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Epic 880
TM
Programmers Notes
100-88002 Rev B Page 245
USB driver:
A USB driver is a low level device driver, required for USB communication with the
printers. It is a plug and play driver and needs to be installed for USB printers, when
the printer is initially plugged into the system.
Figure 34 USB Driver
When to use the USB driver:
USB Driver is needed whenever data is to be sent/received from the printer using the
USB interface. It is needed with both the Windows and the OPOS drivers, when these
drivers use the USB interface as the underlying communication path. It is also needed
if the application does not use either the OPOS or the Windows driver but needs to
communicate directly with the printer using the USB interface.
When not to use the USB driver:
USB driver is not needed if the application uses any of the other forms of
communication viz. serial, parallel or Ethernet, and does not use USB.
Windows Operating System
OPOS
Driver
Windows
Driver
Windows
Print App.
USB Interface
USB Interface
USB Interface
USB
Driv
e
r
USB
PRINTER