Abstract: A fluid discharging apparatus includes an accommodation unit that accommodates a fluid, a discharge port that communicates with the accommodation unit, a moving object that moves in a first direction toward the discharge port and in a second direction away from the discharge port in the accommodation unit, and a control unit that controls driving of the moving object. The control unit performs discharging processing and moving processing. In the discharging processing, the discharge port is opened by moving the moving object from a closed position at which the discharge port is closed, in the second direction, and then the fluid is extruded and discharged from the discharge port by moving the moving object in the first direction. In the moving processing, the moving object is moved in the second direction during a period when the fluid is discharged from the discharge port in the discharging processing.

Abstract: A liquid discharge apparatus includes a liquid chamber communicating with a nozzle that discharges liquid; a capacity changer that changes a capacity of the chamber; an inflow path connected to the chamber allowing the liquid to enter the chamber; an outflow path connected to the liquid chamber allowing the liquid to exit the chamber; a first resistance changer changing a flow resistance of the inflow path; a second resistance changer changing a flow resistance of the outflow path; and a controller controlling the capacity changer, the first resistance changer, and the second resistance changer. The controller allows the nozzle to discharge the liquid by increasing the flow resistance of the inflow and outflow paths, increasing the capacity of the chamber, and then, while the flow resistance of the inflow and outflow paths remain increased, decreasing the capacity of the chamber.

Abstract: There is provided a liquid discharge apparatus including: a liquid-chamber that communicates with a nozzle and a flow-chapel; a liquid chamber driving unit that changes a volume of the liquid-chamber; and a valve that changes a volume of the flow-channel. At least one of first control of increasing the volume of the liquid-chamber, such that a change amount of the volume of the liquid-chamber is equal to or larger than a volume of the liquid flowing from the flow-channel into the liquid-chamber due to the decrease in volume of the flow-channel by the valve, and second control of decreasing the volume of the liquid-chamber, such that a change amount of the volume of the liquid-chamber is equal to or larger than a volume of the liquid flowing from the liquid-chamber out to the flow-channel due to the increase in volume of the flow-channel by the valve, is executed.

Abstract: A fluid discharging apparatus includes a storage chamber storing a fluid, a discharge port communicating with the storage chamber, a supply unit supplying the fluid to the storage chamber by pressure, a moving object moving in a first direction toward the discharge port and in a second direction away from the discharge port, a pressure changing mechanism, and a control unit controlling the moving object and the pressure changing mechanism. The control unit performs discharge processing, moving processing, and pressure control processing. In the discharge processing, the moving object moves from a closed position closing the discharge port in the first direction to discharge the fluid. In the moving processing, the moving object moves in the second direction while the fluid is discharged from the discharge port. In the pressure control processing, the pressure changing mechanism suppresses a pressure increase in storage chamber.

Abstract: A liquid ejecting apparatus includes: a nozzle; a pressure chamber; a flow channel which is connected to the pressure chamber; a flow channel wall portion that changes a flow channel resistance of the flow channel; and an actuator that displaces the flow channel wall portion. An displacement amplifying mechanism is provided between the actuator and the flow channel wall portion. The displacement amplifying mechanism includes an elastic material that is elastically deformed by displacement of the actuator, and an accommodation chamber that is partitioned from the flow channel by the flow channel wall portion and accommodates the elastic material. A first portion of the elastic material receiving a pressure from the actuator, a second portion of the flow channel wall portion being bent and deformed between the flow channel and the accommodation chamber by receiving a pressure from the elastic material, an area of the second portion being less than an area of the first portion.

Abstract: A liquid ejecting apparatus includes a plurality of nozzles, a plurality of pressure chambers, a plurality of pressure-generation-elements, a plurality of inflow channels, a first-channel-resistance-changing-section, and a control-unit. The control-unit repeats control of switching between a first state in which the control-unit controls the first-channel-resistance-changing-section to collectively increase channel resistance of the inflow channels and a second state in which the control-unit controls the first-channel-resistance-changing-section to collectively decrease the channel resistance of the inflow channels.

Abstract: A liquid ejecting apparatus includes: a pressure chamber configured to communicate with a nozzle hole through which a liquid is discharged; a liquid chamber having a first opening configured to communicate with the pressure chamber; a first slide section arranged in the liquid chamber and having a first through-hole at a position corresponding to the first opening; and a driving device configured to drive the first slide section along a predetermined direction. The first slide section slides, by being driven by the driving device, along the predetermined direction on an inner wall surface having the first opening of the liquid chamber, and changes, by changing an area where the first opening and the first through-hole overlap with each other, an opening degree of the first opening, and the first slide section makes linear contact with the inner wall surface having the first opening along the predetermined direction.

