Epson Stylus PHOTO 950 User Manual page 30

Select the appropriate envelope size from the available Paper
Size settings and select Landscape as the Orientation setting
from the Paper menu.
Select MicroWeave from the Advanced dialog box if
envelopes are not specified as the Paper Size setting in your
application when envelopes are printed.
A:
B-L:
B-R:
C:
:
21
Paper Handling
The minimum top margin is 3.0 mm (0.12").
The minimum left margin is 3.0 mm (0.12").
The minimum right margin is 3.0 mm (0.12").
The minimum bottom margin is 14 mm (0.55").
You can extend the minimum bottom margin to
3 mm by selecting Maximum as the Printable Area
setting on the printer software's Paper menu
(Windows) or in the Page Setup dialog box
(Macintosh). However, print quality may decline in
the expanded area.