
Hint
If all of the settings on the [Brightness] tab sheet are disabled, the gamma setting is set to Custom. (See “[Gamma Settings] Dialog Box” on p.
The availability of brightness and contrast settings are as follows, according to the mode setting on the [Basic] tab sheet.
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| Auto | Brightness | Contrast | Side Back Use Brightness | Side Back Use Contrast | |
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| Black and White | ✔ | ✔ | ✔ | ✔ | ✔ | |
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| Error Diffusion | – | ✔ | ✔ | ✔ | ✔ | |
Scanning |
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Advanced Text |
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| Advanced Text | – | ✔ | – | – | – | |
| Enhancement |
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Modes | Enhancement II | – | ✔ | ✔ | – | – | |
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– | ✔ | ✔ | ✔ | – | |||
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| – | ✔ | ✔ | ✔ | ✔ | ||
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| Auto Color Detection | – | ✔ | ✔ | ✔ | ✔ | |
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✔: available for setting,
You can configure the following settings on the [Basic] tab sheet.
[Auto] Check Box
This is enabled when the scanning mode is [Black and White]. The brightness and contrast are adjusted according to the document.
Chapter 8 ISIS/TWAIN Driver Settings
Brightness
Adjusts the brightness of images to be scanned.
Hint
•If images are too dark or if text on the back of a sheet bleeds through, you can drag the slider to the right to increase the setting.
•If images are too light, drag the slider to the left to decrease the setting.
•When the [Auto] check box is selected, the slider automatically selects a brightness level to be used for automatic adjustment.
Contrast
This is enabled when the scanning mode is [Black and White]. The brightness and contrast are adjusted according to the document properties.
[Use Back Side Brightness] Check Box
If the brightness of the front and back of the document pages is different, select this check box to adjust only the brightness of the back side.
[Use Back Side Contrast] Check Box
If the contrast of the front and back of the document pages is different, select this check box to adjust only the contrast of the back side.