What causes vertical lines on Oki Printer pages?
- Bbrandon09Aug 15, 2025
If vertical lines are appearing on your Oki Printer's output, it could be due to a damaged image drum cartridge. In this case, replace the image drum cartridge. Another possible cause is low toner. Try opening the top cover and tapping the cartridge a few times to evenly distribute the remaining toner. If the lines persist, replace the toner cartridge.