Digital BW, The Print

I'm surprised that anyone should ever consider long term storage of CDs 
in jewel cases, any more than most of us used to store slides in those 
plastic boxes in which they came back from processing.

Peter

Peter Marshall    -    Photographer, Writer: NUJ
petermarshall@...       +44 (0)1784 456474
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>Re:PHOTO                     http://re-photo.co.uk
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Mark Rogers wrote:
> Jonathan S. Farley, Senior Conservator at Royal Botanic Gardens did
> comprehensive study of Bell Labs "Corrosion Intercept"
> technology as used to protect CD/DVD's:
>
> CD_Instert_Report
> <http://www.conservation-by-design.co.uk/corrosioninterceptpdfs/CD-Inser\
> tfinalreport.pdf>
>
> His findings about CD Jewel Cases were interesting. Here is a quote from
> page 17 in the conclusion:
>
> "The most deleterious factor in the CD's environment which will
> contribute to its decay is the Jewel Case in which it is supplied. Acid
> off gassing as a result of poorly chosen materials in the products'
> packaging can reduce the longevity of a CD to decades rather than the
> centuries predicted by most manufacturers\ufffdAs a consequence, unless
> Jewel Cases undergo a radical redesign, the presence of deleterious
> plasticizers will be continued requirement, and a continued threat to
> the longevity of CDs. Not one commercial CD manufacturer will admit
> publicly that their CDs are manufactured from decayable materials which
> can be affected from deleterious factors in their immediate environment.
> As a consequence of this, many packaging manufacturers pay little, or no
> attention to their choice of materials."
>
> My company resells CD/DVD protective storage cases and jewel case
> inserts and we have a sale on them going on right now for 15% off via
> discount code: FDPSAC7
>
> Cheers, Mark
> http://www.pbase.com/lila161 <http://www.pbase.com/lila161>
> http://www.framedestination.com/ <http://www.framedestination.com/>
>
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "David"
> <dkfreed@...> wrote:
>   
>> The degredation of CD/DVD media has been known for a while. There are
>> archival quality gold reflective layer CDs and DVDs that you can use.
>> According to manufacturers, they will last up to 200 years.
>>
>> The life span of regular CDs and DVDs (like you buy cheap at Staples)
>> are much less -- I've heard 50 years on the high end, but down to 5-
>> 10 years on the low.
>>
>> The only thing is, in 75-100 years will there be the hardware around
>> to read these disks, or will it be like Beta video tapes and 5 inch
>> floppies.
>>
>> Best, David
>>
>>
>>
>> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Richard
>> Smallfield r.smallfield@ wrote:
>>
>>     
>>> Good thing it wasn't written on a CD-R.
>>>
>>> So silver negatives are a good thing to have.
>>>
>>> Food for thought,
>>> Richard
>>>
>>>       
>
>
>
>
> [Non-text portions of this message have been removed]
>
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