Image colors are patchy at the edges, Image is too dark, Back of original image appears in scanned image – Epson WorkForce ST-M3000 Monochrome MFP Supertank Printer User Manual
Page 316: Ripple patterns appear in an image

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Parent topic:
Solving Scanned Image Quality Problems
Related references
Additional Scanning Settings - Main Settings Tab
Additional Scanning Settings - Advanced Settings Tab
Image Colors are Patchy at the Edges
If you are scanning a thick or warped original, cover its edges with paper to block external light as you
scan it.
Parent topic:
Solving Scanned Image Quality Problems
Image is Too Dark
If your scanned image is too dark, try these solutions:
• If the
Image Type
is set to
Color
or
Grayscale
, adjust the
Brightness
setting.
• Check the brightness and contrast settings of your computer monitor.
Parent topic:
Solving Scanned Image Quality Problems
Related references
Additional Scanning Settings - Main Settings Tab
Additional Scanning Settings - Advanced Settings Tab
Back of Original Image Appears in Scanned Image
If an image from the back of a thin original appears in your scanned image, try these solutions:
• Place a piece of black paper on the back of the original and scan it again.
• Adjust these Epson Scan 2 settings (if available) and try scanning again:
• Select the
Advanced Settings
tab and adjust the
Brightness
setting.
• Select
Text Enhancement
.
Parent topic:
Solving Scanned Image Quality Problems
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.