Dyes: How to Tell What's What
You’ve seen the references to "gold dye", "green dye", "blue dye", "silver on gold", "silver on silver" as descriptions of CD-R media. It gets rather confusing when trying to understand which is which, even with samples right in front of you.
This way of describing CD-R media originated innocently enough when the industry was younger and gold CD-R media was the only type available. At that time, you could pick up a CD-R, turn it over, and see either a green color or gold color…simple enough.
There are three types of dye currently in use for CD-R media:
*Mitsui Chemicals Inc. holds a worldwide patent on phthalocyanine dye.
**Not in widespread use