{HEAD ~ The laser beam} 17, which have reached the medium surface, transmits through the transparent protective resin layer 14 and {TAIL ~ the dielectric layer} 13 to reach the recording layer 12, at which the laser beams form a focus 18 
transmits through
{ HEAD ~ The laser beam } 17 , which have reached the medium surface , transmits through the transparent protective resin layer 14 and { TAIL ~ the dielectric layer } 13 to reach the recording layer 12 , at which the laser beams form a focus 18
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH 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