Hi cupcake_lady,
Canon has a few printers and multifunction units that use removable printheads. When using edible inks, it is recommended that you contact the company that sells the ink that you will be using. The printhead must be sanitized for food service use. That company would be selling the printhead as well as the ink, so if you contact them, they would be able to tell you what Canon printers that they sell printheads and ink for.
