Patent ID: 8864287

Claim:
A method of ejecting a drop of fluid, the method comprising: providing a fluid ejector including: a substrate including a cavity and a fluidic feed; a MEMS transducing member, a first portion of the MEMS transducing member being anchored to the substrate, a second portion of the MEMS transducing member extending over at least a portion of the cavity, the second portion of the MEMS transducing member being free to move relative to the cavity; a compliant membrane positioned in contact with the MEMS transducing member, a first portion of the compliant membrane covering the MEMS transducing member, and a second portion of the compliant membrane being anchored to the substrate, wherein the compliant membrane extends over the cavity but does not extend over the fluidic feed; partitioning walls defining a chamber that is fluidically connected to the fluidic feed, wherein at least the second portion of the MEMS transducing member is enclosed within the chamber; and a nozzle; supplying a quantity of fluid to the chamber through the fluidic feed; and applying an electrical pulse to the MEMS transducing member to eject a drop of fluid through the nozzle.