Brother MFC-640CW - Manual (Page 113)

Printing and Faxing
107
Sending a fax
(For MFC models only)
8
For Mac OS
®
X
8
You can send a fax directly from a Macintosh ® application.
a Create a document in a Macintosh ® application.
b Click File, then Print.
The Printer dialog box appears:
c
Choose Send Fax from the pop-up menu.