Canon BJ-200e User Manual page 21

NOTE: Set the paper selection lever to the front position only when
loading envelopes or manually feeding paper. If it is set to the front
position when you are automatically feeding stacks of normal paper, the
printer may feed multiple sheets or jam.
3. Fan the paper before stacking it in the sheet feeder. Always fan a
stack of paper along the edge that will feed into the printer first.