heaters 13 which are at least partially formed or positioned on a silicon substrate 16 of nozzle array printhead 12 around each corresponding nozzle 17 although each heater 13 may be disposed in various ways about each nozzle such as in the neck of the nozzle 17 or at the bottom of it the heaters 13 are preferably disposed close to corresponding nozzles 17 in a concentric manner in a preferred embodiment heaters 13 are formed in a substantially circular or ring shape however it is specifically contemplated that heaters 13 may be formed in a partial ring square or other shape adjacent to the nozzles 17 each heater 13 in a preferred embodiment is principally comprised of a resistive heating element electrically connected to contact pads 21 via conductors 28 each nozzle 17 is in fluid communication with ink supply 24 through an ink passage not shown formed in the substrate 16 of the nozzle array 12 it is specifically contemplated that nozzle array 12 may incorporate additional ink supplies in the same manner as supply 24 as well as additional corresponding nozzles 17 in order to provide color printing using three or more ink colors additionally black and white or single color printing may be accomplished using a single ink supply 24 and nozzle 17 conductors 28 and electrical contact pads 21 may be at least partially formed or positioned on the nozzle array substrate 12 and provide an electrical connection between a controller 23 and the heaters 13 alternatively the electrical connection between the controller 23.