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Kerner
2 years ago

Hello,

Here, the dye AZO is applied.

Reason: Keeps longer than 100a.

Raws with a blue shimmering reflection layer are less common, they are based on the dye
Azores. Like cyanine, it is blue, but the blue remains visible downward through a reflection layer of silver. The manufacturer promises for this type of CD-Rs a similarly long shelf life as the gold media. Verbatim uses it for example in its blanks of the Data-Life-Plus series. In the bluish shimmering blanks, an average life of 100 years is also assumed.

Coating in CD-Rohlingen

There are three different dyes (Dye = organic dye).

  • cyanine– blue, green, turquoise or light blue
  • phthalocyanine– colourless, silvery-green, silver, gold
  • Azores– deep blue

Hansi

Source:

https://www.hardwarejournal.de/cd-rohlinge-coat.html

https://www.allnatura.de/allnatura-essenziell/gepruefte-produkt-qualitaet/schadstoff-lexikon/azo-farben.html

Tilo2300
2 years ago

The question is in so far as not all discs have a blue coating. At BlueRays, I could imagine that a blue filter protects the data layer from parasitic other wavelengths… e.g. UV and infrared.

Since the data density in BlueRays is much more dense than in CDs or DVDs, the Pits and Lands (the “Löchers” which represent the data) are much smaller and therefore more sensitive… probably also against UV, IR, etc.

lasdas
2 years ago

But not all. Could that be a Blu-ray disk?

lasdas
2 years ago
Reply to  Lisamarie68

Well, I just know that this disc is blushing.

lasdas
2 years ago

This is due to the special coating of this disc. But I don’t know the procedure.

Jensen1970
2 years ago

Gives only those in silver.