Lexmark return program cartridge is print cartridges sold at a discount in exchange for the customer's agreement to the license requirement that the cartridges will be used only once and returned only to Lexmark for remanufacturing or recycling.Change cartridges less, save more per print, and reduce your environmental footprint. Outstanding results page after page, year after year. Superior Lexmark design means precision pairing between printer and cartridge for value, quality and environmental responsibility you can count on. Going green has never been easier. It's simple, smart and always free.