8-12MaintenanceIMPORTANTAbout replacement toner cartridgeFor optimum print quality, replacement is recommended usinggenuine Canon toner cartridge.Model name Supported Canon genuine tonercartridgeMF4570dnMF4450 Canon Cartridge 128Shake the toner cartridge before settingIf toner is not distributed evenly, this may result in a deterioration inprint quality.Hold the toner cartridge properlyWhen handling the toner cartridge, hold them properly as shownin the figure. Do not place them vertically or upside-down.Do not touch the toner cartridge memory (A) or theelectrical contacts (B)This may result in damage to the cartridge.(A)(B)Do not open the drum protective shutter (A).Print quality may deteriorate if you touch or damage the druminside of the drum protective shutter (A). Do not touch or open thedrum protective shutter (A).(A)When pulling out the sealing tape• Do not pull the sealing tape diagonally or sideways. If the tapebreaks, this may become difficult to pull out completely.• Even if the sealing tape stops at midpoint, pull it out of the tonercartridge completely.• If any tape remains in the toner cartridge, this may result in poorprint quality.Disposing of the removed sealing tapeDispose of the sealing tape according to local regulations.Keep the protective bagKeep the protective bag for the toner cartridge. You will need themwhen you remove the toner cartridge for machine maintenance orother purposes.Do not touch the high-voltage contacts (A)This may result in damage to the machine.(A)Do not leave the toner cover open for a long time withthe toner cartridge installed.This may result in a deterioration in print quality.NOTEAbout the packing materialsThe packing materials may be changed in form or placement, ormay be added or removed without notice.When the message appears whenreceiving a faxPrinting of the fax is interrupted and the received data will bestored in the memory.If is set toYou can keep printing fax documents or reports without replacinga toner cartridge. However, the printed documents may be lightor blurred because of lack of toner. The data is erased whenthe documents are printed out, so you cannot print the samedocuments again.“Continue Print. When Toner Is Nearly Out” (P.6-22)Collecting used toner cartridges“Recycling Used Cartridges” (P.8-13)Purchase ConsumablesPurchase at your local authorized Canon dealer.If you are not sure, contact the Canon help line.