Essential to Lexmark print system performance. Consistently outstanding image quality. Long-life system reliability. Superior sustainability. Innovative shake-free print system. Features Unison toner, high yield, genuine Lexmark supplies are engineered to work best together with your Lexmark printer, delivering excellent print quality from the first page to the last. Lexmark Cartridge Collection Program, Lexmark Return Program Cartridges. Device Types: Laser Printer; Color(s): Black; Page-Yield: 20,000; Supply Type: Toner.