A bottle of Windex and a damp cloth may help remove dark, streaking lines on copies. But if it's from printing, we recommend you call your local service technician.
Have copier/multi-function printer that prints dark, streaking lines, or produces copies that are dark or gray-colored? It’s not only frustrating when you’ve got an important job to get out; it’s an extremely common issue.
As a Service Manager, when I receive a call like this, I typically ask three standard questions.
If it’s when you are making a copy from the glass, you can use Windex or a damp cloth to wipe the large portion of the copy glass. This could clean off ink or pen residue left from the document you were making a copy with.
If you’re making copies using the document feeder on top of the machine, use Windex or a damp cloth to wipe down the slit glass – the narrow stretch of glass on the far left end of the machine.
If the dark streaking lines are occurring when you’re printing to your device, we recommend you call a technician.
While the Internet may suggest wiping down the transfer rollers (or other parts) j inside the machine, we do not advise this. First, it could end up causing more damage and create a costly repair. Secondly, dark streaking lines could be from any number of part-related issues, including a fuser, an image transfer belt, an electrostatic belt, a drum, developer, or more.
Damage to any of these parts, again, can be a costly fix.
Your trusted service technician will be able to properly diagnose the issue and get you back to printing and copying clean, clear documents.
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