Re: 4-color carbon question
s carl king (firstname.lastname@example.org)
Sat, 9 Dec 1995 10:32:26 -0500 (EST)
> >> I am working in 4-color carbon and am having trouble with the black (final
> >> transfer of a "single transfer" process) adhering to the magenta,
> >> particularly in the maximum density areas. It starts to wash off in clumps
> >> about half way through the washout. I can stop it by cutting the wash
> >> short. Is the gelatin of the black swelling too much, or is the Dmax
> >> magenta inhibiting adhesion?
> Material used: Polaroid material (manufactured for Archival Color, Charlie
> Berger's original company).
I have not used the Archival materials but my guess is you have already
identified the problem, that is, there is a lack of adhesion between the
CYM image and the black relief, caused by the black relief swelling
too much, prehaps from having absorbed too much water during transfer.
I suggest this based on the presumption that the black tissue and CYM
image are soaked before mating/registration. If this is the case, reduce
try reducing the soak time, or perhaps lower the temperature of the
water. Also, have you thought of developing the reliefs separately
and visually register onto the final support?