LG GSA-4165B 사용자 설명서
23
5. Writing Process of CD-R Disc
a b c d e f g
a
b
c
d
e
f
g
Incident
Laser
Power
Laser
Power
(Read)
(Read)
(Write)
Laser Spot
Position
(Time)
Position
(Time)
a b c d e f g
Laser Spot
Position
(Time)
Position
(Time)
Laser
Spot
Spot
Recorded
Mark
Mark
Reflected
Light
Signal
Light
Signal
Reflected
Light
Signal
Light
Signal
Below "ORP"– Mark Too Short
At Optimum Record Power ("ORP")
Above "ORP" – Mark Too Long
Time
6. Writing process of CD-RW Disc
Write Power
Erase Power
Read Power
Groove
Crystal
Amorphous
Amorphous
Recorded state
(lower reflectivity)
Melting/
quenching
Heating/
gradual cooling
Crystal phase
Erased state
(higher reflectivity)