General description Make the most of your Lexmark printer with this original high capacity black toner cartridge. The Unison® Toner formulation delivers consistent quality and ensures reliability with the shake-free system. Keep costs low and quality high with Genuine Lexmark cartridges. The Lexmark Return Programme cartridges are patented print cartridges sold at a discount to be used only once and returned to Lexmark for remanufacturing or recycling. These patented cartridges are licensed for single use only and will stop working after delivering a fixed amount of toner. This cartridge is capable of printing up to 25,000 pages.