Yes, basically...your assumption is mostly correct. The basic process is as
follows: A Dichromate is added to an emulsion. I use a polymer / acrylic
based emulsion sold in crafts and screen print supply stores. I then add
dry glaze to the mixture and stir until blended. A thin coating is applied
to the ceramic surface, dried and exposed by contact printing. The
developer is water - tap works well. After it dries, it is fired.
WARNING: If you fire the piece yourself, make sure the kiln vents outside.
The dichromate fumes given off can cause problems.
RM