Patent ID: 8640717

Claim:
A fluid applicator comprising: a. two or more raised or pressurized containers for holding and dispensing different liquids; b. two or more electromechanical liquid valves, liquid pumps, and micro-electromechanical or piezo actuated fluid dispensers, ejectors, pumps, or valves, each connected at its inlet port by separate tubing to receive one of said liquids from one of said containers, for controlling the flow of said liquids; c. two or more liquid emitting orifices of fixed relative orientation directed at the same location of a target surface, herein called liquid orifices, said liquid orifices mounted in a nozzle head for manual or mechanical placement or motion comprised of stationary, one, two, or three dimensional motion, each of said liquid orifices connected by separate tubing to the outlet of one of said valves or pumps, for relatively fixedly directing each of said liquids to strike said same location on said target surface so as to require no motion of said nozzles or electrostatic effect upon said droplets to effectuate application of said droplets to said same location, whereby a chemical action of removing, depositing, or biphasic catalysis takes place, depending upon the chemical properties of said liquids and said target surface; d. an electrical unit controlling said electromechanical valves or pumps, whereby said valves or pumps pass or deliver each of said liquids repetitively in an alternate, sequential, or otherwise regularly timed pattern, such that said liquids essentially do not contact one another before reaching said same location on said target surface, wherein said electrical unit is configured to be started and stopped manually, electrically, or mechanically, said pattern of droplet emission is otherwise unaffected by and not coordinated with said placement or motion of said nozzle head relative to said target surface, wherein said pattern of droplet emission is of configured for, compared to said relative motion of said nozzle head, that at least one of said pattern of droplet emission is completed upon essentially the same location on said target surface, overlap of said droplet emission pattern included, and wherein said electrical unit further comprises a pulse provider configured to regulate the size of droplets emitted and the intervals between emissions based upon the length of provided pulses.