Lexmark B2236
Step 1
Use an envelope that has been stored in a dry environment.
Note: Printing on envelopes with high moisture content can seal the flaps.
Send the print job.
Does the envelope seal when printing?
Go to step 2.
The problem is solved.
Step 2
Make sure that paper type is set to Envelope.
From the control panel, navigate to:
> Paper > > Tray Configuration > > Paper Size/Type >
Contact customer support.
Paper Is Wrinkled When Printing in Humid Environments
Watermarks are not appearing when printing from Google Chrome and Microsoft Edge