Printheads for a jetting apparatus. In one embodiment, a printhead comprises a plurality of flow-through jetting channels each configured to jet a print fluid out of a nozzle. The printhead further includes a supply manifold fluidly coupled to the flow-through jetting channels, a return manifold fluidly coupled to the flow-through jetting channels, and one or more bypass manifolds fluidly coupled between the supply manifold and the return manifold.

A liquid discharge head includes a common flow channel extending along a first direction, and individual flow channels arranged along the first direction. Each individual flow channel includes a first pressure chamber and a second pressure chamber arranged along the first direction, each of which communicates with the common flow channel, a nozzle located away from the first and second pressure chambers in a second direction orthogonal to the first direction, and a connection flow channel connecting the first pressure chamber, the second pressure chamber, and the nozzle with each other. One end of the connection flow channel in the second direction communicates with the first pressure chamber and the second pressure chamber, and the other end thereof in the second direction communicates with the nozzle. The connection flow channel extends along the second direction from the one end to the other end thereof in the second direction.

Provided is a liquid ejection head including: a liquid ejection part including a pressure chamber, a nozzle, and a liquid discharge flow path; a liquid storage part including a supply liquid chamber and a discharge liquid chamber; and a flow path part including an intermediate supply flow path and an intermediate discharge flow path. The intermediate supply flow path and the intermediate discharge flow path are formed such that a minimum distance between an opening of the intermediate supply flow path on a side facing the liquid storage part and an opening of the intermediate discharge flow path on the side facing the liquid storage part is greater than a minimum distance between a liquid inlet and a liquid discharge outlet on a predetermined first opening forming surface.

A liquid ejecting apparatus is provided comprising: a liquid ejecting head; and a controller. The liquid ejecting head including: a nozzle from which a liquid is ejected; a first communication passage that is in communication with the first nozzle; a first pressure compartment; a first drive element that changes a pressure of the first pressure compartment; a first passage that connects the first pressure compartment and the first communication passage; a second pressure compartment; a second drive element that changes a pressure of the second pressure compartment; a second passage that connects the second pressure compartment and the first communication passage. The controller performs a first mode and a second mode, the first mode being a mode in which liquid flows from the first pressure compartment through the first communication passage to the nozzle, and liquid flows the second pressure compartment through the second communication passage to the nozzle, and, the second mode being a mode in which liquid flows from the first pressure compartment through the first communication passage to the nozzle, and liquid flows from the nozzle through the second communication passage to the second pressure compartment.

A liquid discharge head includes: an individual channel having an inlet and an outlet, the individual channel including: a nozzle, an upstream-side pressure chamber arranged between the inlet and the nozzle, a downstream-side pressure chamber arranged between the outlet and the nozzle, an upstream-side throttle channel connecting the inlet and the upstream-side pressure chamber, and a downstream-side throttle channel connecting the outlet and the downstream-side pressure chamber; a supply channel connected to the inlet and configured to supply liquid to the individual channel; a recovery channel connected to the outlet and configured to recover the liquid from the individual channel; an upstream-side actuator configured to apply pressure to the liquid inside the upstream-side pressure chamber; and a downstream-side actuator configured to apply the pressure to the liquid inside the downstream-side pressure chamber. The channel resistance of the downstream-side throttle channel is smaller than that of the upstream-side throttle channel.

A liquid ejecting head includes: a nozzle from which a liquid is ejected; a communication passage that is in communication with the nozzle; a first pressure compartment that is connected to the communication passage through a first passage; a second pressure compartment that is connected to the communication passage through a second passage; a first drive element that changes pressure of the first pressure compartment; and a second drive element that changes pressure of the second pressure compartment.

A liquid discharge head includes: individual channels; a supply channel connected to inlets of the individual channels and through which liquid is supplied to the individual channels; and a recovery channel connected to outlets of the induvial channels and through which the liquid is recovered from the individual channels. Each of the induvial channels includes: a nozzle; an upstream-side pressure chamber disposed between the nozzle and the supply channel; a downstream-side pressure chamber disposed between the nozzle and the recovery channel; an upstream-side throttle channel connecting the supply channel and the upstream-side pressure chamber; and a downstream-side throttle channel connecting the recovery channel and the downstream-side pressure chamber. A channel resistance of the upstream-side throttle channel is smaller than a channel resistance of the downstream-side throttle channel.

A liquid jetting apparatus includes a nozzle plate having a nozzle, and a channel unit having a first surface facing and joined with the nozzle plate. The channel unit has a first channel member having the first surface, and a second channel member having a second surface facing and joined with the first channel member. The second channel member is formed with a first pressure chamber, a second pressure chamber, a first opening and a second opening defined by the second surface, a first connecting channel connecting the first pressure chamber and the first opening, and a second connecting channel connecting the second pressure chamber and the second opening. The first channel member is formed with a third connecting channel connecting the first pressure chamber and the second pressure chamber.

A liquid jetting apparatus includes a nozzle plate having a nozzle, and a channel unit having a first surface facing and joined with the nozzle plate. The channel unit has a first channel member having the first surface, and a second channel member having a second surface facing and joined with the first channel member. The second channel member is formed with a first pressure chamber, a second pressure chamber, a first opening and a second opening defined by the second surface, a first connecting channel connecting the first pressure chamber and the first opening, and a second connecting channel connecting the second pressure chamber and the second opening. The first channel member is formed with a third connecting channel connecting the first pressure chamber and the second pressure chamber.

Provided is a liquid discharging head including: a nozzle discharging a liquid; a chamber plate having a plurality of pressure chambers, drive elements provided in correspondence with each pressure chamber, and a plurality of lead electrodes for supplying electric signals to the drive elements; and a circuit substrate having terminals coupled to the lead electrodes. A first pressure chamber and a second pressure chamber communicate with the nozzle in common. A first segment electrode is formed so as to overlap the first pressure chamber and is not to overlap the second pressure chamber in plan view. A second segment electrode is formed so as to overlap the second pressure chamber and is not to overlap the first pressure chamber in plan view. The first segment electrode and the second segment electrode are coupled to the same lead electrode.