Epson ES-865 Users Guide - Page 137
Ripple Patterns Appear in an Image
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• Use an original with clear text. • Receipts made of thermal paper may deteriorate faster. Scan them as soon as possible. • When saving scanned images as searchable PDFs, make sure the correct OCR language is selected. • In Epson ScanSmart, select Settings > Scan Settings, adjust the following settings, 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.) • Set the Image Type to Grayscale. • If the original document is in landscape mode, set the Rotate setting to Auto. • If you are using OCR software, check the manual for any additional adjustments. • Scan thermal paper receipts as soon as possible. They may deteriorate due to age or friction. • When saving to Microsoft Office or Searchable PDF files, check that the correct languages are selected. Check the language in each save setting window. 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, select Settings > Scan Settings in Epson ScanSmart and try adjusting these settings and scanning again: • On the Main Settings tab, try decreasing the Resolution setting. • On the Advanced Settings tab, select the Descreening setting. Parent topic: Solving Scanned Image Quality Problems 137