Epson WorkForce Pro WF-C4810 Users Guide - Page 347

Image Colors are Patchy at the Edges, Ripple Patterns Appear in an Image, Streaks Appear in All

Page 347 highlights

• Select Settings > Scan Settings and try adjusting these settings and scanning again: • On the Main Settings tab, make sure you select the correct Image Type for your original. • On the Main Settings tab, try increasing the Resolution setting. • On the Advanced Settings tab, select Text Enhancement and choose a setting. Note: The Text Enhancement setting depends on the selected Image Type. • If the Image Type is set to Black & White, adjust the Threshold setting on the Advanced Settings tab. (The Image Option must be set to None.) Parent topic: Solving Scanned Image Quality Problems 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 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 on the Advanced Settings tab. • Select a lower Resolution setting. • Place the original at a slightly different angle. Parent topic: Solving Scanned Image Quality Problems Related references Additional Scanning Settings - Main Settings Tab Additional Scanning Settings - Advanced Settings Tab Streaks Appear in All Scanned Images If streaks appear in all your scanned images, try these solutions: • 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. 347

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347
• Select
Settings
>
Scan Settings
and try adjusting these settings and scanning again:
• On the
Main Settings
tab, make sure you select the correct
Image Type
for your original.
• On the
Main Settings
tab, try increasing the
Resolution
setting.
• On the
Advanced Settings
tab, select
Text Enhancement
and choose a setting.
Note:
The
Text Enhancement
setting depends on the selected
Image Type
.
• If the
Image Type
is set to
Black & White
, adjust the
Threshold
setting on the
Advanced Settings
tab. (The
Image Option
must be set to
None
.)
Parent topic:
Solving Scanned Image Quality Problems
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
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 on the Advanced Settings tab.
• Select a lower
Resolution
setting.
• Place the original at a slightly different angle.
Parent topic:
Solving Scanned Image Quality Problems
Related references
Additional Scanning Settings - Main Settings Tab
Additional Scanning Settings - Advanced Settings Tab
Streaks Appear in All Scanned Images
If streaks appear in all your scanned images, try these solutions:
• 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.