A PPENDIXA.8Double side-seam construction has vertical seams at both endsof the envelope rather than diagonal seams. This style may bemore likely to wrinkle. Insure the seam extends all the way tothe corner of the envelope as illustrated below.Envelopes with DoubleSide SeamsEnvelopes with a peel-off adhesive strip or with more than oneflap that folds over must use adhesive compatible with the heatand pressure in the printer. The extra flaps and strips may causewrinkling, creasing, or even jams and may even damage thefuser.Envelopes withAdhesive Strips or FlapsThe following gives typical address margins for a commercial#10 or DL envelope.Envelope MarginsProper storage of envelopes helps contribute to print quality.Envelopes should be stored flat. If air is trapped in an envelope,creating an air bubble, then the envelope may wrinkle duringprinting. See “Printing on Envelopes” on page 4.7.Envelope StorageCorrectIncorrectMinimumType of AddressReturn addressDelivery addressMaximum15 mm (0.6 in.)15 mm (0.6 in.)89 mm (3.5 in.)51 mm (2 in.)Notes:• For best print quality, position margins no closer than 15 mm(0.6 in.) from the edges of the envelope.• Avoid printing over the area where the envelope’s seamsmeet.Paper Specifications