Platinum/Palladium Notes
Potassium Oxalate Developer
Introduction Potassium oxalate (which I abbreviate KO) is my preferred developer for platinum/palladium printing. Compared to the other commonly used developers for Pt/Pd printing, ammonium citrate and sodium citrate, KO produces a notably warmer image hue which is a quality I seek in most of my printing. Heating it – I usually warm it up… Continue reading Potassium Oxalate Developer
Bibliography for Platinum/Palladium Printing
BIBLIOGRAPHY This list is primarily drawn from books and articles in my own library. It is by no means exhaustive. I will add to it as new sources come to my attention. Books: Arentz, Dick. Platinum & Palladium Printing. 2nd Edition. Focal Press, 2005. Barnier, John (ed.). Coming Into Focus: A Step-by-Step Guide to Alternative Photographic Techniques. Chronicle Books, 2000.… Continue reading Bibliography for Platinum/Palladium Printing
Platinum/Palladium Printing: A Brief Outline
Step by Step Coat and dry the paper. Expose to UV light. Develop: 2-5 minutes. Clear: 3 trays, 5 minutes each. Wash: 15-30 minutes in running water. Dry: face up on screens, or hang. Negatives Negatives for platinum/palladium (pt/pd) should have a density range of 1.2 to 1.8. If the negative prints well on grade… Continue reading Platinum/Palladium Printing: A Brief Outline
Formulary for Pt/Pd Printing
Ferric Oxalate Solution (25%) Solution A: 25 gm ferric oxalate powder 2 gm oxalic acid – may increase printing speed and Dmax 88ml distilled water at room temperature stir constantly until solids have completely dissolved (~8 hours) add distilled water to bring to 100ml if necessary Solution B: add 0.6% potassium chlorate to Solution A (e.i.… Continue reading Formulary for Pt/Pd Printing
Na2 Serial Dilution
Contrast Control for Palladium Printing Using Sodium Hexachloroplatinate A serial dilution is a series of stepwise dilutions of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion. Serial dilutions are used to accurately create highly diluted solutions as well… Continue reading Na2 Serial Dilution
Na2 Contrast Control Chart
Volume indicated comprises equal amounts of Ferric Oxalate (FO) and palladium solution (Pd) to which is added 1 drop of the indicated concentration of Na2 solution. For most papers I also add 1 drop of Tween 20 per 1 ml of solution. Example: 2ml = 1ml FO + 1ml Pd + 1 drop 5% Na2 + 2… Continue reading Na2 Contrast Control Chart
Digital Negatives with QuadToneRIP
Note: Since early in 2016, I have been making my digital negatives using the PiezoDN system from Jon Cone and Walker Blackwell at InkjetMall. I believe it is in a class by itself, however I realize that a dedicated solution such as PiezoDN which requires a special inkset and special software is not for everyone.… Continue reading Digital Negatives with QuadToneRIP