Printouts (envelopes) have creases.
Please do the following:
Open the face-up (back) output tray and push down the blue tabs at the left and right hand sides (as shown in the figure below). When you have finished printing your envelopes, close the face-up output tray to reset the two blue tabs back to their original position.
HL-5130, HL-5140, HL-5150D, HL-5170DN
If you need further assistance, please contact Brother customer service:
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