Epson B 510DN - Manual (Page 48)

& See “Accessing the printer driver for Mac OS X” on page 17.
2. Select the printer you are using as the Format for setting.
3. Select the appropriate envelope size as the Paper Size setting. You can also define a custom
envelope size. For details, see the online help.
4. Select Landscape as the Orientation setting.
5. Click OK to close the Page Setup dialog.
6. Access the Print dialog.
& See “Accessing the printer driver for Mac OS X” on page 17.
B-310N/B-510DN User’s Guide
Basic Printing 48