Oki C9600dn Reference Manual page 16

Paper (Media) Settings
by Media Type
Labels, Transparencies, Envelopes
Media
Labels
Transparencies
Envelopes
a. Media Weight = not applicable.
b. Face-Down = top exit tray (see page 28);
Face-Up = straight-through, side exit tray (see page 29)
c. N.A. = not applicable.
Media Size
Letter or A4
Letter or A4
COM-10 Envelope
a
Media Type
c
N.A.
Transparency
N.A.
15
Feed Tray
b
Exit Tray
MP Tray only
Face-Up only
Tray 1 or MP Tray
Face-Up only
MP Tray only
Face-Up only