Abstract: An element substrate including a liquid discharge element, comprising a memory element capable of storing individual information of the element substrate by a write, the memory element being configured to change an impedance value by the write, a plurality of current supply elements capable of supplying a current to the memory element, and a determination unit configured to determine presence/absence of the write based on a voltage generated in the memory element by the current selectively supplied from the plurality of current supply elements, wherein the plurality of current supply elements constitute a part of a current mirror circuit and each supply the current in an amount according to a size ratio to the memory element.

Abstract: A liquid absorber of the present disclosure includes: a first base material; a second base material; and an absorption layer provided between the first base material and the second base material, in which the first base material and the second base material both contain a flame-retardant filament nonwoven fabric, and a content of a flame retardant in the absorption layer is less than 10% by mass.

Abstract: A liquid discharge apparatus includes liquid discharge units, a first image capturing unit, a second image capturing unit, a detection unit, and a discharge determination unit. The liquid discharge units include a first liquid discharge unit and a second liquid discharge unit downstream from the first discharge unit in a moving direction of a recording medium. The first capturing unit captures a first image of the medium at a position corresponding to the first discharge unit. The second capturing unit captures a second image of the medium at a position corresponding to the second discharge unit. The detection unit detects a movement amount of the medium in the moving direction, based on the first image and the second image. The discharge determination unit determines a discharge timing of the second discharge unit with respect to discharge of the first discharge unit, based on the movement amount and a clock signal.

Abstract: A driving waveform determining method with which a waveform of a driving pulse applied to a driving element provided in a liquid ejecting head that ejects a liquid is determined includes: a first step of determining a waveform candidate of the driving pulse; a second step of notifying a user of candidate information of the waveform candidate; a third step of receiving an instruction issued by the user in accordance with the candidate information; and a fourth step of determining the waveform of the driving pulse in accordance with the instruction.

Abstract: A processing device includes a first light source and a second light source configured to emit light having a peak wavelength from 900 nm to 2,100 nm, a first light receiving portion, a second light receiving portion, and a processing portion configured to subject a medium to processing of increasing or reducing an amount of moisture contained in the medium. the first light source and the first light receiving portion are positioned upstream of the processing portion in a transport direction of the medium, the first light source irradiates, with light, the medium, the first light receiving portion receives light reflected by the medium, the second light source and the second light receiving portion are positioned downstream of the processing portion in the transport direction, the second light source irradiates, with light, the medium, and the second light receiving portion receives light reflected by the medium.

Abstract: According to one or more embodiments, a liquid ejection head includes an actuator and a driver. The actuator has a piezoelectric element made of a lead-free piezoelectric material. The driver applies a voltage to the actuator to vibrate the piezoelectric element in a first direction with a first electric field in a first polarization direction of the piezoelectric element and a second electric field in a direction opposite to the first polarization direction. The second electric field is controlled to be equal to or less than a coercive electric field of the piezoelectric element.

Abstract: A droplet jetting device comprising a membrane layer defining a pressure chamber that is in fluid communication with a nozzle, the membrane layer carrying, on a membrane that covers the pressure chamber, an actuator for generating pressure waves in a liquid in the pressure chamber, the device further comprising a distribution layer bonded to the membrane layer on the side of the membrane and defining a supply line for supplying the liquid to the pressure chamber, the supply line being connected to the pressure chamber via a restrictor passage extending through the distribution layer in the thickness direction of that layer, and via a window formed in the membrane, characterized in that the restrictor passage has a uniform cross-section, and the membrane window is delimited by a contour that is inwardly offset from the contour of the restrictor passage on the entire periphery of the restrictor passage.

Abstract: A liquid ejection head includes a base plate and at least two device chips in which ejection ports for ejecting a liquid are formed and which are disposed on the base plate. At least one first reference mark is provided on the base plate. A second reference mark is provided on each of the device chips. At least one space is formed between adjacent device chips. The second reference marks and the first reference mark present in the space are disposed on an array axis along which the device chips are arrayed.

Abstract: In some examples, an apparatus can include a syringe body including an electrical interface at a side surface of the syringe body, an interface at an end of the syringe body including an output at a distal surface of the syringe body, a print material particles reservoir located in the syringe body, and a structure to adapt a volume of the print material particles reservoir to move print material particles out of the print material particles reservoir through the output, where in response to the volume adapting structure moving from a first position to a second position, a signal is transmitted by the electrical interface.

Abstract: A print head includes a generation portion that amplifies an input signal to generate a drive signal, an ejection portion that includes a first driving element driven by a drive signal, and ejects a liquid in response to the drive of the first driving element, a supply portion that includes a first switch for switching between supply and non-supply of the drive signal to the first driving element, and a sound emitting portion that includes a second driving element driven by the drive signal, and a second switch for switching between supply and non-supply of the drive signal to the second driving element, and emits sound in response to the drive of the second driving element, in which the first switch and the second switch are turned on exclusively.

