How to Install Canon iP4820/iP4840/iP4850 Printer on Gnu/Linux Distros
GNU/Linux Canon iP4820/iP4840/iP4850 Printer Setup – QuickStart Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Canon PIXMA iP4820/iP4840/iP4850 Printer in GNU/Linux Desktops.
And the Canon PIXMA iP4820/iP4840/iP4850 Printer Setup on Linux is granted by the GutenPrint Software because the Proprietary Driver is not available.
Possibly for more insight about How to Manage your Device see: Canon Printers Manuals Online.