All of Toner Refill Store's premium compatible Canon E20 and E40 toner cartridges contain brand new parts and are 100% guaranteed to meet or exceed your expections and surpass the print quality of the OEM (Original Equipment Manufacturer) Canon FC-120. Our Canon FC-120 E40 toner cartridges are made from the highest quality materials and are manufactured in an ISO-9001 certified factory. Our Canon FC-120 high yield E40 laser toner cartridge have a 'One Year 100% Satisfaction Guarantee'. The use of our premium compatible laser toner cartridges for the Canon FC-120 does not void your printer's warranty.