OK, triple transfer
>This is the method I preferred (until I ran out of hair to pull out;-))
We prefer it, still we have some hair to pull :-)))
>The soluble (i.e., unexposed) gelatin washes off in the first step, while
>tissue is washed off on the plexi, at about 40C. This normally would take 5
>to 8 minutes. I preferred using two separate hot water baths. The first one
>did most of the work, say for 4 of the 5 minutes, and got quickly saturated
>with dissolved gelatin (and pigment and dichromate). In the second tray I
>could see very well what was going on. Then it went to a tray of cold water
>for at least several minutes. The water was changed once or twice before
>the plexi was pulled out and hung up to dry, but water was clear.
We do not change the cold water
>When dry, the images on the plexi were transferred to a soluble temporary
>support (paper coated with soft gelatin). When all assembled on the STS,
We assemble CMY in register on the same plastic and when dry to STS
>they were transferred one last time onto a final support. At that point the
>STS was pulled gently off the final, and while it had a strong relief, I
>dont remember seeing any dichromate at that stage on it. (How about you
>Sandy?)
You can see a pale yellow stain in this stage (backside)
>The image and its final support get another few minutes of hot
>water at about 45C to remove all soluble gelatin from the STS, and then
>goes into a cold water bath. All this (wet) time water soluble compounds
>are being removed from the print.
It is here you see the real yellow color -on the STS, before you throw it away.
Best regards, Hans & Chia