"J. M." wrote: > Hi Janet, > > > the issue of solvents in the paint possibly soaking > > thru the label and loosening the vapor deposited > > foil reflective layer on the pitting occurred to me, > > too. this is why I originally speculated that we > > need some kind of clear vinyl donut shaped labels > > just like the present paper gummed labels sold as > > kits for labeling cd's your burn yourself. > <SNIP> > > > Including reacting to certain types of lacquers (not > all types of lacquers, though, evidently). > > If I'm not mistaken, I believe I read once that at > least some brands of CD-R have a *lacquer* top-coat. >
According to this website some CDs structure's top coat (perhaps all) have lacquer. http://www.disctronics.co.uk/technology/cdbasics/cd_specs.htm of course I agree that lacquers can be different from each other, still lacquer to me is just paint, plain and simple, not enough reliability for my precious backups. Oh don't rely on label sometimes a CD can only bring tiny letters around (in a circle) and nothing more. CDRs are worst. > Anyway, it's not outside the realm of possibility that > certain adhesives could have their *own* issues as far > as damage to certain plastics, or slowly releasing > solvents that could damage stuff. (I wonder about that > rubber-cement smell of certain adhesives - if my > insensitive nose can *smell* it, then there must be > *some* of its molecules floating around, being > released into the air/surfaces/whatever, right? Maybe? > Couldn't that react to other things, possibly? Definitely, there is a warning on most CDs about using abrasive stuff, it does damage the CD, so when you're cleaning the house you better not spray one by accident (if you do use cool water immediately)! > I would be concerned, with CD-R (speculation follows), > that any possible adhesive/glue *shrinkage* that may > occur over the course of time as the adhesive ages, or > maybe tiny (barely visible with naked eye) *air > bubbles* that get trapped between the label and CD-R > surface at the time of application, could later > conceivably cause the fragile underlying layer to > weaken, or start the process of having it simply peel > off in places, taking the fragile layers with it. Very possible. > > Of course my concerns would be for archival stuff; one > probably wouldn't notice any affects one way or the > other for short-term storage (a couple years or > whatever). > > I realize that zillions of people already use stick-on > labels, and I haven't heard on the evening news ;) > anything about "adhesives damage CD-R", so maybe it's > nothing to worry about. > > I would like to see the manufacturers figure out a way > to address some of these concerns, during the > manufacturing process. Apparently not enough CD-R > users are concerned about it, yet, though. I know I am. And apparently most people are as well but I was the only one that originally yelled "help". > > I agree that some supplemental protection would be > welcomed by some people including me, if it would be > proven safe, but meanwhile I just try to keep the > discs stored safely and make sure they don't get any > abuse (zero-tolerance there, so to speak). Some brands > of media seem susceptible to bending-related damage, > as well (I guess it must somehow weaken the shiny > layer, especially if there's already scratches there). > For lugging stuff around in pack/purse/whatever, I > don't use the new "thin" (half-thickness) CD > jewel-cases which offer very little protection against > bending (although they work very nicely for home > storage), but rather just use the old-style thick > jewel cases, or sometimes one of those metal-clad > sleeve gizmos Not as easy as it sounds or sometimes not enough, I've had CDs get scratched by just removing them or putting them back in the case, the case has somehow [not sharp but] brute edges (specially when they slide off the middle part if it is broken [very common]), the cases that AOL uses seem to be safer (the ones that look like are for DVDs). One of my collectible Shari Lewis' Lamb Chop CD developed a tiny (see through) dot for which two tracks skip. After I always treated it like it was made of fine crystal. Always from the jewel case to the player & vice-versa. To save the data I had to convert it to MP3s in my 8500, after a few tries it worked. I've got to say the origianl CD is only going to get worse unless I leave it untouched forever. > > -Jamie Marie > Sorry to say this Jamie but the original thread was declared dead about a week ago because of some guys who made a comment about politics, not very fare for other people in the list considering there was only two posters out of the possibly hundreds. A warning would have been better. Life is not fair I've got to say. Liliana -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
