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TWAIN Driver Settings (Mac)

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The options and settings available vary depending on the machine.
  1. Resolution
    Select a scanning resolution from the Resolution pop-up menu. Higher resolutions produce a finer scanned image but consume more memory and increase transfer time.
  2. Scan Type
    Select from a range of scan color depths.
    • Black & White
      Use for text or line art images.
    • Gray (Error Diffusion)
      Use for photographic images or graphics. (Error Diffusion is a method for creating simulated grayscale images without using true gray dots. Black dots are put in a specific pattern to give a gray appearance.)
    • True Gray
      Use for photographic images or graphics. This mode is more accurate because it uses up to 256 shades of gray.
    • 24bit Color
      Use to create an image with the most accurate color reproduction. This mode uses up to 16.8 million colors to scan the image, but it requires the most memory and has the longest transfer time.
  3. Document Size
    Select the exact size of your document from a selection of preset scan sizes. If you select Custom, you can specify the document size.
  4. Adjust Image
    Click the Adjust Image button for adjusting the image.
    • Brightness
      Set the Brightness level by moving the slider to the right or left to lighten or darken the image.If the scanned image is too light, set a lower brightness level and scan the document again. If the image is too dark, set a higher brightness level and scan the document again. You can also type a value in the field to set the brightness.
    • Contrast
      Increase or decrease the Contrast level by moving the slider to the right or left. An increase emphasizes dark and light areas of the image, while a decrease reveals more details in gray areas. You can also type a value in the field to set the contrast.
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      The Contrast setting is available only when setting Scan Type to Gray (Error Diffusion), True Gray or 24bit Color.

    • Reduce Noise

      You can improve and enhance the quality of your scanned images with this selection. The Reduce Noise setting is available when using 24bit Color and scan resolutions of 300 x 300 dpi, 400 x 400 dpi or 600 x 600 dpi.

  5. 2-sided Scanning
    Scan both sides of the document.
  6. Rotate Image
    Rotate the scanned image.
  7. PreScan
    Click PreScan to preview your image and crop unwanted areas before scanning. Cropping is available when 2-sided Scanning setting is off.
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