Panasonic KV-S7065C Reference Manual page 47

3 Scan the document, and check the brightness.
4 If different settings are to be used for the front and back sides with Both
scanning, select [Front] or [Back] in the [Select Setting Side] section, and then
operate the slider bar.
TWAIN configuration method
1 Click the [Image Enhance] tab of the [TWAIN] dialog box.
2 To set a different brightness level for each scanning mode, set the [Advanced
Image Enhancements] box to on, and then click the [Binary Image], [Gray
Image] or [Color Image] tab.
3 To set different brightness levels for the front and back sides with both
scanning, set the [Front/Back Same Settings] check box to off.
4 Click the mouse and drag the [Brightness] slider bar to the left or right to adjust
the brightness. Alternatively, a number (1 to 255) can be entered directly in the
[Brightness] edit box.
5 Scan the document, and check the brightness.
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