There are provided a head chip, a liquid jet head, a liquid jet recording device, and a method of manufacturing the head chip each capable of preventing the short circuit of electrodes by ink to maintain an excellent ejection performance over a long period of time. The head chip according to an aspect of the present disclosure includes an actuator plate, a cover plate, and an intermediate plate. In the actuator plate, open apertures which communicate an inside and an outside of a non-ejection channel with each other are formed in both end portions of the non-ejection channel in a Y direction. In the actuator plate, open apertures which communicate an inside and an outside of a non-ejection channel with each other are formed in both end portions of the non-ejection channel in the Y direction.

A fluid ejection system may include a media transport assembly and a printhead assembly having a fluid ejection device opposite the media transport assembly. The fluid ejection device may include a drop ejecting element and a fluid ejection chamber containing the drop ejection element. The fluid ejection chamber has an inlet and an outlet for fluid circulation through the fluid ejection chamber across the drop ejecting element. A particle tolerant architecture is between the inlet and the drop ejecting element.

An ink-jet recording apparatus may include an ink-jet head having: individual connection flow channels through which ink can be discharged from pressure chambers; and a common flow channel at which ink from the individual connection flow channels merges, wherein when the ink is ejected, in a nozzle through which the maximum amount of ink per unit time is ejected, the relationship of (Fn/Fi)≤10 is satisfied, Fn representing the amount of ink ejected per unit time from the nozzle, and Fi representing the average flow rate of ink discharged per unit time from the individual connection flow channels, and the relationship of (Rc/Rt)≤10 is satisfied, Rc representing the flow channel resistance of the common flow channel, and Rt representing the synthetic resistance of the individual connection flow channels.

The fluid ejection device includes a plurality of nozzles and a plurality of ejection chambers that includes a respective ejection chamber fluidically coupled to a respective nozzle. A plurality of inlet passages are fluidically coupled to the ejection chambers and input fluid to the ejection chambers at a first pressure. A plurality of outlet passages are fluidically coupled to the ejection chambers and output fluid from the ejection chambers at a second pressure that is less than the first pressure. Fluid circulates through the ejection chambers based on the pressure difference between the first and second pressure. The fluid ejection device also includes at least one micropump fluidically coupled to at least one ejection chamber to pump fluid through the at least one ejection chamber.

Provided is an inkjet head including a plurality of ink dischargers, a first common ejection flow path, and a second common ejection flow path. Each of the ink dischargers includes an ink storage, a pressure changer, a nozzle, and a first individual ejection flow path and a second individual ejection flow path that communicate to the ink storage and through which ink is ejected from fee ink storage but not supplied to the nozzle. The first common ejection flow path communicates to a plurality of first individual ejection flow paths of the respective plurality of the ink dischargers, and the second common ejection flow path communicates to a plurality of second individual ejection flow paths of the respective plurality of fee ink dischargers. A shape of a first section of first common ejection flow path into which ink flows from the plurality of first individual ejection flow paths is different from a shape of a second section of the second common ejection flow path into which ink flows from the plurality of second individual election flow paths.

A liquid discharge head includes nozzles, pressure chambers, a common supply channel, a common collection channel, and an air chamber. The nozzles are configured to discharge liquid. The pressure chambers are communicated with the nozzles, respectively. The common supply channel is communicated with the pressure chambers. The common supply channel includes a displaceable first region in a part of a wall of the common supply channel. The common collection channel is communicated with the pressure chambers. The common collection channel includes a displaceable second region in a part of a wall of the common collection channel. The air chamber faces a surface of the first region and a surface of the second region. The surface of the first region is opposite the wall of the common supply channel. The surface of the second region is opposite the wall of the common collection channel.

A liquid discharge head, includes an individual channel, and first and second common channels. The individual channel includes: a nozzle; a pressure chamber; a connection channel; a first communication channel; and a second communication channel. A first vector is defined such that a starting point and ending point are located on the connection channel, and a second vector is defined such that a starting point and an ending point are located on the second communication channel. A first angle formed by a projection vector of the first vector onto the first plane and a projection vector of the second vector onto the first plane is less than 90°. A second angle formed by a projection vector of the first vector onto the second plane and the second vector is less than 90°.

A fluidic die may include a fluid channel layer defining a number of fluid channels therein, a slot layer disposed on a side of the fluid channel layer, and a first fluid slot and a second fluid slot defined in the slot layer. At least one of the fluid channels fluidically couples the first fluid slot to the second fluid slot. The first fluid slot and the second fluid slot are defined in the slot layer along a length of the fluidic die.

An inkjet head includes a channel unit and a piezoelectric actuator. The piezoelectric actuator includes a first piezoelectric plate, a first electrode, a second piezoelectric plate, a second electrode, and a conductive member. The first piezoelectric plate includes a first surface. The first electrode is disposed on the first surface, and includes a first extending portion. The second piezoelectric plate includes a second surface. The second electrode is disposed on the second surface, and includes a second extending portion. The conductive member includes a first conductive portion and a second conductive portion. The first conductive portion is disposed on the first surface. The second conductive portion is disposed on the second surface. The conductive portion covers, in a first direction, a spacing that is located between the first extending portion and the second extending portion in a second direction.

A liquid discharge head includes: nozzles aligned on a nozzle surface; a supply manifold configured that a liquid is supplied therein from the outside of the liquid discharge head; a return manifold which is arranged between the nozzle surface and the supply manifold in a first direction, which is configured that the liquid is flown out therefrom to the outside of the liquid discharge head, and which is provided with a return damper part; and individual flow channels each of which corresponds to one of the nozzles. Each of the individual flow channels has a return throttle channel communicating the corresponding nozzle with the return manifold and being arranged between the return manifold and the nozzle surface in the first direction. The return manifold has a compliance larger than a compliance of the supply manifold.