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Chapter 7 ISIS/TWAIN Driver Settings
7-7
Mode-Dependent Function Limitations
The following tab sheet functions are partially disabled according to the selected mode. Refer to
“[Brightness] Tab Sheet,” on p. 7-13 for the [Brightness] tab sheet settings.
✓ : Available for setting
— : Not available for setting
Page Size
Select the page size of the document to be scanned.
☞ Select [Auto-detection] to scan the following kinds of documents.
• Documents of undetermined size
• Documents including mixed page sizes
• When using the Long document mode (See “Long Document Mode,” on p. 3-30.)
☞ When [Auto-detection] is selected, area settings in the Scan Area dialog box are disabled.
☞ The [Auto-detection] process may malfunction in the following situations. If this occurs, select a
standard size such as [A4] or [Letter], or click the [Area] button to create a custom page size. (See
“[Scan Area] Dialog Box,” on p. 7-11.)
• When scanning a page with a dark area at the left or right 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
☞ Depending on the application program, operation may become unstable when [Auto-detection] is
enabled. In that case, [Auto-detection] should be disabled.
Tab sheet
Scanning mode
Basic Image processing Others
Deskew
Moire Reduction
Edge enphasis
Erase Dot
Border Removal
Prevent Bleed Through /
Remove Background
Reverse Image
(TWAIN driver)
Color drop-out
JPEG Transfer
Batch Separation
Prescan
Black and White
✓✓✓✓✓✓✓✓— ✓✓
Error Diffusion
✓✓✓— ✓✓✓✓— ✓✓
Advanced Text Enhancement
✓✓✓✓✓— ✓✓— ✓✓
Advanced Text Enhancement II
✓✓— ✓✓— ✓✓— ✓✓
High-Speed Text Enhancement
———✓ —— ✓✓— ✓✓
256-level Gray
✓✓✓— ✓✓— ✓✓✓✓
24-bit Color
✓✓✓— ✓✓——✓✓✓
Auto Color Detection
✓✓✓✓✓———✓ ——