Re: Gelatin (waterproofing)

Would diluted drying oil work? It would coat the gelatin layer and form an
film on top of the matrix. Being oil, it will repel the water-based gelatin
in later operation as well.

Dave S

----- Original Message -----
From: "Phillip Murphy" <pmurf@bellsouth.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Wednesday, December 31, 2003 12:00 PM
Subject: Re: Gelatin (waterproofing)

>
> Andrew Atkinson has created work in England using photopolymer plates.
> They are used as "masters" for creating the printing plate. Photopolymer
> molds would, like gelatin relief molds, need to become "waterproof" in
> order to use them as Woodburytype molds.
>
> Dried gelatin can withstand many tons per square inch of pressure without
> distorting as Woodbury discovered. However, this quality isn't necessary
> when you consider that a final Woodburytype print is created with very
> little pressure. Woodbury's original press consisted of two sheets of
> glass sandwiching the mold, gelatin and paper. Wearing of a hardened
> and "waterproofed" gelatin plate is not known since little information
exists
> regarding the method.
>
> Nonetheless, using "waterproofed" gelatin is the basis of the Heimsoeth
method
> which was patented around the turn of the century as Andrew Atkinson
discovered.
>
> This would be a German patent issued around 1900 for Heimsoeth & Co.
> Would anyone on the list know of or have a copy of this Patent?
>
> all the best,
>
> Phillip
>
> Dave S wrote:
>
> > If you are thinking about hardening and waterproofing the gelatin to be
used
> > as the mold, I think the gelatin might not have enough strength for that
> > even after it is waterproven.
> >
> > There is a patent about using modern material for doing Woodburytype. I
read
> > it a few years ago but I forgot the title. You could probably do a
search on
> > woodburytype and find something.
> >
> > I think photopolymer (either liquid or pre-manufactured plates) can be
made
> > to work as mold of Woodburytype. It's worth experimenting, but that's
just
> > my "feeling."
> >
> > Dave S
> >
> > ----- Original Message -----
> > From: "Phillip Murphy" <pmurf@bellsouth.net>
> > To: <alt-photo-process-l@sask.usask.ca>
> > Sent: Wednesday, December 31, 2003 10:41 AM
> > Subject: Re: Gelatin (waterproofing)
> >
> > > Hi Gary,
> > >
> > > I'm investigating the potential of a couple of methods of
> > > creating Woodburytype plates for casting pigment images.
> > > One is the Stannotype process that was invented by Woodbury,
> > > and the other is the Heimsoeth method which came later.
> > >
> > > best regards,
> > >
> > > Phillip
> > >
> > >
> > > Gary Nored wrote:
> > >
> > > > On 21 Dec 2003, at 7:51, Phillip Murphy wrote:
> > > >
> > > > > Is it possible to prevent a dried gelatin layer from taking up
> > > > > moisture from the atmosphere? Is it possible to prevent
> > > > > water in contact with the layer from swelling the gelatin?
> > > > > (In essence, waterproofing the gelatin)
> > > > >
> > > > Hi Phillip,
> > > >
> > > > I don't mean to pry, but Im so curious! Why do you want to do this?
> > > > Are you seeking a conservation measure? Or, even better, do you
> > > > have some exquisite new gelatin process in the works?
> > > >
> > > > Regards,
> > > > Gary Nored
> > > > http://home.centurytel.net/Gary_Nored/
> > >
> > >
> > >
>
>
Received on Wed Dec 31 15:45:55 2003