Black line on scanned copy - Lexmark X4270 All-in-One Multifunction Printer, Copier, Scanner, Fax

hi, probably the black cartridge is defective

I had a professional to clean the scanner and copy machine. The line was gone. He had special tools to clean the machine parts.. Hope that helps.

Hello James,

Please click Vertical Bands Lines or Streaks in Copies Faxes or Scans to access the troubleshooting steps that should resolve the issue.

Check your flat bed and Document feeder scanning glass need to be clean, if any dot or dust in scanning glass of document feeder it will appear a line, check this points first
1- Check printouts from computer or FAX if it is clean problem in scanning section
2- Check using Copying a blank paper using only Flatbed if it prints without any line its problem from document feeder Scanning glass
So solution is clean the Document feeder scanning glass using wet cloth, note careful about wet cloth switch off the machine and clean it

Open flat bed, remove scan camera, clean internal reflector glasses with ear buds to clean dust on it, as well as clean flat bed glass with galss cleaner both sides fix it back, check copy & scan...

Documents scanned/copied from the document feeder pass over a thin glass area where scanning occurs. Clean this area if sent faxes, copies or scans have black or white vertical lines.

1. Lift the document cover to expose the platen glass.
   
   
2. Wipe the ADF scan area (C) with a clean, soft, lint-free cloth moistened with water.
   
   
   
   
3. Then wipe with a clean, soft, dry, lint-free cloth making sure there are no residues left, especially on the platen glass.
   
   
4. Close the document cover and make a copy of a text document to confirm the black line has disappeared.

Please perform Solution two: Clean the ADF rollers and separator pad, provided in the follwing HP web link:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00228023&cc=uk&lc=en&dlc=en&product=421991

:) Dr Tony

Have you tried cleaning the document feeders Scan Glass? (small glass under doc feeder ~ 1" by 9") Most times there is dirt spot on this glass, causing a shadow on scans and copies.
Try copying from the large glass by lifting doc feeder / platen cover and manually placing original. If no line copying or scanning manually from large glass, then small scan glass is deffenitely the culprit. Hope this helps.

HP Support may have a history of this problem w/this printer.

Open up the document feeder and clean the scanner glass