Patent ID: 8678545
Filing Date: 2014-03-25
Classification: B41J

Abstract:
1. An inkjet head comprising: an actuator substrate provided with a pressure generating chamber; a nozzle plate provided with multiple nozzle holes discharging liquid stored in the pressure generating chamber by a pressure generating section, the multiple nozzle holes being formed on a nozzle surface opposite to a recording media; a common passage substrate provided with a common passage to supply liquid to the pressure generating chamber; and a cover member to cover at least a perimeter of the nozzle surface, with an opening formed to expose the nozzle holes and a periphery of the nozzle holes, wherein, in a prescribed direction, a dimension of the opening of the cover Lc, an external dimension of the actuator substrate La, an external dimension of the nozzle plate Ln, and an external dimension of the common passage substrate Lm, satisfy inequalities, La≦Lc<Ln≦Lm, wherein a supporting member is provided in a space surrounded by an opposing surface of the nozzle surface of the nozzle plate, a surface of the common passage substrate facing to the nozzle plate, and external side surfaces of the actuator substrate, to support the nozzle plate by attaching to the opposing surface of the nozzle surface and the surface of the common passage substrate facing to the nozzle plate.