Brother MFC-3420C - Manual (Page 170)

9 - 15 USING YOUR MACHINE WITH A MACINTOSH ®
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.
Resolution Black & White /
Gray
(Error Diffusion) 8 bit color True Gray /
24 bit color
100 x 100 dpi Yes Yes Yes
150 x 150 dpi Yes Yes Yes
200 x 200 dpi Yes Yes Yes
300 x 300 dpi Yes Yes Yes
400 x 400 dpi Yes Yes Yes
600 x 600 dpi Yes Yes Yes
1200 x 1200 dpi Yes No Yes
2400 x 2400 dpi Yes No Yes
4800 x 4800 dpi
(For MFC-3420C
and MFC-3820CN
Only)
Yes No Yes
9600 x 9600 dpi
(For MFC-3420C
and MFC-3820CN
Only)
Yes No Yes