Abstract: An displacement amplifying mechanism that enlarges an amount of displacement of an actuator includes an accommodation chamber in which a liquid is sealed, a first wall portion that forms a wall surface of the accommodation chamber and applies a pressure to the liquid in accordance with displacement of the actuator, and a second wall portion that forms the wall surface of the accommodation chamber and is displaced in a first direction which is a direction away from the accommodation chamber in a state where an elastic force acting in a second direction approaching the accommodation chamber is generated by a pressure of the liquid when the first wall portion applies the pressure to the liquid, in which an area of the second wall portion in contact with the liquid is smaller than an area of the first wall portion in contact with the liquid.

Abstract: The liquid discharge device includes a plurality of volume changing portions and at least one blocking portion. The plurality of volume changing portions are in combination with a plurality of pressure chambers which communicate with nozzles for discharging a liquid and which have inlets through which the liquid flows into the plurality of pressure chambers. The at least one blocking portion blocks communication at the inlets. The plurality of volume changing portions are arranged in a plurality of rows spaced from one another. In a direction along the plurality of rows, the plurality of rows of volume changing portions are staggered from one another. The liquid is discharged from the nozzles by using the plurality of volume changing portions in a state in which the inlets are blocked by the at least one blocking portion.

Abstract: A liquid ejecting apparatus includes a liquid chamber that is in communication with a nozzle that ejects liquid, a volume changing device that changes volume of the liquid chamber, an inflow channel that is connected to the liquid chamber and enables the liquid to flow into the liquid chamber, a discharge channel that discharges the liquid, a first flow path resistance changing device that changes flow path resistance of the inflow channel, a liquid supply section that supplies the liquid to the inflow channel by pressurizing the liquid, and a bypass channel that enables the liquid supplied from the liquid supply section to bypass the inflow channel and to flow into the discharge channel.

Abstract: A liquid ejecting apparatus is provided with a liquid chamber which communicates with a nozzle for ejecting liquid; an inflow path which is connected to the liquid chamber; a liquid supply unit which supplies the liquid to the inflow path; an outflow path which is connected to the liquid chamber, and through which the liquid is caused to flow out from the liquid chamber; a moving object which causes the liquid to be ejected from the nozzle by reciprocating toward the nozzle in the liquid chamber; and an actuator which causes the moving object to reciprocate. In an ejecting state in which liquid is continuously ejected from the nozzle due to at least reciprocating of the moving object, a flow path resistance of the outflow path is larger than that of the inflow path.

Abstract: A liquid ejecting apparatus includes a liquid chamber that communicates with a nozzle, a communication flow path that communicates with the liquid chamber and that has a first opening into which a liquid flows, a discharge flow path that discharges the liquid and that has a second opening into which the liquid flows, a supply flow path capable of supplying the liquid to the communication flow path and the discharge flow path, and a first slide portion disposed between the supply flow path and the communication flow path and having a first through hole that enables the supply flow path to communicate with the communication flow path. The first slide portion, by sliding along the opening surface of the first opening, changes the position of the first through hole with respect to the communication flow path and changes the flow path resistance of the communication flow path.

Abstract: A liquid discharging apparatus includes: a liquid compartment; a flowing-in passage that is in communication with the liquid compartment through a flowing-in opening, the liquid flowing through the flowing-in passage into the liquid compartment; a nozzle that is in communication with the liquid compartment through a communication opening; a capacity changer that causes the liquid contained in the liquid compartment to be discharged from the nozzle by causing a displacement of an inner wall surface of the liquid component and changing capacity of the liquid compartment; and a flowing-in passage resistance changer that changes capacity of the flowing-in passage to change flow resistance of the flowing-in passage. In the liquid compartment, as viewed from the flowing-in opening, the communication opening is located in front of a center-of-displacement portion, an amount of the displacement of which is largest in the inner wall surface displaced by the capacity changer.

Abstract: A fluid ejection device is a fluid ejection device adapted to eject a fluent material including an actuator, and a drive signal supply section adapted to output a signal used to drive the actuator, wherein the actuator includes a first piezoelectric element and a second piezoelectric element connected in series to each other. The drive signal supply section is capable of outputting a first drive waveform and a second drive waveform having a voltage change part steeper than that of the first drive waveform to the first piezoelectric element and the second piezoelectric element, outputs the second drive waveform to the second piezoelectric element in a case of outputting the first drive waveform to the first piezoelectric element, and outputs the first drive waveform to the second piezoelectric element in a case of outputting the second drive waveform to the first piezoelectric element.

