Brother MFC-3420C - Manual (Page 72)

3 - 15 USING THE BROTHER CONTROL CENTER
Scanner settings
From the pull-down list, select the scanning mode that is appropriate
for the type of file: Faxing, Filing and Copying; Text for OCR;
Photos; Photos (High Quality); Photos (Quick Scan); Custom;
Draft Copy or Fine Copy.
To change any of the settings for this mode, click Modify Settings.
Target Application
Application—From the pull-down list, select the application you want
to add to this Pop-Up screen.
Click the Custom Link Settings button to set up links for your
user-defined application.