QMS Magicolor WX User Manual page 86

For letterhead or preprinted media load the top-end first. Make
sure the paper lies flat and does not exceed the upper-limit mark
on the cassette for paper or foil (transparencies).
Paper
Foil
4 Adjust the paper guides on each side and on the trailing
edge of the media so that they rest lightly against the media
without causing it to buckle.