[FONT=arial,helvetica]CD-ROM Manufacturing Process: [/FONT] [FONT=arial,helvetica] [/FONT] [FONT=arial,helvetica]Laser[/FONT][FONT=arial,helvetica] Silver Photoresist Glass[/FONT] [FONT=arial,helvetica] [/FONT] Glass Master The Glass master is produced directly from the customer's file. An optically ground, glass disc is coated with 1/10th micron thick layer of photoresist. This is exposed or "written" by a laser which produces a pattern of pits, transferring the information from the master. Father The master disc is electroplated with nickel which, when separated from the master, forms a negative known as the "Father". [FONT=arial,helvetica] Mother The father could be used to replicate CD's, but this would wear out too quickly. Instead, several "Mothers" (or positives) are created by plating the Father.[/FONT] Stamper In the third plating stage, each Mother is used to create a number of Stampers. These are used to actually mold the pit structure onto the CDs. Clear Disc Similarly to conventional methods, CDs are made using injection molding techniques and a Stamper. CD-Rom Disc The information surface is coated with a micron thick layer of aluminium to provide a reflective surface. This is the surface actually read by the CD player. The reflective surface is protected by a lacquer coating. The disc's label is then printed directly onto the disc. [FONT=arial,helvetica] [/FONT][FONT=arial,helvetica] [/FONT]
The following video should explain everything: http://www.youtube.com/watch?v=YZKD2aYLTWw&feature=related Master disc made in glass is extremely cool and reminds me of laserdics (in size terms). Plus 100,000 cds/dvds in day is unreal.
Not a fan of the modern injection method, not enough aluminum. My old Cd-roms are a lot more robust than the new ones.
Wow this thread is informative!! I honestly thought that they burn every single one from a blank disc...