Summary: There were three requirements that I had when selecting a printer for my field work: low enough wattage to run off a power inverter, color ink, and ink that doesn't run when it gets wet. The only one that fit the bill as of May 2014 was this Ricoh ink gel printer. Why not laser or inkjet?
Summary: For those with questions on drivers. First pic Sawgrass Driver. 2nd pic is Ricoh Driver Either driver will control the ink flow and both allow manual changes Check for compatibility for driver with computer operating system.