Abstract: Provided is a liquid ejecting head which includes a head main body which ejects ink from a liquid ejection surface and has a plurality of manifolds which store the ink, and a flow-path member in which a first distribution flow path and a second distribution flow path is provided to supply ink to the head main body, in which the plurality of manifolds are arranged on the same plane and the plurality of manifolds, the first distribution flow path, and the second distribution flow path are not disposed in the same plane.

Abstract: Provided is a liquid ejecting head which includes a head main body which has liquid ejection surface through which liquid is ejected, a flexible wiring substrate which is connected to the head main body, and a flow-path member having flow path through which liquid is supplied to the head main body. The flow-path member has an opening portion through which the substrate is inserted. The substrate extends to the flow-path member, with respect to the head main body. The substrate is inclined in a direction directed toward a first surface side of both surfaces of the substrate. In an area on a second surface side of both surfaces of the substrate, the flow path has a portion extending along the head main body.

Abstract: A flow path structure includes: a substrate that includes a first surface and a second surface on a side opposite to the first surface; a supply port formed on the first surface; a plurality of discharge ports formed on the second surface; grooves that are formed on the first surface so as to extend in an X direction and communicate with the supply ports and with the plurality of discharge ports via through-holes formed on the substrate; and a sealing portion that is disposed on the first surface and seals each groove.

Abstract: In an inactive region, a farthest dummy electrode formed in a base end portion and an isolated dummy electrode island are located at positions along an extension from an individual internal electrode toward the base end portion. Such a configuration allows the area of the dummy electrode to be reduced, compared with a dummy electrode continuously formed in the inactive region. Therefore, the cost incurred by the dummy electrode is reduced, which leads to reduction in manufacturing cost of a piezoelectric unit.

Abstract: There is provided a liquid-ejecting head including: a fixing board which can abut against a cap for a liquid-ejecting surface at a ring-shaped abutting area; and a driving element for ejecting liquid via nozzle openings provided on the liquid-ejecting surface. The fixing board has an acute-angle portion and an obtuse-angle portion. The abutting area includes: a pair of first-curved parts corresponding to the acute-angle portion; a pair of second-curved parts corresponding to the obtuse-angle portion; and a plurality of straight-line parts which can connect the two curved parts. On the liquid-ejecting surface, among a first-intersection point on virtual lines extended from each of the two straight-line parts connected the first-curved part and a second-intersection point on virtual lines extended from each of the two straight-line parts connected to the second-curved part, the fixing board has reference holes positioned nearer to the first-intersection point than the second-intersection point.

Abstract: There is provided a liquid-ejecting apparatus which ejects liquid from a liquid-ejecting head toward a recording medium in a first direction, including: the liquid-ejecting head which ejects the liquid from nozzle openings of a liquid-ejecting surface; a fixing board which is provided on the liquid-ejecting surface side of the liquid-ejecting head; and a wiper which relatively moves in a second direction. The plurality of fixing boards are disposed along the second direction. The fixing board includes: a bending portion in which an outer circumferential side part is bent to the liquid-ejecting head side; and an edge portion in which the outer circumferential side part is not bent. The plurality of edge portions are disposed on a side further outward than the nozzle openings in the first direction. The wiper wipes the liquid-ejecting surface side of the plurality of fixing boards in the second direction.

Abstract: 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.

Abstract: There is provided a liquid-ejecting head including: a fixing board which can abut against a cap for a liquid-ejecting surface at a ring-shaped abutting area; and a driving element for ejecting liquid via nozzle openings provided on the liquid-ejecting surface. The fixing board has an acute-angle portion and an obtuse-angle portion. The abutting area includes: a pair of first-curved parts corresponding to the acute-angle portion; a pair of second-curved parts corresponding to the obtuse-angle portion; and a plurality of straight-line parts which can connect the two curved parts. On the liquid-ejecting surface, among a first-intersection point on virtual lines extended from each of the two straight-line parts connected the first-curved part and a second-intersection point on virtual lines extended from each of the two straight-line parts connected to the second-curved part, the fixing board has reference holes positioned nearer to the first-intersection point than the second-intersection point.

Abstract: In a liquid ejecting head, a vibration plate includes an effective displacement portion provided for each pressure chamber and an island-shaped part which is provided in the effective displacement portion at a position on the opposite side to the pressure chamber and to which one end portion of a piezoelectric vibrator is bonded; the piezoelectric vibrator has a laminate structure in which electrodes and piezoelectric material are alternately laminated; a layer at an end of one side of the piezoelectric vibrator in the laminating direction is formed of an external electrode, while a layer at an end of the other side thereof in the same direction is formed of a piezoelectric material; and the piezoelectric vibrator is disposed so as to be shifted toward the other side in the laminating direction with respect to the effective displacement portion.

Abstract: A liquid ejecting head includes nozzles for ejecting liquid; pressure generation chambers, each in fluid communication with one of the nozzles; and a manifold substrate with manifolds disposed therein. Each manifold supplies liquid to at least one of the pressure generation chambers. The liquid ejecting head also includes a head case with a piezoelectric element housing unit. Piezoelectric elements, for changing pressure of liquid within the pressure generation chambers, are provided in the piezoelectric element housing unit. The liquid ejecting head also includes a vibrating element for absorbing pressure changes in the liquid within the manifolds, cavities provided on the vibrating element at positions that correspond to positions of the manifolds, and an atmosphere exposure channel that fluidly connects one of the cavities to the atmosphere. At least one other one of the cavities is in fluid communication with the atmosphere exposure channel via the first cavity.

