The image reader 6, configured to implement {HEAD ~ multiple functions} that include {TAIL ~ functions} other than an image reading function, 
The image reader 6 , configured to implement { HEAD ~ multiple functions } that include { TAIL ~ functions } other than an image reading function ,
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH