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.