Canon MF419x User Manual page 661

● We recommend selecting <Speed Priority> if you do not need to consider which side to print on.
<Print Side Priority>
To print on a specific side of paper, you do not need to flip over paper in the paper source whether 1- or 2-
sided printing is selected.
● If <Print Side Priority> is set for a paper source that is loaded with paper you cannot use for 2-sided printing
( Paper(P. 858) ), <Speed Priority> is applied to the paper source instead. In this case, you need to load the
paper in the same way as when <Speed Priority> is selected (
● 1-sided printing speed may be slower when <Print Side Priority> is selected.
Setting Menu List
Loading Preprinted Paper(P. 63) ).
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