I must admit that I now feel foolish for starting this thread on a subject about which I know little.(Dye Transfer) That takes care of the Matrix Film as far as I am concerned. On the other hand, Jim's idea of loading pigment into panchro emulsions, be they gelatin or polymer based, is still of great interest to me. After I make my next batch of emulsion I will do some initial testing using commercial pigment despersions. If that works out, great. But if light transmision proves to be a problem, I have many years of "proffesional" experience in pigment dispersion for for photoresists. I am familiar with what Drew is talking about. I might actualy purchase a benchtop three-roll mill.
Once I have begun I will begin posting results here. But. That will be at least three weeks from now.
OTOH , someone could decide to pursue matix film and receiving medium based on gelatin emulsions. Why not?
Jim already has the matrix formula published. Bill
Read the responses I posted and that Jim Browning posted.
Originally Posted by holmburgers
I always read what has been posted by you two, and I didn't mean to gloss over it in my post. I do think, though, that it's the gelatin-to-gelatin transfer that should be considered the "fundamental" mechanism. To me it seems like the mordanting aspect is an improvement, not an embodiment of dye-imbibition itself, which can be demonstrated in the simplest form with a gelatin relief, dye and any absorbent surface.
So as far as Bill is concerned, the crux is whether PVA will act similarly to gelatin in its ability to absorb a dye solution, and that's what T-grain was addressing originally.
Since I,prematurely at best, started this thread, I have read much speculation and no hard evidence. I should have done some experiments. Then either opened my big mouth,or not.
When I first started my goal of making a panchromatic emulsion, I got more discouragement than encouragement, to say the least. When I started using silane treated PVA instead of gelatin , the same. Fortuneately, I kept going anyway.
I am not saying that the reasons set fouth in this thread, for the inpractability of of what I asked about are not correct. They probably are correct. That is why I am puting this whole topic away, for now. And I have more promissing things that I can do with my time. If I ever decide to pursue anything having to do with dye transfer, I might well return to gelatin in order to work with what has already worked.
At the risk of saying too much (which I'm wont to do), I'll simply add that regardless of the workability your proposal, the proposal itself has sparked a valuable discussion.
Sometimes the most interesting stuff comes about when people speak before they think, contrary to what countless elementary school teachers and mothers have always told us!
Jack Denim as just posted a very relavent artical on Jim's Yahoo Forum "Dye Transfer.