A method for manufacturing a device for ejecting a fluid, including the steps of: forming, in a first semiconductor wafer that houses a nozzle of the ejection device, a first structural layer; removing selective portions of the first structural layer to form a first portion of a chamber for containing the fluid; removing, in a second semiconductor wafer that houses an actuator of the ejection device, selective portions of a second structural layer to form a second portion of the chamber; and coupling together the first and second semiconductor wafers so that the first portion directly faces the second portion, thus forming the chamber. The first portion defines a part of volume of the chamber that is larger than a respective part of volume of the chamber defined by the second portion.

An apparatus includes a reservoir and a printhead. The printhead includes a support structure including a deformable portion defining at least a top surface of a pumping chamber, a flow path extending from the reservoir to the pumping chamber to transfer fluid from the reservoir to the pumping chamber, and an actuator disposed on the deformable portion of the support structure. A trench is defined in a top surface of the actuator. Application of a voltage to the actuator causes the actuator to deform along the trench, thereby causing deformation of the deformable portion of the support structure to eject a drop of fluid from the pumping chamber.

An apparatus includes a reservoir and a printhead. The printhead includes a support structure including a deformable portion defining at least a top surface of a pumping chamber, a flow path extending from the reservoir to the pumping chamber to transfer fluid from the reservoir to the pumping chamber, and an actuator disposed on the deformable portion of the support structure. A trench is defined in a top surface of the actuator. Application of a voltage to the actuator causes the actuator to deform along the trench, thereby causing deformation of the deformable portion of the support structure to eject a drop of fluid from the pumping chamber.

A liquid ejecting apparatus includes a first liquid ejecting head configured to eject a liquid to an ejection direction, a sub-carriage that holds the first liquid ejecting head, and a carriage that holds the sub-carriage. The sub-carriage includes: a first member that is thermally conductive and holds the first liquid ejecting head; and a heating section provided in the first member. The first liquid ejecting head includes a first side wall facing the first member. The first member is located between the heating section and the first side wall when viewed in the ejection direction.

A head comprises multiple nozzles on an ejection surface. The number n of nozzle rows each comprising a plurality m of nozzles arranged in a direction intersecting a first direction are disposed parallel to each other, where n and m are integers 2 or greater. Between the nozzles of each nozzle row, the nozzles of other of the nozzle rows are located as viewed in the first direction and the plurality of nozzles are located at the number m×n of dot positions. An interval defined by the number of dot positions from a dot position where one nozzle is arranged to a dot position just before a dot position where a next one of the nozzles is arranged in each row is referred to as nozzle pitch. At least one of the rows comprises two or more types of the nozzle pitches varying in the number of the dot positions.

A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.

A method for producing a liquid transport apparatus is disclosed. The liquid transport apparatus includes a pressure chamber plate, a ceramics layer formed on a surface of the pressure chamber plate, a piezoelectric layer formed on the ceramics layer, and an electrode formed on the piezoelectric layer. The ceramics layer is formed by heating an insulating ceramic material at a temperature lower than an annealing temperature of the piezoelectric layer. Accordingly, the atoms of the pressure chamber plate are suppressed from being diffused into the piezoelectric layer.

Provided are a head device, an ink jet printing device, and a driving voltage adjustment method capable of adjusting a driving voltage corresponding to a target jetting amount and suppressing unevenness of printing density occurring between head modules. A dead device includes an ink jet head including a plurality of head modules, and a driving voltage supply device that includes a processor and supplies a driving voltage to the ink jet head, in which the processor acquires a module characteristic, acquires an ink characteristic of ink applied to printing, derives a first voltage coefficient for adjusting a driving voltage corresponding to a target jetting amount for each head module based on the module characteristic and the ink characteristic, and adjusts the driving voltage by applying the first voltage coefficient for each head module.

A recording head includes a pressure chamber and a piezoelectric actuator configured to change a volume of the pressure chamber. The piezoelectric actuator includes a vibration plate forming one wall surface of the pressure chamber, a lower electrode formed on the vibration plate, a piezoelectric body formed on the lower electrode, and an upper electrode formed on the piezoelectric body and the vibration plate. When viewed from a ±Z direction orthogonal to the vibration plate, the lower electrode and the piezoelectric body do not overlap a central portion of the pressure chamber, when viewed from the ±Z direction, the lower electrode, the piezoelectric body, and the upper electrode overlap an end portion of the pressure chamber, and when viewed from the ±Z direction, the upper electrode overlaps the central portion of the pressure chamber.

In this liquid ejecting head, the pressure chamber extends in a second direction crossing a first direction, the first direction being a direction from the pressure chamber to the nozzle. The pressure chamber and the absorbing chamber are disposed at a same position in the first direction and next to each other in the second direction. The actuator is disposed on an opposite side in the first direction with respect to the pressure chamber. The absorption member is disposed on the opposite side in the first direction with respect to the absorbing chamber, the absorption member including at least part of members constituting the actuator.