In FIG 8A, a second alignment camera 420 of {HEAD ~ a second alignment system} 400 may form a pair with the first align camera 220 for aligning {TAIL ~ a predetermined portion} of the first and second substrates 510 and 520 
In FIG 8A , a second alignment camera 420 of { HEAD ~ a second alignment system } 400 may form a pair with the first align camera 220 for aligning { TAIL ~ a predetermined portion } of the first and second substrates 510 and 520
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH