Hi, Thanks for the response - I've done all these steps to the letter and still no joy.
My iMac can see the printer (Canon MG5250) to connect to it, selects it own drivers, everything looks OK, then when I try to print I get the following messages in the printer status box:
Ready to print
Printing - x pages (where x is the number)
Printing - Looking for printer
Printing - Copying print data
Printing - 1.70 is ready to print
Printing - Connecting to printer
Printing - The printer is unreachable at this time
Steps 1 - 6 take about 14 seconds, step 6-7 takes 74 seconds.
My iMac prior to the update to 11.2.2 was running 11.2.1 and I had printed something quite happily 2 days ago, and my MBP that is still running 11.2.1 still connects to the same printer without issue. This tells me that something has been changed / tweaked / or generally messed up in the rush to get 11.2.2 out. There have been no other changes to my iMac or Printer.
There are no updated drivers on Canon's own website for Big Sur as they no longer support it, but everything was working perfectly until the auto update went through, I've certainly turned off that option now. Sadly Apple tell me I can't roll back to 11.2.1, and Apple's tech support on this was basically denial.