An article in this month's _Museums journal_ [1] contains the statement:
"According to the Public Record Office (PRO), the bright light
required for scanning can reduce a document's life by 50 to 100
years."
I had previously been guided by a well-documented research report by
Timothy Vitale [2], whose conclusions start:
"The claims made by some experts on the intensity of flatbed scans
are overstated. Most scans will be from 1-15 lx-hrs, which is a
minuscule fraction of the useful life of a document or artwork."
Can anyone resolve the apparent inconsistency of these two statements?
[1] "What the papers don't say" by Toby Butler. _Museums journal_,
vol.100, no.10, October 2000, p.14-15.
[2] "Light levels used in modern flatbed scanners" by Timothy Vitale.
_RLG DigiNews_, vol.2, no.5, 15th October 1998.
<http://www.rlg.org/preserv/diginews/diginews2-5.html#technical>
Leonard Will
--
Willpower Information (Partners: Dr Leonard D Will, Sheena E Will)
Information Management Consultants Tel: +44 (0)20 8372 0092
27 Calshot Way, Enfield, Middlesex EN2 7BQ, UK. Fax: +44 (0)20 8372 0094
[log in to unmask] [log in to unmask]
---------------- <URL:http://www.willpowerinfo.co.uk/> -----------------
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|