Top Page > Troubleshooting: TCRU/ORU > Troubleshooting Image Quality Problems > Color Toner Spotting/Staining > Colored Streaks (3) > Cause:
If the toner contains small clumps, they disintegrate in the development unit, producing colored streaks.
This problem may occur if the machine is left unattended for a long period or the toner bottle is kept out of its moisture-proof bag for a long period.