This method produces the clear plastic blank part of the disc. After a metallic reflecting layer (usually aluminium, but sometimes gold or other metal) is applied to the clear blank substrate, the disc goes under a UV light for curing and it is ready to go to press. To prepare to press a CD, a glass master is made, using a high-powered laser on a device similar to a CD writer. The glass master is a positive image of the desired CD surface (with the desired microscopic pits and lands). After testing, it is used to make a die by pressing it against a metal disc.
This method produces the clear plastic blank part of the disc . After a metallic reflecting layer ( usually aluminium , but sometimes gold or other metal ) is applied to the clear blank substrate , the disc goes under a UV light for curing and it is ready to go to press . To prepare to press a CD , a glass master is made , using a high - powered laser on a device similar to a CD writer . The glass master is a positive image of the desired CD surface ( with the desired microscopic pits and lands ) . After testing , it is used to make a die by pressing it against a metal disc .
How are glass masters created?
How are glass masters created ?
high-powered laser
high-powered laser