Fax capabilities come cheaply in the MX420, but meager paper handling and costly black ink limit this model to low-volume use. The Canon Pixma MX420 lies in that tricky-to-shop-in, midpriced range ...

Your Canon fax/copy machine uses a powdered substance called toner to print text and images to a sheet of paper when you receive an incoming fax or copy a document. When the toner runs low you'll ...