I should have replied earlier about the green bottle sumie ink but I was too
busy working on a project that required me to stay awake for 50 hours. I do
Chinese brush painting, but most brush painters don't use the green bottle
sumie ink at all because it is considered poor student grade. I don't know
about its use in alt. processes. I am not doubting the quality of the black
pigment because those are easy to obtain and are relatively inexpensive.
However, the quality control might be an issue, so the concentration from
bottle to bottle might not be consistent.
>> The other question is because now I'm totally confused about to harden or
not to harden. Sandy says (if I understand him correctly) no never, Klaus
says he uses Glyoxal... or is that just to harden the gelatine on the
receiving sheets?
>>
I have been following the thread, so I think I know what they were talking
about. Basically, do not harden the pigment tissue. After the image has been
transferred, the gelatine image can be hardened. Klaus said he didn't have
to. Luis said it might create problem of layers separating.