How can I print powdered herbs and vitamins using an inkjet printer?

I'd like to modify an inkjet printer to print powdered herbs and vitamins. There was a comment by http://ift.tt/143UTW7 on Can I fill a ink cartridge with any type of ink? Even valuable ink?

That suggested it was possible to print vitamins using an inkjet printer. I was wondering how to do this, where to get sterile inkjet canisters to fill, how to fill the canisters and how to print to pill capsules using a "capsule machine" or to edible paper.

Thanks in advance