If an image covering a wide area is continuously printed, the toner stains the fusing belt.
This problem occurs because the glossy ghosting at the leading edge margin remaining on the fusing belt.
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", Paper Settings.
If the glossy ghosting of the previous image pattern occurs, see Uneven Gloss.