Toner cartridge with new MICR toner is designed for use with Lexmark MS821, MS822, MS725, MS823, MS824, MS825, MS826, MX721, MX722, MX725, MX822, MX824 and MX826. Cartridge contains magnetic image character-recognition ink for security purposes in printing checks. It must be used with the MICRIMA821 imaging unit. Cartridge yields approximately 7,500 pages.