I know it looks like a "b" on the box, but the model of your printer is actually MF642Cdw .
What OS are you using with the printer?
What application(s) are you printing from?
What driver did you install?
Please use the link I provided above. Select MAC OS 12
Download the driver for for your printer.
Remove the device from Printer and Scanners
Restart your MAC
Run the installer and follow the prompts to install the printer and its supporting software.
My instructions were:
Download the driver
Remove the previous instance of the installed device
Reinstall the device.
Your post states you installed the new driver and restarted...???
I could not find the previous driver in the "application list". I downloaded a new driver as you suggested, then restarted a computer. Both multiple copy (after printing, "print queue" is still looking for a printer and continues printing) problem and missing the right end of document (regardless document margin setting) are persisting. Your help is greatly appreciated.