A liquid ejecting head includes: a head main body for ejecting liquid from nozzle openings on a liquid ejecting surface provided with the plurality of nozzle openings; a maintaining member which is adhered to the head main body at a surface side opposite to the liquid ejecting surface side of the head main body in a direction perpendicular to the liquid ejecting surface; and a fixing board which is provided at a side opposite to the maintaining member with respect to the head main body. The fixing board includes a bending portion which is bent to the head main body side. The bending portion is adhered to a side surface of the maintaining member. The head main body is disposed in a space formed by adhering the maintaining member and the fixing board to each other.

In an embodiment, a fluid flow structure includes a micro device embedded in a molding, and a fluid feed hole formed through the micro device. A fluid channel is fluidically coupled to the fluid feed hole and includes a first compression molded channel segment and a second material ablated channel segment.

A liquid ejecting apparatus includes a liquid ejecting head including head chips each including a nozzle plate, a holder that is formed of resin, holds the head chips, and includes a flow path for supplying the liquid to each of the head chips, a holder cover that is formed of a material having a higher thermal conductivity than a thermal conductivity of the holder and houses the head chips and the holder, and a fixing plate that is formed of metal and to which the holder cover and the head chips are fixed, a carriage on which the liquid ejecting head is mounted, and a heater that is mounted on the carriage and heats the liquid inside each of the head chips via the holder cover and the fixing plate.

A liquid ejecting apparatus includes a print head, in which the print head includes a substrate having first, second, third and fourth sides, a first surface, a second surface, a connector, a first integrated circuit, and a second integrated circuit, the connector includes a first end with a shortest distance to the third side and a second end with a shortest distance to the fourth side and is provided on the first surface so that a plurality of terminals are arranged along the first side, the first integrated circuit is provided on the second surface, a shortest distance between the first end and the first integrated circuit is shorter than a shortest distance between the second end and the first integrated circuit, and a shortest distance between the second end and the second integrated circuit is shorter than a shortest distance between the first end and the second integrated circuit.

A liquid ejecting apparatus includes a print head, a digital signal output circuit, and a liquid accommodating container, in which the print head includes a supply port to which the liquid is supplied from the liquid accommodating container, a nozzle plate having a plurality of nozzles that eject the liquid, a substrate that has a first surface and a second surface different from the first surface, a connector to which the digital signal is input, an integrated circuit to which the digital signal is input via the connector and that outputs an abnormality detection signal indicating presence or absence of an abnormality in the print head, and a first capacitor electrically coupled to the integrated circuit, the connector and the first capacitor are provided on the first surface, and the integrated circuit is provided on the second surface.

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.

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.

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.

In one example, a multi-part flow structure with multiple flow passages includes a first part sandwiched between a second part and a third part, the parts joined together with adhesive along bonding surfaces surrounding the flow passages where each of the bonding surfaces on one part is symmetrical to and diverges from a corresponding one of the bonding surfaces on another part.

A head attachment/detachment jig that is used for attachment/detachment of a head which ejects ink droplets and is fixed on a base member by a fastener member when replacing the head, the head attachment/detachment jig, includes a frame member that is attachable to and detachable from the head; and a tip tool that has a tip part and a top part, and is held to be turnable and movable forward and backward with respect to the frame member, wherein the tip part of the tip tool has a shape that is capable of turning the fastener member, and the top part of the tool has a shape that is formed to be capable of turning the tip tool by a different tool from the tip tool.