Preparing to print
Raise the Out tray, and then remove all paper from the In tray.
Slide the paper guide all the way to the left.
Place the envelopes in the In tray, as far to the right as possible.
The side to be printed on should face down and the flap should be on the left.
Push the envelopes into the printer until they stop.
Slide the paper guide firmly against the edge of the envelope stack.
Lower the Out tray.