Abstract: A liquid ejecting head includes: head chips including a first-head-chip and a second-head-chip; a holder holding the head chips; and a heater along a direction parallel to a nozzle surface. The first-head-chip and the second-head-chip are disposed to be offset from each other in both a first-direction and a second-direction parallel to the nozzle surface and intersecting with each other. When a first-side is one of the four sides of a virtual rectangle circumscribing the aggregate of the head chips and a second-side and a third-side are coupled to both ends of the first-side, the first-head-chip is in contact with the first-side and the third-side and the second-head chip is in contact with the second-side. The heater overlaps the head chips. A first-region surrounded by the first-side, the second-side, the first-head-chip, and the second-head-chip includes a first-outside-part positioned outside the outer edge of the heater.

Abstract: A liquid ejecting head supported by a support body includes: a first head chip; a holder having a holding portion holding the first head chip and a flange portion; and a heater heating the holding portion, in which the holding portion has a heat receiving portion receiving heat from the heater, and a shortest path of heat transferred through the holder from the heat receiving portion to the flange portion is bent or curved at two or more points.

Abstract: A liquid ejecting head includes: a plurality of head chips having nozzles; a holder holding the plurality of head chips; and a planar heater disposed on the holder and heating the holder, in which the heater includes an outer peripheral region along an outer edge of the holder and a middle region positioned inside the outer peripheral region in a plan view, and a heat generation amount per unit time of the outer peripheral region is larger than a heat generation amount per unit time of the middle region.

Abstract: A liquid ejecting head includes: multiple head chips; a first board that is a rigid board coupled to multiple flexible boards mounted on the respective head chips; and a second board that is disposed opposite the head chips with the first board therebetween and that is a rigid board provided with a connector. The first board has a first and second board-to-board connectors; the second board has a third and fourth board-to-board connectors. The first board-to-board connector mates with the third board-to-board connector so that the first board-to-board connector is coupled to the third board-to-board connector. The second board-to-board connector mates with the fourth board-to-board connector so that the second board-to-board connector is coupled to the fourth board-to-board connector. The connector is electrically coupled to both the third and fourth board-to-board connectors.

Abstract: A liquid ejecting head includes: a nozzle row configured by arranging nozzles ejecting a liquid in a first-direction in a second-direction orthogonal to the first-direction; a drive element; and stacked components defining a common liquid chamber communicating with the nozzle row, in which the stacked components include a filter partitioning the common liquid chamber into an upstream common liquid chamber and a downstream common liquid chamber, a first-case defining a first-common-liquid-chamber-portion as a part of the upstream common liquid chamber and stacked on the filter, and a second-case defining a second-common-liquid-chamber-portion as a part of the upstream common liquid chamber and stacked on the first-case, the second-common liquid-chamber-portion is positioned in a direction opposite to the first-direction from the drive element, and a width of the second-common-liquid-chamber-portion in a third-direction orthogonal to the first-direction and the second-direction is longer than a width of the fir

Abstract: There is provided a liquid ejecting head which is long in a first direction and short in a second direction, including: a first introduction section; a second introduction section; a first filter chamber group having a first filter chamber and a second filter chamber; a second filter chamber group having a third filter chamber and a fourth filter chamber; a first supply flow path for supplying the liquid from the first introduction section to the first filter chamber group; and a second supply flow path for supplying the liquid from the second introduction section to the second filter chamber group, in which the first introduction section, the second introduction section, the first filter chamber group, and the second filter chamber group are arranged side by side in this order in the first direction.

Abstract: A plurality of head chips including: a nozzle plate having a plurality of nozzles configured to eject a liquid in a first direction, and a case having one or more first flow paths communicating with at least a part of the plurality of nozzles; a holder to which the plurality of head chips are fixed, which includes metal or ceramics, and which has a plurality of second flow paths communicating with at least one of the plurality of first flow paths; and a heater configured to heat the holder.

Abstract: There is provided a liquid ejecting head including: first and second nozzle rows extending in a first direction; a first supply flow path; a first filter chamber having a first inlet; and a second filter chamber having a second inlet, in which the first and second nozzle rows are shifted from each other in both the first direction and a second direction orthogonal to the first direction, the first supply flow path has a branch flow path for distributing the liquid between the first filter chamber and the second filter chamber at a branch position, the branch position is disposed between the first filter chamber and the second filter chamber in a plan view, and the first and second inlets are disposed at a part where the first filter chamber and the second filter chamber overlap each other when viewed in the second direction.

Abstract: A liquid ejecting head includes: a plurality of head chips having nozzles; a holder holding the plurality of head chips; and a planar heater disposed on the holder and heating the holder, in which the heater includes an outer peripheral region along an outer edge of the holder and a middle region positioned inside the outer peripheral region in a plan view, and a heat generation amount per unit time of the outer peripheral region is larger than a heat generation amount per unit time of the middle region.

Abstract: A liquid ejecting head supported by a support body includes: a first head chip; a holder having a holding portion holding the first head chip and a flange portion; and a heater heating the holding portion, in which the holding portion has a heat receiving portion receiving heat from the heater, and a shortest path of heat transferred through the holder from the heat receiving portion to the flange portion is bent or curved at two or more points.

