Scanned Image Quality Problems - Epson WF-4820 Series User Manual

Line of Dots Appears in All Scanned Images
Straight Lines in an Image Appear Crooked
Characters are Not Recognized During Conversion to Editable Text (OCR)
Scanned Characters are Blurry
Image Colors are Patchy at the Edges
Ripple Patterns Appear in an Image
Streaks Appear in All Scanned Images
Scanned Image Edges are Cropped
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Scanned Image Quality Problems

If you encounter quality problems with your scanned image, try these solutions:
Image is Distorted or Blurry
• Make sure your original is not wrinkled or warped. This may prevent the original from laying flat on the
scanner glass.
• Do not move your original or your product during scanning.
• Clean the scanner glass and the ADF and remove and dirt or dust on your originals.
• Do not press on the document cover or the original with too much force.
• Your product will not operate properly while tilted at an angle. Place your product on a flat, stable
surface that extends beyond its base in all directions.
• Adjust these Epson Scan 2 or Epson ScanSmart settings (if available) and try scanning again:
• Make sure you select the correct Image Type for your original.
• Increase the Resolution setting.
• If the Image Type setting is Black & White, adjust the Threshold setting. (The Image Option must
be set to None or Color Enhance.)
• If the Image Type setting is Color or Grayscale, select the Unsharp Mask setting.
• If the Image Type setting is Black & White, select Text Enhancement. If the Image Type setting is
Color or Grayscale, change the Text Enhancement setting to High.
Image is Too Dark
• Make sure you select the correct Image Type for your original.
Solving Problems
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