Brother MFC-3240C - Manual (Page 152)

8 - 30 USING YOUR MACHINE WITH A MACINTOSH ®
SCAN
This section contains four buttons for Scan to Image, Scan to OCR,
Scan to E-mail and Scan to File applications.
Image (example: Apple PreView)
Scan to Image feature allows you to scan an image directly into your
graphics application for image editing. To change the default
settings, click on the button while holding down the Ctrl key and
select Software Button.
Change the other settings, if needed.
By selecting Device Button at each Scan button, you can
configure the Scan key on your machine for each scan feature.