Recently ran into a printer from Canon, model LBP6300dn which doesn't seem to be supported by either net-print/gutenprint or net-print/cndrvcups-lb Found some drivers from following Canon page in a package called as "CAPT Printer Driver for Linux Version 2.60" http://www.canon-europe.com/Support/Consumer_Products/products/printers/Laser/i-SENSYS_LBP6300dn.aspx?type=download&language=EN&os=Linux Installed extra packages: net-print/cndrvcups-lb-2.90 net-print/gutenprint-5.2.10 After more digging, it seems that some of the Canon printers use protocol called CAPT printer stream - https://help.ubuntu.com/community/CanonCaptDrv190 And also following ebuild: http://gpo.zugaina.org/net-print/cndrvcups-capt
*** This bug has been marked as a duplicate of bug 130612 ***