U of S | Mailing List Archive | alt-photo-process-l | Re: again on color absorption

Re: again on color absorption

Katharine, IIRC, the portion below the dashed line (pure color) would be
less colored ink(s) + more black ink (due to less lightness/brightness -
depending which test pattern is used) as you progress more to bottom. So,
my understanding of Alberto's test would be that black ink isn't as opaque
to the specific light which that specific process requires as some other
colored inks, that's why there's reintroduction of tone. This is something
I experienced with Epson 890/1290 OEM dye-based inks and HP9180
pigment-based inks.

11 Mayıs 2009, Pazartesi, 7:08 pm tarihinde, Katharine Thayer yazmış:
> Alberto, I'm curious how you woud interpret the reintroduction of
> tone below white in this print.  I know that in gum, there is a wide
> difference of opinion about what causes that, when it occurs; I
> wonder if there's a more straightforward explanation in metal processes.
> ...