Pictorico UV density.

[JBrunner]

I have Pictorico high gloss white film (the box with the nautilus ). I bought it some time ago to learn a bit about digi neg making, but the printer I had at the time frustrated me with banding, etc, so I put it away. Now with printing problems solved, I have managed to set up and print a couple of nice looking negs, one is black only, and the other has come color (orange). I'm starting with cyanotype while I dial in my understanding of curves, color densities, etc.

So I went to print these negs on cyanotype in my Nuarc 26 1k to evaluate my efforts, and even after baking it for 2000 units I have a bit of a latent image, but still no usable exposure. Even border areas with no ink (so just the Pictorico) don't really show a lot of exposure. For comparison my normal PMK negs prints on this machine with usually about 600-800 units, and they are fairly dense negs. Is Pictorico really that dense to UV? Do I have the wrong stuff? Am I missing something? If it really is that dense I guess I will have to re-calibrate my integrator so I don't have to re-strike the machine six times.

 

[jimcollum]

I have Pictorico high gloss white film (the box with the nautilus ). I bought it some time ago to learn a bit about digi neg making, but the printer I had at the time frustrated me with banding, etc, so I put it away. Now with printing problems solved, I have managed to set up and print a couple of nice looking negs, one is black only, and the other has come color (orange). I'm starting with cyanotype while I dial in my understanding of curves, color densities, etc.

So I went to print these negs on cyanotype in my Nuarc 26 1k to evaluate my efforts, and even after baking it for 2000 units I have a bit of a latent image, but still no usable exposure. Even border areas with no ink (so just the Pictorico) don't really show a lot of exposure. For comparison my normal PMK negs prints on this machine with usually about 600-800 units, and they are fairly dense negs. Is Pictorico really that dense to UV? Do I have the wrong stuff? Am I missing something? If it really is that dense I guess I will have to re-calibrate my integrator so I don't have to re-strike the machine six times.

yea, the white film doesn't transmit much UV at all.. what you need is OHP film (transparent). The white film is often used for neg's being printed on silver geletin

 

[donbga]

I have Pictorico high gloss white film (the box with the nautilus ). I bought it some time ago to learn a bit about digi neg making, but the printer I had at the time frustrated me with banding, etc, so I put it away. Now with printing problems solved, I have managed to set up and print a couple of nice looking negs, one is black only, and the other has come color (orange). I'm starting with cyanotype while I dial in my understanding of curves, color densities, etc.

So I went to print these negs on cyanotype in my Nuarc 26 1k to evaluate my efforts, and even after baking it for 2000 units I have a bit of a latent image, but still no usable exposure. Even border areas with no ink (so just the Pictorico) don't really show a lot of exposure. For comparison my normal PMK negs prints on this machine with usually about 600-800 units, and they are fairly dense negs. Is Pictorico really that dense to UV? Do I have the wrong stuff? Am I missing something? If it really is that dense I guess I will have to re-calibrate my integrator so I don't have to re-strike the machine six times.

The Pictorico While Film has a UV log density close to 5.0, no good for UV printing. You are using the wrong material for digi negs for alt. (UV) printing.

Don't bother trying to use this stuff for UV. It can make good film for silver gelatin printing if your printer is up to the task.

Don Bryant

 

[JBrunner]

Thanks guys, I've got the right stuff now.