How do I know which Canon toner cartridge to buy?

Toner cartridges are designed to be compatible with certain printers. Once you know the model number for your printer, you can easily find the right toner cartridge by looking at the product information on the packaging.

How many pages can I print with a cartridge?

Different Canon toner cartridges have different printing capacities. Look for the page yield on the product information so you know how much you'll be able to print with a particular cartridge.

Usually, I print only in black and white. Do I need a color cartridge?

If you ever use your color printer for color printing, you'll need a color toner cartridge. If you never use color or you only have a black-and-white printer, look for a toner cartridge containing only black ink.