Canon PIXMA E474 - Manual (Page 30)

3. Slide the paper guide (A) to the left, and load the envelopes against the far right of the rear
tray WITH THE PRINT SIDE FACING YOU.
Fold flap of the envelope and load the envelope in the portrait orientation with the address side facing up.
Up to 5 envelopes can be loaded at once.
4. Slide the paper guide (A) to align it with the envelopes.
Do not slide the paper guide too hard against the envelopes. The envelopes may not be fed properly.
Note
• Do not load envelopes higher than the load limit mark (B).
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