Epson DS-70 Users Guide - Page 89

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

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• If the Image Type is set to Black & White, adjust the Threshold setting. • Set the Image Type to Grayscale. • Set the scanning resolution between 200 and 600 dpi. • If the original document is in landscape mode, set the Rotate setting to Auto in Epson Scan 2. • If you are using OCR software, check the manual for any additional adjustments. • Scan thermal paper receipts as soon as possible. They may deteriorate due to age or friction. • When saving to Microsoft Office or Searchable PDF files, check that the correct languages are selected. Check the language in each save setting window. Parent topic: Solving Scanned Image Quality Problems Related references Image Format Options Related tasks Scanning in Epson Scan 2 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 2 settings (if available) and try scanning again: • Select the Descreening setting. • Select a lower Resolution setting. Parent topic: Solving Scanned Image Quality Problems Related references Image Format Options Related tasks Scanning in Epson Scan 2 Spots or Lines Appear in All Scanned Images If spots or lines appear in all your scanned images, try these solutions: • Clean inside the scanner using a cleaning sheet. • Calibrate the scanner using a calibration sheet. • Make sure the surface of your original is clean. 89

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89
• If the
Image Type
is set to
Black & White
, adjust the
Threshold
setting.
• Set the
Image Type
to
Grayscale
.
• Set the scanning resolution between 200 and 600 dpi.
• If the original document is in landscape mode, set the
Rotate
setting to
Auto
in Epson Scan 2.
• If you are using OCR software, check the manual for any additional adjustments.
• Scan thermal paper receipts as soon as possible. They may deteriorate due to age or friction.
• When saving to Microsoft Office or Searchable PDF files, check that the correct languages are
selected. Check the language in each save setting window.
Parent topic:
Solving Scanned Image Quality Problems
Related references
Image Format Options
Related tasks
Scanning in Epson Scan 2
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 2 settings (if available) and try scanning again:
• Select the
Descreening
setting.
• Select a lower
Resolution
setting.
Parent topic:
Solving Scanned Image Quality Problems
Related references
Image Format Options
Related tasks
Scanning in Epson Scan 2
Spots or Lines Appear in All Scanned Images
If spots or lines appear in all your scanned images, try these solutions:
• Clean inside the scanner using a cleaning sheet.
• Calibrate the scanner using a calibration sheet.
• Make sure the surface of your original is clean.