Epson ActionPrinter 4000 User Manual page 65

temperature (41°F to 95°F or 5°C to 35°C).
To make sure that the printing fits within the printable area, always
print a test sample using a normal sheet of paper before printing on
envelopes.
Printing on Special Paper
8.5 mm
(0.33") more
or
22 mm
(0.87") or more
is only available at normal
Paper Handling 2-27