Threshold; Unsharp Mask - Epson DS-780N User Manual

User's Guide
Advanced Scanning

Threshold

You can adjust the border for monochrome binary (black and white). Increase the threshold, the black color area
becomes larger. Decrease the threshold, the white color area becomes larger.
Note:
This feature may not be available depending on the settings on the Main Settings tab > Image Type or the settings on the
Advanced Settings tab.

Unsharp Mask

You can enhance and sharpen the outlines of the image.
Note:
This feature is not available when selecting the Main Settings tab > Image Type > Black & White.
Descreening
You can remove moiré patterns (web-like shadows) that appear when scanning printed paper such as a magazine.
To check for moiré patterns, display the image at 100 % (1:1). If the displayed image is zoomed out, the image
appears rough and may look like it has moiré patterns.
Note:
❏ To use this feature, set the Resolution on the Main Settings tab to 600 dpi or less.
❏ This feature is not available when selecting the Main Settings tab > Image Type > Black & White.
❏ The effect of this feature cannot be checked in the preview window.
❏ This feature softens the sharpness of the scanned image.
80