Abstract: A liquid ejecting head includes: head chips including a first-head-chip and a second-head-chip; a holder holding the head chips; and a heater along a direction parallel to a nozzle surface. The first-head-chip and the second-head-chip are disposed to be offset from each other in both a first-direction and a second-direction parallel to the nozzle surface and intersecting with each other. When a first-side is one of the four sides of a virtual rectangle circumscribing the aggregate of the head chips and a second-side and a third-side are coupled to both ends of the first-side, the first-head-chip is in contact with the first-side and the third-side and the second-head chip is in contact with the second-side. The heater overlaps the head chips. A first-region surrounded by the first-side, the second-side, the first-head-chip, and the second-head-chip includes a first-outside-part positioned outside the outer edge of the heater.

Abstract: A liquid ejecting head includes: a plurality of head chips having a nozzle surface; a thermally conductive holder holding the plurality of head chips; a thermally conductive flow path structure provided with a flow path of a liquid supplied to the plurality of head chips; and a planar heater disposed between the holder and the flow path structure and along a direction parallel to the nozzle surface, in which the heater overlaps the plurality of head chips in a plan view.

Abstract: A liquid ejecting head unit configured to eject a liquid includes a flow channel member, and a liquid ejecting head configured to eject the liquid supplied from the flow channel member, in which the flow channel member includes a flow channel structure having a supply flow channel through which the liquid supplied from the outside flows, and a supply protrusion that protrudes from the flow channel structure and has a supply port for supplying the liquid from the outside to the supply flow channel, a wall surface of the supply flow channel is made of a resin, and at least a part of the supply protrusion is made of a metal.

Abstract: A liquid ejecting head unit includes an ejecting surface in which nozzles for ejecting a liquid are formed, and a first and a second circuit substrates for ejecting the liquid from the nozzles, in which a planar shape of the ejecting surface includes a first, a second and a third portions. A center line parallel to a long side of a rectangle of a minimum area surrounding the ejecting surface passes the first portion but not the second and third portions. The second and third portions are arranged adjacently to the first portion interposed therebetween. The first circuit substrate is positioned in the first and second portions. The second circuit substrate is positioned in at least one of the first and third portions.

Abstract: A liquid ejecting head including: a first liquid ejecting portion configured to eject a liquid; a second liquid ejecting portion configured to eject a liquid; a first supply flow path configured to supply the liquid to the first liquid ejecting portion and the second liquid ejecting portion; and a temperature detection element for measuring a temperature of the liquid. The first supply flow path includes a common portion to which the liquid is supplied; a first branch portion that communicates with the common portion at a communication position, and that supplies the liquid from the common portion to the first liquid ejecting portion; and a second branch portion that communicates with the common portion at the communication position, and that supplies the liquid from the common portion to the second liquid ejecting portion. The temperature detection element is disposed at a vicinity of the communication position.

Abstract: There is provided a liquid ejecting unit that ejects liquid from a plurality of nozzles, in which the planar shape of the ejecting face on which the nozzles are formed is a shape in which a first portion that passes through the center line parallel to the long side of the rectangle of the minimum area including the ejecting face and a second portion that does not pass through the center line are arranged in the direction of the long side.

Abstract: A first flow path is provided between the first layer and the second layer, a second flow path is provided between the second layer and the third layer, a filter chamber is provided inside the third layer, and the second layer is thinner than each of the first layer and the third layer.

Abstract: There is provided a liquid ejecting head including: first and second nozzle rows extending in a first direction; a first supply flow path; a first filter chamber having a first inlet; and a second filter chamber having a second inlet, in which the first and second nozzle rows are shifted from each other in both the first direction and a second direction orthogonal to the first direction, the first supply flow path has a branch flow path for distributing the liquid between the first filter chamber and the second filter chamber at a branch position, the branch position is disposed between the first filter chamber and the second filter chamber in a plan view, and the first and second inlets are disposed at a part where the first filter chamber and the second filter chamber overlap each other when viewed in the second direction.

Abstract: There is provided a liquid ejecting head which is long in a first direction and short in a second direction, including: a first introduction section; a second introduction section; a first filter chamber group having a first filter chamber and a second filter chamber; a second filter chamber group having a third filter chamber and a fourth filter chamber; a first supply flow path for supplying the liquid from the first introduction section to the first filter chamber group; and a second supply flow path for supplying the liquid from the second introduction section to the second filter chamber group, in which the first introduction section, the second introduction section, the first filter chamber group, and the second filter chamber group are arranged side by side in this order in the first direction.

Abstract: A channel structure includes a base body having a first surface, a second surface that is opposite from the first surface, and a side surface that extends in a direction intersecting the first surface. The base body includes a first channel having a supply port into which a liquid is supplied, a liquid storing chamber formed in the first surface and storing the liquid, a second channel having a discharge port through which the liquid in the liquid storing chamber is discharged, and a pressure adjusting unit that supplies the liquid from the first channel to the liquid storing chamber according to pressure in the liquid storing chamber and that located between the first surface and the second surface. The supply port is formed in the second surface of the base body or formed in the side surface of the base body.