New dneg process - no interneg required

[Jordan]

Actually -- I wasn't thinking necessarily about how easy it is to wash the ink away (I think you and the ink manufacturers are working at cross purposes here!) but rather what the light-blocking ability of a "single coat" of ink is -- is the enlarger light able to fog your paper through a solid patch of black ink?

[keithwms]

Ah, okay. Qualitatively, it looks light the matte black ink has enough opacity to do the job. I'm not using a fancy inkset or QTR or anything like that this point, just a single matte black ink. So there is room for improvement but the early result is already quite good.

[Ben Altman]

Originally Posted by keithwms

Obviously a proper solvent for the ink, or a water-soluble ink would be a nice innovation; I tried various things like rubbing alcohol and acetone but those didn't seem to help much, once the ink has dried. I am still thinking that bleach may be the cure-all and might work equally well on fiber.

You might try MIS Base or similar third party cleaner/dilution agent. I'd use a mask, though, who knows what's in that stuff...

http://www.inksupply.com/product-det...fm/p/2614.html

[codex0]

Originally Posted by Don Bryant

What I would like to see instead is a digital exposure unit that could be used in the darkroom with gelatin silver paper. Similar to an inkjet printer, the paper would be exposed with a head containg tiny LEDs or something similar. The printer would be driven by a computer and output would come directly from Photoshop or similar image editor. That would eliminate the problem and expense of ink.

One of the grad students and I have been kicking the idea around of modifying a film recorder to do just that - putting an enlarging lens and a shutter on it, making it into a high-resolution, digital projection enlarger. I have several film recorders, but unfortunately don't have any of the driving software to try it...