I have a relatively new Canon Imageclass mf424dw printer that has just started to smudge the paper when I print. It does it on regular paper and on cardstock, both through the multi-purpose tray and the drawer. I ran the "Clean Fixing Assembly" and "Clean Feeder" functions, but it is still doing it. I am using the cartridge that came with the printer.
Since Canon (frustratingly) only offers telephone support for printers (and only on weekdays), I would really appreciate it if anyone has any advice. This shouldn't be a problem with a new printer. I'm halfway tempted to return it, but would rather just get it working.