Arrange the stack of envelopes on a firm, clean 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. Also, press firmly on the area that corresponds to the edges of the back flap.
Remove any curling from the envelopes by holding the edges diagonally and bending them gently.
Run a pen or other rounded object along the back flaps to flatten them.
Remove the multi-purpose tray cover from the machine.
Insert the stack into the multi-purpose tray (1) (print side facing you), then adjust the paper guides to the width of the stack (2).
Replace the multi-purpose tray cover.
Be sure to replace this cover to prevent dust accumulating inside the machine.
Adjust the paper delivery selector (face-up delivery).
