Epson ES-500W Users Guide - Page 128
Ripple Patterns Appear in an Image, Spots or Lines Appear in All Scanned Images, Text Enhancement
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• Select or adjust the Text Enhancement setting. • Adjust the Threshold setting. • Set the scanning resolution between 200 and 600 dpi. • If you are using OCR software, check the manual for any additional adjustments. Parent topic: Solving Scanned Image Quality Problems Related concepts Convert Scanned Documents to Editable Text (OCR) 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, follow these steps to clean inside the scanner: Note: The illustrations show the ES-500W, but the instructions are the same for the ES-400. 1. Turn off the scanner. 2. Unplug the AC adapter. 3. Disconnect any connected cables. 128