0.25 grams of palladium chloride makes 1 liters of toner. Inkjet printing machines have 4 or 6 toner cartridges. We can load them with different tones of toners and print our prints. Its a theoratical question , if we engineer it good , what else prevent us from success ?

I read at Mike Ware as the permanance of the palladium , may be this is the difference from the ordinary inkjet print.