How to Install Canon GX5020/GX5040/GX5050 Printer on GNU/Linux Distros
GNU/Linux Canon MAXIFY GX5020/GX5040/GX5050 Printer Setup Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Canon MAXIFY GX5020/GX5040/GX5050 Printer in GNU/Linux Desktops.
And Canon GX5020/GX5040/GX5050 Printer Driver Installation is Quick and Easy involving just the execution of a few basic Shell Commands.
Especially relevant: after Installing the Driver to achieve the Setup follow instructions to Add Printer.