Canon imagePROGRAF PRO-300 13" Photographic Inkjet Printer - Manual (Page 132)

Paper Settings on the Printer Driver and the Printer (Media Type) (Windows)
Paper Settings on the Printer Driver and the Printer (Media Type) (macOS)
Paper Settings on the Printer Driver and the Printer (Paper Size) (Windows)
Paper Settings on the Printer Driver and the Printer (Paper Size) (macOS)
When the paper settings specified when printing differ from the paper
information registered in the printer:
Ex:
• Paper settings specified on the printer driver when printing: A5
• Paper information for the top feed registered in the printer: A4
When you start printing, a message is displayed.
When you press the printer's OK button, the paper settings specified when printing are displayed on the
LCD.
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