The nozzle is provided so that a difference between a maximum value and a minimum value of distances, at the second position, between the center portion and edge portions of the nozzle is smaller than a difference between a maximum value and a minimum value of distances, at the first position, between the center portion and edge portions of the nozzle.

A liquid-ejecting-apparatus includes a nozzle that ejects liquid; a pressure-chamber-communicating with the nozzle; a pressure-change-portion that changes a pressure of the liquid in the pressure-chamber; and a controller that controls the pressure-change-portion. The controller executes first control of decreasing the pressure of the liquid in the pressure-chamber, hence pulling a center portion of a meniscus of the liquid in the nozzle toward the pressure-chamber, and forming a liquid-membrane with the liquid at an inner-wall-surface of the nozzle; and second control of, in a state in which the liquid-membrane is formed at the inner-wall-surface of the nozzle, increasing the pressure of the liquid in the pressure-chamber, hence inverting a shape of the center portion of the meniscus to a protruding shape protruding toward an opening of the nozzle and forming a liquid-column, and further, ejecting the liquid-column so as not to contact the liquid-membrane.

A liquid ejection head includes an ejection orifice for ejecting a liquid; a flow path in which an energy generating element is disposed, generates an energy to be used for ejecting the liquid; a liquid inside the flow path; an ejection orifice part that allows the ejection orifice and the flow path to communicate with each other; a supply flow path for supplying the liquid from the outside; and a recovery flow path for recovering the liquid to the outside. The moisture content of the liquid is 65 wt % or less. The liquid inside the flow path is circulated between the inside and the outside of the flow path.

A liquid ejecting head includes a substrate where a first nozzle and a second nozzle that eject liquid. The substrate is formed with a plurality of hole portions which communicate with a supply liquid chamber and in each of which a meniscus for absorbing pressure variation of liquid inside the supply liquid chamber is formed. The plurality of hole portions include a first hole portion. A distance between an end portion of a first supply flow path on a side of the supply liquid chamber and the first hole portion is equal to a distance between an end portion of a second supply flow path on a side of the supply liquid chamber and the first hole portion.

A liquid ejecting head having a supply port to which a liquid is supplied and a discharge port from which the liquid is discharged includes a pressurization chamber communicating with one of the supply port and the discharge port, a nozzle for discharging the liquid pressurized in the pressurization chamber, a first flow path extending in a first direction between the pressurization chamber and the nozzle, and a second flow path communicating with the other of the supply port and the discharge port, branching from the first flow path, and extending in a second direction that intersects the first direction. The first flow path includes a downstream first flow path close to the nozzle and an upstream first flow path closer to the pressurization chamber than the downstream first flow path, and a central axis of the downstream first flow path is positioned further in a third direction, which is an opposite direction from the second direction, than a central axis of the upstream first flow path.

A liquid ejecting head with a supply port and an outlet port includes a pressurization chamber communicating with one of the suplly port and the outlet port, a first flow path communicating with the pressurization chamber and extending in a first axial direction, a second flow path communicating with the other of the supply port and the outlet port and extending in a second axial direction orthogonal to the first axial direction, and a nozzle that is provided to branch from the second flow path and that discharges the liquid along the first axial direction. When viewed in a third axial direction orthogonal to the first axial direction and the second axial direction, an inner wall at a location at which the second flow path and the first flow path intersect includes an inclined surface inclined with respect to the first axial direction and the second axial direction.

Systems, methods, and software for fabricating a printhead. In one embodiment, a method comprises punching first nozzle holes in a first nozzle plate with a first punch, where each of the first nozzle holes includes a first converging section. The method further comprises punching second nozzle holes in a second nozzle plate with a second punch, where each of the second nozzle holes includes a second converging section. The method further comprises bonding the first nozzle plate and the second nozzle plate to form a nozzle plate stack, where the first nozzle holes and the second nozzle holes define nozzles of the printhead.

A liquid ejection head includes an ejection opening; a passage in which an energy generation element is disposed; an ejection opening portion that allows communication between the ejection opening and the passage; a supply passage for allowing the liquid to flow into the passage; and an outflow passage for allowing the liquid to flow out to the outside. An expression of H.sup.−0.34×P.sup.−0.66×W>1.7 is satisfied when a height of the passage is set to H [μm], a length of the ejection opening portion is set to P [μm], and a length of the ejection opening portion is set to W [μm].

A print component includes an array of fluidic actuation structures including a first column of fluidic actuating structures addressable by a set of actuation addresses, each fluidic actuating structure having a different one of the actuation addresses and having a fluidic architecture type, and a second column of fluidic actuating structures addressable by the set of actuation addresses. Each fluidic actuating structure of the second column has a different one of the actuation addresses and has a same fluidic architecture type as the fluidic actuating structure of the first column having the same address. An address bus communicates the set of addresses to the array of fluidic actuating structures, and a fire signal line communicates a plurality of fire pulse signal types to the array of fluidic actuating structures, the fire pulse signal type depending on the actuation address on the address bus.

A liquid ejection head includes a substrate, an ejection orifice forming member having a plurality of ejection orifices for ejecting a liquid, and an intermediate layer provided between the substrate and the ejection orifice forming member. The substrate has a supply path for supplying the liquid to the plurality of ejection orifices, the ejection orifice forming member has a common liquid chamber communicating with the plurality of ejection orifices, the supply path and the common liquid chamber communicate with each other via a filter portion including a plurality of holes formed in the intermediate layer, the ejection orifice forming member has a wall portion that protrudes into the common liquid chamber at a position opposed to the filter portion, and the wall portion extends along a direction intersecting an arrangement direction of the plurality of ejection orifices.