Printer with low voltage vapor bubble generating heaters

摘要

An inkjet printer that has a printhead with a plurality of nozzles and one or more heater elements 10 corresponding to each nozzle, configured to operate at low voltage and low current. Each heater element 10 vaporises a printing fluid 11 to form a bubble 12 therein. The generation of the bubble 12 causes the ejection of a drop of the printing fluid (such as ink) through the corresponding nozzle 5 to effect printing. Each heater element 10 requires less than 8 volts and a current of less than 60 milliamps for less than 1.5 microseconds, in order to form the gas bubble 12 that causes the ejection of the drop of printing fluid 11. These lower voltages are more suited to CMOS circuitry components and helps to avoid problems such as 'ground bounce'.