All of Toner Refill Store's premium compatible Canon 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 Fax L100. Our Canon Fax L100 toner cartridges are made from the highest quality materials. Our Canon Fax L100 high yield laser toner cartridge have a 'One Year 100% Satisfaction Guarantee'. The use of our premium compatible laser toner cartridges for the Canon Fax L100 does not void your printer's warranty.