How to Troubleshoot Lines in a Photo Scan
By ImgHeal · Updated
Determine whether streaks come from the scanner, the original print, or a single failed capture.
Identify where the problem begins
Scan a clean blank sheet or another safe document and compare the line position. A mark that stays in exactly the same scanner coordinate likely comes from the equipment or glass, while a mark that moves with the photo belongs to the source.
Create a safe diagnostic copy
Follow the scanner maker's cleaning instructions with the device off, or use another scanner. Do not scrub the photograph to remove a line that exists only in the scan.
Verify the corrected file
Rescan a small test and compare at 100 percent. Keep the first capture until the replacement is complete, and record which scan became the master.
Check before you finish
- Compare a second test scan.
- Follow device cleaning guidance.
- Do not clean the photo for a scanner defect.
Continue with a related guide
Try a restoration on a copy of your photo
Keep the original scan. Upload a separate digital copy, review ImgHeal’s generated result, and decide whether it suits your needs.
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