With a printer like a 3880 for example, and Cone's selenium ink set, with a little tweaking you can make digital negatives that are good enough for contact silver gelatin prints. I know because I've made quite a few just to see if it was possible. I've showed them to experienced traditional printers and they could not tell the difference. The weakest link is really scanning. Anyway..too much to cover and this is apug. I make digital positives for photogravure that are flawless and there are a lot of resources out there to get great results. As with anything..time and money are needed