Abstract: A droplet dispensing apparatus includes a crystal sensor, a resonance frequency measuring unit, and a controller. The controller is configured to obtain the resonance frequency of the crystal sensor before droplets are discharged from a liquid dropping device, control the liquid dropping device to discharge droplets on to the crystal sensor, and obtain the resonance frequency of the crystal sensor after droplets are discharged from the liquid dropping device. The controller estimates a volatilization amount for the droplets on the crystal sensor based on a temporal change trend in the resonance frequency of the crystal sensor and calculates the total weight of the droplets discharged from the liquid dropping device based on the difference in resonance frequency of the crystal sensor before and after the droplets are discharged and the estimated volatilization amount.

Abstract: A liquid discharge apparatus includes a nozzle plate with nozzles and actuators and a drive controller. First and second nozzles are directly adjacent to each other in a first direction. First and third nozzles are directly adjacent to each other in a second direction. The drive controller is configured to apply a drive signal to first, second, and third actuators corresponding to the first, second, and third nozzles, respectively, during a drive cycle. A difference between a first timing at which the drive signal is applied to the first actuator and a second timing at which the drive signal is applied to the second actuator and a difference between the first timing and a third timing at which the drive signal is applied to the third actuator is an odd number multiple of a half of an inherent vibration cycle of the liquid discharge apparatus.

Abstract: A liquid ejecting head includes a driving substrate including a driving element configured to, in response to a signal from an external controller, expand or contract so that a liquid is discharged from a pressure chamber through a nozzle, and a connection portion connecting the driving element to a wiring substrate connectable to the external controller; a sealing member that covers the connection portion and a part of the wiring substrate; and a mask plate partially covering a part of the driving substrate including the connection portion and contacting the sealing member.

Abstract: A liquid discharge apparatus includes a nozzle plate with nozzles and actuators and a drive controller. First and second nozzles are directly adjacent to each other in a first direction. First and third nozzles are directly adjacent to each other in a second direction. The drive controller is configured to apply a drive signal to first, second, and third actuators corresponding to the first, second, and third nozzles, respectively, during a drive cycle. A difference between a first timing at which the drive signal is applied to the first actuator and a second timing at which the drive signal is applied to the second actuator and a difference between the first timing and a third timing at which the drive signal is applied to the third actuator is an odd number multiple of a half of an inherent vibration cycle of the liquid discharge apparatus.

Abstract: According to one embodiment, a liquid dispensing apparatus includes a mounting unit configured to hold a liquid discharging apparatus that discharges liquid from nozzles simultaneously by an operation of an actuator. An inspection media placement region is provided on which an inspection medium can be placed to receive the liquid discharged from the liquid discharging apparatus. A controller is configured to control the actuator to vary a volume of the liquid discharged from each nozzle for a nozzle inspection operation. The volume is varied according to a predetermined distance between adjacent nozzles that simultaneously discharge liquid and a predetermined contact angle for a droplet of the liquid when on the inspection medium.

Abstract: According to one or more embodiments, a liquid discharge head comprises a substrate, a nozzle plate, and a damper member. The substrate comprises a plurality of pressure chambers. The nozzle plate is provided on a first surface of the substrate and comprises a plurality of nozzles, each of the plurality of nozzles aligned with a corresponding one of the plurality of pressure chambers. The damper member is provided on a second surface of the substrate and comprises a pressure wave absorbing material.

Abstract: According to one embodiment, an actuator of a liquid ejection head is supplied with a drive signal including a first waveform and at least one second waveform. First waveform includes a first change from a first voltage to a second voltage, and a second change from the second voltage to a third voltage less than the first voltage. A second waveform begins after a time equal to one half of the natural oscillation period of liquid in a pressure chamber of the liquid ejection head. The second waveform includes a change from the third voltage to the second voltage and a change from second voltage to the third voltage after a time less than one half of the natural oscillation period.

Abstract: According to one embodiment, a liquid discharge apparatus includes a nozzle plate configured such that a plurality of nozzles are arranged, a liquid supply unit, an actuator, a driving circuit, and a low impedance circuit. The nozzles arranged in the nozzle plate discharge a liquid. The liquid supply unit communicates with the nozzles. The actuator is provided for each nozzle in the nozzle plate. The actuator includes a piezoelectric element. The driving circuit supplies a driving signal to the piezoelectric element of the actuator and drives the actuator to discharge a liquid from the nozzles. The low impedance circuit is connected to the piezoelectric element of the actuator while stress is applied to the nozzle plate due to external factors.

Abstract: According to one embodiment, a liquid discharging device includes a storage unit storing a use history indicating whether the liquid discharging device has been previously used, and a discharging device mounted on a liquid dispensing apparatus and configured to discharge a liquid when supplied a discharge voltage in response to a discharge signal received from the liquid dispensing apparatus.

Abstract: A liquid ejecting head includes a driving substrate including a driving element configured to, in response to a signal from an external controller, expand or contract so that a liquid is discharged from a pressure chamber through a nozzle, and a connection portion connecting the driving element to a wiring substrate connectable to the external controller; a sealing member that covers the connection portion and a part of the wiring substrate; and a mask plate partially covering a part of the driving substrate including the connection portion and contacting the sealing member.

Abstract: According to one embodiment, a liquid discharging device includes a storage unit storing a use history indicating whether the liquid discharging device has been previously used, and a discharging device mounted on a liquid dispensing apparatus and configured to discharge a liquid when supplied a discharge voltage in response to a discharge signal received from the liquid dispensing apparatus.

