Xerox Black Toner Cartridges for 5945 55 (2-pack) (006R01605)
Canon 0481C003 (GPR-55) Black Toner Cartridge, Genuine (G3591)
Amazon.com: Genuine Canon GPR-55 Black Cyan Magenta Yellow Toner Set for use in The Canon imageRUNNER Advance C5535i / C5540i / C5550i and C5560i : Office Products