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How can I find out the DYE TYPE ?

General discussion about recordable CD, DVD and BD media and write quality testing.

How can I find out the DYE TYPE ?

Postby osman on Fri Oct 27, 2006 11:48 am

Hi,

I’m recording videos from tapes to DVD and VCD commercially.
I need a qualified CD-R and DVD-R brand for archiving. I've read lots of things about the quality. As I understood, medias should be phthalocyanine or azo.

I found out the following information on net :
"Buy discs with a gold reflective layer if you're archiving. Use discs with a silver reflective layer for the best compatibility with older drives and players. "

"many manufacturers add additional coloring to disguise their cyanine CD-Rs, so the formulation of a disc cannot be determined based purely on its color. Similarly, a gold reflective layer does not guarantee use of phthalocyanine dye."


1 - Can you tell me an exact cd-r and dvd-r brand for a lifelong archiving?

2 - If it is right that there are tricks to cheat the buyers about the colour, how can we understand the quality of the cd-r? Is there a way to understand it?

3- Can we trust the softwares like "CDR Atip Reader Version 0.92"
or "CDR Media Code Identifier V1.63"

There seems no way to understand the quality with our eyes. Since, there are tricks on colours. And, every sellers say their medias are the best of the market.

Thank you for your help,
osman
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Postby frank1 on Sun Nov 05, 2006 5:55 am

The only soft where I have ever seen an indication of the dye type [underlined in green]
is CDR Media Code Identifier:
Image
I also know the following link where there are descriptions of the dyes used in CD-R and their colors:
http://www.cdmediaworld.com/hardware/cdrom/cd_dye.shtml
From this link I think only experts (and we have them at CDRlabs) are able to tell
the dye used in CD-R's and DVD R's that we can buy today in the shops ...
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Postby evilboy on Mon Nov 06, 2006 4:27 pm

The dye does not make the disc!
Other stuff like reflectivity are important too.
Today cyanine has improved a lot, and is still used by Taiyo Yuden, which (still) is one of the best CD manufacturers.
TY CD-R with protected top will not be problematic.

For DVD I recommend Verbatim, or Maxell (only the Made in Japan Maxells). Taiyo Yuden (the 8x TY DVDs, not the 16x TY DVDs unless you are absolutely sure that it works well with your drives) is good as an alternative.

Just my personal recommendations.
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Re: How can I find out the DYE TYPE ?

Postby RJW on Tue Nov 07, 2006 7:48 am

osman wrote:Hi,

I’m recording videos from tapes to DVD and VCD commercially.
I need a qualified CD-R and DVD-R brand for archiving. I've read lots of things about the quality. As I understood, medias should be phthalocyanine or azo.

I found out the following information on net :
"Buy discs with a gold reflective layer if you're archiving. Use discs with a silver reflective layer for the best compatibility with older drives and players. "

"many manufacturers add additional coloring to disguise their cyanine CD-Rs, so the formulation of a disc cannot be determined based purely on its color. Similarly, a gold reflective layer does not guarantee use of phthalocyanine dye."


1 - Can you tell me an exact cd-r and dvd-r brand for a lifelong archiving?

No I can say that TY is in most cases good but still even TY seems to be not 100% reliable.
2 - If it is right that there are tricks to cheat the buyers about the colour, how can we understand the quality of the cd-r? Is there a way to understand it?

Yes and no. Most times coloured layers were not used for tricking customers however they can give customers the wrong idea if they only judge by the disc colour of the writable side.
3- Can we trust the softwares like "CDR Atip Reader Version 0.92"
or "CDR Media Code Identifier V1.63"

Not 100%. I have seen disc's ussing a atip code which was there fo a pthalocyanine short-strategy the disc however was a cyanine long-strategy.



Like evilboy said dye alone doesn't make a disc.
Trying to make something "foolproof" only forces nature to make a better fool.
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