Canon IMAGECLASS MF3200 - Manual (Page 49)

3-5
Print Media
2
When setting a paper, insert the paper into the multi-purpose feeder with
the print side up.
NOTE
When you load paper with a logo on, position the paper with the print side up (logo side) and insert
it so that the top of the paper feeds first in the multi-purpose feeder.
When setting an envelope, insert the envelope into the multi-purpose
feeder with the print side up and the right edge (i.e., closer to the stamp)
first.