You can do the same task with jet technology, you just need the special industrial jets. There're out there, just very expensive.
There might be a spray coating head that would make this easier, then all you need is a pump. If you really want to pursue this, I would suggest looking for spray coating technology. I don't think the common inkjet printer will be the answer, at least not with a single pass. A spray with a trailing blade seems like the best option, especially if you use a goop that can be exposed to a safelight so that you can monitor the process until it is perfected.
The trailing blade would = mess. My aim is to have a machine that can be used exactly like an inkjet printer but making coatings with virtually no mess or cleanup. You would buy an emulsion canister or make a batch of emulsion, fill the canister, clamp the canister into the device then have the nossles do a coating in a way that is a perfect uniform coat that's repeatable, etc.