The storage magazines are mounted on the elevator assembly, and wafer transfer blades transfer the wafers between the magazines and radially moveable chucks which carry {HEAD ~ the wafers} to and from {TAIL ~ the wafer holding positions} in the trays 
The storage magazines are mounted on the elevator assembly , and wafer transfer blades transfer the wafers between the magazines and radially moveable chucks which carry { HEAD ~ the wafers } to and from { TAIL ~ the wafer holding positions } in the trays
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 HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH