Brother MFC-9120CN - Manual (Page 59)

Scanning
51
2
4 Color format
5 File type
6 Resolution
7 Brightness
8 Contrast
Note
The scanner resolution can be set as high as 1200 dpi.
For resolutions greater than 1200 dpi, use the Scanner Utility. For more information, see Scanner Utility
on page 48.
g Click the Scan button in the Scan dialog box.
The machine starts scanning the document.