Image colors are patchy at the edges, Ripple patterns appear in an image – Epson WorkForce WF-2930 Wireless All-in-One Color Inkjet Printer User Manual
Page 293
293
Characters are Not Recognized During Conversion to Editable Text (OCR)
If characters in your scanned images are not recognized during OCR conversion, try these solutions:
• Make sure your original is loaded straight on your product.
• Use an original with clear text.
• When saving scanned images as Searchable PDFs, make sure the correct OCR language is selected.
• Adjust the following Epson Scan 2 or Epson ScanSmart settings if available, and try scanning again:
• On the
Main Settings
tab, make sure you select the correct
Image Type
for your original.
• On the
Main Settings
tab, set the
Resolution
between 200 and 600 dpi.
• 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 2 settings (if available) and try scanning again:
• Select the
Descreening
setting.
• Select a lower
Resolution
setting.
• Place the original at a slightly different angle.
Parent topic:
Solving Scanned Image Quality Problems
Related references