A method and {HEAD ~ apparatus} for correcting skew of an advancing sheet responsive to {TAIL ~ the detection} of one or the other of aligned fiducial marks located near each of the opposite side edges adjacent the sheet leading edge 
A method and { HEAD ~ apparatus } for correcting skew of an advancing sheet responsive to { TAIL ~ the detection } of one or the other of aligned fiducial marks located near each of the opposite side edges adjacent the sheet leading edge
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH