ic-racer...That stuff is re-packaged x-ray duplicating film. It's a direct positive film, so processing is the same as sheet film or paper. Like jeffreyg said, it's really slow. I don't have my notes in front of me, but exposure time was something like 4 minutes under a D2 dichroic head on the "high" setting, either wide open (f/5.6) or f/8.
Originally Posted by ic-racer
I tried processing in dilute HC-110 (either Dil. H or Dil. D) or in Formulary Liquidol paper developer. It needs a good pre-soak (with agitation), or else all the anti-halation, etc. dyes cause some mottling during development.
Due to the blue tint of the base, the visual density of the base is about 0.2, but the blue channel of my color densitometer reads 0.06 on the base. I think this will be good for UV-based alt-process, or graded papers, but the blue might mess with VC papers.
I went with T-Max interpositives with final negs on Arista-II litho film, for a current project, because it gave more flexibility in adjusting final D-range for alt-process. The x-ray dupe film can be manipulated a little bit with developing time, but I never got it dialed in. I'll probably try again at some point in time, though.
Hope this helps some.
Last edited by gmikol; 05-05-2010 at 03:27 PM. Click to view previous post history.