Epson WorkForce Pro EC-4020 - Line of Dots Appears in All Scanned Images; Straight Lines in an Image Appear Crooked; Image Is Distorted or Blurry

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Related references
Additional Scanning Settings - Advanced Settings Tab
Line of Dots Appears in All Scanned Images
If a line of dots appears in all your scanned images, clean the scanner glass with a soft, dry, lint-free
cloth or use a small amount of glass cleaner on the cloth, if necessary. Paper towels are not
recommended.
Caution: Do not spray glass cleaner directly on the scanner glass.
Parent topic: Solving Scanned Image Quality Problems
Related tasks
Cleaning Your Product
Straight Lines in an Image Appear Crooked
If straight lines in an original appear crooked in a scanned image, make sure to place your original
straight when you scan it.
If you are scanning from the ADF, try cleaning the ADF and scan again.
Parent topic: Solving Scanned Image Quality Problems
Related topics
Placing Originals on the Product
Image is Distorted or Blurry
If a scanned image appears distorted or blurry, try these solutions:
• Do not move your original or your product during scanning.
• 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 settings (if available) and try scanning again:
• Increase the Resolution setting.
• If the Image Type setting is Black & White, adjust the Threshold setting.
• 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.