Top Page > Troubleshooting: TCRU/ORU > Troubleshooting Image Quality Problems > Toner Spotting/Staining > Streaks (4)
Irregular black streaks appear, running parallel to the feed direction.
This occurs on both sides regardless of whether printing one-sided or duplex.
![Illustration of streaks](../image/dth009.gif)
These are not toner streaks. You can remove them by rubbing them with an eraser or similar.