Genuine OEM Canon imageRUNNER Advance C7565i III Toners
The C7565i III can continue a black-and-white job after a GPR-56 color cartridge runs out, as long as black toner remains. Canon warns that print quality will drop. Keeping up with the empty color still matters, even when you are printing only black-and-white pages.
Find genuine Canon GPR-56 toner at Toner Buzz, with black and each color sold individually. The GPR-56 set combines black, cyan, magenta, and yellow; individual cartridges let you order the needed color without buying the whole set.