a determination portion to determine whether or not {HEAD ~ print data} identical to the print data received by {TAIL ~ said print data reception portion} is stored in said storage device; and 
a determination portion to determine whether or not { HEAD ~ print data } identical to the print data received by { TAIL ~ said print data reception portion } is stored in said storage device ; and
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH