5.Arrange the stack of envelopes on a firm surface and press down firmly on the edges to make the folds crisp. Press all the way around the envelopes to remove any curls and expel air from inside the envelopes.
6.Align the stack of envelopes with the right edge of the sheet feeder and slide in the stack until it stops.
7.Adjust the paper guide to the stack of envelopes, and adjust the paper exit support to match the width of the envelopes.
8. Start your print operation.