Maybe the best acknowledged technique of non-contact marking and coding is continuous ink jet (CIJ). The continuous ink jet method is used commercially for marking and coding of merchandises and packages. Using a non-contact procedure, CIJ inkjet printer has become one of the most adaptable and robust alternatives for manufacturers. Small character CIJ permits codes to be applied in a multiplicity of fonts, lines and direction and at an array of output speeds – more than 1,000 feet/minute and with code heights ranging from 1/32- inch to more than ½-inch. A small character CIJ printer can produce lot codes, expiration dates, bar codes and graphics on a catholic multiplicity of primary packing. Also key is that several small-character CIJ printers are transportable and can be relocated from line to line as requirements ascend.
In continuous ink jet technology, ink continuously streams through the system, but only prints when motioned to do so. Ink is strapped by air pressure from an ink cylinder to the printhead. The pressurized ink then arrives in the nozzle, where the pipe carrying the ink passes through a ceramic ring. Pulsates of electricity are sent to this loop from the control board. The piezoelectric crystal in the ring contracts with every pulse of electricity, clasping the tube. These rapid squeezes create a wave action in the ink. The wave action triggers the ink to break into drops presently after it leaves the spout opening and enters the charge tunnel.
The destination of every single ink droplets is determined by the control panel inside the small character CIJ printer. When a droplet breaks from the ink torrent, a positive voltage is applied to the charge passageway. This gives the drop a negative charge as it splits in the tunnel. The ink droplets then pass beneath the deflection plate, which has a fixed positive charge. Every droplet is given the accurate charge that will bounce it to a precise location on the material to be printed. Those droplets not required for printing are given no charge at all and are re-dispersed back into the system for succeeding printing. The vertical placement of every ink drop is determined by the printer. The horizontal placement is determined by the movement of the surface to be printed, like packages on a manufacture line. Characters are created in a dot matrix format with several dots crafting a single character.