Combining a high page yield and a genuinely fair price, the Canon 8524B002 (and the whole C-EXV49 range) make the printers they are compatible in, all the more recommendable. The low cost per page of the original Canon 8524B002, combined with the high quality of the results is astounding. You can use the Canon 8524B002 black toner cartridge in the IR-C3320 and several other great four colour laser printers. It is incredibly unlikely that you will need to use it, but the genuine Canon C-EXV49 black toner cartridge comes fully guaranteed by the manufacturer themselves.