Canon MX450 Series Online Manual page 704

Press the Setup button, select Device settings and Print settings in this order, and then set
Prevent double-feed to ON.
Changing the Machine Settings on the LCD
• To set by using your computer
Open the printer driver setup window, and in Custom Settings in the Maintenance sheet, select
the Prevent paper double-feed check box, and then click OK.
To open the printer driver setup window, see How to Open the Printer Driver Setup Window.
Note
Printing speed will be reduced if Prevent paper double-feed function is enabled.
• Check 7: Clean the paper feed roller.
Cleaning the Paper Feed Roller
Note
Cleaning the paper feed roller will wear the roller, so perform this procedure only when
necessary.