Epson B 510DN - Manual (Page 43)

7. Select Print Settings from the pop-up menu.
8. Make the settings that you want to use to print. See online help for details of Print Settings.
& See “Selecting the Correct Paper Type” on page 34.
9. Click Print to start printing.
Printing on Envelopes
B-310N/B-510DN User’s Guide
Basic Printing 43