How to fix black toner marks across the page on Brother All in One Printer?
- CCarolyn DeleonAug 27, 2025
Ensure you are using paper that meets our specifications. If using label sheets, glue may be stuck to the OPC drum; clean the drum unit. Avoid using paper with clips or staples. If the unpacked drum unit was exposed to direct light, it may be damaged. The toner cartridge or drum unit may also be damaged and need replacing.













