Epson DS-40 WorkForce DS-40 User Manual - Page 68

Ripple Patterns Appear in an Image, Spots or Lines Appear in All Scanned Images, Text Enhancement

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• Adjust these Epson Scan settings (if available) and try scanning again: • Select Text Enhancement • Select the correct Image Type setting • Adjust the Threshold setting • Set the scanning resolution between 200 and 600 dpi. • Check the manual for your OCR software for any additional adjustments. Parent topic: Solving Scanned Image Quality Problems Related tasks Scanning Using OCR - Windows Scanning Using OCR - OS X Ripple Patterns Appear in an Image You may see a ripple pattern (called a moiré) in scanned images of printed documents. This is caused by interference from differing pitches in the scanner's screen and your original's halftone screen. To reduce this effect, adjust these Epson Scan settings (if available) and try scanning again: • Select the Descreening setting. • Select a lower Resolution setting. Parent topic: Solving Scanned Image Quality Problems Related tasks Scanning with Epson Scan Spots or Lines Appear in All Scanned Images If spots or lines appear in all your scanned images, try these solutions: • Clean the scanner glass. • Calibrate the scanner. Note: If you are scanning a plastic card with a shiny surface, it can create a line in the scan. Parent topic: Solving Scanned Image Quality Problems Related tasks Cleaning Inside Your Scanner Calibrating Your Scanner 68

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• Adjust these Epson Scan settings (if available) and try scanning again:
• Select
Text Enhancement
• Select the correct
Image Type
setting
• Adjust the
Threshold
setting
• Set the scanning resolution between 200 and 600 dpi.
• Check the manual for your OCR software for any additional adjustments.
Parent topic:
Solving Scanned Image Quality Problems
Related tasks
Scanning Using OCR - Windows
Scanning Using OCR - OS X
Ripple Patterns Appear in an Image
You may see a ripple pattern (called a moiré) in scanned images of printed documents. This is caused
by interference from differing pitches in the scanner's screen and your original's halftone screen. To
reduce this effect, adjust these Epson Scan settings (if available) and try scanning again:
• Select the
Descreening
setting.
• Select a lower
Resolution
setting.
Parent topic:
Solving Scanned Image Quality Problems
Related tasks
Scanning with Epson Scan
Spots or Lines Appear in All Scanned Images
If spots or lines appear in all your scanned images, try these solutions:
• Clean the scanner glass.
• Calibrate the scanner.
Note:
If you are scanning a plastic card with a shiny surface, it can create a line in the scan.
Parent topic:
Solving Scanned Image Quality Problems
Related tasks
Cleaning Inside Your Scanner
Calibrating Your Scanner
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