I understand when you scan to USB drive there are two or three verticle lines.
Don't worry I'd like to help you out.
Did you make any changes to your printer?
Does the issue persist when you make a copy from your printer?
Please provide the printer model to assist you better.
Try the steps recommended below.
Resetting the printer can force some types of scanners to calibrate which might fix the problem.
Remove any items from the scanner glass and automatic document feeder (ADF), then close the scanner lid.
With the printer turned on, disconnect the power cord from the printer and from the wall outlet or power strip.
Wait at least 60 seconds.
Plug the power cord back into a wall outlet.
HP recommends connecting the printer power cord directly to a wall outlet.
Reconnect the power cord to the printer.
Load the original document or photo, then try to scan.
Refer this article to further troubleshoot scan quality issues.
Hope to hear from you soon!
Have a great day ahead! 🙂
A4Apollo I am an HP Employee
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