Patent ID: 8684498
Filing Date: 2014-04-01
Classification: B41J

Abstract:
1. A liquid ejection head comprising: a nozzle plate having a nozzle array constructed of multiple nozzles from which liquid droplets are ejectable; a channel plate in which grooves that form part of multiple pressure chambers respectively communicating with the multiple nozzles are provided with partition walls interposed between the grooves; a wall member that covers the grooves to form part of walls of the pressure chambers, the nozzle plate, the channel plate and the wall member being laminated together in a laminating direction, and the multiple pressure chambers guiding fluid in a lateral direction perpendicular to the laminating direction of the nozzle plate the channel plate and a wall member; and multiple first through-holes formed in the channel plate thickness of the channel plate to connect the multiple nozzles and the multiple pressure chambers, respectively, the multiple first through-holes being provided with partition walls interposed therebetween, each of the multiple first through-holes having a first opening facing the wall member and a second opening facing the nozzle plate, the second opening being offset from the first opening in a direction in which the nozzle arrays extend perpendicular both to the lateral direction and to the laminating direction of the nozzle plate the channel plate and a wall member, each of the multiple first through-holes further having a portion between the first and second openings to change a direction of flow of liquid.