I have a Canon MF-4800 printer/scanner. It's been working fine up to last week. Now as you can see from the screen shots, it is mangling characters when printing. It scans ok, and prints test prints ok – also shown in another screenshot.
The machine is connected to my local network and is used by three Macs computers running slightly different versions of High Sierra.
I've tried:
Cleaning the printer,
Reconnecting the printer to my network,
Downloading new drivers
Any ideas would be welcome.
Best Answer
It seems there has been a change in Apple's handling of printers -- at least mine.
When I print using the latest beta, the characters are malformed. When I print using 10.13.2, the printing is perfect.