Advanced Guide TroubleshootingContents > Loading Paper / Originals > Loading Paper > Loading EnvelopesLoading EnvelopesYou can print on European DL and US Comm. Env. #10-sized envelopes.The address is automatically rotated and printed according to the envelope's direction by specifying withthe printer driver properly.ImportantYou can only print on envelopes with the computer.You cannot use the following envelopes.- Envelopes with an embossed or treated surface- Envelopes with a double flap (or sticker flaps)- Envelopes whose gummed flaps are already moistened and adhesiveNoteIn Windows, the message on how to load envelopes will appear when printing on them.This message will not appear next time if you select the Do not show this message again. checkbox.1. Prepare envelopes.Press down on all four corners and edges of the envelopes to flatten them.If the envelopes are curled, hold the opposite corners and gently twist them in theopposite direction.If the corner of the envelope flap is folded, flatten it.Use a pen to press the leading edge in the inserting direction flat and sharpen thecrease.The figure above show a side view of the leading edge of the envelope.ImportantThe envelopes may jam in the machine if they are not flat or the edges are not aligned. Makesure that no curl or puff exceeds 0.1 inches / 3 mm.2. Load envelopes.(1) Open the Paper Support.Do not open the support as an extension.Page 94 of 853 pagesLoading Envelopes