Your printer and printer drivers support envelope printing. Ensure that envelopes are loaded in the printer before printing.
When envelopes are fed into the printer using a Long-Edge Feed, the print image is automatically rotated 180 degrees to ensure proper orientation on the envelope.
To print envelopes:
Open the driver from your application's Print dialog Properties.
On the Paper/Output tab, choose Select Paper.
From the Type selection, choose Envelope.
Click OK to close the driver and click Print.