When using large-size or coated and paper-to-paper friction is very high, a sheet may push against another or paper deflection may occur.
This is likely to occur if:
B4, 8" × 14", or larger size of paper is used.
Paper that produces high paper-to-paper friction is used.
The temperature or humidity is high.
Sheet bending
The leading edge of the delivered sheet bends upward and backward.
One sheet pushing out another
Because of high paper friction, the delivered sheet may get stuck and push out other sheets of paper.
Paper deflection
Because of high paper friction, the delivered sheet may arch up and become crimped.