A liquid droplet ejecting apparatus, includes: an ejecting head having an ejecting surface, the ejecting head being configured to eject liquid droplets onto a print target based on image data, the print target including a parallel surface and an inclined surface; a distance detector which detects a distance between the ejecting surface and the parallel surface and a distance between the ejecting surface and the inclined surface; and a controller. If the controller determines that the liquid droplets are to be ejected onto the inclined surface based on a detection result of the distance detector, the controller obtains information about a print mode selected by a user from a plurality of print modes related to ejection control of the liquid droplets for the inclined surface; and executes an ejection control of the liquid droplets to the inclined surface based on the print mode selected by the user.

A liquid discharging apparatus has a switch control circuit that controls whether to cause each of a first switch circuit, a second switch circuit, a third switch circuit, and a fourth switch circuit to output a driving signal. The switch control circuit has a fifth switch circuit, a sixth switch circuit, and a seventh switch circuit. The fifth switch circuit switches between output of the first data to the second switch circuit and output of the second data to the second switch circuit. The sixth switch circuit switches between output of the first data to the third switch circuit and output of the third data to the third switch circuit. The seventh switch circuit switches between output of the first data to the fourth switch circuit and output of the fourth data to the fourth switch circuit.

A drop ejector array device includes a first plurality and a second plurality of drop ejectors that are alternatingly disposed along an array direction on the substrate surface. A voltage input terminal and a current return terminal are disposed on the substrate surface. A first power bus line connects the first plurality to the voltage input terminal. A second power bus line connects the second plurality to the voltage input terminal. The second power bus line is electrically connected to the first power bus line by a primary power bus connector line. A first current return bus line connects the first plurality to the current return terminal. A second current return bus line connects the second plurality to the current return terminal. The second current return bus line is electrically connected to the first current return bus line by a primary current return bus connector line.

An actuator drive circuit of a liquid discharge apparatus includes a discharge waveform generating circuit, a sleep waveform generating circuit, and a wake waveform generating circuit. The discharge waveform generating circuit is configured to generate a plurality of drive waveforms to be applied to actuators of the liquid discharge apparatus for liquid discharge. The drive waveforms correspond to gradation values of gradation scale data. The sleep waveform generating circuit is configured to generate a sleep waveform to be applied to the actuators. The sleep waveform causes a voltage of the actuators to transition to a first voltage without liquid discharge. The wake waveform generating circuit is configured to generate a wake waveform to be applied to the actuators. The wake waveform causes the voltage of the actuators to transition to a second voltage higher than the first voltage without liquid discharge.

A first switching circuit, a second switching circuit, a first bootstrap circuit that is coupled to the first switching circuit and the second switching circuit, and a smoothing circuit and outputs a drive signal are provided, in which the second switching circuit includes a second gate driver that outputs a third gate signal and a fourth gate signal, a third transistor of which the first voltage is supplied, and which is driven based on the third gate signal, a fourth transistor which is driven based on the fourth gate signal, and a second bootstrap circuit that includes a second capacitive element supplying a third voltage to the second gate driver and coupled to a second output point and the second gate driver, and a second diode of which the first voltage is supplied and which is coupled to the second capacitive element.

A pressure variation suppressor includes: a liquid flow chamber through which liquid flows, the liquid flow chamber having an inlet through which the liquid flows in and an outlet through which the liquid flows out; and a flexible film that partitions the liquid flow chamber into a storage chamber in which the liquid is stored and a non-storage chamber in which the liquid is not stored, wherein the flexible film is slack in a state where the liquid flows through the liquid flow chamber.

A controller of a liquid ejection device is configured to receive a preparation signal instructing preparation to eject the liquid, the preparation signal being externally issued upon issuance of an ejection instruction to eject the liquid toward a target medium. The controller is configured to start receiving ejection data after the preparation signal is received, the ejection data being externally transmitted on condition that the ejection instruction is issued and after the preparation signal is issued. The controller is configured to control the liquid ejection head to eject the liquid toward the target medium through the multiple nozzles based on the ejection data. After receiving the preparation signal and before receipt of the ejection data is completed, the controller is configured to control the liquid ejection head to eject liquid through the multiple nozzles and examine at least a part of the nozzles for ejection-defectiveness based on the determination signal.

A method includes applying a mold chase to a fluid ejection die to at least partially define at least one cavity. The mold chase includes a feature to contact a fluid ejection portion of the fluid ejection die, and at least one structure separate from the feature to contact a first end portion adjacent a first end of the fluid ejection die. The method includes filling the at least one cavity with a mold compound to produce a molded carrier for the fluid ejection die.

A liquid ejection head 2 in the present disclosure is provided with a first channel member 4 including a first surface 4-1, a plurality of ejection ports in the first surface, a plurality of pressurizing chambers which are individually communicated with the plurality of ejection ports, and a second surface 4-2 on the opposite side to the first surface 4-1; with a pressurizing member on the second surface 4-2; and with a second channel member 6 including a third surface 6-3, a fourth surface 6-4 on the opposite side to the third surface 6-3, a raised part 6e which protrudes from the fourth surface, and a first through hole 6a in the raised part 6e. The second channel member 6 is provided on a region in the second surface 4-2 of the first channel member 4, in which the pressurizing member is not arranged. When viewed on a plane, an outer circumference 7a of the raised part is located on inner side from an outer circumference 7b of the fourth surface 6-4.

Described herein are bioprinters comprising: one or more printer heads, wherein a printer head comprises a means for receiving and holding at least one cartridge, and wherein said cartridge comprises contents selected from one or more of: bio-ink and support material; a means for calibrating the position of at least one cartridge; and a means for dispensing the contents of at least one cartridge. Further described herein are methods for fabricating a tissue construct, comprising: a computer module receiving input of a visual representation of a desired tissue construct; a computer module generating a series of commands, wherein the commands are based on the visual representation and are readable by a bioprinter; a computer module providing the series of commands to a bioprinter; and the bioprinter depositing bio-ink and support material according to the commands to form a construct with a defined geometry.