When you are ready to load envelopes, follow these steps:
1.Make sure the printer is turned on and
2.Turn on the envelope mode by pressing and holding the LF/FF button, and then pressing the ON LINE button. The beeper sounds once and the indicator light for the current print mode blinks quickly. Press ON LINE to set the printer back
3.Set the green paper thickness lever on the inside of the printer to the right.
4.Set the paper selection lever to the forward position, and move the paper guide to the left to match the width of the envelopes.