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Diane LittleJul 26, 2025
Why does my Samsung SCX-4200 All in One Printer print vertical black lines?
- EErin Hernandez MDJul 26, 2025
Vertical black lines on your Samsung All in One Printer prints may appear due to a damaged developer roller or a deformed Doctor-blade inside the toner cartridge. Another cause can be a scratched surface of the charge roller in the toner cartridge. To solve this, replace the toner cartridge and test the printer again.