localhost:631
in a browser will connect to you CUPS system. Printers, Modify Printer...on your way.
There may be a better driver for your printer than the one you are using too. Go to linuxprinting.org, search for your printer and it will tell you the best one. For example, hpijs is the HP version of the driver for my printer, howewer GimpPrint-hpijs-en is a BETTER driver, and my photo quality is better in Linux than it ever was in Windows. (There are at least 12 drivers I can select that all work with my printer) (I inherited my wife's old printer.) Like everything in Linux, there are many ways to skin a printer.
It may be that, with cannon, this is a 100% reverse engineered driver, because cannon has not been all that Linux friendly.
RO