Open the front cover until it clicks, and then slide out the paper cassette until it stops.
The paper cassette cannot be removed.
Slide the edge guides to their maximum position.
With the flap facing up, load envelopes until they touch the back of the paper cassette.
Do not load more than the maximum number of sheets specified for envelopes.
Slide the edge guides to the edges of the envelopes.
Insert the paper cassette as far as it will go.
Select the paper size and paper type.
Slide out the output tray.
