Richard Sullivan (richsul@earthlink.net)
Tue, 11 May 1999 14:03:31 -0600
Sam,
That system sounds neat.
I haven't had time to try out this theory of the PVA dichromate dye system
so I thought maybe someone here on the list might want a project. I suspect
that it has already been done but who knows, maybe not.
My theory says:
PVA is known to absorb dyes. If a layer of PVA was put on Mylar and was
then dichromated dried and exposed, the exposed areas would harden and be
less absorptive. When exposed piece was soaked in a dye, the hardened areas
would absorb less dye thus producing an image. I suspect doing it on paper
would be difficult if not impossible since the paper would absorb the dye
as well so a Mylar base instead of paper would be in order.
Downside: dyes are not as permanent as pigments though the blacks and
browns are fairly permanent.
Upside: As permanent as dye transfer, brilliant colors and no "hard top
soft bottom" problem of colloid pigment processes.
Upside II: We can recycle old phono turntables by turning them into spin
coaters.
--Dick Sullivan
At 12:09 PM 5/11/99 -0400, you wrote:
>Dick,
>
>Not exactly, but I have used Elmer's School Glue with dichromate and
>pigment. Development is encouraged by the use of alcohol. I was under the
>impression that the result is a polyvinyl alcohol print. The one I made on
>a T-shirt underwent numerous washing till the shirt fell apart, and yes,
>the image was intack.
>
>Sam
>
> >I was recently reading the new bio of Edwin Land. Besides learning that the
> >family name was Salomonovitch and it was thought that his father mistook
> >the immigration officials saying "You are now landed" as the source of the
> >family name there was a couple of other tidbits that look like areas for
> >exploration. Perhaps someone has already exploited this function. 3M Color
> >key perhaps???
> >
> >1. Polyvinyl alcohol absorbs dye. The early base for Land's polarizing film.
> >2. Polyvinyl alcohol hardens in light like gum if dichromated.
> >
> >Coat PVA on plastic sheets. Dichromate. Expose and then dye the sheet.
> >
> >Just thought I'd pass it on.
> >
> >Hmmm. It could have been the Polaroid Salomonovitch Camera.
> >
> >--Dick Sullivan
> >
> >
> >
> >
> >
> >
> >505-474-0890 FAX 505-474-2857
> ><http://www.bostick-sullivan.com>http://www.bostick-sullivan.com
> >http://www.workingpictures.com
505-474-0890 FAX 505-474-2857
<http://www.bostick-sullivan.com>http://www.bostick-sullivan.com
http://www.workingpictures.com
This archive was generated by hypermail 2.0b3 on Thu Oct 28 1999 - 21:39:32