Brother MFC-9800 - Manual (Page 122)

14 - 12 P R I N T E R D R I V E R S E T T I N G S ( F O R W I N D O W S ® O N L Y )
Print Date & Time
When enabled the Print Date and Time feature will automatically print the date
and time from your computers system clock on your document.
Click the Setting button to change the Date and Time Format, Position and Font.
To include a background with the Date and Time select Opaque. When Opaque
is selected you can set the Darkness of the Date and Time background by
changing the percentage.
Note
The Date and Time indicated in the selection box represents the format the will
be printed. The actual Date and Time printed on your document is
automatically retrieved from the settings of your computer.