Chapter 7 ISIS/TWAIN Driver Settings

[Folio]

Documents that are normally folded in half are scanned on both sides and composed into one image. (See “Folio Scan,” on p. 3-29.)

☞[Folio] is not displayed if [Patchcode] is selected as the Batch Separation setting on the [Others] tab sheet.

[Deskew] Check Box

The Deskew function detects slanted document pages and straightens the scanned images.

☞The Deskew function does not work properly in the following situations. Disable Deskew in these cases.

•When scanning a page with a dark area near the edge

•When scanning a glossy or reflective document

•When the brightness setting is incorrect

•When Custom setting is selected in the Gamma Settings dialog box

☞Note that in other cases, depending on the document, the slant of the image may not be corrected properly or part of the image may be omitted.

Moire Reduction

When 300 dpi or lower resolution is selected, you can enable Moire reduction if Moire patterns appear in scanned images.

[None]

No Moire processing is performed.

[High Speed Moire Reduction]

This mode gives priority to scanning speed, and generates images with the specified resolution from images scanned at 300 dpi. When 300 dpi resolution is selected, [High-Speed Moire Reduction] is not displayed.

[High Quality Moire Reduction]

This mode gives priority to image quality, and generates images with the specified resolution from images scanned at 600 dpi.

Although image quality is high, scanning is slow.

When [High Quality Moire Reduction] is selected while Page Size is set to [Auto-detection], Mode is set to [24-bit Color], and Scanning Side is set to [Duplex] all at the same time, a portion of the document may not be scanned due to insufficient memory on the scanner. If this occurs, lower the image quality by selecting [Speed priority], or change the Scanning Side setting to [Simplex].

Image Quality

When 400 or 600 dpi resolution is selected, you can enable this and select either [Speed Priority] or [Image Quality Priority Image].

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