the function of -70 for X-ray film

[Cathy Sprankle]

In article <47tnhh$qao at artemis.it.luc.edu>, "Ian A. Boussy"
<iboussy at orion.it.luc.edu> wrote:

> Actually, opening a cold cassette can also result in AMAZING artefacts
if the atmosphere is dry. You 
> will sometimes get static electricity generating sparks that can form
wonderful patterns across the 
> film!  But this is not too common; its rate of occurrence does seem to
rise, though, with the 
> importance of the autorad!

Some not so aethetically pleasing, but equally annoying, artifacts can
result if a cassette is opened while still cold in a humid atmosphere. 
Moisture from the outside of the cassette can be transferred to the film
while handling prior to developing, resulting in smudges and fingerprints
on the autorad.

-- 
Catherine Sprankle
CIIT
e-mail:  sprankle at ciit.org
Opinions expressed (such as they are!) are strictly mine and do
not reflect those of CIIT.