Designed from scratch by the manufacturer of your printer, there is no better choice for your Canon laser printer than the genuine C-EXV33 black toner cartridge. As an original Canon toner cartridge the 2785B002AA gives a quality of print unobtainable by any alternate products and is worth every penny.The running cost of all compatible Canon mono laser printers is mercifully low with the C-EXV33 thanks to the high 14,600 page yield of the black toner cartridge. You are guaranteed compatibility between the Canon 2785B002AA and any laser printer mentioned on this page (including the imageRUNNER IR2520), so you can rest assured with one of these units in hand.