Droplet discharging head and image forming apparatus

摘要

A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements.

主权项

1. A droplet discharging head comprising:
a nozzle substrate including a plurality of nozzle openings, each being provided for discharging a droplet; a flow path substrate including a plurality of liquid pressure chambers communicating with the respective nozzle openings; and a driving element disposed on the flow path substrate, the flow path substrate comprising:
a vibration plate facing the nozzle substrate;a plurality of piezoelectric elements facing the liquid pressure chambers via the vibration plate;a plurality of individual electrodes for applying driving voltages to the respective piezoelectric elements;a common electrode for applying a common voltage to the piezoelectric elements; anda second reinforcing wire connected to the driving element, wherein the plurality of piezoelectric elements are arranged on the flow path substrate and as arranged, are aligned in a predetermined direction, the second reinforcing wire is disposed on the flow path substrate within an area overlapped by the driving element and is elongated in a direction parallel to the predetermined direction in which the piezoelectric elements are arranged, for each piezoelectric element amongst the plurality of piezoelectric elements,
the driving element includes a corresponding protruding electrode and the driving element applies the corresponding driving voltage to the piezoelectric element via the corresponding individual electrode to an end of the piezoelectric element, andthe end of the piezoelectric element contacts the corresponding individual electrode, and the second reinforcing wire extending in the predetermined direction in which the plurality of piezoelectric elements are aligned ranges over the ends of the plurality of piezoelectric elements, the driving element is disposed on the flow path substrate with a flip-chip bonding via the protruding electrodes.