Canon PIXMA MG2525 All-in-One Inkjet Printer (Black) - Manual (Page 46)

(1) Open the paper support.
(2) Pull out the paper output tray and the output tray extension.
(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.
The folded flap of the envelope will be faced up on the left side.
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.
(B) Rear side
(C) Address side
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