Quote Originally Posted by Photo Engineer View Post
Well, here is another in a series of information on B&W process chemistry design.

Everyone seems to be aware of superadditivity in developers, so I will go beyond that to something new.

Another 'beyond' is the use of silver halide solvents in fine grain or high acutance developers. People are afraid to use them for fear of dichroic fog. I must say that most films today have ingredients that prevent large scale formation of dichroic fog, but you can see this fog if you use high levels of solvent or if you use a strong solvent. Kodak has additives for developers(Microdol-X) and other films for preventing this sort of fog. They are unique. One is published. Put another feather in your cap if you find either and post it. Then we can discuss it further.


AFAIK, there are Kodak patents that cite the use of an anti-stain agent for preventing dichroic fog. One of these is Benzoresorcinol (2,4-dihydroxybenzophenone). This or similar components may even be used in a wide range of commercial developers besides the Kodak products.
Anti-Stain agents are mentioned along with two E.K. Patents by Richard W. Henn on Ryuji Suzuki`s Silvergrain website.
Is this one of the ingredients that you wish to discuss?