A system and method for ejecting one or more fluids from a digital dispense device. The method includes selecting a) fixed target areas and total fluid volumes for the target areas of the substrate; b) a predetermined droplet volume for the target areas; c) calculating a required number of droplets for the target areas; d) determining a maximum number of droplets per pixel based on the target areas; e) calculating a number of droplets per pass of an ejection head over the target areas; f) modifying one or more dimension of the target areas to create modified target areas; g) selecting and centering the modified spot size target areas in the target areas; and h) depositing fluids in the modified target areas while scanning the ejection head over the modified target areas.

An ink-jet recording apparatus includes a recording head including a plurality of pressurizing chambers for storing ink and a plurality of pressurizing elements for pressing ink in the pressurizing chambers to eject ink from nozzles; a head driver including a driving pulse generator that applies a drive voltage to the pressurizing element to generate a drive waveform for ejecting ink from the nozzles; a conveying belt having a plurality of openings which conveys a recording medium; and a control portion. The control portion controls the driving of the head driver and the conveying belt to perform flushing where ink droplets are ejected from the nozzles in the recording head to pass through one of the plurality of openings with a timing different from that for image recording, using a drive waveform with which the ink droplets ejected from the nozzle each become one droplet before passing through the openings.

There are provided a drive circuit and so on capable of controlling costs. A drive circuit according to an embodiment of the present disclosure is a circuit configured to output a drive signal to be applied to a liquid jet head, including a waveform storage section configured to store a plurality of pieces of waveform configuration information, a waveform selection section which is configured to select one of the plurality of pieces of waveform configuration information stored in the waveform storage section and which is configured to output the waveform configuration information selected as selected waveform configuration information, and a signal generation section configured to generate the drive signal configured to jet liquid based on the selected waveform configuration information output from the waveform selection section and an image datum input from an outside of the liquid jet head. The waveform selection section selects the selected waveform configuration information from the plurality of pieces of waveform configuration information using one of a first configuration signal set in advance, and a second configuration signal defined by an additional data signal included in the image datum.

A liquid ejecting apparatus comprises a liquid ejecting head having a drive element that is driven in accordance with a drive signal to eject liquid droplets from a nozzle. The drive signal comprises a first drive waveform including a first contraction waveform to eject a first liquid droplet and a second drive waveform including a second contraction waveform to eject a second liquid droplet which merges with the first liquid droplet before the first liquid droplet lands onto a medium. The first contraction waveform includes a first segment waveform along which the potential changes, a second segment waveform along which the potential is kept, and a third segment waveform along which the potential changes. The second contraction waveform includes a fourth segment waveform along which the potential changes, a fifth segment waveform along which the potential is kept, and a sixth segment waveform along which the potential changes.

In a control part of a printer, a main area information holding part holds information prescribing a plurality of main areas which are obtained by dividing at least a portion in a facing surface of a head into a plurality of areas in a predetermined direction. A sub-area information holding part holds information prescribing a plurality of sub-areas which are obtained by dividing the main area into a plurality of areas in the predetermined direction. The initial setting part designates the settings relating to corrections in units of the main areas. In a case where correction amounts of darkness based on the initial setting are different between a first main area and a second main area which adjoin each other among the plurality of main areas, the re-setting part maintains or redesignates the settings relating to corrections designated with respect to the first main area in units of the sub-areas.

A liquid discharge apparatus includes a liquid discharger and circuitry. The liquid discharger includes a nozzle to discharge liquid. The circuitry is configured to generate and output a common drive waveform including a plurality of drive pulses for discharging the liquid; select one or more of the plurality of drive pulses from the common drive waveform and apply the one or more of the plurality of drive pulses to a pressure generating element of the liquid discharger; and adjust, with different adjustment values, application waveform shapes of at least two of the plurality of drive pulses applied to the pressure generating element.

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.

Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising non-jetting pulses and jetting pulses, and gating signals comprising a first active gating signal designated for jetting the first print fluid, and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the non-jetting pulses and the jetting pulses to actuators of the first jetting channels based on the first active gating signal to jet the first print fluid, and selectively applies the jetting pulses to actuators of the second jetting channels based on the second active gating signal to jet the second print fluid.

A drive controller includes circuitry. The circuitry generates multiple types of drive pulses to be applied to a driver of a liquid discharge head including a valve to open and close a discharge port, and applies the multiple types of drive pulses to the driver to cause the driver to move the valve to open and close the discharge port. Each of the multiple types of drive pulses causes the valve to move away from the discharge port at a valve-opening speed to open the discharge port, keep opening the discharge port for an open time, and move toward the discharge port at a valve-closing speed to close the discharge port. Further, the circuitry generates the multiple types of drive pulses, the open time and the valve-closing speed of which are different, and changes the valve-closing speed according to the open time.

A system and method for ejecting one or more fluids from a digital dispense device. The method includes selecting a) fixed target areas and total fluid volumes for the target areas of the substrate; b) a predetermined droplet volume for the target areas; c) calculating a required number of droplets for the target areas; d) determining a maximum number of droplets per pixel based on the target areas; e) calculating a number of droplets per pass of an ejection head over the target areas; f) modifying one or more dimension of the target areas to create modified target areas; g) selecting and centering the modified spot size target areas in the target areas; and h) depositing fluids in the modified target areas while scanning the ejection head over the modified target areas.