Brother MFC-J825DW - Manual (Page 151)

Printing and Faxing
142
8
Sending a fax (MFC models only)
8
You can send a fax directly from an application.
a Create a document in an application.
b
From an application such as Apple TextEdit, click File, then Print.
 (Mac OS X 10.4.11)
 (Mac OS X 10.5.x to 10.6.x)
Click the disclosure triangle beside the Printer drop-down list.