CDROM for Library
24-Jan-93 14:30:56
Sb: #37836-CDROM for Library
Fm: Katherine Cochrane 71216,1271
To: JAN SCHWENK 70053,1702
Jan,
Actully, disc masters are made of silver, not nickel, by some companies.
The stampers, that are mirror images of the "father" disc, are frequently
nickel. Disc Manufacturing, Inc. (DMI) saves the masters, but replaces the
stampers after a certain period of use. This is over-simplified (I omitted
the step of making the "glass master" or "mother" disc), but may at least
show something about the process of mass-replicated discs.
One-Off CDs are made with an entirely different process, however. No glass
masters, no stampers. We just "burn" individual "blanks" that are
pre-formed using polycarbonate substrate, an organic dye data layer, 24K
gold metalized layer, and lacquer over the metal to protect it from
scratches and oxidation.
Kathy <<– The One-Off CD Shop MidSouth, Inc.