Re: Paperkey 1.3 // very durable but often overlooked backup medium

[vedaal]

On Tuesday, January 08, 2013 at 2:13 PM, "Avi"  wrote:
>
>These sites may prove interesting:
>
><
>http://www.familyarchives.com/pages/documents-how-to-preserve-your-
>documents.html
>>
>maintenance/index.html>
>


Excellent !

Thanks!

vedaal


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Re: Paperkey 1.3 // very durable but often overlooked backup medium

[Avi]

These sites may prove interesting:

<
http://www.familyarchives.com/pages/documents-how-to-preserve-your-documents.html
>



This book, perhaps:


--Avi


User:Avraham

pub 3072D/F80E29F9 1/30/2009 Avi (Wikimedia-related key) 
   Primary key fingerprint: 167C 063F 7981 A1F6 71EC ABAA 0D62 B019 F80E
29F9


On Tue, Jan 8, 2013 at 12:49 PM,  wrote:

> Archival Paper Backup
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Paperkey 1.3 // very durable but often overlooked backup medium

[vedaal]

Back in the shrouded mists of time, in the last millenium, before digital media 
were widely accessible, 
many libraries and archives used to back up data on microfiche.
Many of them had built in printers, so that 'text' data could be retrieved, 
printed out, 
(and then, as the technology became widely available), scanned into digital 
format.

http://www.wisegeek.org/what-is-microfiche.htm

The above article gives the following interesting (?overly optimistic?) 
durability estimate:

=[ begin quote ]=

The polyester material on which the images are printed is also very stable and, 
if kept in a temperature controlled environment, is estimated to last as long 
as 500 years.
 CD-ROMs are estimated to last for about 75 - 100 years, 
depending on the materials they are made of and how they are stored.

=[ end quote ]=

(as an old darkroom B&W hobbyist, I remember specific instructions on how to 
prepare prints for 'Archival Quality' 
[adjust development time so that the print could tolerate 2 minutes in a fixer 
tray without overly darkening],
this produced an estimate then of 75 year durability.)

Preserving only monochrome text probably has much greater durability.

Anyone come across specific recommendations for paper, printer, and storage 
recommendations for 'Archival Paper Backup'  ?


TIA

vedaal


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