The process of manufacture of a CD by stamping begins with the
production of the scale model, the master. We must start off
of an original one, normally recorded in a conventional Pc’s
recorder.
All the process of manufacture of the masters has to be done
in clean cameras, with the leaked and sterilized air at any
moment.
The workers are protected to avoid detachments of hair or
grudges of skin. The smallest dust particle can ruin all the process.
The first material that is worked out are the glass discs, which
are polished until obtaining a surface adapted for the process.
Next they are covered with a resin layer very tenuous, but
appropriated to exert its function. On this crystal disc with
the resin it is where with a laser the image of the CD is
recorded.
In the photo you can see that through oblique light it is
possible to see the image printed on the resin. With these
discs that already take all the information of the CD, we
begin to make the metal plates (zinc) that are going to contain
the information. In the photo it is possible to see two
of these metallic discs, before and after cut.
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