Re: HIE in Bronica 135W film Backs

[Otto Giesenfeld <otto.giesenfeld@xxxxxxxxxxxx>]

--On den 22 juli 1999, 13:22 +0100 Willem-Jan Markerink
<w.j.markerink@xxxxx> wrote:

> On 21 Jul 99 at 16:33, Bob & Jennifer wrote:
> Most likely not....it might be the same type of felt as used in 35mm 
> cartridges, but I have never heard any proof that the dark-slide slot 
> also leaks IR. Either the felt is different, or the tightness is much 
> larger.
> 

Is it the felt that leaks light into HIE cartridges? If so, it would seem
easy for Kodak to replace it with some more effective kind of felt. I kind
of thought that, instead, it was the lack of anti-halation layer in the
film that was the culprit. (Making the film act as an optical fibre and
lead light into the cartridge.) Is there a well-established knowledge
(outside Kodak) on why HIE has to be loaded in darkness?

Best regards,

Otto Giesenfeld
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