Hello. My name is ***** ***** I may be able to help you. According to the manual for your printer, you must select the paper size and type and select <Drawer 1> or <Drawer 2> (if your printer is equipped with two drawers). You have not mentioned this. Have you done this using the Select Paper>Settings menu on the printer control panel? Are there settings for envelopes? If not, you can set the size using a custom setting by setting the width <X> and length <Y> to inform the printer of the size of your envelopes.
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