Abstract: According to one embodiment, a liquid discharge head includes a plate and a flow path base. The plate includes a pressure chamber which is opened to one main surface, a liquid introduction portion which converts a flow direction of a liquid to a flow toward the pressure chamber on a secondary side of the flow direction of the liquid at an opening of the pressure chamber, and a nozzle which is connected to the pressure chamber, is opened to the other main surface, and discharges the liquid. The flow path base is provided on one main surface side of the plate and forms a liquid chamber in which the liquid flows with the plate along a surface direction of the one main surface.

Abstract: According to one embodiment, a liquid discharge apparatus includes a nozzle plate configured such that a plurality of nozzles are arranged, a liquid supply unit, an actuator, a driving circuit, and a low impedance circuit. The nozzles arranged in the nozzle plate discharge a liquid. The liquid supply unit communicates with the nozzles. The actuator is provided for each nozzle in the nozzle plate. The actuator includes a piezoelectric element. The driving circuit supplies a driving signal to the piezoelectric element of the actuator and drives the actuator to discharge a liquid from the nozzles. The low impedance circuit is connected to the piezoelectric element of the actuator while stress is applied to the nozzle plate due to external factors.

Abstract: A liquid discharge apparatus includes a nozzle plate with nozzles and actuators and a drive controller. First and second nozzles are directly adjacent to each other in a first direction. First and third nozzles are directly adjacent to each other in a second direction. The drive controller is configured to apply a drive signal to first, second, and third actuators corresponding to the first, second, and third nozzles, respectively, during a drive cycle. A difference between a first timing at which the drive signal is applied to the first actuator and a second timing at which the drive signal is applied to the second actuator and a difference between the first timing and a third timing at which the drive signal is applied to the third actuator is an odd number multiple of a half of an inherent vibration cycle of the liquid discharge apparatus.

Abstract: A chemical solution discharge device includes substrates, holding containers, a plurality of first actuators, a plurality of second actuators, a first conductive wire, and a second conductive wire. The substrate is formed with a plurality of first pressure chambers and a plurality of second pressure chambers respectively adjacent to the plurality of first pressure chambers, and includes chemical solution supply ports for supplying the chemical solution to the plurality of first pressure chambers and second pressure chambers. The plurality of first actuators change the pressure of the chemical solution in the plurality of first pressure chambers. The plurality of second actuators change the pressure of the chemical solution in the plurality of second pressure chambers. The first conductive wire supplies a first driving signal to the plurality of first actuators. The second conductive wire supplies a second driving signal to the plurality of second actuators.

Abstract: A liquid ejecting head includes an actuator communicating with a nozzle, configured to eject liquid from the nozzle, a drive circuit on a circuit board configured to drive the actuator, a flow path of liquid circulating, a first temperature sensor configured to measure a temperature on a surface on the circuit board proximate to the drive circuit, and a second temperature sensor configured to measure a temperature of a liquid on the flow path of liquid circulating.

Abstract: According to one embodiment in an inkjet head, the common electrodes for all the actuators, without overlapping with the first wiring pattern formed by individual electrodes, are connected to a second wiring pattern that passes between the outer peripheral portion of piezoelectric bodies, and a third wiring pattern that extends in a direction different from a direction of the second wiring pattern. The first wiring pattern and the third wiring pattern are electrically insulated at intersections thereof.

Abstract: A droplet ejecting apparatus includes a solution container, first and second nozzle groups fluidly connected to the solution container and having nozzles from which the solution can be ejected, first actuators respectively associated with each nozzle in the first nozzle group, second actuators respectively associated with each nozzle in the second nozzle group, and drive circuits respectively connected in a parallel to the first and second actuators. Each nozzle has a pressure chamber associated therewith. Each actuator causes a pressure change in a corresponding pressure chamber to control an ejection of a droplet of the solution from the corresponding nozzle. Each drive circuit is configured to supply a drive signal. When supplied by each drive circuit to the first and second actuators respectively, each drive signal causes solution to be ejected from each nozzle of each respective nozzle group at a same time.

Abstract: A method for driving a liquid injection apparatus comprising a base plate on which a pressure chamber communicating with a nozzle, a piezoelectric body arranged corresponding to the pressure chamber, and a volume variable plate arranged between the pressure chamber and the piezoelectric body and changing a volume of the pressure chamber by applying a voltage to the piezoelectric body, applying a first voltage in a rest state before the liquid is ejected from the nozzle; applying a second voltage higher than the first voltage in a standby state to contract the pressure chamber before the liquid is ejected from the nozzle; applying a third voltage lower than the second voltage to eject the liquid from the nozzle; and switching the first voltage, the second voltage and the third voltage and applying them to the piezoelectric body according to ejection data indicating whether to eject the liquid.

Abstract: An embodiment comprises a drug solution ejecting device having a pressure chamber including a discharge port on a first side, a supply port on a second side, and an inner wall of the pressure chamber between the first and second sides. An actuator is configured to change pressure to eject a solution from a nozzle via the discharge port. The inner wall of the pressure chamber includes at least a part that is silicon or silicon oxide. As detected by X-rat photoelectron spectroscopy, a surface of the part has a ratio of a total area of peaks of silicon in monovalent, divalent, and trivalent binding states to an area of a peak of silicon in a tetravalent binding state that is greater than a same such ratio of a surface of a silicon wafer having only an untreated natural oxide film formed thereon.