Operation Manual

2-10 Understanding EPSON TWAIN Pro Features
De-screening:
Select either On or Off. When On is selected, moiré patterns
are automatically removed from scanned images, but
scanning takes longer.
Note:
❏ A moiré is a cross-hatch pattern that appears on scanned images
when scanning printed material. It is a result of interference
that occurs due to the difference between the pitches of the
scanning and the halftone screens.
❏ This setting is available when the resolution is less than 800 dpi.
❏ When On is selected, it takes longer to scan.
Dropout:
Select a color to subtract from a black and white scan of a
colored original. Proper use of dropout can improve the
quality of your black and white scans. Available dropout
options are:
None, Red, Green, and Blue.
Note:
❏ Dropout is available only when Pixel Depth is set to 8-bit Gray
or Black & White.
❏ Depending on the image you scan, you may need to adjust the
Threshold setting in the Image Controls dialog box to enable
this feature.
B/W Options:
Select from:
Text Enhancement Technology, Auto Area Segmentation,
or None.