Seiko Epson Corporation

Shohei Mizuta

Yuma Fukuzawa

Yoichi Naganuma

Motoki Takabe

Shunya Fukuda

Shotaro Tamai

Toshiro Murayama

Takanori Aimono

Shun Katsuie

Eiju Hirai

Hiroaki Okui

Takashi Aoki

Akira Miyagishi

Yu Shiozawa

Akinori Taniuchi

Daisuke Yamada

Naohiro Nakagawa

Nobuhiro Naito

Masahiro Asami

Madoka Ito

Ito Madoka

A liquid ejecting head includes: a nozzle; first to fourth pressure chambers; a communication flow path communicating between the nozzle and the first to fourth pressure chambers; first to fourth driving elements; a first common liquid chamber communicating with the first and the second pressure chambers; and a second common liquid chamber communicating with the third and the fourth pressure chambers. A first joining position from the first pressure chamber and the second pressure chamber to the nozzle is closer to end portions of the first pressure chamber and the second pressure chamber on a nozzle side than to the nozzle, and a second joining position from the third pressure chamber and the fourth pressure chamber to the nozzle is closer to end portions of the third pressure chamber and the fourth pressure chamber on the nozzle side than to the nozzle.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head includes a pressure chamber substrate having a pressure chamber, a drive element, a communication substrate having a supply communication flow path and a nozzle communication flow path at a position different from the supply communication flow path, and a coupling substrate having a supply port and the supply communication flow path and a discharge port, in which the pressure chamber substrate has a partition wall, and the communication substrate includes a first region bonded to the coupling substrate and overlapping the pressure chamber between the supply communication flow path and the nozzle communication flow path when viewed in a thickness direction, and a second region bonded to the coupling substrate and overlapping the partition wall at a position adjacent to the first region via an opening of the supply communication flow path when viewed in the thickness direction of the pressure chamber substrate.

A liquid ejecting head includes a first driving element, a first pressure chamber, and a first nozzle that is formed in a nozzle substrate, in which the first nozzle includes a first upstream nozzle portion including a first supply opening opened in a second surface of the nozzle substrate and a first bottom surface and a first downstream nozzle portion including a first ejection opening opened in a first surface of the nozzle substrate and a first coupling section opened in the first bottom surface, when viewed in a thickness direction of the nozzle substrate, a sectional area of the first upstream nozzle portion is larger than a sectional area of the first downstream nozzle portion, and a center of gravity of the first coupling section is positioned between a center of gravity of the first ejection opening and a center of gravity of the first bottom surface.

Liquid ejecting head, liquid ejecting apparatus, and nozzle substrate

A liquid ejecting head includes: a nozzle; first to fourth pressure chambers; a communication flow path coupled to the nozzle and communicating between the nozzle and the first to fourth pressure chambers; first to fourth flow paths coupling the communication flow path and the first to fourth pressure chambers; a first-common-liquid-chamber communicating with the first-pressure-chamber and the second-pressure-chamber; and a second-common-liquid-chamber communicating with the third-pressure-chamber and the fourth-pressure-chamber. The first-flow-path and the second-flow-path are arranged side by side in a first-direction, the third-flow-path and the fourth-flow-path are arranged side by side in the first-direction, and the first-flow-path and the second-flow-path, and the third-flow-path and the fourth-flow-path are arranged to be shifted in a second-direction orthogonal to the first-direction. The first-flow-path is shifted from each of the third-flow-path and the fourth-flow-path in the first-direction, and the second-flow-path is shifted from each of the third-flow-path and the fourth-flow-path in the first-direction.

A liquid ejecting head includes a pressure chamber substrate in which wall surface portions of a pressure chamber are formed, an diaphragm that forms a top surface portion of the pressure chamber, a piezoelectric element that is provided on the diaphragm, and a communication plate, in which an upper surface of the communication plate is bonded to a lower surface of the pressure chamber substrate by an adhesive, the upper surface of the communication plate is provided with a supply opening and a discharge opening, the pressure chamber is longitudinal in an X direction, acute angle portions are formed by the wall surface portions that mutually form an acute angle at each end in the X direction of a bottom surface portion of the pressure chamber, and the acute angle portions do not overlap with the supply opening and the discharge opening in a laminating direction.

