User`s guide

Because envelopes pass through heated rollers, the gummed area
on the flap may seal. Open the flap immediately after it passes
through the printer, before the seal cools. It can then be resealed
later in the normal manner. The use of envelopes with
emulsion-based glue avoids this problem.
Envelopes of the following size are recommended for both the
standard tray and optional cassette:
■ Com-10 (4 1/8" x 9 1/2")
■ Monarch (3 7/8" x 7 1/2")
■ International DL (110 mm x 220 mm)
■ C5 (162 mm x 229 mm)
Chapter 2
Printer Use 2-13