Canon MG6400 series Online Manual page 39

Duplex Printing can be performed only when one of the following paper sizes is
selected from Page Size on the Page Setup tab.
• Letter 8.5"x11" 22x28cm, A4
After printing the front page, there is an ink drying wait time before starting to print the
back page (Operation stops temporarily). Do not touch the paper during this time. You
can change the ink drying wait time at Custom Settings on the Maintenance tab.
Note
If the back side of the paper becomes smudged during duplex printing, perform
Bottom Plate Cleaning in the Maintenance tab.
Related Topics
Cleaning Inside the Machine
Changing the Machine Operation Mode
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