Oki MPS6150c User Manual page 62

Envelopes
Load print side up (flap down) with top edge to the left
and short edge into the printer.
You cannot duplex envelopes.
4. Press the blue tray latch (1) toward the paper stack to
lift the paper platform into the feed position.
c53_86_mptraylevercolr.jpg
MPS6150c User's Guide
62