By the presence of {HEAD ~ these adhesion regions}, {TAIL ~ the reflective layer} 114, the recording layer 116 and the barrier layer 118 adhere strongly onto the substrate 112 
By the presence of { HEAD ~ these adhesion regions } , { TAIL ~ the reflective layer } 114 , the recording layer 116 and the barrier layer 118 adhere strongly onto the substrate 112
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH