Consistently outstanding image quality. Long - life system reliability. Superior sustainability. Essential to Lexmark print system performance, Unison Toner's unique formulation consistently delivers outstanding image quality, ensures long - life print system reliability and promotes superior sustainability - all in an innovative shake - free print system. Maximize your savings and enjoy premium quality with Genuine Lexmark cartridges. High Yield cartridges offer a lower cost per page and contain more Pages than Standard Yield cartridges do. Perfect for high volume printing.