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Scan Quality Problems
The Edges of Your Original Are Not Scanned
If you are scanning in Full Auto Mode, or using thumbnail preview in Home Mode or Professional Mode, move the document or photo about 6 mm (0.2 inch) away from the horizontal (b) and vertical (a) edges of the document table to avoid cropping.
If you are scanning using normal preview in Office Mode, Home Mode, or Professional Mode, move the document or photo about 3 mm (0.12 inch) away from the horizontal (b) and vertical (a) edges of the document table to avoid cropping.
You See Only a Few Dots in Your Scanned Image
Make sure the document or photo is placed on the document table with the side to be scanned facing down. See Placing Documents or Photos for details.
Check the scanning software settings, such as image type and resolution..
A Line or Line of Dots Always Appears in Your Scanned Images
The document table or transparency unit window may need cleaning. Clean the document table. See Cleaning the Scanner.
If you still have the problem, the document table or transparency unit window may be scratched. Contact Epson for assistance.
Straight Lines in Your Image Come Out Crooked
Make sure the document lies perfectly straight on the document table.
Your Image Is Distorted or Blurred
Make sure the document or photo lies flat on the document table. Also make sure your document or photo is not wrinkled or warped.
Make sure you do not move the document or photo, or your scanner while scanning.
Make sure the scanner is placed on a flat, stable surface.
Check the scanning software settings, such as resolution and image adjustment.
Colors Are Patchy or Distorted at the Edges of Your Image
If your document is very thick or curled at the edges, cover the edges with paper to block external light as you scan.
Your Scanned Image Is Too Dark
If your original is too dark, try using the Backlight Correction feature in Home Mode or Professional Mode. See EPSON Scan Help for details.
Check the Brightness setting in Office Mode, Home Mode, or Professional Mode. See EPSON Scan Help for details.
Click Configuration, select the Color tab, and change the Display Gamma setting to match your output device, such as a monitor or printer. See EPSON Scan Help for details.
Click Configuration, select the Color tab, and select Color Control and Continuous auto exposure. See EPSON Scan Help for details.
Click Configuration, select the Color tab, and click Recommended Value to return the Auto Exposure setting to the default. See EPSON Scan Help for details.
Click the 
Histogram Adjustment icon in Professional Mode to adjust the brightness.
Histogram Adjustment icon in Professional Mode to adjust the brightness.Check the brightness and contrast settings of your computer monitor.
An Image on the Back of Your Original Appears in Your Scanned Image
If your original is printed on thin paper, images on the back may be visible to the scanner and appear in your scanned image. Try scanning the original with a piece of black paper placed on the back of it. Also check the scanning software settings such as image type and image adjustment.Top
Ripple Patterns Appear in Your Scanned Image
A ripple or cross-hatch pattern (called moiré) may appear in a scanned image of a printed document. It is caused by interference from the differing pitches in the scanner’s screen and the halftone screen in your original.
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Original image
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Descreening applied
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Select the Descreening check box in Office Mode, Home Mode, or Professional Mode. In Professional Mode, select an appropriate Screen Ruling for the Descreening and deselect the Unsharp Mask settingin EPSON Scan. See EPSON Scan help for details.
Select a lower resolution setting. See the scanning software help for details.
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You cannot remove ripple patterns when you are scanning film or monochrome images, or scanning using a resolution higher than 600 dpi.
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Characters Are Not Recognized Well When Converted into Editable Text (OCR)
Make sure the document lies perfectly straight on the document table.
Try the skew correction function. See the scanning software help for details.
Check your OCR software manual to see if there are any settings you can adjust in your OCR software.
Scanned Colors Differ From the Original Colors
Scan quality can be improved by changing the current settings or adjusting the scanned image. See Adjusting the Scanned Image
Check the color matching and color management capabilities of your computer, display adapter, and software. Some computers can change the palette of colors on your screen. See your software and hardware manuals for details.
Use the color management system for your computer: ICM for Windows, or ColorSync for Macintosh. Add a color profile that matches your monitor to improve on-screen color matching. Exact color matching is very difficult. Check your software and monitor documentation for information on color matching and calibration.
Printed colors can never exactly match the colors on your monitor because printers and monitors use different color systems: monitors use RGB (red, green, and blue) and printers typically use CMYK (cyan, magenta, yellow, and black).
Striped Rings Appear in Your Scanned Image of Film or Slides Images (EPSON Perfection V370 Photo only)
A ring-shaped pattern of stripes (called a Newton ring) sometimes appears on scanned images of transparent materials. This may occur if the film is curled.
Images are Rotated Incorrectly
Make sure the documents or photos are placed on the document table correctly. See Placing Documents or Photos for details.
Make sure the film or slides are placed in the film holder correctly and the film holder is properly positioned on the document table. See Placing Film or Slides (EPSON Perfection V370 Photo Only) for details.
Rotate the images. See the scanning software help for details.