The high resolution Lexmark 23 Return Program Black Inkjet Cartridge uses Lexmark's exclusive pigmented black ink to deliver results that are sharp and defined. This ink, coupled with an increased number of printhead nozzles and swath size, enables consumers to consistently produce high-qualityprints at unprecedented print speeds. Nozzles are laid out in pairs, so if one becomes clogged or fails, the other continues to print. You can print all your important documents with confidence. This practical, affordable cartridge yields up to 200 pages at 5% coverage for long lasting reliability.