Patent ID: 8042935

Claim:
A wireless micro-fluid jetting device configured for ejecting a plurality of fluids, the wireless micro-fluid jetting device comprising: a handheld housing containing a logic circuit and fluid reservoirs for at least two different fluids, the handheld housing being substantially cylindrical extending from a first end to a second opposite end that a user grasps an exterior thereof to manipulate past a substrate during use; a micro-fluid ejection head at the first end of the handheld housing to face the substrate during use to eject fluid downward onto the substrate, the ejection head being in electrical communication with the logic circuit and each of the fluid reservoirs; a self-contained power source in the handheld housing in electrical connection with the micro-fluid ejection head for activating the micro-fluid ejection head for jetting the fluids therefrom; and a color detection device disposed at the second opposite end of the handheld housing, that detects a desired color for use upon activation and samples color of ejected fluid on the substrate upon the user flipping the handheld housing to face the second opposite end to the substrate, wherein the jetted fluid corresponds to the desired color.