For moving probably the solution: 2 step motors (1 horizontally, 1 vertically)
I don't know of any patent that is on basic printers. If PDF is patented: You could convert PDF and PS files on the computer and then send the raw pixel data to the printer.
Fingerprints: I think you mean the yellow dots. I guess they are totally voluntary by the industry. (If any expert reads this and know that's wrong, please correct me.)
Again guessing: Ink doesn't produce poisonous stuff, only laser and thermo printers do. Or?
Regarding re-use of existing cartridge design/system: would it be too hard to 3D-print a cartridge in our own format?
Also we need a very primitive CPU/processor/microcontroller and a very simple firmware. Just spray ink or not, then move the carriage horizontally, then vertically.
I am wondering about (a) the data cable and (b) the power source:
MMIX is created by Prof. Knuth purely for expressing his algorithms. Back then C++ and Java were the latest, hottest sh... (and would soon be outdated themselves). Prof. Knuth didn't like C++ and general programming language fashion. So he invented MMIX. It was never meant to be implemented in real HW.
I don't know whst's wrong with the other CPU architectures you listed. I especially wonder why Sparc wasn't used more.
For moving probably the solution: 2 step motors (1 horizontally, 1 vertically)
I don't know of any patent that is on basic printers. If PDF is patented: You could convert PDF and PS files on the computer and then send the raw pixel data to the printer.
Fingerprints: I think you mean the yellow dots. I guess they are totally voluntary by the industry. (If any expert reads this and know that's wrong, please correct me.)
Again guessing: Ink doesn't produce poisonous stuff, only laser and thermo printers do. Or?
Regarding re-use of existing cartridge design/system: would it be too hard to 3D-print a cartridge in our own format?
Also we need a very primitive CPU/processor/microcontroller and a very simple firmware. Just spray ink or not, then move the carriage horizontally, then vertically.
I am wondering about (a) the data cable and (b) the power source:
(a) could be serial, RS232 or USB.
(b) could be battery, USB, power adapter.