Load envelopes in the paper tray.
About how to load envelopes, see Paper Specifications and Adding Paper for details.
Press the [User Tools/Counter] key.
Press [System Settings].
Press the [Tray Paper Settings] tab.
Select the paper size setting of the paper tray in which the envelopes are loaded.
Select the envelope size, and then press [OK].
Press [Next].
Select the paper type setting of the paper tray in which the envelopes are loaded.
Press [Envelope] in the "Paper Type" area, and then select the appropriate item in the "Paper Thickness" area.
Press [OK].
Press the [User Tools/Counter] key.