Patent ID: 7413291

Claim:
An ink jet head comprising: a main body comprising a plurality of sets, each set including an input terminal, an actuator electrically connected to the input terminal, a pressure chamber coupled with the actuator, and a nozzle communicated with the pressure chamber, wherein when a voltage is applied to the actuator in a selected set via the input terminal in the selected set, ink within the pressure chamber in the selected set receives pressure to jet from the nozzle in the selected set; a wired sheet comprising a plurality of sets, each set including a signal line and an output terminal connected to the signal line; and a connecting sheet comprising an insulating sheet and a plurality of sets, each set including a first terminal formed on a first face of the insulating sheet and a second terminal formed on a second face of the insulating sheet and electrically connected to the first terminal, wherein each set of the connecting sheet uniquely corresponds to one of the sets of the main body and to one of the sets of the wired sheet; wherein the connecting sheet is located between the main body and the wired sheet, the first terminal in each set of the connecting sheet is electrically connected to the input terminal in the corresponding set of the main body, and the second terminal in each set of the connecting sheet is electrically connected to the output terminal in the corresponding set of the wired sheet.