Preferably, the first drive source and the second drive source may be spaced from each other in {HEAD ~ a direction} parallel to {TAIL ~ the transfer path} 
parallel to
Preferably , the first drive source and the second drive source may be spaced from each other in { HEAD ~ a direction } parallel to { TAIL ~ the transfer path }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL