Brother International 1940CN Software User Guide - Page 144
Adjusting the Image, Brightness, Contrast, Colour Type
UPC - 012502610908
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Adjusting the Image Brightness Adjust the Brightness setting to get the best image. The Brother TWAIN Scanner driver offers 100 Brightness levels (-50 to 50). The default value is 0, representing an 'average' setting. You can set the Brightness level by dragging the slide bar to the right to lighten the image or to the left to darken the image. You can also type a value in the box to set the level. Click OK. If the scanned image is too light, set a lower Brightness level and scan the image again. If the image is too dark, set a higher Brightness level and scan the image again. Contrast You can only adjust the Contrast level when you have selected one of the Gray Scale settings, it is not available when you have selected Black & White as the selected Colour Type. Increasing the Contrast level (by dragging the slide bar to the right) emphasizes dark and light areas of the image, while reducing the Contrast level (by dragging the slide bar to the left) reveals more detail in the gray areas. Instead of using the slide bar, you can type a value in the box to set the Contrast. Click OK. 8 - 20 USING YOUR MACHINE WITH A MACINTOSH®