50 pack Phthalocyanine (Type 9) dye cdrs 9.99

[beatinitup]

ATIP: 97m 32s 19f
Disc Manufacturer: Prodisc Technology Inc.
Assumed Dye type: Phthalocyanine (Type 9)
Media type: CD-Recordable
Recording Speeds: min. unknown - max. unknown
nominal Capacity: 654.49MB (74m 30s 00f / LBA: 335100)

I know this deal was already posted on these cdrs at compusa, but no one stated that they were Phthalocyanine dye cdrs. I thought the cdrs were going to be typical POS ritek cdrs with the green dye, but i went to the B&M compusa today and opened a pack. I almost craped in my pants when i saw that the bottom of the cdrs were silver. So i bought 3 packs, and my friend bought two. They also come with 5 dollars rebates if you expect to get that back. I just wanted to let people know that these are high quality Silver/Silver Phthalocyanine dye cdrs.
You cant get any better than Phthalocyanine, and by the way unlike the Ritek cdrs these cdrs have a scratch proof coat on the top.

 

[T2T III]

Yeah, but this deal ended yesterday. CompUSA's current promotion is for a 100 pack of CDRs for $19.99 (after a $20 Mail-in Rebate).

 

[rigmah]

A bit OT but what do you think about princo cdrs? Theyre Phthalocyanine dye but its type 8. Whats the difference between type 8 and 9?

 

[beatinitup]

Well from all my research i've learned that most cdr manufacters have more than one source of where their cdrs come from. So when i go shopping i dont look at the manufactuers name anymore, i look for the dye, i can look at they dye and tell what kind of dye it is. I can smell cdrs that were made by ritek from a mile away. The two most important things to me are this, the top coat: if it doesn't have a scratch proof layer then its pretty much useless unless you handle with very very good care. Second thing of course is the dye color. So to answer your question there isnt much of a difference between type 8 and type 9 besides the slightest difference in the tint of the dye, And if princo cdrs use Phthalocyanine and have a scracth resistant coat then they are fine in my book. I have a plextor. =)

One more thing, Most people get coasters from buffer under runs, i could burn a pack of 50 ritek cdrs with no coasters. Does that make the cdrs any good? no. You rarely get coasters from bad media unless its straight up P.O.S media. So i wouldnt judge cdrs on how they burn, but on how well they last.

 

[darkfyre]

hey, just want to comment on your remarks about "silver on silver".
Silver on silver is what people usually say when the top of the cd is silver, and the bottom of the cd appears silver. That doesnt really tell you anything, however. The top of the cd (the part you label the cd on) can be any color, but unless the manufacturer went to special pains to color it differently, it will usually be the same color as the reflective layer, which contributes to, but doesnt necessarily determine, the appearance of the color on the disk's underside.

Two things contribute to a cd's "color": the color of the dye, and the color of the reflective layer. Now, since both elements can come in a wide range of colors, it is often useless to try to determine the composition of a cd based merely on the visible underside color. A "green" disk might actually be a phthalocyanine disk with a green reflective layer.

Also, when you see a silver bottom, however, I think it *is* safe to say that it's phthalocyanine, because in that case you would have a silver reflective layer with a clear phthalocyanine dye. I'm pretty sure the pthalocyanine is the only colorless dye out there, so since no other combination would produce a visible silver, then it must be pthalocyanine with a silver reflective layer.

by the way, the best combination is a gold reflective layer with the colorless pthalocyanine dye. I have no idea what the differences between the various type #s of phthalocyanine are, but I am inclined to think that they are functionally the same.

Last, these disks dont really have a scratch proof layer per se... its just that the reflective layer has a matte coating on top to making writing easier. This matte/reflective combination is a little better than no matte coating at all (which is where the top of the cd is just silverish and it looks similar to the bottom), but it's still not nearly as good as a true protective coating, such as that found on kodak disks. Kodak disks have a separate protective layer from the reflective layer, and its very durable. You can see the difference between these discs by taking an exacto knife and peeling away the surface. the reflective layers of cds without protective layers (which is most cds) are frighteningly easy to peel.

okay, just wanted to contribute to everyone's awareness of cd-rs... i tend to do this whenever a cd-r thread comes up, because there are always people with misconceptions out there in need of information... hope this helps, anyway....

 

[Vpham97]

darkfyre
Thanks for your contribution.
It was very informative

 

[Heifetz]

The Kingstons 12x that I got from Outpost are Phthalocynanine type 6 with gold reflective layer. The 8x that I got a while back are Cyanine Type 0. So a pretty big difference. Don't know if all the 12x are like this, but seems premium quality to me!


Heifetz

 

[zaad]

I just id'ed two different batches of these CompUSA bulk silver CD-R's. I guess it would make sense why they would do this, but I no longer think it's safe to assume that you'll be getting a particular manufacturer.

