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Reply to Big Sur Print Goes Blank (Bug Detected)
I have the exact same problem but resolved the issue. I have Canon imageClASS MF276cdw printer. I did the following. On my Mac, choosed Apple menu  > System Preferences, then clicked Printers & Scanners. Pressed and held the Control key as I clicked in the list at the left, then chose “Reset printing system” from the menu that appeared. After I reset the printing system, the list of printers in Printers & Scanners preferences was empty. So, I Re-added the printer by pressed the "+" button on the bottom left panel and clicked the printer name. Then, I re-installed the printer driver by pressed the "add" button on the bottom. Make sure your see USE: "Secure AirPrint" rather than "Canon image Class 720".
Nov ’20