Canon 2921B002 On-Screen Manual page 73

Loading Envelopes
(B) Rear side
(C) Address side
Slide the Paper Guides (A) to open them, and load the envelopes in the center of
(1)
the Rear Tray WITH THE ADDRESS SIDE FACING YOU.
The folded flap of the envelope will be faced down on the left side.
Up to 10 envelopes can be loaded at once.
Slide the Paper Guides (A) to align them with both sides of the envelopes.
(2)
Do not slide the Paper Guides too hard. The envelopes may not be fed properly.
3.
Specify the settings in the printer driver.
Select Envelope in Media Type.
(1)
Select the size for envelopes.
(2)
Select DL Env. or Comm. Env. #10 in Page Size.
Select DL Envelope or #10 Envelope in Paper Size.
Select Landscape in Orientation.
(3)
Important
If you do not specify Page Size (or Paper Size) or Orientation properly, the address will be
printed upside down or will be turned to 90 degrees.
Note
For details on the printer driver settings, see
Documents (Macintosh)
In Windows, if the print result is upside down, select Rotate 180 degrees on the Page Setup
sheet in the printer properties dialog box of the printer driver.
Printing Documents (Windows)
.
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