A liquid ejecting system includes a head unit that includes a nozzle for ejecting a liquid, a pressure chamber communicating with the nozzle, and a drive element for applying pressure fluctuation to a liquid in the pressure chamber by supplying a drive pulse, an acquisition portion that acquires output information regarding a usage condition of the head unit, a first connection portion that is communicably connected to a server through a network, a first output portion that outputs the output information through the first connection portion, a first input portion to which input information regarding a waveform of the drive pulse supplied to the drive element is input through the first connection portion. A decision portion that decides the waveform of the drive pulse supplied to the drive element based on the input information.

A liquid ejecting system includes a head unit that includes a nozzle for ejecting a liquid, a pressure chamber communicating with the nozzle, and a drive element for applying pressure fluctuation to a liquid in the pressure chamber by supplying a drive pulse, a first connection portion that is communicably connected to a server through a network, a decision portion that decides a waveform of the drive pulse supplied to the drive element based on first input information, and a first input portion to which the first input information is input from the server through the first connection portion.

A liquid jet head and so on capable of reducing both of a manufacturing cost and power consumption are provided. The liquid jet head according to an embodiment of the present disclosure is provided with a jet section and at least one drive board. The drive board is provided with a first input terminal and a second input terminal, a plurality of drive devices, a plurality of transmission lines, and a plurality of terminal resistors. The drive devices each have a first input/output section and a second input/output section. The plurality of drive devices include a first drive device and a second drive device. The plurality of transmission lines include a first transmission line, a second transmission line, and at least one third transmission line. The plurality of termination resistors include a first termination resistor, a second termination resistor, and a third termination resistor.

In the print data for a nozzle of a printer, white dots are replaced by pre-ejection pulses. One or more repetitions of the pre-ejection pulses may be inserted into the print data, depending on the actual print speed of the printer, to determine print speed-dependent print data with which the nozzle is activated to print a print image with high print quality.

An element substrate according to an embodiment of the present invention includes a plurality of print elements and a plurality of drive elements for driving the plurality of print elements. The element substrate comprises a generation circuit configured to generate a first drive signal that drives drive elements belonging to a first group among the plurality of drive elements, and a second drive signal that drives drive elements belonging to a second group among the plurality of drive elements, using a selector configured to switch a signal transmitted from outside of the element substrate and an output destination of the signal within one block period in driving the plurality of drive elements by dividing the plurality of elements into the plurality of blocks. The first drive signal and the second drive signal are generated at different timings.

A liquid discharge apparatus includes a channel member defining a nozzle and a pressure chamber in communication with the nozzle; an actuator which applies pressure to liquid in the pressure chamber, and a controller which applies a drive signal to the actuator. The drive signal includes a rectangular main pulse and a rectangular cancel pulse applied after the main pulse within one discharge period. The actuator is driven by the drive signal in a pull-and-push method to discharge the liquid from the nozzle. If f (kHz) refers to a drive frequency of the drive signal, if Tw (μsec) refers to a time length from a falling edge of the main pulse to a rising edge of the cancel pulse, and if Tc (μsec) refers to a pulse width of the cancel pulse, then the following expression holds: 50≤f≤−11.3×(Tw+Tc)+120.

Provided is a jetting driver that can be used for various types of heads with minimal changes. The jetting driver includes: an image board receiving raw image data and generating image data by transforming the raw image data into a form suitable for a type of heads used; and an interface board physically separated from the image board, receiving the image data, and transmitting the image data to the heads through a plurality of channels.

A liquid discharge device including a first drive circuit, a second drive circuit, a third drive circuit, a fourth drive circuit, a connector coupled to a discharge head, and a substrate that includes a first wiring which couples the connector and the first drive circuit outputting a first drive signal, a second wiring which couples the connector and the second drive circuit outputting a second drive signal, a third wiring which couples the connector and the third drive circuit outputting a third drive signal, and a fourth wiring which couples the connector and the fourth drive circuit outputting a fourth drive signal, in which the first wiring is shorter than the second wiring, the third wiring, and the fourth wiring, and the fourth wiring is longer than the first wiring, the second wiring, and the third wiring.

A liquid ejecting apparatus is configured to drive a driving element in accordance with a driving signal applied by control of the controller. A driving signal includes a first ejection pulse for ejecting liquid, a second ejection pulse for ejecting liquid, and a non-ejection pulse for not ejecting liquid. The controller selects the first ejection pulse and the second ejection pulse to supply to the driving element, when a first amount of liquid is to be ejected from the nozzle in the unit period. The controller selects the non-ejection pulse and the second ejection pulse to supply to the driving element, when a second amount of liquid that is smaller than the first amount of liquid is to be ejected from the nozzle in the unit period. The second amount of liquid is larger than an amount of liquid ejected by only the second ejection pulse.

A liquid discharge device includes a first discharge portion, a second discharge portion, a first drive circuit outputs a first drive signal that the first discharge portion discharges a liquid having a first discharge amount, a second drive circuit outputs a second drive signal that the first discharge portion does not discharge a liquid, a third drive circuit outputs a third drive signal that the second discharge portion discharges a liquid having a second discharge amount, and a fourth drive circuit outputs a fourth drive signal that the second discharge portion does not discharge the liquid, in which the third drive circuit is located between the first drive circuit and the second drive circuit along the one direction, and a shortest distance between the fourth drive circuit and the second drive circuit is shorter than a shortest distance between the fourth drive circuit and the third drive circuit.