/diy/ - Do It Yourself

So lets say I want to take on the task of DIYing myself an inkjet printer...
Assuming I can get everything else figured out, is there any way I can just go and buy a print head module or is that all proprietary bullshit?
I've heard there's some fancy MEMS-based tech out there but that might be too state-of-the-art for me to get my hands on.

I'm not too fond of the idea of trying to fuck around with nozzles and fluid pressure if I can avoid it.