Canon’s first consumer printer capable of printing directly on CDs was released in 2003. Unfortunately for anyone in the US, this feature wasn’t included. Canon just put a plate over the CD tray slot. A community has sprung up to assist people in activating this feature. You need to remove the cover first. Then you can install the CD tray which you either purchased or constructed following their plans. The final step is to set a registry key so that the CD printing menu appears.