Originally posted by cdfreaka
I heard that Taiyo Yuden's weren't that good since they use cyanine dye?
Each media manufacturer strives to balance the engineering characteristics of the dye to insure greater compatibility with recorders and readers and long archive life.
Cyanine dye and its metal-stabilized derivatives were originally used because the Orange Book Part l referred to the recording characteristics of cyanine-based dyes in establishing CD-Recordable standards .
So, dyes based on cyanine tend to have a wide range of acceptable recording power levels and recording speeds .
The phthalocyanine dye is a newer dye that appears to be less sensitive to exposure to light after recording so that longevity has been improved.
Azo dye has been used in other optical recording media and is now being used in CD-R. The media manufacturers use these different dyes in combination with dye thickness, reflectivity thickness and material and groove structure to fine tune their recording characteristics for a wide range of recording speeds, recording power and media longevity.
Lfetime estimation of any storage medium is a very complex and statistical based process.
The CD-R media manufacturers have performed extensive media longevity studies within these industry defined tests and mathematical modeling techniques with results
claiming longevity from 70 years to over 200 years .
The primary caveat is how you handle and store the media. With proper handling and storage, your CD-Rs will outlive you.