Average continuous page yield (black) in simplex mode up to 10,500 standard pages; declared value according to ISO/IEC 19798. Unison toner The unique composition of Unison toner delivers consistently high image quality, ensures longevity and reliability of the printing system and ensures unique sustainability - all in an innovative "shake-free" printing system - and is therefore essential to the performance of the Lexmark printing system. High capacity Maximize your savings and rely on the top quality of original toner cartridges from Lexmark. In contrast to standard capacity cartridges, high capacity cartridges are characterized by lower cost per page and a higher page yield. Perfect for use in high-volume environments. Optimal interaction Original Lexmark consumables are designed to work optimally with your Lexmark printer and deliver excellent print quality from the first to the last page. Lexmark print cartridge return program Environmentally conscious printing has never been easier. Recycle all your empty Lexmark supplies by letting us handle the details - easy, smart and free. Lexmark Return Program Cartridges The Lexmark Return Program Cartridges provides customers with patented cartridges at a special price when the purchaser agrees to use the cartridge purchased once and return it only to Lexmark for remanufacturing and/or recycling. Return Program Cartridges are licensed for one-time use only and cannot be used after a certain amount of toner has been returned. A variable amount of toner remains in the cartridge when it needs to be replaced.The cartridge is designed to automatically update the printer memory to provide protection against counterfeit and/or unauthorized third-party cartridges.