, X4550 series This high-resolution Lexmark 23 black cartridge uses Lexmark’s exclusive pigmented black ink. This ink coupled with an increased number of printhead nozzles and swath size, enables consumers to consistently produce high-quality prints at unprecedented print speeds. The 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. Part number : 18C1523E
