What makes Acu-Disc® DL Blu-Ray discs better then DVD. Surface: White Thermal, for all thermal printers. Acu-Disc® Blu-ray discs are manufactured using High to Low (HTL) Phase-change technology. The usage of a blue laser instead of a red laser and improved lens specifications allow for a much smaller focus laser beam which enables the recording of much smaller and higher density pits on the disc.
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