Re: Hand collotype in process

[Tom Sobota <tom@sobota.net>]

Phritz,

"collotype" is called "lichtdrück" in German, so you could search in the 
net for that word.

There is a guy in Düsseldorf doing collotype: 
http://www.art-info.com/duesseld/voigt/edition/ldruck/lidru01.sht

Also, this atelier in Dresden: http://www.lichtdruckwerkstatt.de/

and this one in Leipzig: http://www.lichtdruck.de/

If you live near one of them, you could ask for a visit to their 
installations.

regards
Tom Sobota
Madrid, Spain

phritz-phantom@web.de wrote:
> (answering my own question...)
> no, one could not, because dried gelatin will pop right off the galvanized steel.
> so, adherence of the dry emulsion is a criterium limiting the choice of support. 
>
>
>   
> > -----Ursprüngliche Nachricht-----
> > Von: <phritz-phantom@web.de>
> > Gesendet: 18.06.09 04:38:46
> > An: alt-photo-process-l@usask.ca
> > Betreff: Re: Hand collotype in process
> >     
>
>   
> > thanks,
> > i just did, but didn't really find anything on coating (i'm operating on high school french too). 
> > i found this on the other site: 
> > http://perso.numericable.fr/bquantin/web_phototypie/diapo_phototypie/1_preparation_dalle/1_preparation_dalle_fichiers/Slide0007.gif
> > it seems they use some kind of support for the emulsion. 
> > on the phototypie site, it says that copper once was used instead of glass. but it's not used anymore,  "for various reasons" and "the biggest one being the price". 
> > so, if one can use copper instead of glass, one could probably use a cheap sheet of galvanized steel too and use the good old magnetic sign material for a coating frame... 
> >
> >
> >
> >
> >     
> > > -----Ursprüngliche Nachricht-----
> > > Von: "Jack Brubaker" <jack@jackbrubaker.com>
> > > Gesendet: 18.06.09 03:34:33
> > > An: alt-photo-process-l@usask.ca
> > > Betreff: Re: Hand collotype in process
> > >       
> >     
> > > On Wed, Jun 17, 2009 at 8:28 PM, <phritz-phantom@web.de> wrote:
> > >       
> > > >  and how do you people coat emulsions on glass plates? freehand with a comb (rather thin coating) or with some kind of frame.
> > > >         
> > > Look at the link Tom posted:  http://www.phototypie.net
> > > Even with failed high school French from half a century ago I figured
> > > out a lot by going through the long set of photos and discription on
> > > the site. My question, is why do they use glass? A less fragile sub
> > > would seem a lot less trouble. Is there something about glass that
> > > creates a better bond or do they flash it from the back to help bond
> > > it? It seems that a metal plate could be grained the same way just as
> > > zinc plates are for lithography.
> > >
> > > Jack
> > >
> > >       
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