Settings In The Scanner Window - Brother MFC-9420CN Software User's Manual

Scanning

Settings in the Scanner window

Image
Resolution
From the Resolution pop-up menu choose the scanning resolution. Higher resolutions use more memory
and transfer time, but produce a finer scanned image. The following list shows the resolution you can choose.
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100 x 100 dpi
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150 x 150 dpi
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200 x 200 dpi
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300 x 300 dpi
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400 x 400 dpi
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600 x 600 dpi
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1200 x 1200 dpi
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2400 x 2400 dpi
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4800 x 4800 dpi
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9600 x 9600 dpi
Colour Type
Black & White — Set the image Type to Black and White for
text or line art. For photographic images, set the image type
to Gray (Error diffusion) or True Gray.
Gray (Error Diffusion) — is used for documents that have
photographic images or graphics. (Error Diffusion is a method
for creating simulated gray images without using true gray
dots. Black dots are placed in a specific pattern to give the
appearance of gray.)
True Gray — is used for documents with photographic
images or graphics. This mode is more exact because it uses
up to 256 shades of gray.
Colours — Choose either 8-bit Colour, which scans up to 256
colours or 24-bit colour which scans up to 16.8 million colours. Although using 24-bit colour creates an image
with the most accurate colours, the image file will be about three times larger than a file created with 8-bit
Colour. It requires the most memory and takes the longest transfer time.
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