Top Page > Troubleshooting: TCRU/ORU > Troubleshooting Paper Delivery Problems > Paper Feed Problems Affecting Image Quality > The Leading/Trailing Edge Margin Is Long > Cause:
In some custom paper presets, the leading/trailing edge margins are wide enough to prevent paper jams.
![Illustration of edge margin](../image/cez586.gif)
![Note](../../web/gen/en-i_not.gif)
To adjust the following settings, pre-register the type of paper in use as a custom paper. For details about registering custom papers, see "Registering a Custom Paper", Preparation.