Starting with pre-manufactured blank
recordable discs, the data is “burned”
onto the discs one at a time.
Starting with a glass master that
contains the data for the disc, a metal
stamper is formed. The stamper is loaded
into a molding machine and molten
polycarbonate is injected into the mold
thereby manufacturing the disc with the
data stamped into the disc. A reflective
aluminum layer is applied and the discs
are printed with artwork.
There is no data difference between a
processed duplication and a glass
mastered replication disc. But, there
are some differences and sometimes they
do have an impact. The reality has more
to do with the playback equipment than
the manufacturing process.