Abstract: A liquid discharge apparatus includes a liquid chamber communicating with a nozzle that discharges liquid; a capacity changer that changes a capacity of the chamber; an inflow path connected to the chamber allowing the liquid to enter the chamber; an outflow path connected to the liquid chamber allowing the liquid to exit the chamber; a first resistance changer changing a flow resistance of the inflow path; a second resistance changer changing a flow resistance of the outflow path; and a controller controlling the capacity changer, the first resistance changer, and the second resistance changer. The controller allows the nozzle to discharge the liquid by increasing the flow resistance of the inflow and outflow paths, increasing the capacity of the chamber, and then, while the flow resistance of the inflow and outflow paths remain increased, decreasing the capacity of the chamber.

Abstract: A liquid ejecting apparatus including; a first liquid chamber that communicates with a first nozzle, a first channel, and a first outflow channel; a second liquid chamber that communicates with a second nozzle, a second channel, and a second outflow channel; a first volume changing portion that changes a volume of the first liquid chamber to eject liquid from the first nozzle; a second volume changing portion that changes a volume of the second liquid chamber to eject the liquid from the second nozzle; a first inflow channel resistance changing portion that changes a flow channel resistance of the first inflow channel, a second inflow channel resistance changing portion that changes a flow channel resistance of the second inflow channel, and an inflow channel-side common drive portion that applies drive forces to the first inflow channel resistance changing portion and the second inflow channel resistance changing portion.

Abstract: There is provided a liquid discharge apparatus including: a liquid-chamber that communicates with a nozzle and a flow-chapel; a liquid chamber driving unit that changes a volume of the liquid-chamber; and a valve that changes a volume of the flow-channel. At least one of first control of increasing the volume of the liquid-chamber, such that a change amount of the volume of the liquid-chamber is equal to or larger than a volume of the liquid flowing from the flow-channel into the liquid-chamber due to the decrease in volume of the flow-channel by the valve, and second control of decreasing the volume of the liquid-chamber, such that a change amount of the volume of the liquid-chamber is equal to or larger than a volume of the liquid flowing from the liquid-chamber out to the flow-channel due to the increase in volume of the flow-channel by the valve, is executed.

Abstract: A liquid ejecting apparatus includes a liquid chamber in communication with a nozzle, a volume changing unit configured to change a volume of the liquid chamber, an inflow passage through which the liquid flows into the liquid chamber, an outflow passage through which the liquid flows out of the liquid chamber, a passage resistance changing unit configured to change a passage resistance of the outflow passage, and a controller configured to control the volume changing unit to reduce the volume of the liquid chamber so as to cause the liquid to be ejected through the nozzle. In filling the liquid chamber with the liquid for ejection of the liquid through the nozzle, the controller controls the passage resistance changing unit to change the passage resistance of the outflow passage to an increased passage resistance and controls the volume changing unit to increase the volume of the liquid chamber.

Abstract: A fluid discharge apparatus includes a storage chamber, a moving body, a drive mechanism, and a coupling member. The storage chamber includes a discharge port to discharge the fluid. The moving body includes a leading end portion facing the discharge port inside the storage chamber. The drive mechanism is positioned on the opposite side of the moving body to the discharge port, and performs an operation to reciprocate the moving body. The coupling member couples the moving body to the drive mechanism such that the moving body is attachable and detachable. The coupling member includes a biasing section to apply an elastic force in a direction to move the moving body toward the drive mechanism, and, while pressing the moving body against the coupling member, to support the moving body in a state in which the moving body is capable of elastic displacement in a direction toward the discharge port.

Abstract: A liquid ejecting apparatus is provided with a liquid chamber which communicates with a nozzle for ejecting liquid; an inflow path which is connected to the liquid chamber; a liquid supply unit which supplies the liquid to the inflow path; an outflow path which is connected to the liquid chamber, and through which the liquid is caused to flow out from the liquid chamber; a moving object which causes the liquid to be ejected from the nozzle by reciprocating toward the nozzle in the liquid chamber; and an actuator which causes the moving object to reciprocate. In an ejecting state in which liquid is continuously ejected from the nozzle due to at least reciprocating of the moving object, a flow path resistance of the outflow path is larger than that of the inflow path.