I've definitely visited that website, thanks. I can't make the materials so I'm proposing a simpler method.
And I think that Louis Ducos didn't do exactly what I'm proposing, despite what I said. (I got excited)
He basically did a tri-color carbon print. But what stains did he use?
To make this work, you couldn't wash away the soluble gelatin as in a normal carbon print, at least I don't think. You need it to remain and become the "sponge" for the ink. The tanned/hardened portions react differently than the soluble portions. One could soak the matrix in water; the soluble portions would imbibe water and then an oily ink would resist this and thus stay in the tanned. Alternatively, a water based dye would do the opposite. Depending on whether you make separation negatives or positives, either method could form a true-color image.
Something to think about... I know I am!
Last edited by holmburgers; 10-29-2010 at 11:36 AM. Click to view previous post history.