Abstract: A liquid ejecting apparatus is provided which can suppress bubbles from remaining in liquid flow paths. The liquid ejecting apparatus includes a head that includes a flow path member in which a plurality of ink flow paths are formed, a head main body to which ink is supplied form the flow path member and which ejects the ink to a recording sheet, and a moving element that causes the head to perform a reciprocating moving motion on the recording sheet in the X direction. In the plurality of ink flow paths, the longest ink flow path has the smallest Y direction component on an XY surface (a horizontal surface) of the plurality of ink flow paths.

Abstract: A flow path forming body that includes a liquid supply path, and a mounting section; a filter that is fixedly attached to the mounting section so as to cover an opening of the liquid supply path; and a seal member disposed on a circumference of the mounting section and made of an elastic material are provided, wherein a buffer chamber is provided in the liquid supply path downstream of the filter, and an air bubble discharge section having a wall is provided in a region at least distant from the opening of the liquid supply path downstream of the buffer chamber in a plane direction of the filter such that the wall is closer to the filter than to the buffer chamber and has a width in the plane direction of the filter which is larger than that of the buffer chamber.

Abstract: A liquid ejecting apparatus is provided which can suppress bubbles from remaining in liquid flow paths. The liquid ejecting apparatus includes a head that includes a flow path member in which a plurality of ink flow paths are formed, a head main body to which ink is supplied form the flow path member and which ejects the ink to a recording sheet, and a moving element that causes the head to perform a reciprocating moving motion on the recording sheet in the X direction. In the plurality of ink flow paths, the longest ink flow path has the smallest Y direction component on an XY surface (a horizontal surface) of the plurality of ink flow paths.

Abstract: A liquid ejecting head includes nozzles for ejecting liquid; pressure generation chambers, each in fluid communication with one of the nozzles; and a manifold substrate with manifolds disposed therein. Each manifold supplies liquid to at least one of the pressure generation chambers. The liquid ejecting head also includes a head case with a piezoelectric element housing unit. Piezoelectric elements, for changing pressure of liquid within the pressure generation chambers, are provided in the piezoelectric element housing unit. The liquid ejecting head also includes a vibrating element for absorbing pressure changes in the liquid within the manifolds, cavities provided on the vibrating element at positions that correspond to positions of the manifolds, and an atmosphere exposure channel that fluidly connects one of the cavities to the atmosphere. At least one other one of the cavities is in fluid communication with the atmosphere exposure channel via the first cavity.

Abstract: In an inactive region, a farthest dummy electrode formed in a base end portion and an isolated dummy electrode island are located at positions along an extension from an individual internal electrode toward the base end portion. Such a configuration allows the area of the dummy electrode to be reduced, compared with a dummy electrode continuously formed in the inactive region. Therefore, the cost incurred by the dummy electrode is reduced, which leads to reduction in manufacturing cost of a piezoelectric unit.

Abstract: A liquid ejecting head includes nozzles for ejecting liquid; pressure generation chambers, each in fluid communication with one of the nozzles; and a manifold substrate with manifolds disposed therein. Each manifold supplies liquid to at least one of the pressure generation chambers. The liquid ejecting head also includes a head case with a piezoelectric element housing unit. Piezoelectric elements, for changing pressure of liquid within the pressure generation chambers, are provided in the piezoelectric element housing unit. The liquid ejecting head also includes a vibrating element for absorbing pressure changes in the liquid within the manifolds, cavities provided on the vibrating element at positions that correspond to positions of the manifolds, and an atmosphere exposure channel that fluidly connects one of the cavities to the atmosphere. At least one other one of the cavities is in fluid communication with the atmosphere exposure channel via the first cavity.

Abstract: In an inactive region, a farthest dummy electrode formed in a base end portion and an isolated dummy electrode island are located at positions along an extension from an individual internal electrode toward the base end portion. Such a configuration allows the area of the dummy electrode to be reduced, compared with a dummy electrode continuously formed in the inactive region. Therefore, the cost incurred by the dummy electrode is reduced, which leads to reduction in manufacturing cost of a piezoelectric unit.

Abstract: An ink cartridge is formed with a cartridge-side engaging portion having a form inherent among a plurality of ink cartridges, and a cartridge mounting chamber in which the ink cartridges are mounted is formed with cartridge-mounting-chamber-side engaging portions, and these engaging portions constitute an erroneous mounting preventing structure.

Abstract: A flow path forming body that includes a liquid supply path, and a mounting section; a filter that is fixedly attached to the mounting section so as to cover an opening of the liquid supply path; and a seal member disposed on a circumference of the mounting section and made of an elastic material are provided, wherein a buffer chamber is provided in the liquid supply path downstream of the filter, and an air bubble discharge section having a wall is provided in a region at least distant from the opening of the liquid supply path downstream of the buffer chamber in a plane direction of the filter such that the wall is closer to the filter than to the buffer chamber and has a width in the plane direction of the filter which is larger than that of the buffer chamber.

Abstract: A diaphragm unit includes an elastic film unit which seals an opening portion of a pressure chamber, and an island unit which is provided on the elastic film unit and to which a tip portion of a piezoelectric vibrator is joined. The width of the center portion of the island unit in the longitudinal direction is set to be narrower than the width of both end portions of the island unit in the longitudinal direction. The dimension of the center portion of the island unit in the longitudinal direction is shorter than the dimension of the piezoelectric vibrator in the same direction.