980Y-059
Scrape-Like Marks Appear Due to Uneven Density
The speed of long sheet conveyance is not suitable. Check the solutions below.
← Feeding Direction
Remedy
To improve this situation, adjust each value of the following four items under [Adjust Paper Conveyance] toward the plus end equally.
<Convey. Area Before Fix.>
<Fixing Area>
<Cooling Area>
<Inversion/Output Area>
IMPORTANT
This function may affect how paper is fed. Since increasing the value to a great extent may cause paper jams, we recommend adjusting the values in small increments.
Press 
→ [Preferences] → [Paper Settings] → [Paper Type Management Settings] → select the type of paper you are using that is having this problem → press [Details/Edit] → [Change] for the four items for [Adjust Paper Conveyance] that need adjustment toward the plus end equally.
→ [Preferences] → [Paper Settings] → [Paper Type Management Settings] → select the type of paper you are using that is having this problem → press [Details/Edit] → [Change] for the four items for [Adjust Paper Conveyance] that need adjustment toward the plus end equally.
"Paper Type Management Settings" > "Paper Conveyance Adjustment" in the User's Guide