Cause

Paper size settings at printer driver and at printer do not match.
 

What to Do

Press the printer's ON/Stop button to cancel printing.

Check if the size of the paper loaded in the rear tray matches the paper size selected with the printer's Paper Select button.

After checking the paper settings set at the printer driver, retry printing.

 Note

• If the paper size set at the printer is larger than the paper size set at the printer driver, you can continue the printing without changing the paper size settings. Press the printer's RESUME button.
   

• See below for paper sizes that can be selected with the printer's Paper Select button.
   

  • Paper Settings

• You can disable the function for preventing a printer error. When this function is disabled, the printer uses the paper settings for printing onto the paper in the rear tray regardless of whether or not the paper matches these settings.

  See below for the printer error prevention setting.
   

  • Changing the Printer Operation Mode (Windows)
     
  • Changing the Printer Operation Mode (macOS)