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• If you are using OCR software, check the manual for any additional adjustments.
• Try using another software program, such as ABBYY FineReader, as the OCR engine. Start Epson
Scan and click
File Save Settings
. Select
as the
File Type
and click
Options
. Click the
Text
tab. Make sure
Fine Reader
is selected as the
OCR Engine
setting and click
OK
twice. Try your scan
again using Epson Scan.
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.
• Select a lower
Resolution
setting.
Parent topic:
Solving Scanned Image Quality Problems
Related references
Spots or Lines Appear in All Scanned Images
If spots or lines appear in all your scanned images, follow these steps to clean the scanner glass:
1. Turn off the scanner and unplug the AC adapter.
2. Disconnect any connected cables.
3. Pull down on the cover open lever and open the scanner cover.
Summary of Contents for FF-640
Page 1: ...FF 640 User s Guide ...
Page 2: ......
Page 6: ...6 A Note Concerning Responsible Use of Copyrighted Materials 136 Copyright Attribution 136 ...
Page 19: ...19 2 Slide the input tray edge guides all the way out ...
Page 24: ...24 2 Slide the input tray edge guides all the way out ...
Page 29: ...29 6 Slide the edge guides against the edges of the carrier sheet ...
Page 33: ...33 2 Slide the input tray edge guides all the way out ...
Page 38: ...38 2 Slide the input tray edge guides all the way out ...
Page 43: ...43 2 Slide the input tray edge guides all the way out ...
Page 45: ...45 4 Slide the edge guides against the edges of the plastic card ...
Page 49: ...49 2 Slide the input tray edge guides all the way out ...
Page 52: ...52 5 Slide the edge guides against the edges of the sheet ...
Page 60: ...60 Windows OS X ...
Page 95: ...95 9 Remove the middle pickup roller from the spindle ...
Page 111: ...111 4 Gently pull out any jammed originals from inside the scanner ...