Patent ID: 9073319
Filing Date: 2015-07-07
Classification: B41J

Abstract:
1. An inkjet head, comprising: a nozzle plate including a nozzle; a pressure chamber fluidly communicating with the nozzle, the pressure chamber being adjacent to the nozzle plate; a vibrating plate included in the nozzle plate; an actuator incorporated in the nozzle plate and configured to vibrate the vibrating plate and pressurize ink in the pressure chamber to eject the ink from the nozzle; an ink channel which supplies ink to the pressure chamber; first substrates laminated on the nozzle plate, the first substrates forming a pair of first walls of the pressure chamber extending in a direction crossing the nozzle plate; a second substrate laminated on the first substrate and opposed to the nozzle plate, the second substrate forming a second wall of the pressure chamber opposed to the nozzle plate and separating the pressure chamber from the ink channel, and the second substrate being provided with a throttle hole; wherein dimension Lc between the nozzle plate and the second substrate is larger than dimension Dc between the first walls, and the throttle hole has an area smaller than a cross-sectional area of the pressure chamber in parallel with the nozzle plate.