How to Remove Ink Cartridges from Canon Maxify MB2020, MB2320, MB5020, MB5320, iB4020

NOTE: This procedure is not endorsed by Canon. Use at your own risk, and only if necessary. Canon MAXIFY printers do not let you remove the ink cartridges until they have become empty. This method will allow you to remove the cartridges at any time, useful if you have a defective cartridge.