From: Kate Mahoney (kateb@paradise.net.nz)
Date: 09/06/03-12:03:24 AM Z
----- Original Message -----
From: "Ryuji Suzuki" <rs@silvergrain.org>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Saturday, September 06, 2003 4:02 PM
Subject: Re: coating method
> From: Kate Mahoney <kateb@paradise.net.nz>
> Subject: Re: coating method
> Date: Sat, 06 Sep 2003 09:22:37 +1200
>
> > No, I think the lifting is the emulsion layer as there seems to always
be
> > hardened sub left on the plates.
>
> Ok, then the rest is easy (procedure-wise, same as what I already
> said). Harden the emulsion. If the emulsion coat has less tendency to
> swell (and thus expand) then it's less likely to lift.
>
> I don't know what gelatin you use for subbing, but silver gelatin
> emulsion is basically gelatin dispersion like your subbing material
> from mechanical strength viewpoint. So, if you adjust the hardening
> and plasticity just right, I don't think subbing is necessary.
>
> I don't think alum is a good hardener to use for emulsion, though, and
> I know glutaraldehyde works because that's what I use.
Yes, I know there is a reason why alum is NOT recommended, but it escapes me
for the moment. I would love to quite subbing as it is tedious!
>
>
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