Re: HIE light leakage

[Michel Wurtz - LTE <mw@xxxxxxxxxxxxxxxxxxx>]

David Josephson wrote:
> 
> I've been asking around about the reason one must load IR film in
> darkness (after several reports from people who were able to do it
> in subdued light, and others saying it was impossible without
> fogging). One person told me that the reason for the requirement
> was that the light trap felt was not opaque to IR -- perhaps not
> always opaque to IR? Same should be true of 70mm cassettes, yet I
> have not had this problem. Other theories?

The most convincing theorie I've heard on this list is not related
to the light trap felt, but merely with the film itself.  There
is no anti-halo layer and the base itself acts as a light guide.

- -- 
Michel Wurtz    ENGEES - Laboratoire Territoires & Environnement
                1, quai Koch - BP 1039, F-67070 STRASBOURG cedex
                Tel: +33 03.88.25.34.62  Fax: +33 03.88.37.04.97
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