One of the possibilities mentioned was to re-wrap the paper in
'Rubylith" so the security folks could see without opening it up and
ruining the paper.
For those younger than Methuselah, "Rubylith" is a transparent red
film used in lithography that effectively blocks out light. It used
to be used in laying out print material to leave room for things to
be added later, such as images, etc.
So, unfortunately, it won't work with modern B&W print
materials. These materials, especially the variable contrast ones,
are sensitive to both red and blue light ( that's how the variable
contrast thing works ) so although the blue light will be blocked
quite nicely with the Rubylith film, the red will merrily go right on
through and expose the paper and ruin it.
Even if one could find a transparent film of the same properties of a
darkroom OC filter ( which one can use with these papers ), they too
would fail under the intensity of light prevalent. They are only
useful when the actual light level is quite low. - leave the paper
out for an hour or so and it will fog anyway.
Sigh, wish I had a really good solution to the problem,
James
James Schenken
