222 Functions of the Control Panel
Buffer Size
Determines the amount of memory to be used for receiving data 
and printing data. If Maximum is selected, more memory is 
allocated for receiving data. If Minimum is selected, more memory 
is allocated for printing data.
Note:
❏ To activate Buffer Size settings, you must turn off the printer for 
more than five seconds then turn it back on. Or, you can perform a 
Reset All operation, as explained in “Reset Menu” on page 219. 
❏ Resetting the printer erases all print jobs. Make sure the Ready light 
is not flashing when you reset the printer.
USB Menu
These settings control communication between the printer and 
the computer when using the USB interface.
USB I/F
Allows you to activate or deactivate the USB interface.
Buffer Size
Determines the amount of memory to be used for receiving data 
and printing data. If Maximum is selected, more memory is 
allocated for receiving data. If set to Minimum is selected, more 
memory is allocated for printing data.
Item  Settings (default in bold)
USB I/F On, Off
Buffer Size Normal, Maximum, Minimum