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MAM's Patented Phthalocyanine |
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All CD-R discs
incorporate a photosensitive dye layer where your data is
stored--it's what gets "burned" when you write to the disc.
This layer is where your data or music is stored in the form
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of "pits"
which are oblong areas that are discolored by the writer. These pits are read by the player and ultimately
transformed into the "1s" and "0s" that make up your digital
information (music and data look the same to the reader).
The accuracy of the stored information is directly affected by how
this dye reacts. That's why the dye is so important.
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Sample of CD
"Pits" |
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MAM's Patented Phthalocyanine (tha-lo-cy-a-neen) dye has
several advantages over others:
- More responsive to the writing laser so
cleaner, better defined pits are created
- Longest lifetime of any photosensitive
dye
- More transparent, contributing to
MAM's high reflectivity
What does this mean
for you? Cleaner pits means fewer errors. Higher
reflectivity means better compatibility among readers.
Longer life......300 years on our gold CD-R is, for all intents and purposes,
forever. |
The Phthalocyanine Molecule
Contrary to the two other types of dye with linear molecular
structure, Phthalocyanine has an annular structure, thus offering the
benefit of solidity by forming a strong and extremely stable chemical
bond.
MAM invented Phthalocyanine and has a world patent on the substance.
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How does MAM dye compare? |
This chart shows the number of errors that develop after exposure to high
humidity and high heat.
(The discs are put into an environmental chamber at 80 C°
degrees and 85% relative humidity. Industry standard analysis
techniques can relate these tests to real life).
Other Organic
Dyes |
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Cyanine |
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Those CD-Rs are green, and include an organic dye based on Cyanine. Their
quality is variable, and they have a shorter lifespan than CD-Rs using
Phthalocyanine-based dye. Light reflection is lower, given the color of
the dye, and the burning is less accurate.
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Metal Azo |
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The CD-Rs made with metal azo are blue, and use a silver reflective layer,
which gives good reflectivity despite the color of the organic dye. Like
Cyanine, the dye is less stable than the Phthalocyanine, has a higher
BLER rate when recording, and consequently a shorter lifespan.
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