Allows you to specify the bidirectional communication mode. When you select Off, bidirectional communication is disabled.

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 239.

❏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.

242Using the Control Panel