This thread is a interesting, and I'm sorry but I missed it initially. You would really enjoy J.S. Friedman's book Umut, he worked for Technicolor (or consulted?) at one time, and discusses the scheme in some detail.

It's amazing to think that Technicolor made literally thousands of dye-transfer prints in a single day, or with a single print of a movie, and with a remarkably high degree of sophistication.