Problem to solve is what printer to use to get digital negatives, there've been loads of discussions online about it. But haven't made my mind yet. Important parts are how much it costs, how much it costs to run and the size. I'd like it to be A3 for larger print size (or even A2, but are there even high quality transparencies in that size?).
Check out Piezography.com. Jon Cone has three seperate methods for making digital negatives on Overhead Projection Film that covers silver, alternative and carbon printing. I laid out $250.00 on a credit card as a deposit about two years ago to see a 13x19 inch portfolio to see the various combinations of inks and papers, and one of the samples was a digital negative specifically made for contact printing. Upon return of the portfolio I got my deposit back so the actual cost to me was just the shipping. Over the past two years there has been a lot of advances in Piezography, and it was worth the wait to where I am now finally printing.
Depending on the printer, if there are enough ink slots you can print your proofs on paper and then print your negatives without changing any carts or inksets. The system utilizes Roy Harrington's QTR RIP, Epson printers, but with Jon Cone's curves and inks.
Currently I have just set up warm neutral/selenium MPS split tone glossy system. I still have the capability to print matte, but at this time the extra cart slot for matte black is filled with Piezoflush to maintain the unused nozzle in my 3880. In the future I could adapt my 3880 for digital negative, I'm not there yet, but then again I would likely do this upgrade on a larger printer.
As far as being practical I can see using digital technology to its advantage, contact printing for consistent IQ and results are a real asset if you are printing limited editions, and in the above example customers and dealers are willing to pay the premium for a wet print.
Also at the PhotoPlusExpo I was offered a free print by Digital Silver Imaging. Last month I got my free 8x10 that is a zoomed in crop of a 40x60 inch print of a urban landscape file I shot with a Leica Monochrom at a high shutter speed hand held. I was shocked by the results and IQ. Prior to the PhotoPlusExpo I saw the Sabastion Salgado ehibition at ICP. Basically I can do prints of the same quality straight out of my Monochrom by using DSI.
I know dealers and collectors do not balk at prices and will pay premiums for the craft of something hand made. Although we all use the available technology, the layers, the usage, the adaptation, and the creative use of what technology is available still maintains the concept of hand made craftmanship due to skill and technic. For me Jon Cone has done much of the heavy lifting for me.
My journey is different, but we are on the same road. The best of luck.
Cal