Abstract: There is provided a print apparatus including: a piezoelectric member; an individual electrode formed in the piezoelectric member; a first common electrode formed in the piezoelectric member so that the first common electrode is opposed to the individual electrode; a second common electrode formed in the piezoelectric member so that the second common electrode is opposed to the individual electrode, a voltage to be applied to the second common electrode being different from a voltage to be applied to the first common electrode; and a detection circuit configured to detect a capacitance of a first capacitor configured by the piezoelectric member, the individual electrode, and the first common electrode and a second capacitor configured by the piezoelectric member, the individual electrode, and the second common electrode. The detection circuit includes an oscillation circuit configured to be connected to the individual electrode.

Abstract: A printing apparatus includes a head including a plurality of nozzles configured to discharge liquid to a medium, an abnormal nozzle detection unit configured to detect an abnormal nozzle having a discharging defect among the plurality of nozzles, a contact detection unit configured to detect contact between the head and the medium, a suction unit configured to perform an ejection operation of ejecting the liquid from the plurality of nozzles, and a control unit. The control unit executes a suction operation when the abnormal nozzle is detected and the contact between the head and the medium is detected, and the control unit executes a printing of complementing the abnormal nozzle when the abnormal nozzle is detected and the contact between the head and the medium is not detected.

Abstract: A liquid ejection unit includes: a liquid holding section which has an ejection port through which a liquid is ejected and which holds the liquid; a pressure adjustment section which is configured to adjust a pressure of a liquid held in the liquid holding section; and a displacement member which is configured to displace at least a part of the liquid whose pressure is adjusted and eject the liquid from the liquid holding section.

Abstract: Methods of ejecting droplets containing a non-Newtonian fluid by an acoustic droplet ejector can include applying a tone burst of focused acoustic energy to a fluid reservoir containing a non-Newtonian fluid at sufficient amplitude to effect droplet ejection according to a tone burst pattern. The tone burst pattern may include three discrete tone burst segments, the first tone burst segment having greater duration than the second and third segments, and third segment having greater duration than the second segment. The exact durations and amplitudes of the tone burst segments can be tuned to influence the ejection properties.

Abstract: A method of driving an inkjet head having a nozzle and a pressure generator, a plurality of droplets of the ink discharged in response to a series of the drive signals being caused to hit a recording medium to form a single pixel. The method includes, applying, to the pressure generator, the series of the drive signals including a first one of the drive signals that has a first voltage amplitude and a second one of the drive signals that has a second voltage amplitude larger than the first voltage amplitude. A last drive signal in the series of the drive signals is the second one of the drive signals. The first voltage amplitude and the second voltage amplitude are determined such that a ratio of (first voltage amplitude)/(second voltage amplitude) has a value corresponding to a specific gravity of the ink to be discharged.

Abstract: Example implementations relate to a method to manage printhead operational life; the method comprising firing at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid, measuring a parameter associated with the drop of print liquid, and adjusting the firing parameter in response to the measuring to reduce the measured parameter associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.

Abstract: An inkjet printer includes a support table supporting a waste liquid tank and being displaceable in accordance with a weight of the waste liquid tank, a first sensor to detect that the support table has reached a first position, a second sensor to detect that the support table has reached a second position, a first determinator to determine that the waste liquid tank is in a near-end state when the support table is detected by the first sensor to have reached the first position, and a notifier to notify a user of the near-end state when the first determinator determines that the waste liquid tank is in the near-end state.

Abstract: The disclosed subject matter includes a system for marking tablet-shaped articles. The system includes a hopper and a conveyor. The conveyor has opposing first and second side portions, and at least one pocket is defined in the conveyor between the opposing first and second side portions. The conveyor is configured to receive from the hopper a tablet-shaped article in the at least one pocket. A first window is defined in the first side portion of the conveyor. The first window defining an opening between the pocket and an external environment. The system further includes a first printing head adjacent the first side portion of the conveyor. The first printing head is configured to mark the tablet-shaped article through the first window.

Abstract: An apparatus for dispensing droplet may include a droplet discharging member, a stage and a control member. The droplet discharging member may include a plurality of nozzles arranged in a first direction by a constant interval. The stage may receive a substrate including a plurality of regions for forming a plurality of pixels of a same size disposed in the first direction and a second direction substantially perpendicular to the first direction. The control member may control the droplet discharging member such that amounts of droplets may be substantially identical in the regions of the substrate for the pixels if the numbers of the nozzles of the droplet discharging member with respect to sides of the regions of the substrate for the pixels are different in the first direction.

Abstract: A method for reducing instability of a nozzle meniscus of a droplet deposition apparatus. The method includes the steps of receiving first and second data blocks for respective first and second line pixels, receiving a data set of forbidden pixel periods, determining a first jitter delay value based on the forbidden pixel periods, generating first and second print data based on the first and second data blocks, the first print data defining a first holding period and one or more drive pulses and the second print data defining one or more drive pulses; wherein the first and second print data generate first and second actuating element signals that cause an actuating element to eject at least one droplet from a nozzle, wherein the first jitter delay value adjusts a first pixel period, defined by the drive pulses, to fall outside of the forbidden pixel periods to reduce nozzle meniscus instability.