How to Install Canon GX3020/GX3040/GX3050 Printer on GNU/Linux Distros
GNU/Linux Canon MAXIFY GX3020/GX3040/GX3050 Printer Setup Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Canon MAXIFY GX3020/GX3040/GX3050 Printer in GNU/Linux Desktops.
And Canon GX3020/GX3040/GX3050 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.