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Types of dye
Cyanine
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Cyan blue in color (hence the
name) but can appear as blue or green depending on the
colour of the reflective layer. This was the first dye
used in CD-R media, with the patent held by Taiyo Yuden.
Has an estimated 75 year lifespan.
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| Phthalocyanine |
Has a faint aqua tinge and is less sensitive
to everyday light than cyanine. Developed by Mitsui Toatsu
Chemicals and has an estimated lifespan of 100 years.
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Metalised Azo |
This dark blue dye, created by Verbatim/Mitsubishi
can last up to 200 years.
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| Formazan |
Light green, this dye is a hybrid cyanine/phthaloCyanine combination developed by Kodak and has
a very long lifespan. |
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