Any colloid? I don't know about gum (have my doubts) but with gelatin as
when you use the carbon (single) transfer when the exposed pigment tissue
is transferred onto fairly recently made and formalin hardened sized paper,
then you are looking for trouble indeed. Your normaly exposed tissue can
suddenly appear way overexposed.
Luis Nadeau
>solution coated on it, regardless of how you mix the gum or anything else.
>This is from personal experience. (Formaldehyde insulation in your walls
>can harden the gummed library tape you use for framing - a little goes a
>long way in doing damage)
>
>Judy is right about Rives being the only paper that can be gum printed
>without sizing. I use the white kind of Rives Heavyweight.
>
>Sam
>
>
>Sam Wang e-mail: stmwang@hubcap.clemson.edu
>Art Dept - Clemson University voice: 803/656-3924
>Lee Hall, Clemson, SC 29634 FAX: 803/656-0204