Canon imageCLASS MF4690 Operation Manual page 73

3
Slide the paper guides so that they fit to both sides of the paper.
If the paper guides are not adjusted correctly for the size of the paper, the quality of your printouts may
be adversely affected.
4
Specify the size and the type of the paper you load.
For details on how to specify the paper size and type, see "Setting Paper Size and Type, " on p. 2-15.
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