Re: APIS, hydroquinone hardening

Jack Brubaker wrote:
>
> Yes Katharine, that is my memory and understanding.

Glad to hear it, 'cause if it wasn't, I couldn't see how it would work.
Thanks,
kt

>
> Jack
>
> > From: Katharine Thayer <kthayer@pacifier.com>
> > Reply-To: alt-photo-process-l@skyway.usask.ca
> > Date: Wed, 13 Jul 2005 15:39:45 +0000
> > To: alt-photo-process-l@skyway.usask.ca
> > Subject: Re: APIS, hydroquinone hardening
> >
> > Jack Brubaker wrote:
> >>
> >
> >>
> >> He has made prints by a very clever "wet carbon" process where he uses this
> >> reaction to selectively solidify carbon tissue (that contains hydroquinone)
> >> still damp from coating by placing it in contact with a paper final paper
> >> support that has an exposed dichromate image (dichromate only). The
> >> unexposed and therefore unconverted dichromate bleeds into the carbon tissue
> >> and interacts with the hydroquinone to harden the gelatin.
> >
> > Interesting, so the "negative" he uses to print the image must be a
> > positive, right? (Sorry, just trying to make sure I understand this)
> > Katharine
Received on Thu Jul 14 11:04:55 2005