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