Jerusalem-based Zuta Labs is developing the Zuta Pocket Printer – a tiny robot print head that can move around on a page and print documents at 1 page per minute. Zuta has reached its kickstarter goal of $400,000 funding but you can still pledge to pocket one for $200.
https://www.kickstarter.com/projects/1686304142/the-mini-mobile-robotic-printer
https://www.youtube.com/watch?v=IjyGjd40cMU