Load envelopes in the paper tray.
For details about how to load envelopes, see Recommended Paper Sizes and Types.
Press [Home] () at the bottom of the screen in the center.
Flick the screen to the left, and then press the [User Tools] icon ().
Press [Tray Paper Settings].
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 [User Tools] () on the top right of the screen.
Press [Home] () at the bottom of the screen in the center.