Digital Platinum?

[Bill_1856]

I wonder if anyone's tried using platinum pigments in an inkjet printer?

[C. D. Keth]

What would that accomplish over something like a piezography set of inks?

[Sylvester Graham]

And what is a platinum pigment? Metallic platinum ground up in ink?

[IanG]

Some, not anyone I know of jhere, already produce Inkjet Platinum prints, and they are of course fakes.

Ian

[Doug Howk]

Platinum/Palladium printing is one of the easiest and most consistent of the alternative processes. So I don't know of much if any benefit to spitting out the prints vs contact printing whether from in-camera or digital negatives.

[Lenny Eiger]

Bill,

Classic platinum is based on Ferric Oxalate (a light sensitive iron compound) and Potassium Chloroplatinite (a salt of platinum). In the traditional method, one actually makes an iron print during the exposure. During developing there is a bonding effect that happens and everything drops out except the platinum on the paper. (And some palladium if you like.)

There are no pigments. It is a chemical process. The color comes from the platinum and palladium.

That said, I have made a print recently, with my special mix of Cone's K7's, that are indistinguishable from the platinum print - from the same negative. The color is almost identical and the tonal range matches nicely.

Lenny

[Preston]

I always wondered what platinum printing was. I've seen a few prints and the tonality is wonderful. I am curious about something, though, Lenney. Given the two compounds you mention above, where does the palladium come from, or is there a different compound used in the platinum/palladium alt-process?

--P

[sanking]

"where does the palladium come from, or is there a different compound used in the platinum/palladium alt-process,"

Palladium and platinum, along with rhodium, ruthenium, iridium and osmium, are metals in a group of elements referred to as the PGMs (the platinum group metals). The largest mines for palladium and platinum metals are in Russia and South Africa. You may have noticed that one of these mines in South Africa was in the news recently because of a strike of the workers that resulted in a number of deaths.

Platinum printing, as we use the term today, typically means a combination of palladium + platinum, or perhaps only palladium. There is no specific pt/pd curve, as the shape depends highly on the combination of these two metals. Prints made with pure palladium, when printed with analog negatives, typically have a long toe and long shoulder.

Sandy

[ROL]

Some, not anyone I know of jhere, already produce Inkjet Platinum prints, and they are of course fakes.

Ian

Course flakes?


There seems to be a lot of enmity here as regards p/p that I rarely see applied to GSP's and "pigment" (inkjet) printing, which I believe many LF shooters here (not me) engage in.

[Sylvester Graham]

Platinum/Palladium printing is one of the easiest and most consistent of the alternative processes. So I don't know of much if any benefit to spitting out the prints vs contact printing whether from in-camera or digital negatives.

Are you forgetting the price of platinum??