zlacker

>>b112+(OP)
Is there a printer that isn't a proprietary ink dispensing jail?

I'm with current knowledge and tech it should be possible to print your own printer?

>>joshua+77
Epson EcoTank, pretty hard to lock out other vendors when your supply is delivered as a liquid.

>>colech+S7
you can have some sensors that test whatever physical property of the liquid (spectrum, electrical and thermal conductivity, viscosity,...) and turn off if it's not in the range of the genuine product.

>>julien+bb
Not impossible, but pretty hard.

Not so hard to defeat such sensors by making a matching product (which should be the goal anyway for printer ink). It would then be an arms race with third party vendors and your own internal ink and sensors to make a more consistent product yourself with better and better sensors.