Not really, there are reverse engineering efforts like this: https://www.kickstarter.com/projects/nicholasclewis/inkshield-an-open-source-inkjet-shield-for-ardu

Not really, there are reverse engineering efforts like this: https://www.kickstarter.com/projects/nicholasclewis/inkshield-an-open-source-inkjet-shield-for-arduino https://www.kickstarter.com/projects/nicholasclewis/inkshiel... But there are not Open source inkject printers because it takes millions to manufacture the inkjet itself.