Xerox : Working With : Paper and Media : Supported Paper : General Paper Loading Guidelines
General Paper Loading Guidelines
Do not overfill the paper trays. Do not load paper above the maximum fill line in the tray.
Adjust the paper guides to fit the paper size.
Fan paper before loading it in the paper tray.
If excessive jams occur, use paper or other approved media from a new package.
Do not print on label media once a label has been removed from a sheet.
Use only paper envelopes. Print envelopes 1-sided only.