Ensure that your Canon printer is running at optimum capacity, with the genuine Canon 057 Black toner cartridge. This original cartridge boasts an impressive page yield of 3,100 and is compatible with the following i-SENSYS printers: LBP223dw, LBP226dw, LBP 228x, MF443dw, MF445dw, MF446x and MF449x; and is specifically designed to deliver high quality printing.