Today I’m making negatives in preparation for spending the day in my darkroom tomorrow printing a set of negatives to make a new copy of my “By Hand” book. So I thought I’d share some of the steps involved in making palladium prints.
First up is making the negative. Palladium printing, like all 19th century processes, is a contact printing method. The negative is placed directly on the light sensitive paper so the final print is the size of the negative. Many people these days are making digital negatives, rather than using film negatives from their cameras. This allows all of the work needed to make a great print to be done up front when preparing the digital file for printing on my Epson printer. This means that when actually exposing the negative and paper I don’t have to rely on crude dodging and burning techniques that we used to use. Of course, there is a lot that goes into making a really good digital negative that I may go into in another post. So today I’m printing out a new set of negs for printing tomorrow.
Once in my darkroom I first measure out the chemistry I’ll need to sensitize the paper. These processes rely on hand coating various art papers with light sensitive chemistry. You can’t buy ready made paper to make palladium prints.
Next is coating the paper – I use a specific Richeson paint brush that works extremely well. Once dry (but not completely dry!) I place the neg on the paper and put them in my UV exposure unit. Palladium is exposed with UV light and I use a screenprinting unit that provides that as well as a convenient vacuum system which ensures the neg is evenly situated on the paper. Exposure times are pretty long, something like 5 minutes.
Finally the print is run through chemistry. One of the best things about palladium printing is that the image appears on the paper the instant you drop it in the developer – presto, the image jumps out at you! Then comes a series of clearing baths – all in all, the print is in chemistry for about 40 minutes so you need to use a paper that has good wet strength.
That’s it in a nutshell. Of course I’ve simplified it somewhat, especially the part about making negs.
I particularly like the fact that I’m combining 19th century technology (the palladium chemistry and process) with 21st century stuff (the digital negative creation). As I tell my friends, I’m not sure the 20th century contributed much of importance to the history of photography! (… just kidding).