ATIP: 97m 27s 28f
Disc Manufacturer: Princo Co.
Assumed Dye type: Phthalocyanine (Type 8)
Media type: CD-Recordable
Recording Speeds: min. unknown - max. unknown
nominal Capacity: 657.42MB (74m 50s 01f / LBA: 336601)

ATIP: 97m 31s 01f
Disc Manufacturer: Ritek Co.
Assumed Dye type: Cyanine (Type 1)
Media type: CD-Recordable
Recording Speeds: min. unknown - max. unknown
nominal Capacity: 656.69MB (74m 45s 00f / LBA: 336225)

 

[beatinitup]

i guess your luck might vary, i went ahead and bought 4 more packs today, all were Phthalocyanine, by the way my first post was at 6 am and i said they were silver on silver, it was later or early? hehe but when i looked at them they are silver(top)/Gold (bottom)

 

[Zap]

Phthalocyanine dye discs are what my really picky Ford in-dash CD player likes. I've found that discs that use Cyanine dye to not work at all in my car player. I've been using ProDisc (both "CompUSA" and "Best Value" branded) and Princo ("Disc" branded, also completely unbranded) Phthalocyanine dye discs with good success in my car. I will buy Cyanine discs if cheap, and use them for data. BTW, I got those free CDR discs from Adaptec (took them about 3 months) and those were Mitsui branded (and CDRIdentified as Mitsui) Phthalocyanine dye discs. Gotta try those next in my car... my bet is that they'll work.

As for the "color" that my eye sees on the bottom of the disc, most are light-blue, though some of the unbranded Princo stuff was greenish (probably blue reflected off gold top). The really silver stuff as well as the dark blue stuff doesn't work in my car, and all those that I've tested are Cyanine.

I usually don't have a problem with the top of my discs scratching, but a friend of mine has a huge problem with this... probably 1/10 of his start flaking off on top of the discs. Dunno, we buy the same stuff... guess I take better care of my discs (about 1/100 or less flake/scratch).

As for cheap crappy discs, I got some once from Fry's B&M (hehe, that's redundant) that were unlabeled and in jewel cases, sticker on shrink wrap said something like "Good Buy" or something. Those had problems burning. Had to slow my drive down to 2x or 1x ONLY with those discs.

 

[Zap]

I found out some more information about CDR media dye and burning/reading.

Cyanine uses "long pulse" and Phthalocyanine uses "short pulse." I think this means that Phthalocyanine dye makes the burner use shorter pulses of the laser, making larger gaps between the burned "pits," leading to easier reading by picky music CD players.

Can anyone shed anymore light on this issue? Am I right? Am I wrong?

 

[beatinitup]

zap your absolutely correct, that explains why "cheap" head units cant read cdrs with "dark" dye. Same thing with playstations, dont try to burn your back ups with cdrs that have Cyanine with the dark blue color to it.

 

[crzyc]

i bought some 12x kingstons from outpost.com, they say cyanie but im hoping they are the good stuff........

 

[beatinitup]

if you bought the 8x cdrs then they are Cyanine, but if you bought the 12x those are Phthalocyanine

 

[nocarrier]

What software you guys using to test the cdr media in detail?

example:
ATIP: 97m 32s 19f
Disc Manufacturer: Prodisc Technology Inc.
Assumed Dye type: Phthalocyanine (Type 9)
Media type: CD-Recordable
Recording Speeds: min. unknown - max. unknown
nominal Capacity: 654.49MB (74m 30s 00f / LBA: 335100)

 

[beatinitup]

i use cdr identifier, you can get it from www.cdmediaworld.com
It's freeware, also if you have a plextor, the plexmanager software can also tell you the type of dye your using

 

[stonythug]

Anyone know what type of dye Imation uses? There's a deal for 50 pack spindle and 25 cases for 19.99 at onvia.com. I tried looking on the imation website and look at it's lame remark.


Question: Why are different colors used on various
manufacturer?s CD-R discs?

Answer: There are three different organic dyes used in the
manufacture of CD-R discs. Some have a greenish color, cyanine
dye. Others have a gold color, phthalocyanine dye, or blue, azo
dye. Various industry tests show relatively little difference
between the three dyes as the discs are used in various
applications. The dyes are virtually indistinguishable from an
optical recording standpoint. The Orange Book does not
specifically refer to the dyes used; but defines the physical and
performance parameters defined for the recording layer. The
Imation disc meets or exceeds all of these specifications.

This makes me think they use a lower quality because if they used the good stuff they'd probably brag about it rather than say there's no difference. Thanks for anyones opinion.

Thread with imation deal

Link to Imation CD-Rs at Onvia

 

[Zap]

That info from Imation may be right about "The dyes are virtually indistinguishable from an optical recording standpoint." Though the way drives write to discs depend on the dye, they all write to pretty much all discs (with minor variances). Note that it doesn't mention about how a dye _reads_. Now, they may all read the same, but if the data was recorded differently using different pulse lengths, then there lies a possibility that the short pulse Phthalocyanine reads better because of the pulse length, regardless of the dye itself.

Still, the end result is that Phthalocyanine discs read in my car player while Cyanine discs do not. Also, an old portable player of mine is the same way (though not as bad). I've also noticed really old, non-multiread CD-ROM drives are picky about the type of disc it reads, but I haven't paid attention to which dye is used in those cases.

One last thought... wasn't Mitsui one of the originators of CDR media? Mitsui uses Phthalocyanine.

 

[billandopus]

Mitsui pioneered one of the dye types. Probably the Phythalocine ...