Brother FAX-1820C - Manual (Page 119)

MAKING COPIES 10 - 3
Using the Copy keys
(Temporary settings)
When you want to change the settings only for the next copy, use the
Temporary Copy keys. You can use different combinations.
These settings are temporary, and the machine returns to its default
settings 60 seconds after it finishes copying. If you want to use these
temporary settings again, place the next original in the ADF within
that time. However, if you have set the Mode Timer for copy and
Scan (Only for MFC Models) modes to 0 or 30 seconds, the machine
returns to the default settings after the number of seconds that has
been set for mode timer. (See Setting the Mode Timer (MFC-3220C
only) on page 4-5.)
Temporary Copy keys