U of S | Mailing List Archive | alt-photo-process-l | Re: Types of Gum? Dyes instead of pigments?

Re: Types of Gum? Dyes instead of pigments?

This chap is experimenting to see whether the plant dyes used in anthotypes
are reasonably permanent.

Don Sweet

----- Original Message ----- 
From: "Christina Z. Anderson" <zphoto@montana.net>
To: <alt-photo-process-l@usask.ca>
Sent: Wednesday, October 17, 2007 2:40 AM
Subject: Re: Types of Gum? Dyes instead of pigments?

> Nope, and nope, Jacek.
> However, there are a number on this list doing Temperaprint, or using
> gloy...and, of course, gelatin as in carbon printing.  Also albumen.
> I don't know why plant dyes wouldn't work if they could be suspended in
> gum, but you'd want to worry about archival colors.  Could you test it and
> tell us what happens?
> Chris
> ----- Original Message ----- 
> From: "Jacek" <gonsaj@iinet.net.au>
> To: <alt-photo-process-l@usask.ca>
> Sent: Sunday, October 14, 2007 9:13 PM
> Subject: Types of Gum? Dyes instead of pigments?
> > Hi all,
> >
> > I was wondering if anyone used another form of a binder in Gum
> > printing. Most of the sources I've read have all used Gum Arabic, though
> > there are many other that exist Gum tragacanth,Guar Gum, Locust Bean
> > Tara Gum, Xanthan Gum etc.
> > Perhaps a different gum might hold more pigment or give another
> > result?
> >
> > Other than using watercolour pigments, has anyone tried using dyes? I
> > presume that a pigment is a insoluble powder, when using gum and
> > to light the pigment is trapped, where a dye used perhaps the gum can't
> > trap the soluble liquid? Though is it possible to take a dye and make it
> > into a pigment? Silly question perhaps? :) I had this idea to use plant
> > dyes for my colours, wondering if its feasible or not?
> >
> > Cheers
> > Jacek
> >