From: Kate Mahoney (kateb@paradise.net.nz)
Date: 09/05/03-03:22:37 PM Z
----- Original Message -----
From: "Ryuji Suzuki" <rs@silvergrain.org>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Saturday, September 06, 2003 8:59 AM
Subject: Re: coating method
> From: David Foy <dfoy@marketactics.com>
> Subject: RE: coating method
> Date: Fri, 05 Sep 2003 08:10:45 -0600
>
> > She said "(I'm using) dry plates that have been coated with a
> > gelatine/chrome alum mix
> > previously." I guess my real question was, would it be worthwhile for
Kate
> > to try different subbing materials? Or is her problem with lifting most
> > likely unrelated to subbing?
>
> I assume the lifting occurs between glass and the plain gelatin
> layer. If this is the case, one possibility is that the gelatin is
> swelling too much (alum hardening is ineffective). This swelling
> should be reduced if the gelatin is hardened adequately, with an
> aldehyde hardening agent.
No, I think the lifting is the emulsion layer as there seems to always be
hardened sub left on the plates.
>
> Why do you ask? Are you collaborating with Kate or doing the samething
> independently?
> --
> Ryuji Suzuki
> "Reality has always had too many heads." (Bob Dylan, Cold Irons Bound,
1997)
>
>
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