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