Canon 3747B003 User Manual page 78

Slide the Paper Guides (A) to align them with both sides of the paper stack.
(4)
Do not slide the Paper Guides too hard. The paper may not be fed properly.
Note
Do not load sheets of paper higher than the Load Limit Mark (D).
Note
After loading paper
When using the machine to copy or print without a computer, select the size and type of the
loaded paper for Page size and Media type of the settings screen in each mode.
See Changing the Settings in "Printing Photos Saved on the Memory Card / USB Flash Drive" or