In the second embodiment, outer and inner peripheral end edge portions of the reflective layer extend past the corresponding peripheral end edge portion or {HEAD ~ portions} of the recording layer, and {TAIL ~ the barrier layer adheres} to the reflective layers extended peripheral edge region 
In the second embodiment , outer and inner peripheral end edge portions of the reflective layer extend past the corresponding peripheral end edge portion or { HEAD ~ portions } of the recording layer , and { TAIL ~ the barrier layer adheres } to the reflective layers extended peripheral edge region
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 OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH