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This section describes loading envelopes.
Misfeeds might occur depending on the length and shape of the flaps.
Only envelopes that are at least 139.7 mm (5.5 inches) wide can be loaded.
To print on envelopes, load them into the Wide LCT or multi bypass tray (Tray A), and be sure to specify an appropriate paper type.
To load envelopes, be sure to unfold their flaps and set them in the 
orientation with print side face up.
If you are printing onto side-opening envelopes, be sure to unfold their flaps and set them in the 
orientation with print side face up. Flaps must be at the right side of the Wide LCT or multi bypass tray (Tray A).
Recommended envelopes
For information about recommended envelopes, contact your local dealer.
Storage of envelopes
Keep envelopes stored in sealed plastic bags and remove only the quantity needed. Do not add envelopes during printing, as this might cause misfeeds.
Loading envelopes on the two-tray wide LCT
If a paper jam occurs, load 5 more envelopes.
Keep the height difference between the bottom of the envelopes and flaps within 10 mm.
Be sure to specify the size of the envelope and flap size in [Tray Paper Settings]. For details, see Changing to a Custom Paper Size.
When using envelopes, set [Paper Weight] in [Tray Paper Settings] to the same value as two sheets of the paper used for the envelopes.
Before loading envelopes, press down on them to remove any air inside and to flatten any edges or creases. When envelopes are curled, flatten the envelopes so that the amount of curling is less than 5 mm (0.2 inches). If a paper jam, non-feeding or double-feeding occurs even after correcting the curl, load one envelope at one time.
Place one envelope at a time if you still get any of the following results:
The envelope jams
The envelope is not fed
Multiple envelopes are fed at the same time
Humidity levels of over 50% can cause envelopes to come out creased or misprinted.
Certain types of envelopes might come out creased, dirtied, or misprinted. If you are printing a solid color or image on an envelope, lines may appear where the overlapped edges of the envelope make it thicker.
If the horizontal size of the envelope is 297 mm (11.7 inches) or less, a paper misfeed might occur. If this happens, turn off Skew Detection. For details, see "0307 Detect/Control JAM097/098", Maintenance and Management.
When printing on envelopes thicker than 127.0 g/m2 (47.0 lb. Cover), do not use [П Curl Correction Level: Large] or [U Curl Correction Level: Large] for [0304 Correct Output Paper Curl] of [Adjustment Settings for Operators].
