Canon Community

For the past three days, all printed pages have had horrible streaking/smudges. I attempted to clean the fixing assembly several times, but this has had no effect at all. The toners are all at least at the 90% mark. See the attached photo of a printe...

On my MF644CDW with Mac Big Sur 11.0.1, I'm trying to print a document two-sided, and I see that Two-Sided printing is disabled.  This is with the latest driver V10.19.6 from the Canon web site. Interestingly, if I create another printer instance usi...