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Paper Specifications 1-21
Envelopes with Double Side Seams
Some envelopes have vertical seams at both ends of the envelope,
rather than diagonal seams. This style of envelope may be more likely
to wrinkle. When using envelopes with double side seams, be sure
the seam extends all the way to the corner of the envelope as
illustrated below.
Figure 1-3 Envelopes with Double-Side-Seams
Envelopes with Adhesive Strips or Flaps
Envelopes with a peel-off adhesive strip or with more than one flap
that folds over to seal must use adhesives compatible with the heat
(400° F (205° C)) and pressure in the printer. The extra flaps and
strips might cause wrinkling, creasing, or jams.
Acceptable
Unacceptable