Possible Causes and Quick Solutions:
• Paper Quality:
• Issue:Rough or damp paper can cause uneven toner adhesion.
• Solution:Use high-quality,dry paper.
• Toner Cartridge or Developer Unit:
• Issue:Insufficient toner,uneven distribution,or a leaking cartridge.
• Solution:Shake the toner cartridge or replace it.Clean the developer unit.
• Internal Machine Dirt:
• Issue

irty photosensitive drum or paper path.
• Solution:Clean the drum and paper path gently with a soft cloth.
• Printing Settings:
• Issue:Incorrect settings for thick paper.
• Solution:Ensure the printer is set to“thick paper mode”and adjust the resolution.
• Static Electricity:
• Issue:Static on thick paper can cause toner issues.
• Solution

re-treat paper to reduce static.
Quick Cleaning Steps:
• Turn off the printer and unplug it.
• Open the maintenance panel and clean the photosensitive drum and paper path.
• Check and clean the developer unit.
• Test print after cleaning to see if the issue is resolved.
Start by cleaning the machine and checking the paper. If it persists, consider replacing the toner cartridge or contacting a technician.