Documents that have a tendency to be detected incorrectly may be scanned
Scanned images may be detected as images with remaining vertical streaks when you scan the following types of documents:
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Documents with edges that are dark in color
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Non-standard documents such as photographs or clippings from newspaper
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Documents with diagrams or tables that include vertical lines on the edges of the documents.
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Documents with gradations
Once you check images of documents that you scanned with the ScanSnap and make sure that there are no vertical streaks on the scanned images, use the scanned images as they are.
Are the rollers or glass inside the ScanSnap dirty?
Clean the inside of the ScanSnap.
For details about how to perform cleaning, refer to ScanSnap Help.