[78-L] reliable CD-R blanks

[David Lennick]

I once sent a master disc to Alan (well packed, sealed and Fedexed) and when it 
arrived, there was a hole in the surface! No idea how that happened, and I 
don't remember what brand.

By the way, what's the general opinion on CD envelopes and the plastic window 
adhering to the disc's surface?

dl

On 12/28/2014 11:51 AM, DAVID BURNHAM wrote:
>
> One thing, (which to this group may not even need to be mentioned), is that CDRs of any manufacture to which paper labels have been affixed will almost certainly fail after about 10 years.
> db
>
>       On Sunday, December 28, 2014 9:38 AM, Alan Bunting<alanbuntinguk at yahoo.com.invalid>  wrote:
>
>
>
> Interesting that Doug mentions the Mitsui brand as being excellent.  It may be today but time will tell - about 10 years ago I bought Mitsui exclusively as they were rated the best.  Sadly I am finding that more and more of them are failing - one I needed to make a copy of last week not only wouldn't play at all, I couldn't even do an error check with Plextools and a Plextor drive.  A further check showed that 6 out of 10 sampled, although playable, had problems (and 4 of them had no C2 or CU errors at all).   Who knows what our Taiyo-Udens will be like in 10 years time although my 5 and 6 year old ones seem to be OK at the moment..Thank goodness hard drives are now so cheap that I can keep backups of everything and thus avoid such problems.
> Alan Bunting
>
> Â  Â  On Sunday, 28 December 2014, 3:22, Doug Pomeroy<audiofixer at verizon.net.invalid>  wrote:
> Â
>
>
>
> I have had good results for years recording at slow speeds (but never as slow as 1x) using Taiyo Yuden discs
> with the green Cynanine dye recording surface.  These are now being sold under the JVC/Taiyo Yuden label.
>
> CDs manufactured with Phthalocyanine dye have some advantages over those made with Cynanine dye, but
> for slow speed writing I believe the Cynanine is preferred.Â
>
> Excellent Archival Gold discs made with Phthalocyanine dye are manufactured by MAM-A/Mitsui.
>
> All brands of CD-R are widely available via dealers on the internet.  I now buy mine from http://www.mediasupply.com.
>
>> CD recordable technology is a complex and convoluted subject. There are many factors that come into play when recording a disc: the rate of spin, the formula of the dye, the ambient temperature, the internal temperature, the age of the media, the power and wavelength of the laser, the spacing and size of the marks on the media relative to the speed of the disc, to name but a very few. Media manufacturers are constantly adjusting the myriad factors of disc production, including but certainly not limited to the formula of the dye polymer. CD-R media must combine the properties of compatibility, writability, readability, and data longevity. To say that a certain dye formula or brand of media is inherently better than another based exclusively on one of these properties is not only simplistic, it is misleading.
>
>
> Doug Pomeroy
> Audio Restoration and Mastering Services
> 193 Baltic StÂ
> Brooklyn, NYÂ  11201-6173
> (718) 855-2650
> audiofixer at verizon.net
>