Brother MFC-580 Owner's Manual page 114

Scanning a Document into Your Macintosh G3, G4 or iMac
1
Insert the document face down in the ADF.
2
Adjust the following settings, if needed, in the scanner setup dialog box:
Resolution
Colour Type
Brightness
Contrast
Scanning Area
3
Click Start.
When scanning is finished, the image will appear in your graphics application.
Settings in the Scanner Window
Image
Resolution
Choose the scanning resolution from the Resolution pop-up menu. Higher resolutions take more
memory and transfer time, but can achieve a finer scanned image.
Colour Type
Black & White—Set the image Type to Black & White for text or line art. For photographic images,
set the image type to Grey (Error diffusion) or True Grey.
Grey (Error Diffusion)—is used for documents that contain photographic images or graphics. (Error
Diffusion is a method for creating simulated grey images by placing black dots in a specific matrix
instead of true grey dots.)
True Grey—also is used for documents containing photographic images or graphics. This mode is
more exact because it uses up to 256 shades of grey. It requires the most memory and longest transfer
time.
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Chapter 16