If charge up does not occur in the pattern 171, then the tail 175 does not appear in {HEAD ~ the downstream} of {TAIL ~ the scan line} in the pattern 171 as the digital image in each of the reciprocating scan lines 173 and 174, resulting in a high degree of coincidence 
If charge up does not occur in the pattern 171 , then the tail 175 does not appear in { HEAD ~ the downstream } of { TAIL ~ the scan line } in the pattern 171 as the digital image in each of the reciprocating scan lines 173 and 174 , resulting in a high degree of coincidence
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH