With the whole country in deep freeze I thought it appropiate to ask what is the lowest temperature that CD and DVDs can be stored without harm.
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About 50 F -- 60 F is optimal archival temps.
Dipping into the 40s is as bad as going into 80s-90s.
Humidity is actually the bigger issue, dry heat and dry cold is better than wet heat/cold.Want my help? Ask here! (not via PM!)
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I think the question is more suited to our Media Forum. Moving you.
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Also avoid extreme temperature changes because it causes stress on your disc. To be honest, discs are pretty darn resilient in a fairly wide range of temperatures. A bigger concern is sunlight.
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Also for recordable CDR, DVDR, avoid strong light. Dark storage is best.
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DVDs from Netflix survive in my mailbox for several days during summers here when the air temp reaches 117F.
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Originally Posted by redwudz
Recordable media has organic dye surfaces that degrade with heat or light.Recommends: Kiva.org - Loans that change lives.
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The recordables get fairly hot in the UPS truck when they deliver them also, but probably not above 100F. (I'm at the end of his route.) I know from long past experience that DVDs and CDs will 'pretzel up' fairly quickly in the rear window of a car, though.
I am curious about the dye on recordable DVDs. Is that only needed for burning or does it have anything or much to do with playback? -
From Wikipedia
"The writing process does not produce indentations (pits); instead, the heat permanently changes the optical properties of the dye, changing the reflectivity of those areas. Using a low laser power, so as not to further alter the dye, the disc is read back in the same way as a CD-ROM. However, the reflected light is modulated not by pits, but by the alternating regions of heated and unaltered dye."
A car interior can reach 150 degrees F or more but i haven't noticed any errors in my car mix CDRs yet. They are stored in the console though.Recommends: Kiva.org - Loans that change lives.
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Originally Posted by redwudz
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Thanks, yes it does. For some reason I was thinking the dye was more like a 'filter' for the laser beam, not the medium for writing.
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