A liquid ejecting head includes a first pressure compartment extending in a first direction; a second pressure compartment extending in the first direction; a first communication passage continuous from the first pressure compartment and extending in the first direction; a second communication passage continuous to the second pressure compartment and extending in the first direction; a third communication passage continuous from the first communication passage and extending in a second direction intersecting with the first direction; a fourth communication passage continuous to the second communication passage and extending in the second direction; a fifth communication passage continuous from the third communication passage and continuous to the fourth communication passage and extending in the first direction; and a nozzle provided on the fifth communication passage.

an adhesive having a first amount exists on a side of the first piezoelectric element line, of a joint of the wiring substrate and the pressure chamber substrate or the vibration plate, an adhesive having a second amount that is larger than the first amount exists on a side of the second piezoelectric element line of the wiring substrate, of the joint, and a first discharging element related to the first piezoelectric element line is different from a second discharging element related to the second piezoelectric element line.

Liquid discharging head and liquid discharging apparatus

The position information includes first position information about a position, at a first timing, of a droplet ejected from a first nozzle, which is one of the plurality of nozzles, and traveling in air, and second position information about a position, at the first timing, of a droplet ejected from a second nozzle, which is one of the plurality of nozzles N and is different from the first nozzle, and traveling in air.

Liquid ejecting apparatus, inspection method, and storage medium

A liquid ejecting head includes: a pressure chamber substrate; and a communication plate, in which the pressure chamber substrate includes a first pressure chamber that extends in a first direction and applies pressure to a liquid, and a first supply channel, and the communication plate includes a first communication channel that extends in a second direction intersecting with the first direction and communicates with the first supply channel, and a second supply channel that communicates with the first supply channel and the first pressure chamber.

In this liquid ejecting head, the pressure chamber extends in a second direction crossing a first direction, the first direction being a direction from the pressure chamber to the nozzle. The pressure chamber and the absorbing chamber are disposed at a same position in the first direction and next to each other in the second direction. The actuator is disposed on an opposite side in the first direction with respect to the pressure chamber. The absorption member is disposed on the opposite side in the first direction with respect to the absorbing chamber, the absorption member including at least part of members constituting the actuator.

The communication plate has a first layer that defines a wall surface of the communication flow channel, a second layer stacked on a side of the first layer opposite to the wall surface, and a third layer stacked on a side of the second layer opposite to the first layer, and the thermal expansion coefficient of the second layer is smaller than the thermal expansion coefficient of the first layer and is smaller than the thermal expansion coefficient of the third layer.

Liquid discharge head and liquid discharge apparatus

Provided is a liquid discharging head including: a nozzle discharging a liquid; a chamber plate having a plurality of pressure chambers, a drive element provided to correspond to each of the pressure chambers, and a plurality of lead electrodes for supplying an electric signal to the drive element; and a circuit substrate having a terminal coupled to the lead electrode. A first pressure chamber and a second pressure chamber communicate with the nozzle in common. The chamber plate includes a first individual lead electrode for the drive element corresponding to the first pressure chamber and a second individual lead electrode for the drive element corresponding to the second pressure chamber. The terminal of the circuit substrate is coupled so as to overlap the first individual lead electrode and the second individual lead electrode in plan view.

Provided is a liquid discharging head including a nozzle discharging a liquid; a chamber plate in which a plurality of pressure chambers are arranged side by side on a first surface side; and a flow path plate having a second surface formed with an opening of a communication flow path, wherein a first region of a partition wall between a first pressure chamber and a second pressure chamber adjacent to each other among the plurality of pressure chambers is constrained by being bonded to the second surface of the flow path plate, and a second region of the partition wall overlaps the opening of the communication flow path in plan view.

Provided is a liquid discharging head including: a nozzle discharging a liquid; a pressure chamber row in which a plurality of pressure chambers communicating with the nozzle are arranged side by side along a first axis direction; and a first reservoir and a second reservoir commonly communicating with the plurality of pressure chambers, in which the pressure chamber row includes a first pressure chamber communicating with the first reservoir and a second pressure chamber communicating with the second reservoir, and the liquid discharging head further comprises a communication flow path causing the first pressure chamber and the second pressure chamber to commonly communicate with one nozzle.

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.

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Nagano, Japan

Shohei Mizuta