A number of things can cause the Canon Printer Not Printing problem. The first can be computer problems or a backlog of unnecessary print tasks. The printable DVD/CD, on the other hand, is not positioned correctly on the CD-R Tray. It's also conceivable that the device isn't connected correctly or isn't yet working. Alternatively, the problem with the printer's ink tank may be the reason. One explanation can be the printer driver does not have your machine chosen.