U of S | Mailing List Archive | alt-photo-process-l | RE: Attaching film in holders

RE: Attaching film in holders

Just to add another factoid about this phenomena, quite a few years ago there was an article describing this in Scientific American Amateur Scientist column; which if you can find it is worth reading.


Don Bryant



From: rwybeaker@hotmail.com [mailto:rwybeaker@hotmail.com] On Behalf Of Robert Young
Sent: Wednesday, April 16, 2008 5:49 PM
To: alt-photo-process-l@usask.ca
Subject: RE: Attaching film in holders


> >
> It seems to me that there was a similar problem with
> Technical Pan which was also on a thinner than usual base.
> The recommendation was to use a sheet of thin, black,
> "kraft" paper under the film. That serves to put the film in
> the exact focal plane and to hold it against the rails of
> the holder. Normal sheet film in on 0.007" base.
> I also agree that a couple of dots of double-stick tape
> may help. About light from the adhesive: not all adhesives
> produce light when stressed. You can check this by simply
> peeling a little of whatever you intend to use in a dark
> room. Curiously, the tape used to stick roll film to its
> paper backing produces light when peeled. Triboelectricity I
> think.

Yes, it is called the "triboelectric" effect.

You can also get quite a light show crunching wintergreen lifesavers in the dark for the same reason.